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Heating, Air Conditioning, Fridge, HVAC/Goodman gmp or gmpe only heating half the hosue


Hi, we moved into this house last summer and have noticed that the basement doesn't seem to get as warm or cold as the rest of the house.  I started to investigate it further and noticed that it appears that only one vent in the basement is getting hot air.

It seems that everything to the left of the air filter from the furnace is not getting hot air.  I have felt the vents and the tubing.  I have looked for a lever of some kind that would be preventing the air from reaching it, but haven't been able to find anything.

We had the ignitor go out earlier this winter and had someone come out and fix that, he replaced the air filter at that time.  (It was early in the am and i completely forgot to ask about the basement at that time.)

I would be happy to attach a photo if that would help.



You need to somehow determine if vents are connected.  You can do this by setting the unit to off and turning the fan to on.  With only the fan running, start turning off other vents in the home to see if air starts to come out.  You can tape a small piece of tissue to the vent to see if there is any air movement.  If no air ever comes out, then it is blocked off.  I would look for a damper.  If air does start to come out, then the system needs to be balanced so the correct amount of air comes out of each vent.


Heating, Air Conditioning, Fridge, HVAC

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Craig HVAC Expert


I have been in the HVAC field for the past 18 years. I can help with most HVAC questions. I work on commerical buildings for the most part, and have yet to find anything I could not troubleshoot and repair, when repairable. I work on small 1 ton units to a 2500 ton chiller. Troubleshoot air flow, elect, and control problems. I attend regular classes to keep up with the latest and greatest.


I work on commerical sites, hospitals, gov't buildings. I can troubleshoot just about anything in the HVAC business.

5 years trade school, VFD training classes, Liebert factory training, some York and Trane factory training.

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