Heat Distribution Question

Old 10-13-02, 05:32 PM
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The furnance in my duplex is heating the upstairs but not the downstairs - i checked to make sure the vents were open. Does the furnnace have separate fans for the first and second floor?
Old 10-13-02, 08:08 PM
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Hello pamyoung11. Welcome to our Heating and Cooling forum and the Do-It-Yourself Web Site.

Not much detailed information supplied here to base any likely or positive determination upon. The basic possibilities are below.

Most likely the dampeners in the venting system may be closed and or partially closed. There may not even be dampeners in the air flow system.

If there isn't any air flow out of the registers it's always a possibility the ducting to the effected rooms could have become intentional or accidentially disconnected.

Another fact if air is coming out of the cooler rooms vents, is the fact that warm air rises quickly. Therefore, heat is coming out and rising upwards to the rooms above.

Furnace location plays a part in the factor also. Since warm air wants to rise upwards and gravity is pulling it downwards, it's more difficult to force the warm air downwards tow stories if the furnace is in an attic space or located upstairs.

The location or locations of the intake return plays yet another factor in heat distribution. If the intake is upstairs it will be more difficult to warm the lower cooler rooms.

Several other resident heating professionals replying within this forum, could have additional helpful information, suggestions, advice. Check back on your question several times for additional replies.

If you need further assistance, use the REPLY button to add any additional information or questions. Using this method also moves the topic back up to the top of the list automatically.

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