How often do you change your UV light?
 

And who did you have do it? Thanks.

Which UV light is that?

We have Sunshine check the A/C twice a year as part of the support contract. We change it when they say it needs to be changed. I think they last for about a year so we should be due for a change on our next service check.

It is recommended to change the UV bulb annually as the UV radiant ability degrades over time.

I do the one we have, it is pretty straight forward. Just remember to not touch the glass portion of the new bulb. Finger prints cause an unwanted focal point.

What and where is this?

Ummm...ah...cough...do they use them to help plants grow,...…….like...…….indoors?????

I've never heard of this UV light. Where is it and what does it do? How would I change it myself if needed?

Part of your a/c system.

An optional part of your AC system.

The UV bulb is in your air handler. It kills mold, bacteria, and viruses.

Re: Uv light and where it is
 

We do not have one. It is an add on to your air conditioning system
and it is supposed to kill germs.

For details, I would look it up on the internet. I expect, like a florescent bulb the light drops off over time. Most of us don't notice the loss of light from a florescent bulb because it is gradual.
A UV bulb you can only see part of the light, only the visible light, so they tell you to replace it after a year.

The UV bulb used in A/C's produces much, much more UV than the kind of florescent bulbs used to grow plants. In fact you cannot use one of these A/C UV bulbs in the open, it is dangerous can can blind people.

This UV bulb thing sounds like another way for me to save money by not buying it.

I'm in a 5 year old patio villa. How can I find out if my system has one. Specifically, where do I look?

You will see a 4-6 inch plastic or metal box mounted on the outside of your air handling unit near the evaporator coil, and it will have a power cord attached to it. The bulb is replaced by sliding out a long light tube from the box. The purpose of the UV light is to prevent mold from growing on the evaporator coil inside your unit. This is on the A/C unit located inside your house or in the garage. The evaporator coil is located where the 2 copper pipes connect to the unit.