UV air purifier installation in Granger, South Bend, Mishawaka, and Elkhart from Cavinder. An in-duct ultraviolet germicidal irradiation (UVGI) system mounts inside your HVAC air handler or supply plenum and uses UV-C light to destroy the DNA of mold spores, bacteria, and viruses passing through your duct system. No replacement filters needed beyond the annual lamp change. Licensed Indiana HVAC (CO19900013). Call (574) 633-4557.
UV-C light (wavelength 200-280 nanometers) disrupts the DNA and RNA of biological contaminants, preventing them from reproducing. When mold spores, bacteria, or virus particles pass through the UV light field inside your air handler, the UV-C energy neutralizes them before they circulate through your home's ductwork.
Unlike portable air purifiers that only treat the air in a single room, an in-duct UV system treats every cubic foot of air that passes through your HVAC system - which in a typical Granger home means the full air volume is cycled through 4-6 times per day during heating and cooling season.
A UV system is not a substitute for a quality air filter - it does not capture particulates like dust, pollen, or pet dander. For particulate removal, a UV system should be combined with a MERV 11 or MERV 13 filter or an Aprilaire media air cleaner. See our air filtration page for that side of the equation.
Cavinder most often recommends UV systems in Michiana for one specific reason: evaporator coil mold. Northern Indiana's summer humidity pushes moisture onto the evaporator coil inside your air handler. This creates a surface where mold can colonize - and your blower then pushes mold-contaminated air through every room in the house.
A UV lamp positioned to continuously irradiate the evaporator coil (coil sterilization position) keeps the coil surface clear of biological growth. This has a secondary benefit: a clean coil transfers heat more efficiently, which can improve system efficiency compared to a coil with biological buildup.
One UV-C lamp mounted inside the air handler, aimed at the evaporator coil. Runs continuously (even when the blower is off) to keep the coil surface sterile. This is the most common installation for Granger and Michiana homes. Lamp replacement annually.
Two UV-C lamps installed in the return air plenum. Activates when the blower runs, irradiating the air stream as it passes through. Provides both coil protection and air stream treatment. Recommended for homes with allergy or respiratory sensitivity, or where mold history is documented.
Combines UV-C with a titanium dioxide catalyst to produce hydroxyl radicals that oxidize VOCs, odors, and gases in addition to biological contaminants. Best for homes with chemical sensitivities or significant indoor VOC sources (new construction, fresh paint, off-gassing materials).
UV-C light is harmful to skin and eyes with direct exposure, which is why the lamp is enclosed inside your air handler or plenum - not in your living space. The UV light stays inside the HVAC cabinet. There is no UV-C exposure risk in your home from a properly installed in-duct system.
No. UV-C light neutralizes biological contaminants but does not capture particulates. You still need a quality air filter (MERV 11 or higher) to remove dust, pollen, and pet dander. The two systems complement each other. Cavinder often recommends installing a UV system and upgrading to a media air cleaner at the same time.
UV-C lamp output degrades over time even if the lamp still glows. Most manufacturers recommend replacing the lamp every 9,000-12,000 operating hours, which is typically every 12-18 months for a system running during heating and cooling season. Cavinder can replace the lamp on a maintenance visit.
If the musty odor is from mold or bacteria on your evaporator coil, yes - a coil sterilization UV lamp is effective at eliminating coil mold and the associated odors. If the odor source is in the basement or elsewhere in the building, a UV system alone may not resolve it. Cavinder can assess the odor source during the site visit.
Installed cost for a single-lamp coil sterilizer is a flat-rate charge including equipment, wiring, and labor. Cavinder provides a written quote before installation. Financing available through Synchrony and Wisetack.
Call (574) 633-4557 or request a quote online. Also see our indoor air quality hub, whole-home air filtration, whole-home humidifier, and whole-home dehumidifier.
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