Learn · Indoor Air Quality
Indoor Air Quality Basics for Kentucky Homes
Filtration, humidity, and ventilation — the three levers that decide how healthy your indoor air is.
What "indoor air quality" really covers
Indoor air quality (IAQ) comes down to three levers: filtration (capturing particles, rated by MERV), humidity (humidity control keeps you comfortable and discourages mold), and ventilation (fresh-air exchange). Kentucky's humid summers make the humidity lever especially important.
When to pay attention to IAQ
Allergy or asthma flare-ups indoors, persistent dust, musty smells, static in winter, or a clammy feeling in summer all point to an IAQ issue rather than a temperature one.
Failure modes to watch for
- A too-restrictive filter — a very high MERV filter on a system not designed for it chokes airflow.
- Uncontrolled humidity — above ~60% invites mold; below ~30% dries you out.
- "Sealed-tight" homes with no ventilation — efficient but can trap pollutants.
Proof
We match IAQ upgrades to the system and the home — never a one-size-fits-all upsell.
What to do next
Explore indoor air quality services or have a tech assess your filtration and humidity during a visit.
About the author
Kenneth Ferrell · Founder
Kenneth Ferrell founded Ferrell's Air Conditioning & Heating in Shelbyville, Kentucky in 1980. With more than four decades in heating and cooling, he built the company into a Carrier Factory Authorized Dealer staffed by NATE-certified technicians and earned Carrier's President's Award. He still believes in honest prices and treating customers like neighbors.