Breathe easier, Fairfield
We install filtration, humidity control and ventilation equipment in Fairfield, Ohio. We measure humidity, particulates and ventilation before recommending anything. Most calls get handled the same day, and someone answers the emergency line at any hour.
Filtration, purification, and humidity control for allergy season, dry winters, and everything the Cincinnati-area air brings inside.

Matched to your air, not a catalog.
What do UV lights in the ductwork actually do?
Two quite different jobs get sold under one name. A coil light aimed at the evaporator keeps growth off a surface that is wet for half the year, and that one has a straightforward case: it keeps a coil clean and it keeps the musty smell down. An air-stream light is meant to treat organizms as they pass, and air moves quickly, so contact time is short and the benefit is much harder to demonstrate. If someone is quoting UV, ask which of the two it is and what it is being asked to fix.
Our house is new. Why does the air feel worse?
Because it is tight and because it is new, and those are two separate effects. A well-sealed shell holds indoor moisture and cooking byproducts instead of leaking them away, so anything generated indoors stays longer. New materials also off-gas for months: flooring, cabinets, paint, adhesives and furniture. Ventilation is the answer to both, and in a new house that usually means using the mechanical ventilation that is already installed rather than adding equipment.
Is it worth testing the air, and for what?
Two measurements are cheap and genuinely useful: relative humidity and particulate. A basic hygrometer in a couple of rooms tells you more about your house than most paid assessments, because humidity drives so much of the rest. Beyond that, be careful what you are being sold. Broad contaminant panels tend to produce a list of things present in every house at levels nobody can interpret, and the result is usually a quote rather than an answer.
We have pets. What actually helps?
Filtration does real work here, because pet dander is a particle and particles are exactly what filters catch. A proper media cabinet is worth far more than a denser one-inch filter, and it also needs changing more often than the box says in a house with animals. Beyond that, the return grille is worth vacuuming regularly, because that is where hair collects, and a restricted return causes more problems than the hair itself ever would.
