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bexterinni61

09:44PM | 01/17/11
Member Since: 03/19/05
4 lifetime posts
Bvhvac
I have a Hunter 44100 programmable thermostat, which has been in use for several years. I believe that the thermostat needs to be re-calibrated - the house feels colder than the temperature reading indicates. This is a relatively new issue, beginning last heating season and continuing this year.

Does anyone know how I can re-calibrate the temperature?

~bexterinni

LarryG

07:43AM | 01/18/11
Member Since: 07/22/04
529 lifetime posts
No there is no "calibration" adjustment on the thermostat. It could be a humidity issue. Moist air feels warmer than dry air at the same temperature. What you might want to do is get a free standing thermometer so you could compare it to the reading on the thermostat to verify that the thermostat is giving you an accurate reading. I don't know what else to tell you.

Aicrules

09:01PM | 01/18/11
Member Since: 01/05/11
18 lifetime posts
You might be able to. Did you open it up, check the connections and see if everything is clean? The slightest build up of dust on the thermometer can cause a problem. Tighten all the wire connections after you rub the ends with a soft brush.

You can check the temperature by taping a thermometer to the wall a few inches away from the thermostat. You just need to put a piece of cardboard or paper towel behind it so it's not touching the wall.

LarryG

10:25AM | 01/20/11
Member Since: 07/22/04
529 lifetime posts
More info from the actual manual for the thermostat in question. Quote:"Your thermostat is preprogrammed at the
factory to cycle when the temperature rises
1° above or 1° below the temperature setting
to provide maximum comfort. It cannot be
changed." Question: Have any trees been trimmed or any furniture been moved allowing sunlight to shine onto the thermostat since? Also I've heard of dust and dirt affecting those old mercury thermostats with the spring but not the new digital ones.They don't even need to be level. In othe words I think the thing is working properly.

bexterinni61

10:34AM | 01/20/11
Member Since: 03/19/05
4 lifetime posts
The thermostat is on an interior wall, sort of centered in the bottom floor. No sun ever shines on it. I haven't checked the connections yet, but per an earlier reply, now i suspect that it has to do with the humidity level. We had an April Aire humidifier retro fitted onto our gas-forced air system, and that thing has never worked sufficiently to humidify the air — I didn't even turn it on this year, and it's been extremely dry here. That may be exactly what's going on.

LarryG

01:29PM | 01/20/11
Member Since: 07/22/04
529 lifetime posts
From an article I was reading: Studies have shown
that wintertime operation at 68°F / 60% RH
provides the same level of occupant comfort
as does 72°F / 30% RH; so lower utility bills
also results with the addition of moisture to
your home. There's you 4 degrees.


simonheaters

01:07AM | 02/22/12
Member Since: 02/21/12
5 lifetime posts
Do you check if there is a draft entering your house, causing cold air to confuse you? It might sound like a stupid advice, but it would not hurt to check. Any air blowing near the thermostat could mess up its readings. You have to be alert to any breezes blowing across your house.

Simon

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BV000803

02:03PM | 04/11/13
I have the same model and it look like is a bad design. If you open the unit you will see they remove some components in the thermistor section to make the device more cheap. My unit show 6 F degree highter that the room really is. The auto program also is unusable in the hot funtion because a wrong temp setup in the inside software.

Julioballesta.com
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