Air scrubbers improve indoor air quality in many ways. They remove tiny particles and other pollutants you can’t see but can impact your health and HVAC system. An air scrubber is far more efficient than a standard media filter in your air handler unit. We’ll look at what it is, how it works, and the benefits this advanced air filtration system can provide. 

The information below can help you decide if it’s time to contact one of Trio’s air scrubber installers, who can find the best air-cleaning solution for your home.

How Does an Air Scrubber Work?

An air scrubber is a sophisticated device installed in your HVAC ductwork. It purifies the air circulating in your home by a series of filter elements. Depending on the model, it may include more than high-efficiency particulate filters. Some units incorporate ultraviolet (UV) light and catalytic processes that neutralize organic and other pollutants.

The standard parts of an air scrubber include:

• Pre-Filter: It removes larger particles. Although not visible to the naked eye, these can irritate and clog parts of your HVAC system. The pre-filter protects other filters from clogging and can increase their lifespan. It also helps maintain the airflow rate.
• Primary Filter: Particles smaller than one micrometer are removed by this HEPA filter at the second stage of the system. It increases the air scrubber’s efficiency.
• Carbon Filter: Although not a standard air scrubber component, a carbon filter can be added to remove toxic chemicals and materials. It improves an air scrubber’s ability to remove odor-causing gases and vapors.
• UV Light: Ultraviolet light breaks down the DNA of organic contaminants, rendering them inert and unable to reproduce and causing infections and illnesses.
• Blower Mechanism: This mechanism enables the air scrubber to pull air into the filtration system. Often referred to as the fan, it may have variable speed capabilities to accommodate the air stream’s rate and pressure.

Exactly how an air scrubber improves indoor air quality depends on the type. The most common forms of this technology include:

• Dry Air Scrubbers: Many dry air scrubbers feature a filter stack that integrates a high-efficiency particulate air (HEPA) filter, which can remove bacteria and many viruses.
• Wet Air Scrubbers: Most often installed in manufacturing facilities, these use a mist that adheres to dust and other particles. The most advanced systems include mist eliminators, fans, pumps, and collection vessels.
• Integrated Air Scrubbers: While some basic air scrubbers are portable, an integrated system is built into your HVAC system. It comes in many sizes, including units sized appropriately for your home.
• Electrostatic Precipitator: It uses an electric charge to bind and capture material, which ranges from dust to particulates from gases. Depending on the type, particles may attach to a grounded plate, collecting surface, or collection container.
• Negative Air Scrubber: By creating negative air pressure, it captures and collects contaminants and prevents them from leaving a specific area, especially during a renovation. Negative air scrubbers also contain multi-stage HEPA filtration.

Ways In Which an Air Scrubber Improves Indoor Air Quality

An air scrubber can improve the air quality in your home on many levels. It operates continuously as air is circulated and recirculated. These are a few ways it can achieve cleaner, healthier indoor air:

Remove Circulating Debris

An air scrubber effectively removes dust, pollen, mold spores, and volatile organic compounds (VOCs). Therefore, it removes particulates that contribute to allergy symptoms and asthma attacks. It also removes chemicals released by everyday household cleaners, some furniture, carpets, draperies, and composite wood products. If your home is dusty no matter how often you clean it and people in your household often experience sneezing, coughing, and congestion, contact an air scrubber installer to find the best solution. 

Eliminate Airborne Germs

An air scrubber, especially one with a HEPA filter and UV light, can trap bacteria and even eliminate pathogens such as flu viruses and COVID-19. Its ability to prevent airborne germs from spreading makes an air scrubber one of the best solutions for improving indoor air quality and sanitizing your home. The system doesn’t only remove particles from the air. It also removes particulate matter from surfaces such as countertops and door knobs where contact with germs is most common. To do so, it emits oxidizers or ions into the air that disperse and neutralize these pathogens.

Eliminate Odors

Odors can be caused by circulating dust particles, smoke, paint fumes, and chemicals from various sources around your home. They can linger for hours after cooking. The pets you love can also contribute to household odors. While some odors are inconvenient, others can be emitted by hazardous substances. Air scrubbers remove all kinds of odors. Therefore, your home not only smells better but its overall indoor air quality is improved.

Improve HVAC Performance/Efficiency

Airborne particles and debris can contaminate your HVAC system. The effects can range from air filters that clog more quickly to damaged blowers, coils, and other components. Such damage can lead to expensive repairs and early system replacements. A decline in heating or cooling system performance can also lead to indoor air quality issues, including uneven temperatures, increased humidity, and dust and debris from dirty ductwork. An air scrubber can improve HVAC efficiency and extend the system’s operating life.

FAQs

How Does an Air Scrubber Differ from an Air Purifier?

An air purifier only removes airborne contaminants. In addition to removing airborne particles, an air scrubber can clean surfaces. It also doesn’t release ozone as some ionizing air purifiers can. Ozone can be harmful to human health and does not remove dust and other particles that cause allergies.

Do I Need an Air Scrubber?

An air scrubber can provide fresher air, contribute to better sleep, and improve your overall quality of life. It is worth considering if:

• You or someone in your family have frequent allergy symptoms, especially while at home.
• People in your household get sick often or have underlying issues that make them more vulnerable.
• Dust, pet dander, mold, and other compounds are common in your home.
• Your home has persistent odors from cooking, pets, smoking, and other sources.
• You’re concerned about potentially harmful contaminants in bathroom, kitchen, and other surfaces.

Should I Hire an Air Scrubber Installer?

An HVAC professional can help find the best model for your HVAC system and home. They can also perform an indoor air quality assessment, which is beneficial because there are many types of air scrubbers and laws regulating legal thresholds for certain pollutants. Also, the installation process may require some modifications to your ductwork, which can require a permit not to mention complex work that should be left to a professional.

Contact Trio to Help Improve Indoor Air Quality

Customers throughout Santa Clara and San Mateo Counties rely on Trio Heating & Air for expert air purification services. We install high-quality whole-house air purifiers and air scrubbers. Our technicians are fully trained to install the latest systems and ensure lasting results. They also provide other air quality services such as duct cleaning, duct sealing, and air duct filter replacement. To learn more about our air quality services or request a consultation with one of our professional air scrubber installers, book an appointment online or call (415) 223-5615.

Installing an air filter in your HVAC ductwork is the best way to achieve clean, breathable air for your entire home. A tight building envelope insulates a modern home well, improving temperature control. However, it contributes to more concentrated indoor pollution. The good news is various options can compensate for this; we’ll explore a few if you’re looking for an air filter replacement or upgrade.

Residential HVAC filters are available as media filters, which provide a physical barrier to trap particles. Meanwhile, electronic filters capture various particles and contaminants via a high-voltage electric charge. Some filtration solutions combine both methods to improve their effectiveness. 

What Is a Whole-House Filter?

A whole-house filter differs from the air filter installed in your furnace or air handler unit. It is typically placed in a return-air duct. From here, it traps particles before they enter the return airflow of a forced-air heating or central AC system. Unlike traditional AC filters, a whole-house air filter must be installed professionally. 

Best Types of Ductwork Filters

A built-in filtration system can serve as a whole-house purifier. As long as your HVAC fan is on, it constantly filters the air that passes through. The effectiveness and longevity of a filter depends on the type. These are the most common air filters for HVAC ductwork in homes:

Flat Filters

Matted fiberglass filters are often found in forced-air furnaces. They’re designed to capture large dust particles before they enter ductwork and other crucial components. However, the smallest microscopic particulates can pass through. These are major culprits of respiratory irritation, so depending on your home and whether you have allergies, asthma, or other issues, these filters aren’t always the most effective.

Fiberglass filters are good at keeping large particles out of sensitive HVAC components. However, they typically don’t have a Minimum Efficiency Reporting Value (MERV) of over 4. This means their overall particle filtration ability is relatively low.

Extended Media Filters

An extended media filter is a stacked set of filtration materials. The filtration media is set in an 8-inch-thick accordion-like pile. While pleated filters with cotton or polyester folds are a step up from fiberglass filters and have MERV ratings of 5 to 8, extended media filters can have a greater range of filtration power. 

But these filters aren’t for a DIYer. They require a professional to install in line with your ductwork within a specialized filter holder. The initial installation can cost $400 to $600, according to This Old House. However, the filter needs replacement only once a year, which generally costs $60 or less.

Electrostatic Filters

An electrostatic precipitator is a hi-tech option that also integrates into ductwork. It creates static electricity, which most people prefer to avoid. Instead of making your hair frizzy and causing annoying shocks, the high-voltage current helps trap particles, which take on an electric charge so a collector plate can attract them like a magnet.

Electrostatic precipitators effectively catch extremely small particles, like smoke particles and most allergens. Another advantage is they never have to be replaced, although the aluminum collector plates must be cleaned every few months. The plates can be cleaned off by rinsing them in soap and water. 

An electrostatic filter often includes a flat or pleated carbon filter to improve efficiency. 

Electronic Filters

Instead of static electricity, electronic filters produce a high-voltage charge generated by a transformer. An electronic filter is a mechanical air filter that plugs into an outlet. It won’t work if your HVAC system has a return grille filter. Nonetheless, MERV ratings of 8 to 16 mean they’re highly effective at filtering small particles. The higher upfront price tag is offset by the need for duct filter replacement only about once a year.

Electronic filters are generally safe and effective. However, when shopping around, look for third-party testing data on any product you consider. The filter should use an ionizer process similar to a whole-home air purification system and not generate ozone, which can be a health hazard.

HEPA Filters

High-efficiency particulate air (HEPA) filters come in many forms. Some fit inside air handlers, while others are designed for ductwork. They remove 99.97% of airborne contaminants. These include tiny dust, pollen, and smoke particles as well as pet dander, mold spores, and bacteria. Whether you suffer from allergies, asthma, or other respiratory issues, a HEPA filter can eliminate the tiny particles that trigger your symptoms.

Ultraviolet (UV) Filters

A built-in UV filter uses ultraviolet light to kill microorganisms, including bacteria and viruses. Short-wave UV light effectively neutralizes organic contaminants in the airflow. However, a UV filter does not remove dust and other particulate-based pollutants. Therefore, UV and HEPA filters are often combined into the same unit. Research your options before choosing one, as some filtration systems produce ozone from oxygen molecules.

Gas-Phase Filters

Less commonly used in homes, gas-phase filters use gas sorption to attract gas molecules to a solid surface. They effectively remove odors and volatile organic compounds (VOCs). An activated carbon and charcoal media is used but a short lifespan means the filter must be replaced frequently. Also, it only removes gaseous pollutants and is ineffective against other particulates; therefore, gas-phase filters are typically used as an add-on filtration option.

FAQs

Why Do MERV Ratings Matter?

Every air filter has a MERV rating, which ranges from 1 to 16 and measures a filter’s ability to capture particles. The higher a filter’s rating, the more effectively it traps particles and the more expensive it is. 

Higher-rated filters can also reduce airflow and reduce an HVAC system’s efficiency. Therefore, filters with MERV ratings of 8 to 13 are recommended for homes. Your HVAC contractor can help find the best option for your system.

Where Are Air Duct Filters Located?

A standard HVAC filter fits in a slot above, below, or on the side of the air handling unit. Ductwork filters are placed in a return air grille in a wall or ceiling, just inside the vent. Or, they can be installed somewhere between the return duct and the air handler.

How Many Filters Does My Ductwork Need?

A small HVAC system may require just one filter. If you have a two-story home, it probably has two air filters (one for the upstairs HVAC system and one for the downstairs system). An additional filter may be needed for an indoor air quality solution like a whole-home mechanical ventilation system. An add-on ductwork filter provides additional filtration, so your heating and cooling system may have multiple filters.

How Do I Pick the Best HVAC Filter?

A pleated filter at least 3 inches thick with a high MERV rating is often considered an ideal solution. However, various factors help determine the best HVAC filter for your home. Some of these considerations include:

• Airflow: Higher-efficiency filters come with the downside of increased airflow resistance. An HVAC contractor can help find the best filter based on your system’s specifications.
• System Usage: A ductwork or whole-home air filter works only when the system is running. If you don’t need heating or cooling, you can turn on the fan setting and the filter will clean the air that circulates.
• Maintenance: If you’re looking for the lowest-cost filter, expect to change or wash it every few months. Maintenance is essential for good indoor air quality. By investing a little more, you can benefit from a media filter with fewer maintenance requirements.

Lastly, the filter’s size and design must fit your HVAC system. If not sized correctly, a filter can let air escape around its sides. This counteracts its benefits and allows contaminants in.

Contact Trio Heating & Air

We provide indoor air quality services, including whole-house air purifier installation, for homeowners in the The Greater San Francisco Bay Area area. From thorough inspections to high-quality workmanship, we have you covered. Our ductwork filters and air purification systems capture dust, dust mites, pet dander, VOCs, germs, smoke, mold spores, and odors. Check online for special offers to help you save. For a consultation and a ductwork filter replacement or upgrade by trained professionals, call (415) 223-1647 today.

A few attic and crawl space insulation options are available. Poor insulation can reduce your comfort and cause you to spend more on heating and cooling. But the best type depends on your home. We’ll look at the most common types of attic insulation and insulating materials best suited for crawl spaces so you can make an informed decision.

Common Home Insulation Materials

Insulation prevents drafts and the transfer of heat and moisture. Since heat naturally rises, the attic is one of the most important areas to insulate. Each type of insulation has pros and cons and is not suited for every situation. These are the top choices, although the best depends on your needs, budget, and local climate.

Spray Foam Insulation

Spray foam is the only liquid-based insulation. It has many benefits, including ease of application. The material is sprayed into place, where it thickens and grows, filling any gaps or spaces where heat can escape. It forms a durable, airtight seal.

An insulation’s R-value measures its ability to resist the movement of heat (the higher the number, the better a material’s thermal performance). Spray foam has an R-value of 5.6 to 8, which makes it an effective insulator. Other benefits of using it include:

• Spray foam maintains its quality over time
• The foam provides some structural support
• No vapor barrier, so the foam won’t trap moisture
• A Class-1 Fire Rating
• Resistance to mold and mildew growth
• Doesn’t provide a food source for pests

The higher cost of spray foam insulation is offset by its energy efficiency. Precautions are recommended during installation; a mask, respirator, and goggles should be worn. The materials in the foam can irritate your skin. We suggest letting a professional install spray foam insulation, as they understand the complexities involved.

Foam Board Insulation

Rigid foam boards are great for insulating basements and are preferred for crawl space insulation. They are suited for insulating foundation walls. Sealing the joints between the boards prevents air passage, while rigid foam:

• Is non-water absorbent
• Doesn’t support mold growth 
• Provides a high level of energy efficiency

Available in standard sizes, foam boards are easy to cut to fit. This usually requires a circular saw and masonry blade, but sometimes a utility knife can be used to score the material; then you can snap it apart. It’s also easily attached with screws or a special adhesive. Smaller pieces can be sealed with caulk or spray foam.

The types of foam board insulation include:

• Expanded polystyrene (EPS): EPS is the cheapest form and the same material as disposable coffee cups. However, it only has an R-value of 4 per inch of thickness.
• Extruded Polystyrene: A denser material available in pink or blue panels, it has an R-value of 5 per inch of thickness. Panels with tongue-and-groove edges limit air movement.
• Polyiso (Polyisocyanurate): This more costly material provides an R-value of 6 per inch of thickness. Various thicknesses are available, and the material is often foil-faced to reflect heat.

Fiberglass Batt Insulation

The most common type of attic insulation, fiberglass batts have a recognizable pink cotton candy or cloud appearance. They consist of tiny glass fibers produced via heat from recycled material and sand. The fibers are rolled into large sheets fused by a chemical vapor.

The benefits of fiberglass batt insulation, and why it’s such a popular option, include:

• Production from a renewable energy source (sand).
• A flame-proof vapor barrier can slow the spread of fires.
• Air pockets prevent the material from shrinking or collapsing.
• It is soundproof, reducing internal and external noises.
• DIY installation is possible.

While many people don’t need a professional to install fiberglass batt insulation, it doesn’t come without risks. The glass in the material can cause injury, while the vapor from the barrier can be harmful (wearing gloves and a mask protects you from harm). 

Other downsides to this insulation include reduced performance if it gets wet. Fiberglass batts take a long time to dry and can breed mold after absorbing moisture. The insulation is also attractive to rodents and other pests.

Blown-In Fiberglass Insulation

Blown-in fiberglass insulation is also available. The base material is the same as with batts (without the vapor). It is installed using a blowing machine. In addition, blown-in fiberglass insulation provides an airtight layer, filling cracks or gaps to limit the movement of hot or cold air. It also has sound-insulating properties.

Other perks include:

• Faster Installation: The blown-in method is quicker than installing fiberglass batts. Rather than days, it takes just hours. 
• Improved Air Quality: The absence of a vapor improves indoor air quality, which is beneficial for people with allergies.
• Proper Care Maintains Efficiency: With routine maintenance, you can prevent the R-value from decreasing due to settling.

Blown-In Cellulose Insulation

This attic insulation is also applied using a blowing machine. It consists of recycled wood, cardboard, newspapers, and other materials, which are made flameproof with boric acid and other substances. Blowing the material in fills spaces and gaps in attic walls. 

Blown-in cellulose is eco-friendly; no new material needs to be produced and it can be reused. It also has a 23% higher R-value than fiberglass batts. Wind-washing is reduced as well. This phenomenon is when insulation is pushed away from the edges, which reduces thermal performance.

These advantages help offset cons such as messy installation. The cellulose should also be kept dry. Any dampness can allow mold to grow. Such a situation takes much time and effort to resolve, as the insulation must be cleaned up bit by bit.

How Do I Choose the Right Insulation?

The best insulation to choose depends on where you’re installing it. Foam boards are best for crawl spaces. Also, think about how you’re using the space. Consider properties such as the type of material, its thickness, insulating value, sound absorption, energy efficiency, and ability to control moisture. However, if you intend to turn your attic into a living space, you may want to insulate the roof instead. 

How Do I Find the Best R-value for Insulation?

The level of heat resistance you need depends on your home’s location and climate. The U.S. Environmental Protection Agency (EPA) has established eight climate zones across the country. The recommendations for insulation efficiency in an attic, floor, etc. vary depending on the zone you live in. Generally, the farther north you live, the colder your location, and the higher in altitude you are, the higher the R-value you’ll need.

How Do I Know My Home Needs More Insulation?

Signs your home is under-insulated include a sudden increase in energy bills, meaning your HVAC system is working harder. Cold spots, especially near windows and doors, can mean air is leaking through cracks or seams. Hearing lots of noise from outside can mean your walls and ceilings need to be better insulated.

Contact Trio Heating & Air

When it comes to attic and crawl space insulation, there are a few ways to consider your options. Choosing the right insulation requires knowledge of available materials and your home. We can install various types of insulation to regulate indoor temperatures. Our team can also help you take advantage of moisture control, sound dampening, and energy savings as well as insulation rebates, coupons, and tax credits. Call (415) 223-5096 to learn more and request help with crawl space and attic insulation.

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

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, 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 avoid or delay 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 tips to keep it in top shape:

Replace the Batteries

Clean the Thermostat Often

Adjust the Anticipator

Avoid Changing Settings Too Frequently

Be Mindful of Thermostat Placement

Set a Heating or Cooling Schedule

Calibrate the Thermostat

Take Error Codes Seriously

Take Advantage of All the System’s Features

Schedule Professional Maintenance Every Year

1. Replace 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. Clean the Thermostat Often

A buildup of dirt and dust can prevent your thermostat from working properly. Cleaning it every few months can avoid HVAC performance issues due to controller malfunctions. To clean a thermostat:

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

3. Adjust the Anticipator

If you have an older thermostat, it may have a heat anticipator. It saves energy by turning off a furnace or boiler early and allowing residual heat to maintain the room temperature. Adjusting the anticipator can restore normal cycling. This requires moving the pointer toward a higher setting if the system is cycling too frequently or a lower setting if it’s not turning on enough.

4. Avoid Changing Settings Too Frequently

Adjusting the setting too often causes your HVAC system to work harder, increasing energy consumption. This is true no matter what type of thermostat you have. However, frequent adjustments are even harder on mechanical units. It’s best to find an optimal setting so you’re not constantly adjusting the temperature or forgetting to readjust it when you leave home or go to sleep. Or, consider upgrading to a programmable or smart thermostat. 

5. Be Mindful of Thermostat Placement

Constant exposure to high heat can damage a thermostat. The unit should not be near a heat source, such as direct sunlight, a draft, 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. Consider relocating your thermostat. Or, address the problem by closing a window shade, sealing a draft, or moving heat-producing appliances (if possible). 

6. Set a Heating or Cooling Schedule

Setting a schedule can save energy, provide more consistent comfort, and avoid having to adjust the temperature throughout the day. Programmable thermostats can be set on daily or weekly schedules based on when you’re home or away. Avoid using the “Hold” feature indefinitely because it can overwork your HVAC system.

Depending on the model, smart thermostats can learn and adapt to your behavior, while geofencing allows some units to sense when you’re arriving home and adjust the temperature accordingly. Other models integrate with other smart devices so, for example, they can lower the temperature once a smart door lock is triggered.

7. Calibrate the Thermostat

If the temperature keeps fluctuating, your energy bills are increasing, or your HVAC system is running more frequently, your thermostat may need calibration. To calibrate a thermostat, compare its reading with a dependable thermometer. If the readings differ by more than 3℉ 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. 

8. Take Error Codes Seriously

If your thermostat detects a problem, it may display an error code. The user manual should list each code and what it means. Common error codes indicate:

• A malfunctioning thermostat
• A faulty temperature sensor
• The unit needs calibration
• An HVAC system error
• The filter must be replaced
• The system is overdue for maintenance
• Wi-Fi has been disconnected
• The thermostat’s batteries are low
• A faulty wiring connection
• A firmware update has failed
• An HVAC unit is overheating
• The temperature is outside the normal range

Ignoring an alert can lead to missed maintenance, which increases wear and tear. It can also lead to reduced efficiency, costly repairs, and a decreased system lifespan.

9. Take Advantage of All the System’s Features

Newer thermostats have advanced features that improve functionality and can avoid the need for thermostat repair. Some of these include:

• Eco Mode: Some programmable and smart thermostats have an Eco Mode that saves energy, reduces your carbon footprint, and can improve comfort. It also provides the convenience of automation.
• Zoning: If your thermostat is compatible with a zoning system, you can achieve the desired comfort level in each room. Zoning also helps reduce wear and tear because heating, cooling, and airflow are directed to where it’s needed.
• Energy Reports: Analyzing energy reports from a smart thermostat can help you identify usage patterns and opportunities to save energy. It can also help determine whether to schedule service, which can avoid major repairs and increase your HVAC system’s longevity.

10. Schedule Professional Maintenance Every Year

A thermostat, with the rest of your HVAC system, should be evaluated at least once a year. Your local HVAC contractor can test and calibrate the thermostat for you. They can also check the unit for issues to fix before they lead to more expensive AC, heater, or thermostat repairs.

Schedule Maintenance with Trio Heating & Air

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.