Done improves indoor air quality through a comprehensive set of services covering filtration, humidity control, biological contamination, ductwork, and ventilation — addressing the full picture rather than selling a single product as a universal solution. For Denver-area homeowners, indoor air quality is a year-round concern: dry winters, wildfire smoke seasons, high-altitude dust, and the tight construction of modern homes all create conditions where the air inside can be significantly more polluted than the air outside.

Assessment First: Understanding What’s Actually in Your Air

Done’s approach to indoor air quality starts with diagnosis rather than assumptions. A Done technician can evaluate your home’s air quality by examining your existing filtration, measuring humidity levels, inspecting your HVAC system’s coils and ductwork, and identifying specific sources of contamination. This matters because different problems require different solutions — a home with a humidity problem needs a humidifier, not a UV light; a home with mold growth on the evaporator coil needs coil treatment and a UV system, not just a better filter. Getting the right answer requires looking at your specific home first.

Filtration Upgrades

The most common and often highest-impact improvement Done makes is upgrading a home’s air filtration. Most homes ship with 1-inch fiberglass filters that capture only large particles. Done installs whole-home media filter cabinets — typically 4- or 5-inch deep-pleated filters at MERV 11–16 — that capture fine particles including dust mite debris, pet dander, pollen, mold spores, and wildfire smoke particulates. These filters are installed on your existing HVAC system’s return-air side and treat all the air in your home every time the system runs.

UV Germicidal Systems

UV-C germicidal lights installed in your air handler or ductwork inactivate biological contaminants — mold, bacteria, and viruses — as air passes the lamp. They’re particularly effective at preventing mold growth on evaporator coils, which is one of the most common (and overlooked) sources of indoor air quality problems in residential HVAC systems. A moldy evaporator coil disperses spores into every room whenever the system runs; a UV lamp eliminates the growth and keeps the coil cleaner, which also improves the system’s energy efficiency.

Whole-Home Humidifiers

Colorado’s semi-arid climate means most homes need added humidity in winter. Indoor relative humidity below 30% causes dry skin, nosebleeds, irritated airways, cracked wood floors, and can increase the transmission efficiency of airborne viruses. Done installs whole-home humidifiers that connect to your furnace or air handler and automatically maintain healthy humidity levels (35–50% RH) throughout the entire house — not just one room. The difference in comfort is typically noticeable within days of installation.

Duct Cleaning and Sealing

Your ductwork is the distribution system for everything your HVAC handles — conditioned air and whatever contaminants are inside the ducts. Years of accumulated dust, dander, mold, and debris inside ductwork circulate through your home every time the fan runs. Done’s professional duct cleaning removes this reservoir of contaminants. Duct sealing addresses leaks that pull unconditioned air from crawl spaces, attics, or garages into the air stream — including potentially soil gases, insulation fibers, or outdoor pollutants.

  • Whole-home media filter upgrades for particulate capture
  • UV-C germicidal systems for mold, bacteria, and virus inactivation
  • Whole-home humidifiers for Colorado’s dry climate
  • Duct cleaning to remove accumulated contaminant reservoirs
  • Duct sealing to prevent infiltration of unconditioned air and soil gases
  • Electronic air cleaners for ultrafine particle capture

Ongoing Maintenance

Done’s Care Club maintenance membership includes annual HVAC tune-ups that directly support air quality — technicians clean coils, check for mold or biological growth, inspect filters, verify humidifier operation, and confirm that all air quality equipment is functioning properly. Air quality isn’t a one-time fix; it requires ongoing attention as filters load up, UV lamps degrade, and seasonal conditions change.

Visit our indoor air quality page to explore the full range of solutions Done offers, consider duct cleaning if it’s been several years since your last service, and explore the Care Club to keep your air quality systems performing year-round.