UV Lights In AC Coils?
I'm replacing my central air conditioner with a much more efficient one. (I hope Congress restores the $500 tax credit this year!) One of the options I can buy is UV lamps for the coils. Carrier makes these claims: - Kills bacteria & mold growing on the indoor coil - Enhanced indoor air quality - Enhanced air flow - Minimizes microbial build-up on coils - Improves system efficiency
Answer:
Geothermljones is spot on. You have to be cautious on the evaporator coil pans. HVAC Tech isn't thinking well. The mold that can grow will inhibit thermal transfer from the air to the coil. UV lights have been proven to increase efficiency in that respect. Albeit over time. The thing with mold though, is it requires a dark, damp and warm spot to grow. That in mind, while the air conditioning is in operation, the cooling coil hopefully is around 40º F. Not the best for mold growth. But, when standing water is left in the condensate pan, and the system is at rest [or heats during the evening, cools during the day], can leave the opportunity for mold growth. I have been in hvac for over 25 years,, a contractor for about 15,, the uv lights are the best addition to a heating and cooling system since the use of filters,, i have personally witnessed the beniftits of these lights in several homes. Istrongly recommend them and will always have one installed in my system. The benefits are many ie,, health, economics, system life.