Do UV lights in HVAC really work?+
Yes. UV-C light at 254nm has been proven to kill mold, bacteria, and viruses on contact. Hospitals have used UV germicidal irradiation for decades. In HVAC systems, UV lights are especially effective at preventing mold growth on evaporator coils and in drain pans — the two most common places mold grows in Florida AC systems. The key is choosing the right type of UV system and having it professionally installed in the correct position.
How much does UV light installation cost?+
UV light installation in Miami typically costs $199–$349 for a basic coil-sanitizing UV light, $399–$549 for an air-purifying UV system like the Fresh-Aire APCO, and $799–$1,099 for a premium whole-home system like the REME HALO. Pricing depends on the UV system type, your HVAC configuration, and installation complexity. We provide free estimates so you know the exact cost before any work begins.
Are UV lights safe for pets and children?+
Yes. HVAC UV lights are installed inside your air handler or ductwork where no one can see or touch them. The UV-C light is completely contained within the sealed HVAC system. There is zero UV exposure to your family or pets. The only time the UV bulb is visible is during maintenance when a technician opens the air handler. UV lights in HVAC systems have been used safely in homes for over 20 years.
What’s the difference between coil UV and air purifying UV?+
A coil UV light shines directly on your evaporator coil 24/7 to prevent mold and bacteria from growing on the coil surface. It’s always on regardless of whether the AC is running. An air-purifying UV light treats the air as it passes through the system, killing airborne bacteria, viruses, and breaking down odors. Systems like the REME HALO combine both approaches and send purifying ions throughout your entire home.
How often do UV bulbs need replacing?+
Most standard UV-C bulbs need replacing every 12 months. Premium systems like the Fresh-Aire APCO last about 2 years. The REME HALO cell lasts approximately 2–3 years. Advanced systems like the Wave Purifier can last up to 5 years. Even though a UV bulb may still glow after its rated lifespan, the germicidal effectiveness drops below useful levels. We recommend replacing bulbs during your annual
AC maintenance visit.
Can UV lights kill mold in air ducts?+
Standard coil UV lights only kill mold where the light directly shines — typically the evaporator coil and drain pan area. They cannot kill mold inside your ductwork because UV light travels in straight lines. For mold in ducts, you need professional
duct cleaning and
mold remediation first, then a UV light to prevent regrowth. Systems like the REME HALO send active purifying agents through the ductwork, but they work best after existing mold is removed.
Do UV lights reduce allergies?+
Yes, UV lights can significantly reduce allergy symptoms by killing mold spores, bacteria, and other biological allergens inside your HVAC system. Mold on evaporator coils is one of the biggest sources of indoor allergens in Florida homes. By keeping coils clean with UV light, you reduce the mold spores being blown through your vents. Many of our Miami customers report noticeable allergy improvement within the first week after installation.
Is REME HALO worth it?+
The REME HALO is worth it if you want whole-home air purification, not just coil protection. Unlike standard UV lights that only work inside the air handler, the REME HALO produces hydrogen peroxide plasma that travels through your ductwork and into every room. It kills 99.99% of bacteria and mold on surfaces and in the air. For Florida homes dealing with humidity, mold, pet odors, or family members with allergies or respiratory issues, the REME HALO provides the most comprehensive protection available.
Do UV lights save energy?+
Indirectly, yes. Dirty evaporator coils cause your AC to work up to 30% harder, increasing energy consumption. UV lights keep coils clean by preventing biological buildup, which maintains peak AC efficiency. A UV coil light uses only 15–40 watts — less than a light bulb — but can save you significantly on cooling costs by keeping your system running efficiently. In Miami, where AC runs 8–10 months per year, clean coils make a real difference on your FPL bill.
Do you install UV lights in condos and businesses?+
Yes, we install UV light systems in single-family homes, condos, townhomes, apartments, offices, retail spaces, and commercial buildings throughout Miami-Dade and Broward County. Condos are especially good candidates because the compact air handlers in closets are prone to mold in Florida’s humidity. For businesses, we install commercial-grade UV systems and can service multiple units in the same visit. Call
(305) 607-3244 for a free estimate.
