How Much Does it Cost to Replace a UV Light in an AC Unit?

Installing UV lights in your HVAC system is a great way to improve indoor air quality and reduce the amount of harmful particles. While attempting to install these lights yourself can be tempting, errors during the process can make them ineffective and render any savings useless. In the long run, installing UV lighting in your air conditioning system can save you money, as UV systems allow air conditioning units to operate up to 35% more efficiently. Ultraviolet light exists within the light spectrum with wavelengths between 100 and 400 nanometers (nm).

Lights that sterilize coils don't need as much power, since they are more focused on a specific area and the lights don't have as much space to diffuse.


lights are relatively affordable, especially when compared to air filtration systems, such as air purifiers and filters. UV lights for air conditioning systems work by eliminating bacteria, microorganisms and mold to keep the air inside the house clean and safe. We recommend installing an ultraviolet light system designed to disinfect air in the return air duct of the air controller.

Unlike a filter that traps particles of more than a certain size, an ultraviolet light purifier acts directly on specific types of particles and kills bacteria, viruses, or mold cells that could otherwise make members of your household sick. Mounting UV lights in all ducts of the system will require more work and is not recommended. Most UV HVAC lamps are designed to be able to draw energy from the fan, so that they only work while the air controller is turned on. The UV lights that sterilize the coils are designed to sterilize contaminants from the evaporator coil and the drain tray inside the HVAC system.

Once you understand what UV lights can do for your home and how much they cost, you can make a better decision about their value.

Grady Ungvarsky
Grady Ungvarsky

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