Getting air duct installation right improves comfort, energy efficiency, and indoor air quality (IAQ). Ventilation is one of the core components of any HVAC system. Your ductwork provides passages for conditioned air to flow to each room and return to the system to be heated or cooled again. It’s often the source of IAQ issues. Therefore, achieving improved indoor air quality in your home starts with proper air duct installation. 

The following tips for installing ductwork can help improve IAQ and make your indoor air healthier to breathe:

Place Ducts Within Conditioned Spaces

Contamination from the attic, basement, or crawlspace can compromise indoor air quality. It’s often caused by duct leakage in these unconditioned areas. Installing ductwork in conditioned spaces instead limits access to pollution, even if there is a leak. It also minimizes heat loss. To achieve these benefits:

• Install air ducts in a dropped ceiling or chase.
• Place under-floor ducts in open-web floor joists (in a multi-story home).
• Put the air handler in an interior utility closet.
• If installing an air handler in the garage, place it in an air-sealed closet.
• Ensure the attic or crawlspace is unvented, air-sealed, or insulated at the perimeter.

Enclose Attic Ducts In Insulation Wherever Possible

If you can’t install ducts within the building envelope, bury them as deep as possible in attic insulation. Using R-8 or higher insulation can prevent heat loss and condensation, especially when it’s hot and humid (or at least R-13 in climate zone 3a, which includes the Greater San Francisco Bay Area). 

This method is just as effective as installing ducts in a conditioned space. The International Residential Code (IRC) was updated in 2018 to reflect the benefits of buried ducts. It also requires ceiling insulation above and below them to be at least R-19.

Choose High-Quality Ductwork Materials

Subpar ductwork materials can affect IAQ, especially improper insulation. Poor insulation inside air ducts can cause temperature imbalances that lead to condensation and mold growth. Mold spores can then be released from the ductwork and spread throughout your home. Dust, pollen, and other external pollutants can also get into ducts that aren’t properly insulated.

The material a duct is made of matters as well. While easy to install and corrosion-resistant, aluminum ducts aren’t very strong. They’re also vulnerable to thermal expansion and prone to damage that can affect indoor air quality. Flexible ducts can also cause issues. They must be installed properly or else tearing, crimping, and sagging can cause airflow and IAQ issues. The more sustainable materials to consider for air duct installation include:

• Galvanized Steel: Sheet metal ducts are non-porous, reducing the risk of mold. They’re also strong, durable, and non-combustible. They are available as rectangular ducts that more easily fit in limited spaces and round ducts that maximize airflow capacity.
• Fiberglass: Fiberglass insulation is often used in sheet metal ducts to prevent condensation. Fiberglass ducts are highly insulative, corrosion-resistant, and block sound from HVAC components and other sources.
• Fiberboard: Fiberboard ducts consist of resin-bonded fiberglass strands. A foil covers the exterior and provides an air and moisture barrier. While the interior isn’t smooth like metal, fiberboard is airtight so long as joints and seams are properly sealed.

Install a Filter at the Return Intake

Return air should be filtered at the last possible point before it reaches the fan. The ideal location is where the return duct connects to an HVAC unit’s intake. A filter here can capture particles from any source, ensuring clean air and protecting mechanical components.

Return grille filters are different. They cover vents that suck air from a room that’s pulled back into your HVAC system. However, they don’t protect against contamination from leaky ducts. Leaks in return ducts beyond the filtration point can pull air and pollutants from the basement, garage, attic, crawlspace, or outside. Properly installed ducts and a well-placed return filter prevent dirt, mold, asbestos, rodent feces, lead dust, and fumes from paints and solvents from getting pulled into the system.

Make Sure All Filters Are Properly Sized

People often think high-efficiency filters block airflow and cause pressure drops in their ductwork. However, a high-quality filter shouldn’t have much of an impact. The Minimum Efficiency Reporting Value (MERV) measures how well a filter captures airborne particles and common pollutants. A MERV 13 filter is considered highly efficient. Despite a thicker filtration media, such a filter works best if it’s well-constructed and fits the filter area (so no air can get around it).

Use Mastic to Prevent Leaks

Mastic can be used during air duct installation to seal all joints and seams. It’s also easier to put on ducts during installation when you have full access to your ductwork. When properly applied, mastic can minimize air leakage over the long term, as it’s resistant to deterioration and doesn’t lose adhesion.

Install an In-Duct Air Purifier

In-duct air purifiers serve as whole-home air filtration systems. They include ultraviolet (UV) air purifiers that neutralize germs and odors in your home. Ionization air purifiers are also available. They electrically charge air molecules, causing dust, smoke, and other particles to bond with them and fall to surfaces where they can be wiped or vacuumed away. 

Installing an air purifier during air duct installation ensures you benefit from clean air right away. It can also prevent dirt from building up in ducts in the first place.

In addition to improving indoor air quality, an in-duct, whole-home purifier can have the following benefits:

• Increased Energy Efficiency: Fewer particles and buildup in your ductwork means air can flow more smoothly, allowing your HVAC system to work more efficiently.
• Fewer Repairs: Dust and debris in ducts can make their way into blowers, compressors, and other components; efficient removal can avoid damage and increase the system’s lifespan.
• Reduced Maintenance: Clean, properly installed ducts help reduce repair costs and the need for professional air duct cleaning, which averages a few hundred dollars.
• Smoke-Free Home: If your house has a chimney, smoke can get through air vents. An in-duct air purifier neutralizes smoke before it pollutes indoor air.
• Cleaner Air: High-quality air duct installation, along with a whole-home purifier, can mean bacteria, viruses, fungi, pollen, animal dander, and other contaminants are removed before they can cause allergy symptoms, respiratory problems, or illnesses.

Contact Trio Heating & Air

Properly installed ductwork can improve indoor air quality. At Trio Heating & Air, we provide air sealing, insulation, and duct cleaning services in the Greater San Francisco Bay Area. Our experienced professionals also replace air duct filters and install whole-house purification systems. They also install air scrubbers in the ductwork. For more information about our HVAC, insulation, and air quality services and to request help, call (415) 234-4728 today.

Ignoring AC maintenance recommendations is a bad idea. Air conditioning specialists suggest having your system inspected, cleaned, adjusted and, if necessary, repaired annually to avoid problems. Your AC unit works hard to provide cool air, especially during the warmer months. It’s best to schedule routine air conditioning service before the heat sets in. If you don’t get AC maintenance before then, it increases the risk of the following issues:

Reduced Efficiency/Higher Energy Bills

Without regular care, reduced AC efficiency is a sure bet. The issues a technician would address can cause a unit to work harder, which uses more energy and raises utility bills. Professionals in the HVAC industry have estimated that efficiency can decrease up to 5% each year you skip AC maintenance. This means the unit will become increasingly more expensive to operate.

More AC Repairs

A lack of maintenance can lead to more frequent breakdowns, emergency calls, and repairs. These cost you money each time, not just to repair/replace worn components But also the cost of labor and other service fees. 

System cleanings, adjustments, and minor fixes help resolve issues rather than let them worsen over time. With a well-maintained unit, you can avoid most of the repairs you’d otherwise need. And, rather than spending money to fix your AC, you can save it for a home improvement or a vacation.

Shorter AC Lifespan

In addition to frequent repairs, skipping maintenance can lead to breakdowns that require replacing the unit much sooner. The more parts that wear out, the more inefficient the unit will become. Eventually, the entire system wears out prematurely. An AC with no maintenance may last 7 or 8 years. If well-maintained, it can last 10 to 15 years or longer, so you spend much less on AC equipment over time.

Decreased Cooling Performance

Long before an unmaintained air conditioner fails, it will continue running but become less effective at cooling your home. You might have to keep setting the thermostat lower to stay comfortable. Eventually, cold air may be hard to come by and the AC starts blowing warm air no matter the setting. Or, the temperature may fluctuate randomly and some rooms may be chilly while others are warm. These issues can occur for various reasons; AC maintenance usually prevents them.

Poor Indoor Air Quality 

Dirty air is another reason HVAC maintenance is necessary. Without routine service, your AC can get dirty quickly. Regular service includes cleaning various components so dust, dirt, and other pollutants don’t get into the air. Once they do, these can circulate throughout your home again and again. 

The contaminants in your airflow can include pollen, dust mites, chemicals from cleaning products, smoke, and volatile organic compounds from carpets, furniture, and other items. A lack of AC maintenance can also prevent the system from removing moisture, so increased humidity contributes to indoor air quality concerns, leading to anything from discomfort to allowing mold and germs to thrive.

Improved air quality is certainly a reason to follow your HVAC contractor’s recommendations. However, it must also be addressed between maintenance visits with the following:

• Replace air filters every 1 to 3 months
• Vacuum dust and pet dander regularly
• Open kitchen and bathroom vents
• Open windows to let a fresh breeze in
• Choose natural cleaning products

Clogged Air Filters

A clogged air filter can restrict airflow and cause your AC to shut down. Changing or cleaning the filter, depending on the type, is one of the easiest AC maintenance tasks you can do. It is also among the most beneficial. 

A dirty filter not only increases strain on components, but the impacts of reduced airflow and performance can cause the coil to freeze, leading to melting water that can damage your AC and home. Other risks include mold, an overheated compressor, and broken coils.

Water Leaks

If the drain line becomes blocked, moisture the system has removed can back up and leak around your air conditioner. Water can damage your AC, furnishings, flooring, and the underlying framing. Fixing water damage is often expensive. It can also lead to extensive mold problems. Flushing the drain line and cleaning the drain pan doesn’t take long and can save you lots of time and money.

Refrigerant Leaks

If a hissing noise or chemical smell accompanies reduced AC performance, a refrigerant leak is likely. The leak will reduce refrigerant levels until the system can’t absorb heat and transfer it out of your home. It may also expose you to a toxic substance that can cause:

• Headaches
• Dizziness
• Nausea
• Breathing issues
• Loss of consciousness 
• Death 

Therefore, AC maintenance can save your life.

Dirty Air Ducts

Once dirt gets into air ducts, it can stick to surfaces, increasing friction and reducing airflow. Or, it can get blown around. Dust can collect on vents and blow into rooms, where it can be inhaled, settle on surfaces, or get sucked back into your HVAC system via return vents. 

Whistling noises are a sign of dirty air ducts. You’ll need a professional duct cleaning to address the problem. Otherwise, serious damage to the system can occur. Regular maintenance helps protect your ductwork and keep it clean.

Voided Warranty

Chances are, your AC manufacturer requires professional maintenance as part of its warranty terms. Skipping even one maintenance visit can void the warranty. You won’t realize the hassle this can cause until you have to pay out of pocket for a major AC repair. The cost of following AC maintenance recommendations is far less than dealing with this situation.

Schedule AC Maintenance with Trio Heating & Air

If you live in Santa Clara County or San Mateo County, you can trust Trio Heating & Air for high-quality annual AC maintenance. Our licensed professionals follow a detailed process to increase efficiency, equipment lifespan, and indoor air quality. Just a small investment each year ensures your comfort all season. From filter replacement to air duct cleaning, we can handle any maintenance task and ensure you get the most out of your cooling system. To schedule air conditioning maintenance, book service online or call (415) 223-5615 today. 

When done correctly, AC installation can significantly lower energy costs. Reduced utility bills are among the best perks of replacing an air conditioner. However, ensuring your AC is energy-efficient requires planning, the correct installation procedures, and following your air conditioning contractor’s usage and maintenance recommendations. Here are 12 ways to ensure your energy costs decrease after AC installation.

• Hire a Qualified HVAC Contractor
• Buy the Right Sized Air Conditioner
• Prepare Your Home for AC Installation
• Check, Upgrade, or Replace Insulation
• Have Your Ductwork Tested and Sealed
• Choose the Best Location for the Condenser Unit
• Install a Smart Thermostat
• Consider a Zoned Air Conditioning System
• Choose an Eco-Friendly AC System
• Take Advantage of Energy-Efficient Settings
• Keep Sunlight Out of Your Home
• Schedule Annual Maintenance

1. Hire a Qualified HVAC Contractor

Finding a licensed, trained, and insured professional is the first step to having an energy-efficient AC. Before hiring a contractor, do your research. Check their credentials and experience in installing the type of system you need. Their reputation also matters, so look through online reviews and ask friends, neighbors, and family members if there’s an installer they’d recommend. Interview at least three contractors and compare each’s qualifications, professionalism, and pricing before selecting one.

2. Buy the Right Sized Air Conditioner

No AC is one size fits all. The size of the unit must match your home’s square footage. Other factors, such as ceiling height, the number of windows, and how many people occupy the space, are also important. An HVAC professional will perform an in-home evaluation and load calculation before finding suitable units. 

An incorrectly sized air conditioner can cause many problems. Too small a unit will run constantly and may not cool your home enough. An oversized AC may cycle on and off too frequently, which leaves little time to reduce humidity. It will also wear itself out and need more repairs. In any case, incorrect sizing will limit an AC unit’s efficiency.

3. Prepare Your Home for AC Installation

Preparing your home and the area where your AC will go makes it easier for the installation team and helps the unit perform at peak efficiency. The following tips can help you get the most out of your investment:

• Clear any furniture, objects, or debris from the installation area.
• Create a clear path from your entryway to the installation area. 
• Seal cracks, gaps, and drafts around windows, doors, and pipes.
• Make sure there’s enough clearance for AC components to be installed.
• Turn off electricity and gas to the area where technicians will work.

4. Check, Upgrade, or Replace Insulation

The insulation within walls and ceilings keeps cool air inside and prevents hot air from getting in. If the insulating materials in your home are old, poor, or deteriorated, energy efficiency won’t be optimal, no matter the quality of AC installation. Your HVAC contractor should check the insulation to determine if it should be replaced, updated, or added to. Common types of home insulation include foam boards, fiberglass batts, and blown-in cellulose.

5. Have Your Ductwork Tested and Sealed

Air conditioning contractors have professional-grade equipment to test ductwork for leaks. A leak from a crack, hole, or loose connection can cause conditioned air to escape. As a result, your new air conditioner will work harder to compensate for the lost air. Duct sealing optimizes efficiency and often doesn’t require demolition, depending on the method used. But if your ductwork needs major repairs and is several decades old, your AC contractor may suggest replacing it.

6. Choose the Best Location for the Condenser Unit

The condenser unit is among the most important parts of your AC system. Where you place it is also crucial. Installing an outdoor unit in direct sunlight can overheat it while placing it in a tight area interferes with ventilation. To maximize the entire system’s efficiency, install the outdoor unit:

• In a shaded area near a north- or south-facing wall. 
• With at least two feet of clearance on all sides.
• At least two feet from a nearby door or window.
• At least four feet away from a heat source.
• Where trees and shrubs won’t block airflow.

7. Install a Smart Thermostat

Integrating a smart thermostat during AC installation maximizes the unit’s efficiency from the start. You can set a cooling schedule and some models learn your habits automatically. Depending on the unit, you can monitor energy consumption and even control your air conditioner remotely. You can do so with your smartphone if you forget to turn it off before leaving. Or, you can lower the temperature so your home is cool when you arrive.

8. Consider a Zoned Air Conditioning System

Zoning lets you control the temperature in different rooms and areas independently. One zone can be set cooler depending on an occupant’s preferences. Aside from improving comfort, zoning increases energy efficiency by not cooling unused or underutilized spaces. A zoned system is also designed to eliminate the risks associated with closing vents in a traditional central AC system.

9. Choose an Eco-Friendly AC System

Eco-friendly cooling systems are usually on the efficient side. They include high-efficiency air conditioners and heat pumps that provide both heating and cooling. A heat pump is best suited for a warmer climate. Solar-powered units are also available. Aside from long-term energy savings, these systems reduce the release of greenhouse gases such as hydrofluorocarbons (HFCs).

10. Take Advantage of Energy-Efficient Settings

You can also lower energy costs after AC installation. For maximum comfort and efficiency, set the thermostat to 72℉ or 73℉. For each degree you increase the temperature, you can save 3% to 5% in energy while decreasing it further can increase energy consumption by as much as 10%. 

Most newer ACs have an “Eco Mode”, which slows down the compressor to save energy. Also, look for air conditioner units with a higher Energy Efficiency Ratio (EER). It is the ratio of cooling capacity to a system’s power output.

11. Keep Sunlight Out of Your Home

Close windows, shades, and blinds during the day to block sunlight. Otherwise, the sun’s rays can heat your home, forcing your air conditioner to work harder to compensate and keep things cool. Without the sun’s energy undoing the job it’s done, your AC can run more efficiently.

12. Schedule Annual Maintenance

Your local HVAC contractor’s maintenance plan includes services needed for your AC to run more efficiently. Routine inspections, cleanings, and adjustments can prevent breakdowns, costly repairs, and early AC replacement. They can also prevent or address issues such as an AC that smells, short cycles, or is making noise.

A technician keeps a unit in top shape by cleaning the coils, tightening electrical connections, measuring refrigerant levels, lubricating moving parts, and calibrating the thermostat, among other tasks. However, you don’t have to wait for a professional to visit your home. Changing the filter as recommended, keeping vents clean, and ensuring no part of the system is obstructed can protect it and lower energy costs. 

Contact Trio Heating & Air

Trusted for high-quality AC installation in San Jose, CA, we provide top-of-the-line equipment. Our fully licensed contractors plan the installation process and advise you on the ideal model, ensuring your air conditioner lowers energy costs. They remove your existing AC unit and install the best quality components. The system is then tested to ensure there are no installation or performance issues. To get started and benefit from five-star service, lasting comfort, and energy savings, call (415) 223-1647 today.

It’s logical to consider ways to cut HVAC repair costs. According to Forbes, the average HVAC repair bill is $410 (in 2024 dollars). A service call, on average, costs $215. While a basic repair can set you back a few hundred dollars, a major air conditioning repair can exceed $2,500 or, in the case of replacing a compressor, rival the cost of installing a new system. 

Air conditioners are complex, hard-working appliances, so they will eventually need to be fixed. However, you can save money on repairs with the following tips:

1. Keep Your HVAC System Clean

Cleaning your HVAC system regularly reduces the cost and frequency of repairs. Dirt and debris can restrict airflow and contaminate the system, which can cause damage and accelerate wear. Therefore, you should perform these tasks on a routine basis:

• Replace or Clean the Air Filter: A dirty filter can seriously harm your HVAC system. Depending on the type, clean or replace it every two or three months. Install a new filter once a month if you use your AC or heater more frequently or your home is excessively dusty.
• Keep the Vents Clear: Dirt buildup can block vents and release debris into the air. Dusty or dirty vent covers should be removed and cleaned. You can clean them with a vacuum hose, a damp cloth, or by washing them in soap and water. Call an HVAC repair contractor to evaluate the system if this doesn't improve airflow.
• Clean the Outdoor Unit: Remove leaves, twigs, or debris that fall on the unit and clear debris or objects around it, leaving at least two feet of clearance. Also, trim plants and shrubs away. Anything that can block airflow can contribute to damage and more costly repairs. However, leave any tasks that require disassembling components and cleaning internal parts to a professional.

2. Wash the Condenser Coils

If the outdoor condenser coils are easily accessible, you can clean them yourself. These coils release heat the refrigerant has absorbed from inside your home. This process becomes inefficient if they become dirty, which can happen with exposure to the elements. Turn off the electricity to the system before rinsing the coils using a garden hose at low pressure. You can also look for cleaning products labeled safe for cleaning condenser coils.

3. Manage Your Thermostat Settings Wisely

The ideal temperature setting is 78℉, as the U.S. Department of Energy suggests, although many people prefer it a few degrees cooler in summer. Not setting the thermostat too low or too high reduces the demand on your HVAC system. Therefore, less strain can result in fewer costly repairs in the future. 

If you have a programmable thermostat, adjust it to accommodate your schedule. Setting it closer to the outdoor temperature when you’re away avoids overworking the system. You can also set it to adjust the temperature to a comfortable level before you return. A programmable unit can lessen the number of adjustments needed, saving energy and reducing strain.

Where a thermostat is installed can affect your HVAC system. It should be on an interior wall near your main living space, where it can most effectively monitor the temperature. A thermostat should not be in direct sunlight or near a vent or heat source. Otherwise, inaccurate readings can cause it to run your HVAC system more often, leading to more repairs.

4. Reduce Your AC’s Cooling Load

The less hard the system has to work, the more likely you can cut HVAC repair costs. Aside from how you install and set the thermostat, here are ways to ease the burden on your air conditioner:

• Close blinds to prevent heat from getting through windows.
• Set ceiling fans to rotate counterclockwise and direct cool air downward.
• Close the doors to rooms you don’t use.
• Turn your AC or heater off if you don’t need it.
• Run heat-producing appliances during cooler hours.
• Use kitchen/bathroom exhaust fans to reduce heat and humidity.

5. Don’t Procrastinate

Calling for help before the system breaks down can reduce HVAC repair costs significantly. Being proactive can save you a lot of money. Ignoring a small problem or waiving it off as no big deal can lead to more damage. Most issues start small, so call a skilled professional if the system:

• Isn’t heating or cooling your home as effectively
• Makes shrieking, buzzing, or hissing noises
• Cycles on and off too frequently
• Runs for longer than usual
• Releases musty or burning odors
• Leaks water or refrigerant

6. Consider a Duct Cleaning

Air ducts don’t require annual maintenance, but should be cleaned once every three to five years. Even a thin layer of dust and debris can restrict airflow. Dust mites, bugs, and bacteria may be present while mold can cause serious damage to your HVAC system. It can also circulate spores and toxins throughout your home.

A trained HVAC technician knows how to inspect and safely clean your duct system. They can use negative pressure, HEPA vacuums, and brushes to clear our main and branch ducts, plenums, and other components. These methods prevent or eliminate reduced airflow and high pressure that can damage your AC, heater, and air ducts.

7. Seal Any Air Leaks

Air leakage from ductwork and elsewhere in your home can let cooled or heated air escape and unconditioned air in. Therefore, your HVAC system works harder to maintain a comfortable temperature. Your local HVAC contractor can look for cracks, holes, and loose connections in ductwork and use the latest methods to seal them. Gaps around doors and windows can also cause air leakage but are easily sealed with caulking or weatherstripping.

8. Avoid DIY Repairs

Other than simple tasks like changing filters, cleaning coils you can access, or sealing small air leaks, leave HVAC repairs to a professional. Attempting a DIY repair can have costly consequences. It can also be dangerous and cause an injury. 

Using the wrong tool, misdiagnosing the issue, or making one mistake can result in damage that requires more expensive repairs. You may also void the manufacturer’s warranty by tampering with the system. Therefore, you would have to pay the full cost of any repair or replacement due to any error.

9. Get Multiple Quotes

When you need an HVAC repair, contacting multiple companies for a quote can help cut repair costs. Search online or ask relatives or neighbors about companies they’ve worked with and narrow your choices down to three or four providers. Read online reviews and ratings to verify they’re qualified for the job and are reliable. Then, each contractor should evaluate the issue separately and compare prices by considering the services including materials used, and the type of support, warranty, etc., the company provides. 

10. Consider Replacing Your HVAC System

Deciding whether to repair or replace your AC unit can help achieve long-term savings. If your air conditioner is 15 to 20 years old, frequent repairs and reduced efficiency may cost you more than replacing it. Having a new system installed avoids major repairs and can lower your energy bills, not to mention improve comfort and indoor air quality.

11. Schedule Annual AC Maintenance

If you don’t keep up with annual maintenance (one tune-up for your AC in the spring and one for your furnace in the fall), higher HVAC repair costs are almost certain. A maintenance technician is trained to spot and correct any issues early. Addressing minor problems, cleaning your AC system, and making adjustments can eliminate the strain that causes larger components to fail. 

During a maintenance call, a contractor should lubricate moving parts to reduce friction. They should also measure and recharge refrigerant levels to avoid performance issues and check electrical components for shorts, wear, and corrosion that can lead to more serious damage.

Contact Trio Heating & Air

When you need an HVAC repair, we are dedicated to exceeding your expectations and ensuring any issue is fully resolved. Our professionally trained technicians are committed to keeping homes in the San Jose area cool and comfortable. They diagnose and repair the problem quickly and tailor each service to your requirements. You’ll receive the best solution at the most reasonable price. To schedule prompt air conditioning services in your home, book an appointment online or call (415) 223-5096.

Air duct cleaning should be done on a routine basis. The National Air Duct Cleaners Association (NADCA) recommends it every three to five years. While air ducts don’t need the annual maintenance ACs and furnaces do, contamination can affect your entire cooling and heating system. The dust and dirt you see at home may not be limited to visible surfaces. A professional air duct cleaning can eliminate contaminants to protect your health and HVAC system.

How Does Air Duct Cleaning Work?

You can remove and clean grills and covers and brush or vacuum inside vents close to them, but you can’t reach every part of your duct system. Your ductwork runs throughout your home, and much of it is in remote areas. A licensed HVAC professional can use various methods and equipment, including high-power vacuums, to perform duct cleaning. 

They may also treat duct surfaces to eliminate and prevent mold and bacterial growth. If your HVAC contractor doesn’t specify the product they’re using, ask what it is. The treatment should be a non-toxic, eco-friendly compound for a specific purpose. A type of sealant can also be sprayed into the duct system to coat and encapsulate surfaces, so fibers and other materials don’t escape and circulate in the air.

However, the primary steps an air duct cleaning service provider follows include:

• Access Ductwork: The contractor opens panels and access ports to inspect and clean the entire system.
• Check Ducts from the Outside: Air ducts are inspected on the outside for holes, rust, and other damage.
• Evaluate the Interior of Ductwork: A borescope is used to inspect long ducts; a camera transmits images to a screen.
• Vacuum Air Ducts: Depending on the duct system and how dirty it is, the technician can use a vacuum system that exhausts materials outside your home or high-efficiency particulate air (HEPA) vacuum equipment.
• Brush Duct Surfaces Clean: Specialized brushes help dislodge and remove stubborn dust, particles, and other materials. If a duct is made of fiberglass or a metal duct is lined with fiberglass, soft-bristled brushes are used.

Throughout the process, carpeting, furniture, and household items are covered and protected. The contractor also seals and re-insulates any access holes they have made, so your newly cleaned ducts are airtight. In addition to air duct cleaning, they should also clean the return and supply air plenum, drain pan, coils, fans, registers, grills, and diffusers.

When Should I Have My Air Ducts Cleaned?

Some specialists say to have air ducts professionally cleaned every year or two. The NADCA says you can go up to five years between cleanings. Meanwhile, the U.S. Environmental Protection Agency (EPA) stresses there are many sources of indoor air pollution. Cleaning, cooking, and movement around your home can release dust and particulates. Duct cleaning hasn’t been proven to eliminate dust and pollution and the health problems they can be associated with.

The EPA recommends air duct cleaning on an as-needed basis (we’ll soon discuss the signs you should consider scheduling service). It also urges the maintenance of fuel-burning appliances to limit indoor pollution and hazards such as carbon monoxide poisoning. Therefore, duct cleaning alone doesn’t improve HVAC efficiency, especially if heating equipment isn’t maintained and AC coils and fans aren’t cleaned.

Primary Benefits of Cleaning Your Ductwork

Although it’s not the only way to maintain your HVAC system, air duct cleaning can have substantial benefits, including:

• Indoor Air Quality Improvements: You spend most of your time indoors, where there are many sources of pollution. Cooking, smoking, and even cleaning (many household cleaning products have potentially harmful chemicals) contribute to indoor air quality issues. Pollutants from inside and outside can make their way into ductwork and circulate, the effects of which are most noticeable to people with allergies, asthma, and other respiratory issues.
• Prevent HVAC Repairs and Early Replacement: Dirty air ducts and HVAC components can force the system to work harder, accelerating wear and tear. Therefore, it may require frequent repairs and its lifespan may be reduced, costing you more than if you schedule routine maintenance and duct cleanings. 
• Save Money on Your Energy Bills: A lack of maintenance reduces energy efficiency. Dusty, dirty air ducts can cause your air conditioning system to run longer. Before this leads to a major repair, utility bills increase steadily, so you pay more for electricity each month, even if your utility company hasn’t increased rates. 

How Do I Know I Need an Air Duct Cleaning Service?

No official guidelines exist for determining when to have your ductwork cleaned. The best time to schedule service is in the spring or early fall. While the three- to five-year principle is fine in most cases, you should consider getting your air ducts cleaned more often if:

• Your home was recently renovated
• There’s nearby construction
• You live in a high-traffic area

However, there are a few signs you should schedule a professional air duct cleaning as soon as possible. These include:

• Excessive Dust: If air vents are covered in dust or debris, chances are the ducts are, too. Particles that don’t stick to duct walls when the system is on can blow throughout your home and recirculate in your HVAC system and rooms.
• Mold Growth: Like dust, mold near vents or ducts can easily spread deep into the system. Mold thrives in dark, damp areas. Inefficient ducts are an ideal location where it can grow unchecked, while mold can release spores and toxins that spread throughout your home.
• Infested Ducts: If you see, hear, or smell rodents or insects in your ductwork, call a professional. Pests will continue to proliferate if they remain undisturbed. Rodents are especially known for their ability to cause damage and may leave behind waste that spreads disease-causing germs.
• Allergies Are Worse At Home: Seasonal allergies are common. But if your allergies are worse when you’re indoors than when you go outside, the reason may be in your air ducts. Call a professional to evaluate your ductwork and perform a thorough air duct cleaning if necessary. It can help alleviate your allergy symptoms.
• You Have Pets: Pet hair and dander tend to go all over the place, including air ducts. More frequent duct cleaning can reduce the amount of pet dander. It can also reduce associated allergy symptoms and contribute to improved indoor air quality.
• You Don’t Know When the Ducts Were Last Cleaned: If you can’t remember when you last had an air duct cleaning, chances are it’s been several years. Call a professional if this is the case or you’re moving into a new home, especially if the previous owners aren’t sure if or when the ductwork was cleaned.

Can I Prevent Contamination In Between Duct Cleanings?

Preventative maintenance doesn’t eliminate the need for duct cleaning, but it can minimize contamination. The following tips can prevent your ductwork from becoming contaminated:

• Change your air filter every one to three months
• Use the highest-efficiency filter your AC manufacturer recommends
• Replace an air filter whenever it becomes clogged
• Seal any gaps around the filter holder
• Dust and vacuum your home regularly
• Make sure a maintenance technician cleans the coils and drain pan
• Seal off supply and return registers during a construction or renovation project
• Do not operate your HVAC system until contractors clean up all the dust

It’s also important to keep moisture out of ducts. It can cause mold and HVAC performance issues. To prevent moisture problems, promptly repair leaks or water damage, ensure the condensate drain pan and drain line are clear, and properly seal and insulate ducts.

Are Certain Duct Materials More Prone to Contamination?

Air ducts can become contaminated whether they contain bare sheet metal or insulation materials such as fiberglass. However, bare metal is easier to treat with an EPA-registered biocide if there’s microbial growth. It’s important to keep ducts clean and dry. Insulating materials are common because they can help improve temperature control, conserve energy, and reduce condensation. They also provide noise control and meet various building materials and fire protection standards.

Is Duct Cleaning a Good Way to Protect My Family’s Health?

Some materials that contaminate ducts can pose health risks. This doesn’t mean a light amount of dust in your duct system is going to get everyone sick. It’s not known what the threshold is for how much contamination is bad. Periodic duct cleaning can help, but you should also stay on schedule with yearly HVAC maintenance tasks such as system inspections and cleaning coils, drain pans, and filters.

How Much Does Air Duct Cleaning Cost?

Based on 2024 data by Angi, the average air duct cleaning cost is $380. However, the service can range from $150 to $795 depending on the size of your home, type of ducts, number of vents, accessibility, how contaminated the system is, and labor. Mold remediation, pest removal, duct sealing, and other services cost extra.

Schedule an Air Duct Cleaning with Trio Heating & Air

We provide a range of indoor air quality services in San Jose and the San Francisco Bay Area. Our licensed professionals provide thorough inspections and can employ various techniques to ensure your air ducts are clean. They also install different types and brands of whole-house air purifiers. To learn more or consult with our team about whether it’s time for an air duct cleaning in your home, call (415) 234-4728 today.

Avoiding a large and costly air conditioning repair is easier than you might think. Good habits and some simple tasks can reduce wear on expensive parts. They can also avoid breaking out in a sweat indoors during the warmest days of the year. Aside from maintaining your comfort, the following steps can prevent costly AC breakdowns, emergency calls, and early system replacement:

• Hire a Qualified Professional for AC Installation
• Change the AC Filter as Recommended
• Lessen the Demand on Your Air Conditioner
• Open All Vents and Keep Them Clear
• Keep an Eye on the Thermostat
• Make Sure the Outdoor Unit Is Clean
• Check for a Clogged Condensate Drain
• Call for Help If the Evaporator Coil Freezes
• Don’t Ignore Signs of a Refrigerant Leak
• Schedule an Annual AC Tune-Up

1. Hire a Qualified Professional for AC Installation

Avoiding future repairs starts before you turn your AC on for the first time. A licensed contractor matches the right air conditioner with your home, considering factors such as unit type, efficiency rating, and size. An AC’s size refers to its capacity. If the unit is too large for a space, it will cycle on and off too frequently, while too small a unit will run too long. Either way, you’ll see poor cooling performance, higher energy bills, and possibly increased repair costs.

Hiring a professional also ensures the system is properly installed and connected. The refrigerant, drain, and electrical connections must be secure for it to run smoothly, efficiently, and safely. The upfront cost is worth it considering what you may pay in air conditioning repairs otherwise, especially since most warranties won’t cover a system unless a licensed contractor installs it.

2. Change the AC Filter as Recommended

Most HVAC professionals recommend changing the air filter at least every three months. However, depending on the filter, how dusty your home is, and if you have pets, it may need to be changed as often as every 30 days. Following these guidelines can avoid major repairs. The filter protects your AC system from dirt and debris that can damage sensitive components. 

A clogged filter also blocks airflow. Your AC system will then work harder and less efficiently, which can make your home uncomfortable and lead to expensive repairs. Changing the filter takes just a few minutes. Therefore, save time and money by following the manufacturer’s recommendations. This can extend the life of your air conditioner significantly.

3. Lessen the Demand on Your Air Conditioner

The more you use your AC, the greater the rate of wear and tear. However, you can reduce the demand on the system in a few simple ways. You can possibly avoid a major air conditioning repair by taking these steps:

• Turn up the thermostat a couple of degrees, but still at a comfortable temperature.
• Install a programmable thermostat so you can schedule when your AC turns on and off.
• Use a ceiling fan to make it feel a few degrees cooler.
• Turn the air conditioner off when you’re not at home.
• Close blinds and curtains to keep out heat from sunlight.

4. Open All Vents and Keep Them Clear

If you’re not using a room, closing an AC vent won’t reduce energy consumption. Keep all the vents open to avoid efficiency and air pressure issues that can strain the system. Also, move furniture, storage units, blinds, drapes, or other items that block any vents. Just by keeping all the vents open and clear, you can avoid the surprise expense of a major air conditioning repair.

5. Keep an Eye on the Thermostat

Although it’s relatively small, the thermostat is among the most important parts of your HVAC system. It is the control center for your AC, heating unit, and system fans. Therefore, a thermostat problem can cause the system to run when not necessary, not turn on when you need it, or turn on and off too frequently. 

Any changes in system performance can point to a malfunctioning thermostat. Check the unit’s accuracy; the temperature reading should match the set temperature when the system is running. Mechanical problems and wiring damage can affect temperature/humidity control and increase the risk of shocks, fires, and other hazards. Call for help as soon as you notice any changes in how your thermostat is working.

6. Make Sure the Outdoor Unit Is Clean

The outdoor condenser unit contains vital components that maintain airflow and release heat. If it becomes dirty, your entire AC system can malfunction. To prevent issues that can lead to a major air conditioner repair:

• Clear leaves, branches, and twigs from the top of the unit.
• Maintain at least two feet of clearance on all sides.
• Keep the unit shaded so direct sunlight doesn’t overheat and strain it.

Also, check the outdoor unit’s coils and fins for dirt and debris. Cleaning the unit can prevent various problems. To do so, turn off the power, remove the fan assembly, and use a soft brush or vacuum to clean the coils and fins. Follow the manufacturer’s instructions for cleaning your specific type of unit; or, to be on the safe side, call a professional. 

7. Check for a Clogged Condensate Drain

The condensate drain line removes water that condenses from moisture your AC system collects from the air. If the line becomes clogged, indoor humidity levels can increase, while the problem can also lead to water damage and mold (resulting in serious damage to your HVAC system and home). Check the condensate drain often for blockages. There are home remedies for unclogging it, but hiring a professional can save money and avoid a major air conditioning repair.

8. Call for Help If the Evaporator Coil Freezes

A frozen evaporator coil can do a lot of damage and is often a sign of other problems. Turn off your AC right away. Leaving it off or running the fan for a while may thaw out the coil. However, the best option is to call a repair technician to defrost it and determine what caused the problem. The reasons can range from a clogged filter to a refrigerant leak. Ignoring the issue may lead to damage that requires replacing the coil or the most expensive AC repair—compressor replacement.

9. Don’t Ignore Signs of a Refrigerant Leak

A refrigerant leak can cause your AC system to overheat and break down. Over time, wear and tear and corrosion can affect the coils. The refrigerant is contained in a closed system and doesn’t get used up. Therefore, if you have to recharge the system, there’s most likely a leak somewhere. Call a professional for the following signs of a refrigerant leak:

• Reduced cooling performance
• The AC isn’t dehumidifying the air
• Cooling cycles are running longer
• The evaporator coils are icy
• Hissing or bubbling sounds from the outdoor unit
• Inefficiencies are driving up your energy bills

10. Schedule an Annual AC Tune-Up

As much as you want to avoid calling a local AC contractor, doing so annually can prevent costly air conditioning repairs. A technician has the tools and expertise to properly clean sensitive components, measure refrigerant levels, and lubricate moving parts. They can also check for damage to electrical parts and look for duct leaks. Taking corrective measures for smaller issues can avoid larger repairs and save much money over the life of the system.

Schedule AC Maintenance or Repair with Trio Heating & Air

We are a reliable and experienced air conditioning company serving the The Greater San Francisco Bay Area area. Our licensed technicians are committed to high-quality results and customer satisfaction. They are equipped to address any problem and respond quickly to get your system running again. With regular maintenance, emergencies and costly major repairs can be avoided, which is why we recommend annual AC tune-ups. To schedule air conditioning repairs, routine maintenance, or other AC services, book an appointment online or call (415) 223-5615. .