What Are UV Lights for HVAC Systems?
Learn how installing UV lights for your HVAC system can improve the air quality in your home.
By Tom Moor
As a homeowner, you may watch your thermostat like a hawk – making sure nobody else is messing with it and that it’s always set to the perfect temperature for both comfort and efficiency. But there’s one aspect of your home’s comfort that often goes unnoticed: indoor air quality (IAQ).
It’s easy to assume that if the temperature feels just right, everything else is fine, too. But the reality is, that airborne bacteria, viruses, mold spores, and other particles could be circulating in the air, impacting your health without you even realizing it. For those with allergies, asthma, or other respiratory issues, this can make life uncomfortable.
That’s where ultraviolet (UV) lights for HVAC systems come in. These units are designed to help eliminate harmful microorganisms in your home, improving air quality and making it easier to breathe. Keep reading to learn more about how UV light air purifiers work, the benefits they offer, and whether they’d be a good fit for your HVAC system.
What are UV lights for HVAC systems and how do they work?
UV lights are installed within your HVAC system, usually near the evaporator coil or in the return air duct. Their purpose is to kill or neutralize harmful microorganisms like bacteria, mold spores, and viruses that may be floating through your home, which can exacerbate allergy or asthma symptoms.
The real benefit comes when the UVC light, a specific type of ultraviolet light, shines on these tiny pathogens. Short-wave UVC light penetrates their cellular walls and destroys both their nucleic acid and DNA, which prevents them from reproducing, spreading, or harming your family members. As a result, cleaner evaporator coils and ductwork help your HVAC system run more efficiently, improving the air quality in your home.
For optimal performance, HVAC UV lights work best when humidity levels are balanced. The U.S. Environmental Protection Agency (EPA) recommends keeping indoor humidity between 30-50% to prevent mold and bacteria, which thrive in higher humidity.
What makes UV lights different from other air cleaners?
The difference between UV lights and other air purification systems lies in what irritants each one targets. Traditional filters and whole-house air cleaners do a great job capturing larger particles like dust, pet dander, pollen, and even some mold spores. However, they may not be as effective at catching smaller, invisible contaminants.
That’s where UV lights stand out. They don’t capture or filter particles; instead, they neutralize microorganisms that sneak through your regular filtration system. UV lights work in tandem with your current air filters to target these particles that might be causing respiratory problems, allergies, and other health issues.
The benefits of installing UV lights for AC systems
Improved air quality
Because UV lights for air conditioners help clear the air of harmful pathogens, they can make a huge difference for allergy and asthma sufferers. Instead of inhaling these substances, you’ll breathe cleaner, healthier air, which reduces the risk of flare-ups and respiratory issues.
Prevention of mold and bacteria growth
Mold and bacteria love the moist, warm environment of your HVAC system, and they can grow quickly. UV lights act as a mold and bacteria deterrent, keeping your system cleaner and preventing these organisms from spreading into your home. Mold can be particularly dangerous as it can trigger allergic reactions, respiratory issues, and worsen asthma symptoms.
Cleaner HVAC system
Mold and bacteria can accumulate in your HVAC system over time, particularly around the evaporator coil. UV lights, installed near the coil, help prevent this buildup, meaning your HVAC system will run more efficiently and be easier to maintain. A clean system runs more reliably and can also help extend your equipment’s lifespan.
Lower energy bills
When your HVAC system stays cleaner and operates more efficiently, it uses less energy to maintain your home’s temperature. This can result in lower utility bills over time. Not only are you improving the air quality, but you may also save money in the process – a great bonus!
Healthier environment
Whether you’re dealing with respiratory issues or just want to breathe fresher air, a UV air cleaner can be incredibly beneficial. By reducing airborne bacteria, viruses, and mold spores, you’re creating a healthier home for everyone, especially those who are more sensitive to air quality.
How long do UV bulbs last?
HVAC UV lights typically last anywhere from 1 to 5 years, depending on the brand, light, and system conditions. An HVAC technician can inspect the UV lights during regular maintenance visits to ensure they’re functioning properly and replace the bulbs if needed to maintain optimal air quality.
Contact your local American Standard® dealer
If you’re concerned about the air quality in your home, contact a local American Standard dealer to find out if a UV light air purifier might be right for your home. They’ll guide you through the available options, provide expert recommendations, and ensure the system is installed correctly for ideal performance.
By working with an American Standard dealer for all of your indoor air quality needs, you’ll have the peace of mind of knowing you’re doing your best to keep your indoor air clean, fresh, and healthy. So, take a step toward better air quality today and breathe easier with the help of UV lights.
Author: Tom Moor
Expert review by Sean Goddard, Product Manager, Coils & Indoor Air Quality
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