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Chemical type smell blows into house through register vents when Goodman GSH 140481 electric heat pump operates. Also loud knocking and shaking in outside unit which also shakes air ducts/vents in ceiling.

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  • skifferz Mar 10, 2009

    I change the filters every 30 days, but problem persists.


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Change your filter.

Posted on Mar 10, 2009

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It gives off a moldy smell and the vents look dirty. Is there anything i can use to clean it and make smell go away?

Hvac/refrigeration/ appliance parts houses have chemical coil cleaner
its a mild acid, goes on liquid and expands to foam pushing out debris
and stripping the coil shiney new! remove and hose out for the best results
as both coils and pan bottom must be cleaned.

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Unit is blowing out mist.

If it is cooling properly, and the mist does not have a chemical odor, and the area to be cooled is hot and humid, this can be expected as it is due to high humidity, and a cold coil on the unit, (kind of the same thing that couses clouds in the sky)...if it has a chemical smell sounds like a refrigerant leak. hope this helps


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I have a 5 ton goodmsn heat pump it only blows cold air the heat doesnt come on have a new heat strip in it but still blows cod air

Heat pumps require a reversing valve for heat operation on the outdoor section, a control signal to a "O" terminal or orange wire is required for heating and cooling depending on the thermostat and out door unit requirements. The thermostat also has to be heat pump type for the system to operate heat for electric system with heat strip, two stage electric heating.

Jan 31, 2011 | Goodman CKL60AR60 Air Conditioner

1 Answer

We just started getting a chemical odor when our heat pump comes on,I was worried that it could be harmful so I called the fire dept. They came out and said since there was no gas to the house they...

You may have a small refrigerant leak in the exchanger coil in the furnace.

You might want to have a heating/cooling tech check the charge on your unit to see if it has leaked. Then a dye test can confirm if there is a leak somwhere.

I would wait until spring so you can take the unit offline without being too uncomfortable.

Feb 20, 2010 | Goodman CLQ36AR49 Air Conditioner

2 Answers

AC unit outside blowing out cold air, vents

Sounds like compressor not running. may be a bad capacitor, could also be low on freon.

Aug 30, 2009 | Goodman CLJ30AR32 Air Conditioner

1 Answer

Fan is still running in house constantly

Check your wall thermostat to make sure the "fan" switch is in the "auto" position. If it is set at the "on" position, the indoor fan WILL run continuously. Not really enough info as to what type of split system you have. Gas? Electric? Heat pump? Oil? Wood? Newspapers? See what I mean? Is it variable speed? Do you have a "special" thermostat for certain operations? Does your system incorperate inverter technology?

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1 Answer

Gas emergency heat pump comes on with chemical odor

If the emergency heat doesn't come on very often, it will burn off debris that has collected on the heat exchanger causing the smell. Also, check that there aren't any chemicals that are being stored around the unit that would put out fumes that can be drawn into the system and when heated, cause the odor.

Mar 31, 2009 | Carrier 52CQ-312-4 Comfort Series Heat...

1 Answer

Chemical odor coming from ventilation system

I do belive I would some research to see if I could find out if there was dirt haul in from a chemical plant or close to one where run off surface water.If you can't find anything out you may try find what type order it is.Do you think it smells like freon?

Mar 18, 2009 | Air Conditioners

3 Answers

3 ton goodman heat pump package unit, odor coming from vents

I ran upon this a few years agoafter 20+ years in the industry it is actually called "DIRTY SOCK". In the winter the drain pan and trap dry out and all the junk left behind when the summer rolls around mix with the condensateand cause the odor. "Home owner fix" pour a cup of bleach down the drain and in the pan let sit for about an hour then pour a gallon of hot water, that usually takes care of it.

Nov 19, 2008 | Goodman CLQ36AR49 Air Conditioner

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