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Heating the house causes breathing issues

Our home is 2 story 2400 square feet unit built in 2003 (DR Horton) here in Houston. When the heat kicks on the home gets immedately stuffy as if the heat is not balancing throughout the home. My wife and son immedately begin having breathing issues forcing us to kick the heat down and/or off. We have the ceiling fans pushing up in an effort to enhance circulation but we still appear to be having breathing issues.
Last winter we had similar issues and had a major HVAC group come out to inspect the home. They could not locate what the issue could be and said everything appeared to be OK.

What are we missing here ?

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  • dvincent Jan 26, 2009

    My wife indicates she closes most of the exhaust vents upstairs 80 percent and opens the exhaust vents downstairs 100 percent during the winter. The house is a fairly new home so I am assuming it has a fairly modern system in the house. Wether it has a zone system I do not know.

  • Dale Koehn
    Dale Koehn May 11, 2010

    is every room in the house this way ? or just a few ? is there a zone system installed ? do you have fresh air intake on the system ?

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With the limited information, it is hard tp properly diagnose... DR Horton typically installs one unit on a two story and has it control all zones which is not the most effective means of HVAC. Homes are typically calculated, designed and "balanced" with the household doors open in order to get an even, balanced temperature to withing 2 degrees F. Heat rises and cold air falls - in open floor plans with the upstairs thermostat on the 2nd floor exposed to the downstairs heat rising upwards, this can cause an unbalance. If more definitive info can be provided, more specific info can help narrow down the issue.

Posted on Jan 03, 2013

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If your ducts come off the end of your supply plenum and not the middle this could cause a problem in that the air doesn't have time and a place to mix before it leaves the plenum to the ducts. should be at least 12" from ducts to the end of plenum. i find this problem alot.

Posted on Jan 26, 2009

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