can a fan affect the thermostat operation?

Old 01-18-09, 08:03 AM
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can a fan affect the thermostat operation?

I've always heard wind chill cant make inanimate objects cooler. But i was wondering if i have an air cleaner in my dining room, about 8ft away from the thermostat, can that fan affect the call for heat and cool off the sensor?
Old 01-18-09, 03:03 PM
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If the air near the cleaner is colder ... for example at floor level, it could blow cooler air past the sensor... and affect the operation. There is always some 'stratification' of air temp from floor to ceiling. You can prove this by putting two thermometers in the room at the floor and the ceiling.

What might happen though is that the air cleaner would tend to reduce this stratification and the thermostat might see a better 'average' room temperature.
Old 01-18-09, 03:36 PM
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Just a theory here. If the thermostat has a heat-anticipator feature, I could visualize that a draft might affect it a little?

If that theory were valid, then the draft might diminish the heat anticipator function, causing the run times to lengthen a bit?

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