Heating Works Downstairs, Not Upstairs. - HVAC - DIY Chatroom Home Improvement Forum

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Old 11-27-2013, 12:01 AM   #1
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Heating works downstairs, not upstairs.


Here is my situation: I have a Ruud gas furnace in the attic and a 2 zone house (upstairs/downstairs). I have two honeywell thermostats. The downstairs heat works fine. If I turn the set temperature up, warm air starts to blow out of the vents. Upstairs is a different story. When I turn the heat up, it sounds like the furnace turns on (for about 5-10 seconds), and air begins to blow out of the vent. The air, however, never gets hot. It stays pretty cool, and because of this the temperature slowly drops throughout the night. I have swapped the thermostats and still experience the same problem.

Any ideas?


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Old 11-27-2013, 05:53 AM   #2
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Heating works downstairs, not upstairs.

Problem is probably in/at the zone panel the stats are connected to.


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furnace , gas , heat

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