Hello, I'm a homeowner. I have just had my furnace replaced. There is a Honeywell humidifier and a U.V. lamp on it. They were wired to stay on even when the furnace is off. The installer said it will put more humidity into the air this way. It doesn't seem right to me. What say you?
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Humidifier & U.V. lamp wiring
- Thread starter kilzok
- Start date
rlitman
Well-known member
Two different devices here. UVGI lamps don't like to be re-lit frequently. At my office, we run them for 12 hours a day both for extended longevity as well as some energy savings, but in a residential setting, you're probably best leaving it on 24x7. My sources tell me that you can expect to remove an hour of life from your UV bulbs with every lighting, so if you cycle it with the blower, you may greatly shorten it's life cycle. Just plan on replacing the bulb annually or perhaps bi-annually.Hello, I'm a homeowner. I have just had my furnace replaced. There is a Honeywell humidifier and a U.V. lamp on it. They were wired to stay on even when the furnace is off. The installer said it will put more humidity into the air this way. It doesn't seem right to me. What say you?
As for the humidifier, I'd need to know the model to know more.
rlitman
Well-known member
Sounds like what I expected. That humidifier isn't doing anything when the blower is off. Just leave it powered on....My humidifier is a Honeywell HE365A
Sounds to me like the installer go lazy. Depending on the controller that came with the humidifier can be wired in to run the furnace blower if there is a call for humidity. That is the way I would have done it. Or at least connect the humidifier so it runs only when the furnace blower if running.
The light running all the time I don't have issues with that.
The light running all the time I don't have issues with that.
LS6 Tommy
Well-known member
The humidifier needs a current sensing relay or sail switch. It should only run when the HVAC blower is running. You can "flood" your ductwork if you don't.
Tommy
Tommy