Serenity Air Heating & Air Conditioning installs and services whole-home air purifiers, HEPA filtration systems, UV germicidal lights, humidifiers, dehumidifiers, and ventilation systems for homes across Pierce County and the Puget Sound. We also handle the ductwork that carries it all — installation, sealing, cleaning, and repair. If your family is dealing with allergies, dust that won’t quit, musty odors, or the aftereffects of wildfire smoke season, our NATE-certified technicians will identify what’s driving the problem and fix it. Call (253) 256-2914 or request service online.
Indoor air in American homes is typically two to five times more polluted than outdoor air, according to the EPA — and in poorly ventilated spaces, concentrations can reach up to 100 times higher. Pierce County’s climate makes this worse. Puget Sound’s wet winters push indoor humidity above 60% for months, which is the threshold where mold starts growing. Tightly built newer homes in South Hill, Bonney Lake, and Graham trap VOCs from paint, flooring, and cleaning products because there isn’t enough natural air exchange. Older homes in Tacoma, Lakewood, and University Place circulate decades of accumulated dust and insulation fibers through original ductwork every time the furnace runs. And during wildfire season, fine particulate (PM2.5) infiltrates homes through every gap, and standard furnace filters rated MERV 8 or below do almost nothing to stop it.
That’s why indoor air quality isn’t a luxury add-on — it’s part of how your HVAC system should be working.
We install air purification systems that integrate directly into your existing HVAC ductwork — not portable room units, but whole-home systems that treat every cubic foot of air passing through your furnace or air handler. Options range from media-based air cleaners with high-efficiency pleated filters to electronic air cleaners (EACs) that use electrostatic precipitation to capture particles traditional filters miss, including bacteria, smoke, and ultrafine allergens. We carry and install Trane CleanEffects and comparable whole-home purification systems.
For homes where air quality is a medical concern — families with asthma, severe allergies, or immunocompromised members — we install true HEPA filtration systems capable of capturing 99.97% of particles down to 0.3 microns. This includes mold spores, pollen, dust mite waste, pet dander, and many bacteria. HEPA systems require proper integration with your ductwork and blower motor to maintain adequate airflow, which is why professional sizing and installation matter.
Ultraviolet germicidal irradiation (UVGI) systems are installed inside the ductwork or near the evaporator coil to neutralize biological contaminants — mold, bacteria, and certain viruses — as air passes through. UV-C light at 254 nanometers disrupts microbial DNA, preventing reproduction. These systems are particularly effective in Pierce County’s humid climate, where the damp surface of the evaporator coil can become a breeding ground for mold and biofilm if left untreated. UV lights also help keep the coil cleaner, which improves HVAC efficiency.
Dry winter air — especially in homes with gas furnaces — can drop indoor relative humidity below 30%, causing dry skin, sinus irritation, static electricity, cracking wood floors, and increased susceptibility to respiratory infections. We install bypass, fan-powered, and steam humidifiers that connect to your HVAC system and maintain indoor humidity between the recommended 30–50% range automatically.
On the opposite end, Puget Sound’s wet climate can push indoor humidity above 60% for extended periods, especially in homes with poor ventilation or crawlspace moisture issues. Excess humidity feeds mold growth, dust mite populations, and that musty smell that no amount of cleaning eliminates. Whole-home dehumidifiers work with your HVAC system to maintain controlled moisture levels year-round — a common need in older Pierce County homes.
Tightly sealed homes need mechanical ventilation to introduce fresh outdoor air without sacrificing energy efficiency. We install energy recovery ventilators (ERVs) and heat recovery ventilators (HRVs) that exchange stale indoor air with filtered outdoor air while recovering heat or moisture in the process — reducing the energy penalty of ventilation to nearly zero.
Your duct system is the circulatory system of your home’s air quality. Leaky, dirty, or poorly designed ducts undermine every IAQ product you install. We provide duct installation, replacement, sealing, inspection, cleaning, and airflow balancing. For a detailed look at our ductwork services, see our air duct services page.
We don’t sell products first and ask questions later. Every indoor air quality project starts with understanding your home, your symptoms, and your goals.
We evaluate your current HVAC filtration — what filter type and MERV rating you’re using, how often it’s being changed, and whether your system’s blower can handle a higher-efficiency filter without starving airflow. We inspect the ductwork for visible contamination, leaks, and moisture. We check relative humidity levels and look for signs of condensation or mold. We ask about symptoms — allergies, headaches, congestion, musty odors, dust accumulation patterns — because those clues point us toward the right solution.
From there, we recommend a targeted plan. Some homes need a filtration upgrade and nothing else. Others need humidity control, UV treatment on the coil, and duct sealing. We build the solution around the problem, not around a product catalog.
Schedule your IAQ assessment today.
Serenity Air proudly serves the entire Pierce County and surrounding areas across the Puget Sound in Washington.
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Common signs include persistent dust on surfaces shortly after cleaning, musty or stale odors that don’t go away with ventilation, worsening allergy or asthma symptoms when you’re home, visible condensation on windows during winter, and family members frequently experiencing headaches, congestion, or fatigue. If your home was built in the last 15 years with tight energy-efficient construction, you’re at higher risk for poor air exchange and elevated VOC levels even if you don’t notice obvious symptoms.
It depends on your system’s blower capacity. Most residential HVAC systems can handle a MERV 11 to MERV 13 filter without significant airflow restriction. MERV 13 captures most mold spores, pollen, dust, and some bacteria — and is the minimum rating recommended by ASHRAE for adequate indoor air quality. Going higher (MERV 16+) requires a system that’s designed for the additional static pressure, or a separate bypass HEPA filtration cabinet. We evaluate your specific equipment before recommending a filter upgrade so you don’t restrict airflow and damage your blower motor.
Yes — but they work for a specific purpose. UV-C germicidal lights installed near the evaporator coil are effective at preventing mold and biofilm growth on the coil surface, which is a common problem in humid climates like Pierce County’s. They also reduce airborne bacteria and some viruses as air passes through the system. UV lights are not a substitute for filtration — they don’t capture dust, allergens, or particulate. They’re most effective as one layer in a multi-component IAQ strategy.
Significantly. Fine particulate matter (PM2.5) from wildfire smoke can penetrate homes through gaps, ventilation intakes, and even when doors and windows are closed. Standard furnace filters do very little against PM2.5 particles. During active smoke events, a MERV 13 or higher filter combined with a whole-home air purifier provides the strongest protection. We also recommend keeping windows closed and running your HVAC fan continuously on the “on” setting (not “auto”) to maximize passes through the filter during smoke events.
The National Air Duct Cleaners Association (NADCA) recommends duct inspection every two to three years, with cleaning as needed based on findings. In Pierce County specifically, homes with crawlspace ductwork, pets, or visible mold or dust accumulation may benefit from more frequent attention. Duct sealing — addressing leaks that allow unfiltered air from attics, crawlspaces, or wall cavities to enter the system — is often more impactful than cleaning alone. See our air duct services page for details.
Still have questions? Reach out to our team today—we’re here to help with anything not covered in the FAQs.
