What Are HVAC UV Lights?
HVAC UV lights are an add-on that helps kill contaminants in your indoor air, improving your home’s overall air quality. These pollutants can be bacteria, fungi, debris, and even harmful viruses. The lights emit UVC rays, which cut through the microorganisms, killing everything down to the DNA.
This method not only eliminates the presence of these contaminants but also prevents any future spread.
What Are The Types of UV Lights for an HVAC System?
UV lights come in two different versions, each providing a method to its sanitizing processes. The two types are evaporator coil-sanitizing lights and air-sanitizing lights. We’ll break down the evaporator coil version first.
Evaporator Coil Sanitizing Lights
Fluorescent UV lights are installed above or next to the evaporator coil in your furnace or air handler. This coil is responsible for cooling the air in your home by circulating refrigerant. The refrigerant leads to increased moisture and low temperatures, which can attract harmful bacteria, including mold.
Air Sanitizing Lights
This add-on is installed directly inside your ductwork, where it targets and neutralizes airborne contaminants such as viruses and bacteria. The lights function as a whole-home purifier.
During the installation process, the sanitizing lights can be hard-wired directly to your system. They can be turned on or off in response to the operation of your heating or cooling system. This means that whether your system is running for heating or cooling, the sanitizing lights will keep your air fresh and clean.
Why Humidity Control Matters for Effective UV Filtration
A balanced humidity level is key for HVAC ultraviolet lights to work their magic. When humidity levels get too high, the excess moisture in the air creates the perfect environment for airborne pollutants to grow and spread. The ideal humidity percentage is around 30% to 50%, according to the Environmental Protection Agency (EPA). Anything above that is risking some nasty air invaders.
The Pros and Cons of Germicidal UV Lights for HVAC Systems
The Pros
With an installation of HVAC ultraviolet lights, you can expect a myriad of benefits, including:
Improved Indoor Air Quality
UV lights’ main purpose is complete sanitization, clearing out 99% of everything from mold, bacteria, viruses, and even irritating pollen. When properly installed, circulating air is cleansed of any potential contamination.
Reduce Volatile Organic Compounds (VOCs)
Volatile organic compounds are chemicals that evaporate into the air, such as benzene or ethanol, which can cause putrid odors. A lot of these chemicals can come from activities like cooking, smoking, or even our pets. The UV lights target these compounds and reduce their quantity, diminishing the presence of nasty smells.
Increased Energy Efficiency
Your HVAC’s components play a key role in system functions like the evaporator coil. When mold and other bacteria grow on the surface, it can cause actions like heat transfer to be disrupted. A UV light prevents these accumulations, allowing your system to run at increased efficiency, thus reducing your energy costs.
Extended Lifespan
Your system and its various parts last much longer when they are kept clean. HVAC UV lights eliminate the presence of bacteria in both the system and in your ducts. The consistent sanitization prevents issues like clogs and internal damage.
Easy Installation & Low Maintenance
Installation for UV lights is lightning fast, especially when you have a professional performing maintenance on your system. The lights themselves last you around 1 to 2 years, but always make sure to go by the manufacturer to know your specific range.
The Cons
Even though the benefits outweigh the cons, there are a few potential downsides of UV lights.
Upfront Costs
As simple as they look, UV lights unfortunately can come with a bit of sticker shock. One UV unit can cost anywhere between $100 to $1,000, and getting them installed properly requires an HVAC specialist to perform the process.
Potential Safety Hazards
UV rays are not safe, as exposure to the lights can cause severe damage. Here are some safety considerations when you have a UV light installation:
- Do not touch the UV lamp when it is on, as the fluorescent bulb and rays cause damage at skin contact
- Never look directly at the UV lamp, as the rays can cause severe, permanent eye damage
- Ensure the lamps are completely locked inside your HVAC system to prevent potential exposure
- Turn off UV power when performing routine maintenance, repair, or replacement
- When performing a DIY installation, make sure to wear protective gear
Effectiveness
As effective as UV rays are, the only germs that they get rid of are the ones that they come in contact with. This means any debris stuck in the ducts or air filters remains there until either you or a professional removes it.
Are HVAC UV Lights Worth the Investment?
Are these lights worth it for your HVAC? We think so. The upfront cost may seem shocking at first, but the overall health benefits far outweigh the price.
If you are considering an ultraviolet light installation for your HVAC system, you’ll want to call the experts at Charles Stone. As a trusted HVAC service provider since 1991, we make sure any installation for your home fits it perfectly.
We perform in-depth inspections of your HVAC setup and provide informed recommendations for your filtration needs. With our experts on your side, you can breathe easy again.
