Question about Heating & Cooling

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Rooms farture from airhandler are 3 to 4 degrees warmer and rooms close to airhanler are 2 or 3 degrees cooler blower motor set on highest speed unit runs too long 18 min on 10 min off 100 degree outside temp tstat set at 75 degrees

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Here are a few things to try in order:

1. If you have access to the ductwork and there are internal dampers on the branch ducts going to the individual registers, make sure the far ones are fully open and slightly close down the ones that are close to the air handler. You may have to experiment a bit to get an airflow you're happy with.

2. If you don't have damper adjustments, try to restrict the airflow at the individual registers near to the air handler to reduce air flow to these and force more air to the far ones. Some registers have an adjustment for this; if not you'll have to make something like a cardboard insert to block part of the air flow. The downside is tha that the restricted registers might get a bit loud.

3, A last ditch option is to install booster fan(s) for the more remote ducts. These can be internal or external like this: http://www.smarthome.com/3010/Heating-Air-Conditioning-Booster-Fan/p.aspx

A few other things that might help marginally include adding insulation and/or moving your thermostat.

Hope this helps. FYI, usually when you have an issue with a system out of balance like this it indicates either a badly designed/installed system or a case where a building was added on to and the original a/c was extended to cover the new area.

Hope you cool off soon.

Posted on Jul 26, 2009

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