Most HVAC pros suggest replacing air filters every 3 months; it’s the most basic form of AC maintenance. Can you afford to wait longer than 90 days? This depends on a few factors, such as the type of filter, system usage, and your household. There are many reasons to consider changing your filters more frequently. We’ll examine reasons not to wait as long and how to know a filter has gone bad.

When to Change an HVAC Filter

Air filters don’t last forever. You don’t want to wait too many months past your filter’s life expectancy, or else repair issues and high energy bills can become problematic. Whether you replace your filter every month or 90 days depends on the following:

• Type of Filter: The type of filter is the most important factor in how often you change it. Fiberglass air filters generally don’t last more than 30 days. While more expensive, a pleated air filter can last as long as 90 days, depending on how much you use your HVAC system. Check with the air filter manufacturer for product replacement recommendations. 
• Size of Your Home: The larger your home, the more air circulates through your HVAC system, which means an air filter can get dirtier faster. In a smaller home, less air circulates, so the filter may last longer. However, smaller air filters may get dirtier just as fast as larger ones; depending on the filter, the replacement schedule may be the same.
• How Often You Use Your HVAC System: Running your heating or cooling system constantly will increase your AC maintenance needs. You may need a new filter every few weeks. But if you run the system sporadically or just part of the day, one filter can last for months. Some can last anywhere from a whole season to a full year.
• Number of People: Households with more people tend to generate more dust and dirt, which can shorten a filter’s lifespan. This is especially true if you have young children at home. In these environments, even thicker pleated filters should be replaced more often. If you have a small family, live alone, or are in your home part-time, fewer filter changes are necessary. 
• Pets: Pets that shed hair, release dander, and track in dirt and pollen can contribute to indoor air pollution, which ends up in air filters. You’ll need to change the filter at least every two months. Do so during the transition from winter to spring and summer to fall when cats and dogs shed the most.
• Allergies: If you have allergies, install a new air filter before the old one becomes clogged. It can help reduce bouts of coughing, sneezing, or runny nose. If you or anyone in your household has asthma or other respiratory conditions, consider changing the filter every 20 to 45 days to protect sensitive lungs.
• Outdoor Air Quality: Poor outdoor air quality can affect an HVAC filter. Smoke, dust, and debris can get into your home and clog it, which is common in big cities. Wildfire smoke can also shorten the time needed between filter replacements. Check the filter more often on smoky days or when outdoor air quality is poor.
• Season: How frequently you use your HVAC system depends on the season. Spring and fall tend to be milder, so the system is used less. The air filter won’t clog as fast unless you keep doors and windows open or run the fan constantly. However, filters trap more dirt and contaminants during the heating and cooling seasons (AC maintenance between times of peak demand ensures you have a clean filter for the season).

How to Know a Filter Needs Changing

Visually inspecting the filter is the only way to know if it’s good or needs to be replaced. We recommend checking it monthly (more often if you get a new pet or the outdoor air quality is poor). This way, you can replace a clogged filter in time and figure out how quickly it gets dirty. When inspecting a filter, hold it in front of a light source. The light should pass through; if not, replace the filter with a clean one.

Remember, there’s no strict guideline for how much dirt is acceptable. A filter with a thin layer of dirt may be fine if you can still see its material. If its surface is completely obscured by debris, replace the filter. A musty odor also means you need a new filter.

Other than seeing a dirty filter, other signs it may need changing include:

• Dust and debris on vents
• Dust on fan blades, cabinets, and other surfaces
• Your AC/heater sounds strained when starting
• The HVAC system runs for longer periods
• An indicator light reveals it’s time to change the filter

What If I Don’t Change the Filter?

The longer you wait, the more dust, dirt, and allergens will collect on the filter. Your HVAC system will work less effectively, reducing comfort, energy efficiency, and indoor air quality. A buildup of mold, fungal, and bacterial particles can damage the system or cause health issues in your household. 

Also, a thick coating of dirt can impede airflow, which increases wear and tear on your heating or cooling system. Dust can jam fan motors, valves, and other moving parts. The excess strain can lead to frequent repairs.  Over time, strained components can fail, causing others to break down, until you’re dealing with a major issue like compressor failure.

Does My HVAC System Need to Be Repaired? 

Over time, if you don’t change the filter as recommended or schedule routine AC maintenance, your HVAC system can be damaged. Replacing the filter won’t fix the problem at this point. Call an experienced contractor if you notice signs such as:

• Reduced Temperature Control: If your AC is blowing warm air or the furnace is not heating your home, there may be a problem with a thermostat, compressor, or other component. 
• Restricted Airflow: This can be caused by a clogged filter or ductwork blockage, but other mechanical issues can affect airflow too. 
• Loud Noises: If your HVAC system is louder than usual, it may have a mechanical issue caused by strain resulting from a dirty filter or a lack of maintenance.
• Frequent Cycling: Waiting too long to replace the filter can lead to AC problems that cause it to turn on and off too frequently. This means the system is working harder than it should.
• Higher Energy Bills: A dirty filter can cause your AC or heater to run less efficiently, causing your energy bills to spike. High bills can also mean your HVAC system needs to be repaired.

Contact TRIO Heating, Air & Plumbing

We are a leading air conditioning service company in the The Greater San Francisco Bay Area area. Whether you need a new filter, a tune-up, or an AC repair, our licensed and trained technicians are committed to customer satisfaction and a job well done. Our team is prompt and ready to ensure your home stays comfortable. They can fix any issue with your HVAC system and provide annual AC maintenance to prevent breakdowns and improve efficiency. To request routine service or repairs, call (415) 223-1647 today.

Everyone benefits from cleaner air, but it can come at a price. The cost of a whole house purification system can range from $400 to $4,000 (in 2024 dollars), according to HomeGuide. However, the exact amount you spend on installation depends on the following:

• Type of System/Filter
• Brand of Equipment
• Efficiency Rating
• Size of Your Home
• Labor and Other Installation Costs

In this guide, we’ll look at all these factors. It can help you budget for a whole house purification system that meets your household’s indoor air quality needs.

Air Purification System Cost Variables

The cost of central air purifiers varies considerably. The national average is $1,300, but you can spend just a few hundred dollars on a low-end system.¹ Meanwhile, a high-end system can cost several thousand dollars. Why is there such a difference? To answer this question and help you understand how whole house purification systems are priced, here are the factors to consider:

Type of System

A purification system is generally defined by the type of filter it includes. The cheapest type is a single-function system, while multi-stage systems that remove the smallest particles are the costliest. Here are the average costs of the most common whole-house air purification systems:

• Flat Filter ($10 to $70): A flat filter traps more particles than a standard HVAC filter and removes dust, pet dander, and mold spores. However, it’s the least effective whole-house filter type and must be replaced every 1 to 3 months.¹
• Electronic Filter ($300 to $1,000): An electronic filter attracts and traps airborne particles via an electrical field. An electrostatic precipitator uses an electrostatically charged metal plate. More effective at capturing smaller particulates, the filter plate must be cleaned every 3 to 6 months.¹
• Extended Media Filter ($100 to $300): This features a thick pleated material that captures particles. The filter box is installed in your existing ductwork. However, adding one requires installing a media filter cabinet, which may require retrofitting your HVAC system.¹
• High-Efficiency Particulate Air (HEPA) Filter ($600 to $3,000): A HEPA filter pushes air through a thick mesh to trap dust, pollen, and smoke. It can also capture bacteria and many viruses. Able to trap 99.97% of airborne particulates, some high-density HEPA filters can restrict airflow, so consult with a professional before installing one.¹
• Ultraviolet (UV) Light Filter ($200 to $400): A UV filter emits ultraviolet light to neutralize germs and mold circulating in the air. Maintaining the system is affordable; replacing the UV bulbs costs less than $70 annually. However, a UV filter does not remove dust, allergens, or smoke (hybrid systems include mechanical filtration for this, but the equipment can cost up to $1,800).¹ 
• Portable Filters ($500 to $1,800): If you don’t have a ducted HVAC system, you can install a portable home air filtration system. It does not require professional installation, but annual filter media replacement costs $40 to $100.¹

Brand

Many companies make whole-house air purifiers. Prices vary significantly from one brand to another. For example, brands such as Field Controls, Honeywell, and Reme Halo tend to cost less than higher-end names like Carrier, Trane, and Lennox. 

Each brand may offer various options at different price points. Shopping around can help you find an affordable solution. Look for products with Energy Star certification. Efficiency is important as the system must run constantly to achieve and maintain good indoor air quality. 

Also, try to find equipment covered by a long-term warranty. This requires installation by a licensed contractor but can result in savings on service over the system’s life.

Efficiency

Higher-efficiency filtration systems cost more. However, you must weigh the benefits of having one, such as relief from allergies and respiratory issues. If your pets shed a lot, a high-efficiency whole house purification system can remove excess hair and dander.

Whole-house HVAC filters are rated using a Minimum Efficiency Reporting Value (MERV). The most common ratings for air filters include:

• MERV 1-4: The most basic type of filter that captures pollen, dust mites, and carpet fibers. It captures less than 20% of particles 3 to 10 microns in size.¹
• MERV 5-8: Suited for most homes, this filter blocks most common pollutants and 50% to 85% of particles 3 to 10 microns in size.¹
• MERV 9-12: Able to remove 85% to 90% of 3- to 10-micron size particles and up to 89% of 1- to 3-micron size particles, it can capture pet dander, mold spores, and fine dust.¹
• MERV 13-16: It can capture over 90% of 1- to 10-micron particles and 75% to 95% of 0.3- to 1-micron particles, meaning it can filter smoke, fumes, bacteria, and viruses.¹

Home Size

The larger a home, the more powerful an air purification system it will need. A large house may also require multiple filtration units, as can one with multiple levels or an open floor plan. An installer must consider your home’s size, layout, and other features before determining the ideal type of system. The larger and more complex it is, the more it’ll cost to purchase and install.

Labor and Other Costs

Labor charges can add significantly to the cost of a whole-house purification system. With labor included, a whole-house HEPA system can cost $4,000. An extended media air filter or UV filtration system can cost up to $800 (installing a hybrid UV/mechanical filtration system can cost up to $3,000). Combining equipment and installation costs, an electronic filter can cost as much as $2,000.¹

However, the total cost of installing a whole house purification system is determined by more than the price of equipment and labor. These are some other variables to consider:

• Accessibility: If your HVAC equipment is in an attic, crawlspace, or other hard-to-access location, installing a whole house purification system will cost more.
• HVAC Inspection: An inspection can identify any AC, heater, or ductwork problems before the filter system is installed, but costs $150 to $500.¹
• Ductwork Replacement: Installing an air purification system may require ductwork replacement (which can cost up to $500 per duct run) or duct cleaning, which averages $300 to $700.¹
• Outlet Installation: Installing a new electrical outlet to power the air purification system can cost $150 to $350.¹

Contact Us to Learn More About Whole House Purification Systems

At TRIO Heating, Air & Plumbing , we install innovative, high-quality air purification systems in The Greater San Francisco Bay Area area homes. We offer seamless installation and also provide filter replacements and air duct cleaning. Our experienced team is committed to improving your home’s indoor air quality. To learn more about whole house purification systems and inquire about costs and special offers, book an appointment with us or call (415) 223-5615.

You can delay or avoid thermostat repair with proper maintenance. A well-maintained thermostat generally lasts about 10 years. Although one of the least expensive HVAC components to replace, it’s crucial for reaching and sustaining optimal temperatures in your home.

A thermostat is wired directly to your heating and cooling system. It allows for the temperature to be adjusted and the system to be turned on and off manually or automatically. Therefore, thermostat maintenance should be part of your routine. These are some thermostat maintenance tips to keep it in top shape.

1. Check and Replace Thermostat Batteries Regularly

One of the simplest fixes for home thermostat problems is simply checking the batteries. A low battery reduces the amount of power available to your thermostat. This can make it inaccurate and less able to manage your comfort. To avoid these issues, replace the thermostat batteries every six months or as the manufacturer recommends.

Even if your thermostat is hardwired, it may have backup batteries. Change these to prevent disruptions in heating and cooling due to a wiring issue.

2. Keep the Thermostat Clean and Dust-Free

One of the best thermostat upkeep practices to get into the habit of is keeping the unit as clean as possible. A buildup of dirt and dust can prevent your thermostat from working properly. Cleaning it every few months can help you avoid HVAC performance issues due to controller malfunctions, and it gives you a chance to look inside and check for other signs you need thermostat repair. Here’s how to clean a thermostat:

• Step one: Snap off or unscrew the cover, depending on the model.
• Step two: Using a soft brush, dust off internal components.
• Step three: Use compressed air to clear debris from tight spaces.
• Step four: Look for loose or corroded wires and call an electrician to fix any issues.
• Step five: Clean the cover and place it back on the unit.

3. Test Your Thermostat Settings Monthly

Thermostat testing and calibration ensure that the system is accurately reading temperature, allowing it more control over your home’s HVAC systems. If the temperature keeps fluctuating, your energy bills are increasing, or causing HVAC thermostat issues like short cycling, your thermostat may need calibration.

To calibrate a thermostat, first test it by comparing its reading with a dependable thermometer. If the readings differ by more than 3ºF after 20 minutes, check the product manual for how to calibrate the unit. Calibration techniques differ based on the type and model of a thermostat.

4. Install the Thermostat in the Right Location

When people ask how to maintain a thermostat, one aspect that’s often overlooked is the placement. Constant exposure to high heat can damage a thermostat, so the unit should not be near a heat source, such as direct sunlight, a vent, or an appliance. To protect its integrity and accuracy, it should be mounted on an interior wall in or near a frequently used room. Excess heat can cause inaccurate readings, affect the cycling and efficiency of your HVAC system, and increase the likelihood you’ll need thermostat repair.

5. Seal and Insulate Around the Thermostat

Drafts and other temperature irregularities can throw off your thermostat settings. That’s why sealing and insulating the area around the thermostat is essential during installation. This ensures it gets an accurate reading of the temperature in the room instead of drafts inside your walls or elsewhere.

6. Update Thermostat Software (for Smart Models)

Smart thermostat maintenance has some unique considerations compared to standard models. You can often save yourself hours of digital thermostat troubleshooting simply by resetting and updating the software on your unit. Often, this resolves error codes and any other issues you’re facing.

7. Schedule Seasonal HVAC Tune-Ups

Don’t wait to see signs of thermostat failure to get help! By prioritizing proactive maintenance at least once a year, you’ll get ahead of potential problems while tuning up your HVAC systems at the same time, ensuring they’re ready to run smoothly all year.

8. Improve Indoor Air Quality to Support Thermostat Accuracy

Your indoor air quality has a surprising effect on your thermostat’s accuracy. Part of programmable thermostat care is ensuring the air in your home is clean enough to give an accurate temperature reading. Excess dust, debris, and humidity in your indoor air can prevent the sensors in your thermostat from working properly, which means an IAQ solution can help your HVAC systems run more reliably.

9. Upgrade to a Smart or Programmable Thermostat

Smart thermostats don’t just offer convenience — they save you as much as 10% a year on energy costs and even extend the lifespan of HVAC systems. These advanced systems offer far better reliability than traditional models, making them well worth the investment.

10. Know When to Call a Professional for Thermostat Help

If the above maintenance tips aren’t solving your thermostat troubles, it’s time to call an expert. Here at Trio, thermostat services are a daily job for us, and our team has the experience to troubleshoot even the toughest issues. Whether you have a smart thermostat or a conventional one, leave it to us to get it working as it should again.

Final Tip: Bundle Thermostat Service With Air Quality Upgrades

When you work with Trio Heating, Air and Plumbing, bundling thermostat maintenance with indoor air quality upgrades is an easy, affordable way to boost your home’s comfort across the board. Since thermostat service is usually a very quick job, it just makes sense to combine this with other services, such as duct cleaning, air sealing, air scrubber installation, or even putting in a whole-house air purifier.

Call to Action: Get Expert Thermostat Help From TRIO

We provide high-quality thermostat installation, repair, and maintenance in the greater San Francisco Bay Area, CA. Our licensed HVAC technicians can help no matter what type of thermostat repair you need. They can service manual, digital, programmable, and smart models. As part of our Protection Plan, thermostat maintenance is performed during your annual AC and heating system tune-up.

To learn more or book thermostat services for your home, contact us online or call (415) 223-5096.

At TRIO Heating, Air & Plumbing , we’re proudly upgrading our service vehicles to a Tesla fleet. This signifies the principle behind our new slogan: “TRIO: Where Sustainability Meets Service Excellence”. Aside from planting a tree for every job we do (which means a great deal for the region), we’re committed to environmental sustainability and high-quality service in every aspect of our work, down to the vehicles our employees drive.

Until now, we have relied on gas-powered vans. Investing in Teslas is allowing us to convert to an eco-friendly all-electric fleet. Safety is another reason for our initiative. The autopilot feature in Tesla cars adds a new level of protection. It’s one of many features that help reduce accidents; therefore, our sales team and service technicians are safer on the job. 

Tesla vehicles are reliable and convenient so our employees can be happy at work, which we know contributes to higher quality service. We also know how much Tesla means in the Bay Area. Here’s a look at the benefits of a Tesla and how it can improve a fleet.

Benefits of Teslas

Driving a Tesla doesn’t only improve safety. It has many other perks that benefit casual drivers and businesses. These benefits include:

• Impressive Battery Range: Although battery range depends on the Tesla model, driving range is rarely a problem, especially for city driving or commuting. Some Teslas are capable of traveling 320+ miles on a single charge. That means they’re suited for long-distance driving or traveling from site to site during the workday. And, with the battery placed on the bottom of the vehicle, a lower center of gravity prevents the car from rolling over.
• Save Money on Gas: With high gasoline prices, your budget can be strained by fuel costs alone. On average, a full battery charge costs less than half the price of filling up the tank. Teslas are fully electric so you never have to buy any gasoline. Charging stations can be installed in virtually any home or business, so you start your day with a full charge.
• A Large Network of Charging Stations: Tesla’s supercharger network consists of over 30,000 stations, where a 15-minute charge can yield a 200-mile range. A full battery charge can sometimes be achieved in an hour and a half or less. The company’s charging stations are known for being dependable and accessible. Therefore, charging an EV battery in the field can be achieved quickly and easily, with minimal disruption to workflow.
• More Eco-Friendly: Tesla vehicles don’t use traditional fuel. Therefore, they help reduce greenhouse gas emissions and the burning of fossil fuels. This contributes to a smaller carbon footprint. Our crews can drive around all day and not produce the environmental pollution that traditional cars and trucks do. Tesla has indeed helped TRIO’s efforts to be more sustainable.
• Over-the-Air Updates: With Tesla, you need not worry about outdated features and technology. The cars are built to last. Meanwhile, software updates enable Tesla owners/operators to take advantage of new features and services as they become available. They have allowed users to interact with vehicle cameras and speakers via their cell phones. Some updates have even improved vehicle functionality by, for example, adding engine horsepower or modifying battery or wheel performance.
• Few Maintenance Requirements: Teslas require hardly any maintenance, which further reduces costs and downtime. They don’t need oil changes, spark plug replacements, or new fuel filters. The regenerative braking system used in Tesla vehicles rarely requires new brake pads. Air and cabin filters need replacement every 2 to 3 years while the AC desiccant bag lasts roughly 6 years.
• Security Features: Numerous security features are included in Teslas. Eight cameras help improve safety and also help keep your vehicle more secure. Sentry Mode helps protect your car from intruders by detecting signs of trouble and flashing the headlights to ward off unwanted guests. It also displays a message on the infotainment screen to remind outsiders they’re being recorded. 

The system sends smartphone notifications as well. An app lets you view live feeds and speak through a vehicle’s exterior speaker. Or, you can view recorded footage once you return to your car. Additionally, Teslas let you shut off certain features and lock the trunk or glove box remotely, which limits access to them by, for example, valet personnel.

Why Upgrade a Service Fleet with Teslas

Upgrading an entire fleet may seem like a big investment, but these vehicles have 5-star NHTSA safety ratings in every category. The low risk of injury means our workers are always protected. Their day is also easier. Remote diagnostics and mobile service benefit drivers by saving them time and allowing them to focus on their job duties. 

Tesla accommodates all types of drivers. The company’s fleet and business program is designed to help turn your fleet all-electric and reduce your organization’s environmental impact. You can also take advantage of tax incentives to further reduce operational costs, on top of savings on gas and maintenance expenses.

However, Tesla doesn’t only benefit your bottom line. Driving one also benefits the community. With the low probability of accidents and injuries, using features such as Autopilot contributes to safer roads. Therefore, we’re helping keep people throughout The Greater San Francisco Bay Area and the Bay Area safe.

Here’s yet another perk. California permits Tesla owners to use HOV lanes without occupancy restrictions. This allows our sales and service teams to get to work sites more efficiently.

How TRIO Plans to Introduce Its Tesla Fleet

Switching to an all-electric fleet of vehicles is a big undertaking. Since we want to ensure our customers see uninterrupted service, we’re slowly converting from our gas-powered vans to a full fleet of electric vehicles. Taking a phased approach allows us to ensure the process goes more smoothly and our fleet is 100% reliable when it’s complete. Therefore we can continue prioritizing our customers’ needs and the lasting performance of their AC, heating, and indoor air quality systems.

TRIO: Where Sustainability Meets Service Excellence

Whether you need help with air conditioning or heating installation, repair, or maintenance, TRIO has you covered. Our sustainability initiatives, including upgrading our gas-powered vans to all-electric Teslas, will allow even faster customer service response times. We can also continue to guarantee the highest quality work and provide the best products and brands on the market. 

A professionally trained team ensures your home is comfortable, safe, and energy efficient. Aside from AC and heating equipment, they install and service thermostats, insulate attics and crawlspaces, and provide duct cleaning and sealing. To learn more about these and our air scrubbers and whole-house purification systems, or request service, book an appointment online or call (415) 223-1647.

At some point, most homeowners face the decision to repair or replace their air conditioning system. A repair is often more cost-effective up-front. However, AC replacement can have many benefits. Your air conditioning contractor can help you decide and weigh the benefits of each option. We’ll look at a few perks of replacing your AC unit and when a repair is the best choice for now.

Reasons You Should Consider AC Replacement

There are many benefits to replacing your air conditioner. While you may have become attached to your AC over the past few years, a replacement may be the right decision. These are some reasons to go this route:

• Repair Costs Are Adding Up: Even if your AC needs a minor repair, it can cost hundreds of dollars. You may pay thousands of dollars for a major repair. But even if you’re not facing repair bills that high, consider how frequently your AC requires service. To determine if a repair is worth it, multiply the estimated repair cost by the unit’s age; if it exceeds the cost of a new model, go with AC replacement. Or, if a repair costs over 50% of installation, replace the system.
• Your AC Is Aging: Most home ACs last 10 to 15 years, but depending on the system, they can last longer. However, a unit older than 10 years that requires extensive repairs should usually be replaced. Older air conditioners are less efficient to begin with, and they’re more likely to break down and require additional repairs. You’re just wasting money by fixing a 20-year-old air conditioner time and again.
• Energy Efficiency Is Decreasing: An AC works less efficiently as it ages. Also, older models weren’t designed to be as energy-efficient as modern ones. Higher energy bills are one disadvantage of keeping your aging AC going. You may also be dealing with temperature control issues. A new air conditioner provides more consistent temperatures while saving on energy each month.
• Indoor Air Quality Is On the Decline: A malfunctioning air conditioner is less effective at maintaining good indoor air quality. Excessive dust, particulates, and other pollutants can lead to respiratory and other health issues. Replacing an old AC is one of the best ways to improve indoor air quality. Newer units have more effective filters and are designed to newer standards that require homes to have cleaner air.
• Old ACs Can Be Hazardous: An aging air conditioner can be a safety risk. Worn components and faulty wiring can increase the risk of a fire. Some systems still use R-22 Freon, which depletes the ozone layer and is an environmental hazard. If your AC has a coolant leak, it’s an immediate risk to your health and safety, as refrigerant is toxic.

Can I Get By with an AC Repair?

You may not yet need AC replacement if there are issues such as:

• Warm air blowing due to a faulty or incorrectly set thermostat, dirty filter, or restricted airflow caused by clogged ducts.
• A refrigerant leak if a line can be sealed and your AC system uses the latest acceptable refrigerant.
• The air conditioner runs constantly due to a clogged filter, dirty coil, low refrigerant, or a malfunctioning thermostat.
• Loud, unusual noises are caused by a loose, dirty, or damaged part; in this case, the affected part can be cleaned or replaced.
• Restricted airflow from vents, which can be resolved by cleaning or sealing air ducts or fixing the motor or blower.

How Do I Decide on AC Repair or AC Replacement?

To make a decision, you need to determine the cause of the issue. Many AC issues, even if the system is older, are caused by simple problems. The more complex the issue or the more components it involves, the more likely your HVAC contractor will recommend AC replacement. Therefore, a technician must evaluate the extent of the damage. A repair makes sense if it entails replacing a small, inexpensive part; if the system is over 15 years old and requires a large, costly part, it should be replaced.

Contact TRIO Heating, Air & Plumbing

Our fully trained technicians can provide any type of AC repair and help you decide when it’s time for AC replacement. We install top-quality makes and models and ensure they provide reliable comfort and operate efficiently. During air conditioning installation, we find the right model and size of unit for your home, remove your old system, install the new one, and test it to ensure it performs as intended. For more information, book an appointment online or call (415) 223-5096.

Several air conditioner maintenance tasks, whether DIY or completed by a reputable air conditioning company, help keep your home cool, improve energy efficiency, and avoid major repairs. That’s why we recommend scheduling AC maintenance at least once a year. If you want your air conditioning system to cool reliably and last longer, remember these important AC maintenance tips.

How Often Should You Perform AC Maintenance?

Homeowners should complete basic AC maintenance tasks every 1 to 3 months and schedule a professional tune-up annually. Scheduling AC maintenance in the spring prepares the system for peak demand during the summer. By completing maintenance before peak season, technicians can identify problems early, optimize performance, and minimize the risk of AC breakdowns during the hottest months.

1. Check the Filter and Replace It As Needed (Most Important)

A clean air filter keeps airflow strong and protects the entire system. Checking and replacing the filter is a simple DIY task that takes only a little time. A clogged filter restricts airflow, forcing your AC to work harder and increasing energy consumption. It can also trap dust and allergens, sending them back into your home and affecting indoor air quality.

To replace AC air filters, turn off the HVAC system, open the service panel, slide the filter out, and replace it with a compatible filter. Replace disposable air filters every 1 to 3 months depending on usage, allergies, pets, and your home environment.

2. Clean the Indoor Unit Surface & Vents

Dust and debris naturally collect on the indoor unit and vents, reducing airflow and contributing to odors or poor indoor air quality. Excessive dust can also accumulate on the evaporator coil and blower motor, accelerating wear and reducing AC performance.

To clean the indoor unit, wipe it down with a clean cloth or feather duster. You can also spray a cloth with a cleaning or antibacterial solution and wipe down the casing. Clean supply and return grilles by vacuuming the openings and wiping down the surfaces. For a more thorough cleaning of internal components, hire a qualified HVAC technician.

3. Check Your Thermostat + Optimize Settings

One way to know your AC is working properly is to verify that the thermostat setting and air temperature match. Programmable and smart thermostats should show the current temperature and automatically turn the system on and off to maintain the set temperature.

Verify the thermostat’s sensor accuracy by comparing it against another thermometer. If the numbers differ, check if the thermostat is properly set to cool. Exposure to sunlight, radiators, drafts, and other factors can also prevent accurate sensing. If inconsistencies continue, a technician may need to evaluate wiring, sensor placement, or airflow.

4. Inspect and Clear the Condensate Drain Line

Your air conditioner collects condensation during cooling cycles, and a built-in tray and drain line direct this moisture outdoors. Mold, algae, and other grime can block the drain and cause water to back up and overflow, leading to possible odors and water damage.

Clean the drain using a wet/dry vacuum. For severe blockages, contact an AC maintenance professional.

5. Keep the Outdoor Condenser Clean and Clear

The outdoor AC condenser unit is exposed to dirt, leaves, twigs, and other debris that can collect around it, causing mechanical strain, blocking airflow, and increasing the risk of overheating. Maintain at least 2 feet of clearance around the unit and use these DIY strategies:

• Remove nearby storage boxes or garden equipment
• Wipe the casing with a damp cloth
• Remove debris with a vacuum and brush attachment
• Use a garden hose to gently spray the casing and fins

6. Make Sure Your AC System Is Properly Insulated

The insulation surrounding your AC’s copper refrigerant line helps maintain thermal efficiency. If you find broken, crumbling, or missing insulation and exposed pipe sections, call a licensed contractor. Do not replace this insulation yourself.

7. Schedule a Duct Cleaning

Though not required as frequently as other maintenance, duct cleaning every 3 to 5 years helps extend your AC’s lifespan. Clean ducts enable proper airflow, reduce contaminants, and improve efficiency. This service requires specialized tools and professional technicians.

8. Schedule Annual Maintenance

Annual AC maintenance is the most effective way to extend system life, increase energy efficiency, and prevent breakdowns. A licensed technician provides comprehensive service, including:

• Thorough cleaning
• Lubrication of moving parts
• Electrical inspections
• Filter replacement
• Refrigerant level checks
• Thermostat checks
• Blower motor inspection
• Ductwork evaluation
• Evaporator coil cleaning
• Condensate drain line clearing

What Homeowners Can Safely Check Themselves

Homeowners can safely perform tasks like replacing filters or adjusting the thermostat. These tasks don’t involve internal components or electrical systems. Leave anything involving refrigerant, wiring, motors, or coils to professionals. Here's a helpful checklist.

Common AC Problems Prevented by Routine Maintenance

Regular HVAC maintenance helps stop problems before they begin. Benefits include prevention of:

• Frozen evaporator coils
• Water damage from blocked drains
• Weak airflow due to dust buildup
• Overheating or short cycling
• Premature compressor failure
• High energy bills

Signs Your AC Needs Maintenance ASAP

If your system shows signs of trouble, professional attention is needed. Contact TRIO for AC maintenance if you notice:

• Warm air or inconsistent temperatures
• Strange noises
• Leaks near the indoor unit
• Frozen evaporator coils
• Frequent cycling
• Spiking energy bills
• Musty odors or allergy symptoms

Call TRIO Heating, Air & Plumbing for AC Maintenance

Reliable AC maintenance supports comfort, efficiency, and system longevity. TRIO Heating, Air & Plumbing offers tailored services for Bay Area homeowners. To schedule a tune-up or learn more about our protection plans, contact us today.