Whole-Home UV Lights and Air Scrubbers in Las Vegas
In-duct UV lights and air scrubbers treat the air and surfaces inside your HVAC system. They add to good filtration and ventilation without replacing either, and we will tell you plainly what they can and cannot do.
- 24/7 emergency service
- Licensed technicians
- All makes and models
What in-duct UV lights and air scrubbers are
Whole-home sanitation is a catch-all name for devices installed inside the air handler or ductwork that treat air and surfaces instead of filtering out particles. There are two main kinds.
- UV-C lamps. These produce ultraviolet light in the germicidal range, which is designed to damage microorganisms such as mold and bacteria so they cannot multiply. A coil lamp shines on the indoor coil and drain pan around the clock. An air-stream lamp sits in the duct and exposes the air moving past it.
- Active air purifiers. Often sold as air scrubbers, these sit in the supply duct and typically use UV light on a coated surface, or ionization, to release reactive molecules or charged particles into the airstream. They are designed to react with some airborne contaminants and odors out in the rooms, and to help fine particles clump together so the filter can catch them.
Neither type removes dust, and neither brings in outside air.
What to expect, and what not to
We keep our claims about this equipment modest, because results in a real house depend on the product, where it is mounted, how fast the air moves and how the home is used. Laboratory figures do not carry over directly to a living room, so we do not quote removal percentages or promise health benefits.
The most dependable use is a UV lamp on the coil. The coil and drain pan are dark and at times damp, and constant light on those surfaces is designed to limit growth there. That helps keep the coil clean and can reduce musty smells that start at the unit. Air-stream lamps have only a brief moment to act on passing air, so their effect varies more.
Two cautions apply. Some ionizing and oxidizing devices can produce ozone, which irritates the lungs, so ozone generators do not belong in an occupied home, and it is worth choosing equipment that has been independently tested for ozone emissions. And UV-C light harms eyes and skin: never look at a lit lamp, and switch off the power before opening the cabinet.
Where sanitation fits in a Las Vegas home
The main air quality problem in this valley is dust, and dust is a filtration problem. Before adding a lamp or scrubber, get the basics right, in this order:
- A filter with a suitable rating that fits tightly and is changed on time. See our page on air filtration and purifiers.
- Ducts that do not leak, so the system is not drawing dusty attic air in past the filter. Duct testing and sealing covers that.
- Kitchen and bathroom exhaust fans that work and vent outdoors.
Once those are in place, sanitation equipment can add a further layer for specific concerns: a musty smell when the system starts, lingering cooking or pet odors, or a coil that keeps fouling. Our dry air means coils generally stay drier than they do in humid climates, but monsoon humidity and everyday indoor moisture still leave coils and drain pans damp at times. Air-stream devices only treat air while the blower runs.
Installation and lamp replacement
Installation is usually straightforward. We choose a mounting point near the coil or in the supply plenum, cut and seal the opening, wire the unit to the correct power source and confirm it is operating. Placement takes some thought, because UV light degrades certain plastics, flexible duct liners and filter material that sit in its direct path.
The upkeep is simple but easy to forget. A UV lamp loses output with age even though it still glows, so it has to be replaced on the manufacturer's schedule, typically every one to two years. The cells in active purifiers wear out on a schedule as well. Dust on a lamp blocks light, so it should be wiped clean during routine service, and a maintenance plan visit is a convenient time for that. Most UV lamps contain a small amount of mercury and should be recycled, not put in the household trash.
Asking us about UV lights or an air scrubber
Start by telling us what prompted the question: an odor, visible dust, a recent remodel or something you read. A licensed technician will inspect the system, check the filter and ducts first, and say honestly whether a UV lamp or active purifier is likely to help or whether your money is better spent elsewhere. If you already have one, we replace lamps and cells and service all makes and models. Reach us at 702-497-0888.
Frequently asked questions
Still have a question? Call 702-497-0888.
Do UV lights in an HVAC system actually work?
They do what they are designed to do when they are correctly sized, placed and maintained, and the clearest case is a lamp aimed at the indoor coil. Continuous UV-C exposure is designed to limit growth on the coil and drain pan. Treating fast-moving air in a duct is harder, and results there depend on lamp strength, duct size and airflow.
Is an air scrubber the same as an air filter?
No. A filter physically traps particles as air passes through it. An air scrubber, or active air purifier, does not trap anything; it releases reactive molecules or ions intended to act on contaminants in the air and on surfaces. The two do different jobs, and a scrubber is meant to work alongside a good filter, never in place of one.
Do these systems produce ozone?
Some can. Ozone may be a by-product of certain ionizers, oxidizing purifiers and UV lamps that emit at ozone-producing wavelengths. Ozone is a lung irritant, so it is worth asking for a product's tested ozone emission level before you buy. Ozone generators are a different product and are not meant for occupied homes. Look for equipment that has been independently tested for ozone.
How often do UV lamps need to be replaced?
Typically every one to two years, depending on the lamp and the manufacturer's rating. The visible glow is not a reliable guide, because UV output declines well before the lamp burns out. Follow the schedule for your model. Replacement is quick, but the power must be off first, and the glass should not be handled with bare fingers.
Will a UV light get rid of the smell from my vents?
It may, if the smell comes from growth on the indoor coil or in the drain pan. It will not fix odors with other causes, such as a dirty filter, a dead rodent in the ductwork or a dry drain trap letting sewer gas in. We track down the source of the smell before recommending any equipment, because a lamp aimed at the wrong problem changes nothing.
Related air quality services
Schedule service
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702-497-0888- 24/7 emergency service
- 3200 Kings Way, Las Vegas, NV 89102
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