Air Purifying UV Light Installation in Austin, TX
Stop mold and bacteria where they actually start, on the damp coil inside your air handler. Andrew installs and places the lamp himself, so it treats the air instead of just glowing behind a panel.
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UV Light Installation for HVAC Systems in Austin, TX
Fight Mold, Bacteria, and Odors at the Source
At Andrew & Sons Air Duct Cleaning, LLC, we’re all about helping Austin homeowners breathe cleaner, healthier air. According to a recent VELUX study, Americans spend nearly 90% of their time indoors, that’s over 21 hours a day. With so much of life happening inside, your home’s indoor air quality matters more than ever.
We’ve already covered the importance of air duct cleaning, dryer vent cleaning and attic insulation. Today we want to highlight another powerful tool for cleaner air: air purifying UV light installation in your Austin HVAC system.
What Is Ultraviolet (UV) Light?
Ultraviolet (UV) light is a proven method used in hospitals, airplanes and labs to kill bacteria, viruses and mold. These lights are powerful enough to damage skin and eyes, just like the sun’s rays, which is why they are placed safely inside your HVAC system.
Will UV Light Kill All the Mold in My Home?
Not exactly. UV lights are highly effective at killing mold and bacteria on HVAC coils, but they only work where the light shines directly. So while a UV system prevents mold growth inside your HVAC unit, it will not address mold from water leaks in walls or ceilings. For example:
- Black mold (Stachybotrys) typically grows on damp drywall, not in ductwork.
- UV light will not neutralize airborne mold spores throughout the home.
- It does not replace mold remediation for structural moisture issues.
What UV lights do reliably is cut microbial buildup on the coil, which improves system performance, airflow and air quality.
UV Light Installation in a Round Rock Home
We had just finished cleaning this Round Rock home’s air vents when the owner asked how to keep it that way. Andrew fitted the UV lights the same afternoon.
Andrew fitting UV lights in a Round Rock home.
Best Placement for UV Lights
Correct placement is what decides whether a UV light actually works:
- Over the CoilIdeal for disinfecting the main evaporator coil, mounted in the center of the duct above it.
- End Coil SystemsThe light is offset so it shines across all three coil slabs.
- Air HandlersA dual lamp system, one mounted above and one between the coil and blower motor, for full coverage.
Our UV Light Installation Process
- Assess your HVAC system. We work out the best location for maximum coverage and airflow.
- Mount the device. A custom hole is cut into the duct board and the mounting plate is secured.
- Install the bulb. A germicidal UV-C bulb is fitted and aimed directly at the target surfaces.
- Power the system. The unit runs off a nearby 120V to 277V outlet and is designed to stay on continuously.
- Safety check. We add a peephole so you can view the light safely, then test the system for proper function.
Safety: never look directly at a UV light. Our technicians wear protective gear or shut the power off while servicing one.
Benefits of UV Lights
- Kills bacteria, viruses and mold on HVAC components
- Reduces odors and allergens
- Inexpensive to run and low maintenance
- Improves overall indoor air quality
What Our Customers Say
Proudly Serving the Greater Austin Area
At Andrew and Sons, we bring 25+ years of trusted air duct cleaning to homes and businesses across Central Texas. If you’re in or near any of the locations below, clean air is just a call away:
Not sure if we service your area? Give us a call—we’re always expanding and happy to help wherever we can!
Schedule Indoor Air Quality Testing in Austin Today
Whether you’re a homeowner, landlord, or business owner, we’re here to help you take the guesswork out of clean air. Schedule your indoor air quality inspection today with a team that truly cares
UV Light Installation in Austin: Common Questions
What does a UV light in the HVAC system actually do?
It sits near the coil and stops mold and bacteria growing on the wet surfaces inside your air handler. In Austin humidity that coil stays damp for much of the year, and that is exactly where growth starts.
Will a UV light fix my allergies?
It helps with the biological side, mold spores and bacteria, but it does not capture dust or pollen. If cedar pollen is your main problem then filtration and sealing the ductwork matter more. Andrew will tell you which one your house actually needs rather than selling you both.
How long do the bulbs last?
Most need replacing every twelve months. A bulb can still glow after it has stopped being effective, so you cannot judge it by looking. We note the install date so you know when it is due.
Is it safe to have UV light in the system?
Yes, when it is installed properly. The lamp is fully enclosed inside the ductwork so there is no exposure in your living space. Placement is what makes the difference, which is why this is not a good do it yourself job.
We are a family owned company working out of Round Rock. Along with Austin we install UV systems in Round Rock, Cedar Park and Leander and surrounding areas.