Breathe easier, Xenia
We install filtration, humidity control and ventilation equipment in Xenia, 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 Miami Valley air brings inside.
Matched to your air, not a catalog.
The basement smells musty and it is spreading upstairs.
Basements run cooler, so humid summer air condenses down there, and anything the air handler pulls in gets distributed to the whole house. Measure the relative humidity before doing anything else. Above about 60% the answer is dehumidification and finding where the water is coming from, not air freshening. Check the obvious sources first: grading and downspouts outside, an uninsulated cold-water line sweating, and a condensate drain that is discharging where it should not.
What actually helps with allergies at home?
In rough order of effect: keep humidity between about 35 and 50%, upgrade to real media filtration sized for the system rather than a denser one-inch filter, deal with the source where you can, and only then look at added equipment. Bedrooms matter more than the rest of the house because of how many hours are spent in them. Nothing here is dramatic on its own, and the combination usually is, which is the opposite of how air quality equipment tends to be sold.
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.
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.