Indoor-air Specialists

HEP Heat and AirIndoor-air Specialists

Indoor-air Specialists | Ventilation and Air Quality | Heating and Air Conditioning | Karns

Breathe easier in Karns with HEP’s indoor-air specialists at your side. Our certified HVAC pros don’t just adjust temperatures—they track down hidden pollutants, balance humidity, and fine-tune airflow so every room feels crisp, clean, and comfortable. From advanced filtration systems to energy-smart ERVs, we tailor solutions that fit your home, your lifestyle, and East Tennessee’s ever-changing climate.

When you call HEP, you’re choosing neighbors who know the value of healthy living. We inspect, diagnose, and upgrade your ventilation and air quality with meticulous care, using state-of-the-art testing equipment and industry-leading products. Ready to swap stale, dusty air for a fresher future? One simple visit can make all the difference—schedule your in-home assessment today and start breathing the difference tomorrow.

FAQs

What indoor-air quality services do you offer to homeowners and businesses in Karns?

Our team provides a full suite of services, including air duct cleaning and sanitizing, whole-home air purifier installation, high-efficiency filter upgrades, humidification and dehumidification solutions, ventilation system design, and IAQ testing that measures particulate, VOC, CO₂, and humidity levels. We combine these services with our heating and air-conditioning expertise to deliver a complete, healthier comfort solution.

How can I tell if my home’s air quality needs improvement?

Common warning signs include persistent dust buildup, musty or chemical odors, visible mold, allergy or asthma flare-ups indoors, high humidity (over 60%) or very low humidity (under 30%), and HVAC filters clogging quickly. We also offer professional IAQ testing, which provides precise measurements of airborne pollutants so you can see exactly what’s in your air and what steps are needed to correct it.

How often should I replace or upgrade my HVAC filters for optimal air quality?

For standard 1-inch fiberglass filters, we recommend replacement every 30–60 days. Pleated MERV-8 to MERV-11 filters typically last 60–90 days, while high-efficiency media filters (MERV-13+) can last up to 6 months. Homes with pets, smokers, or allergy sufferers may need more frequent changes. Upgrading to a higher MERV rating or adding a whole-home media cabinet can dramatically reduce particles and improve system efficiency.

Will improving ventilation increase my energy bills?

When properly designed, modern ventilation—such as energy-recovery ventilators (ERVs) and demand-controlled exhaust—provides fresh air with minimal energy penalty. ERVs transfer heat and moisture between incoming and outgoing airstreams, reclaiming up to 70–80% of energy that would otherwise be lost. In many cases, balanced ventilation actually lowers energy costs by reducing indoor humidity and allowing more efficient HVAC operation.

What is the difference between an air purifier and a UV light, and do I need both?

Air purifiers (often called electronic air cleaners) capture or neutralize airborne particles like dust, pollen, and pet dander through filtration or ionization. UV lights are installed inside the HVAC system to kill or deactivate biological contaminants—mold spores, bacteria, and viruses—on coils and in the airstream. For comprehensive protection, we often recommend pairing a high-efficiency filter or purifier with a properly sized UV or UV-C/LED system. This combination addresses both particulate and microbial pollutants for cleaner, healthier air.

How frequently should my HVAC system be serviced to maintain good air quality?

We recommend two tune-ups per year: one in the spring for cooling equipment and one in the fall for heating. During each visit, our technicians inspect and clean coils, check refrigerant levels, calibrate airflow, test safety controls, and verify humidity settings. Regular maintenance keeps your system running efficiently, prevents mold growth on coils and drain pans, and ensures your indoor-air quality products (filters, UV lamps, ERVs) are functioning at peak performance.

HEP Heat and Air
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(423) 228-7742