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Heating & Cooling

Inconsistent temperature first vs second floor

Our home has modern heating and cooling, but... the boilder/AC/thermostat is on the second floor, we have a central return system (only supply ducts, no return ducts), and our first floor has 11' tall ceilings with all the supply vents near the ceiling.  As a result, our first floor was FREEZING all winter.  It probably ran 5-10 degrees cooler than the second floor.  Wondering what our options might to improve temperature consistency?
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Posted 2015-04-08T19:46:43+0000  by AndM AndM
Hello AndM, and welcome to the community!

Unfortunately when the supply or vents are near the ceiling, the warm air will collect near the ceiling. So the best way to move or push it down would be to install ceiling fans.

In the summer, use the ceiling fan in the counterclockwise direction. While standing directly under the ceiling fan you should feel a cool breeze. The airflow produced creates a wind-chill effect, making you "feel" cooler. In the winter, reverse the motor and operate the ceiling fan at low speed in the clockwise direction. This produces a gentle updraft, which forces warm air near the ceiling down into the occupied space. Remember to adjust your thermostat when using your ceiling fan. 

You mention you have supply ducts but no return ducts, that doesn't seem possibly. In order for there to be a vent there must be returns or maybe a single large return where the air is getting sucked into then sent out though the vents--make sure the filters on the return are kept clear and clean, changing the filter as often as necessary, depending on your conditions. 

Let me know if this help. 

Posted 2015-04-09T15:15:53+0000  by Angelo_HD_CHI
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