- HEP Heat and Air
- Indoor Air Quality

Indoor Air Quality
Indoor Air Quality | Air Conditioning | Heating and Air Conditioning
For more than three decades, HEP has kept East Tennessee homes comfortable, healthy, and energy-smart. Our certified technicians pair the latest high-efficiency systems with meticulous craftsmanship, fine-tuning airflow and humidity so you feel the perfect chill without the sky-high utility bills. From swift repairs on a scorching July afternoon to whisper-quiet new installations that protect your family’s lungs from pollen, dust, and mold, we handle every detail—right down to recycling your old unit and showing you how to maximize smart-thermostat features.
Whether you’re upgrading, maintaining, or troubleshooting, you can trust HEP to treat your home like our own. We back every service with clear, upfront pricing, 24/7 emergency support, and the region’s strongest satisfaction guarantee—because great indoor air quality starts with reliable, expertly installed air conditioning. Reach out today and breathe the difference.
FAQs
How often should I have my air-conditioning system serviced to maintain good indoor air quality?
At minimum, schedule professional maintenance once a year—ideally in the spring before peak cooling season. A tune-up includes cleaning coils, checking refrigerant levels, inspecting the blower, and verifying airflow. Regular service keeps the system running efficiently, prevents mold and bacteria from growing on damp components, and ensures filters and drain lines are clean, all of which directly affect the air you breathe.
What types of air filters or purification options are best for improving indoor air quality?
For most homes, a pleated MERV 8–13 filter provides a good balance of filtration and airflow. If family members have allergies or asthma, consider a high-MERV media cabinet, an electronic air cleaner, or a whole-home HEPA bypass system. Ultraviolet (UV-C) lamps installed near the evaporator coil can inhibit mold and microbial growth, while activated-carbon filters or photocatalytic oxidation (PCO) units target odors and volatile organic compounds (VOCs). The right choice depends on your budget, existing equipment, and specific air-quality concerns.
How can high humidity levels affect my indoor air quality and AC performance?
When indoor humidity rises above 50–55 percent, dust mites, mold, and bacteria thrive, leading to musty odors and potential respiratory issues. High moisture levels also make your home feel warmer than it is, causing the air conditioner to run longer and less efficiently. Ensuring your AC is properly sized, using a variable-speed or two-stage system, or adding a whole-house dehumidifier can keep humidity in the ideal 30–50 percent range for comfort, health, and energy savings.
Is upgrading to a high-efficiency air conditioner worth it for better air quality and energy savings?
Yes—modern high-efficiency units (SEER2 ratings of 15 + or ENERGY STAR® certified) often incorporate variable-speed blowers that run at lower speeds for longer periods. This "continuous circulation" improves filtration and humidity control, resulting in cleaner, more comfortable air. You can see energy savings of 20–40 percent compared to older 10 SEER systems, and many utilities offer rebates that shorten the payback period. Pair the upgrade with a good filtration system to maximize air-quality benefits.
What are common signs that my air conditioner is negatively impacting indoor air quality?
• Increased dust accumulation on surfaces shortly after cleaning • Musty or sour odors when the system starts • Visible mold on supply vents or around the indoor coil • More frequent allergy or asthma symptoms indoors • Hot-and-cold spots or weak airflow (indicating blocked filters or duct issues) Any of these signs warrant an inspection. Replacing the air filter, cleaning the evaporator coil, and checking ductwork for leaks usually resolve most air-quality problems linked to the AC system.
Do I need professional duct cleaning, and how does it relate to my air conditioner’s performance?
Duct cleaning isn’t necessary every year, but it can be beneficial every 3–5 years—or sooner if you notice excessive dust, remodeling debris, vermin infestation, or mold. Clean ducts remove built-up contaminants that would otherwise re-circulate through your AC and living spaces. Removing obstructions also improves airflow, reduces strain on the blower motor, and can lower energy bills. Always use an NADCA-certified contractor who performs a full system inspection, not just superficial vent cleaning.