| Author |
Message |
    
millie amoresano
Citizen
Username: Millieamoresano
Post Number: 322
Registered: 11-2003
| | Posted on Sunday, July 16, 2006 - 2:09 pm: | 
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My thermostat has a"fan" and "auto" switch. When running my central air should I have it on fan or auto?
Thanks,
Millie |
JC
Citizen
Username: Demolitionman
Post Number: 14
Registered: 6-2006
| | Posted on Sunday, July 16, 2006 - 2:51 pm: |
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auto |
Tom Reingold
Supporter
Username: Noglider
Post Number: 15073
Registered: 1-2003
| | Posted on Sunday, July 16, 2006 - 3:22 pm: |
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fan means turn the compressor off, i.e. no cooling. |
Robert O'Connor
Citizen
Username: Local24
Post Number: 33
Registered: 3-2006
| | Posted on Sunday, July 16, 2006 - 4:35 pm: |
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The short answer is, it depends.
If you have it wired as per the manufacturer's installation instructions, and have a thermostat say that controls both the heating & cooling, but the heating is for a water boiler (as an example) and not a combination heating cooling unit, you could click the heating/cooling button to cooling, then the fan/auto to fan, and If you have a variable speed air handler for cooling, the air conditioning will work and the condensor will shut off (stopping cooling) when the thermostat is satisfied (as well as the high speed fan in the air handler). Now, the air handler will still be running but (depending on the set speed) but at a very low (probably half speed or less) and will continue to re-circulate the air. |
moving soon
Citizen
Username: Movingsoon
Post Number: 129
Registered: 12-2004
| | Posted on Sunday, July 16, 2006 - 8:16 pm: |
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my system has two switches:
one that says "heat/off/cool" the other saying "fan/auto."
I assume you're talking about fan/auto. My a/c installers recommended keeping the fan on all the time. The condensor switches on and of as needed to maintain temperature, and by keeping the fan on all the time, the air keeps circulating, a good thing. The fan uses minimal electricity (it's the condensor that uses most of the power). |
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