Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner

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Just a little question, guys!

My room-mate and I have a constant argument about AC. I like to put it with the fan on AUTO mode to save money, but she keeps changing it to ON mode, arguing that AUTO will only let the outdoor air flows inside and makes the room hot on summer and cold on winter.

She even blames me for the high bills for heating/cooling from last summer. Ouchs!

I need to stop this silly arguments and have a real answer. Help me!

How it really works?

Needaclue

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The blower has absolutely nothing to do with outdoor air. Having the T-Stat set to auto lets the blower come on only when the A/C-heat comes on. With the switch in the ON position the blower simply runs all of the time. Depending on your living space (high ceilings, multi-level) having the blower on constantly while costing a small amount to run can actually save some money and make you more comfortable in the summer. However most people will leave it in auto in the winter so they don't feel as if they have a draft from the air movement as the blower is in high speed in fan on position and cool modes and low speed in heat mode. Many furnaces today are equipped with a setting that allows the blower to run constantly at a lower speed or simply run for a min. or two after the A/C=Heat have turned off.

Posted on Jan 17, 2009

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