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Goodman 3 1/2 ton unit

I had a new unit installed (indoor an outdoor) and the house just wont cool off.the guy who installed it tried several times to fix the problem but had no success.he has narrowed it down to two things,1 he is not sure what size orifice should be in the unit. and 2 he thinks the fluid levels could be off.i am just trying to get some help before i call someone else
air handler
ser.no.0710246971
model no.capf3642d6ba

cond. unit
model no.gsc130421ac
ser.no.0802183183

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I work for a very large reputable goodman dealer. Your equipment appears to be a correct match. The correct orfice should have been taped to the outside of the outdoor unit in a baggie right beside where the pipes connect. Things will run alot smoother though if you scrap the orfice and have a TXV installed (thermal expansion valve) . This is a mechanical device that adjusts the flow of freon into the indoor coil based on the immediate needs of the coil. After that, balancing the refrigerant is a piece of cake as all we need is about 10 degrees of subcooling to make sure we have plenty of liquid to the TXV.

Posted on Jun 12, 2008

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Shastalaker7
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Jan 04, 2011 | Goodman Heating & Cooling

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Not cooling as it should


If you have a crushed, kinked, or otherwise restricted fitting in the system, it's possible the cooling may be affected. Pressure readings can be thrown off, and refrigerant flow can be inhibited.

Since the unit is new, you should have a complete parts and labor warranty, so ask the installer what the reason is that the system doesn't provide the cooling you were probably promised when they sold it to you. They should have taken into account the location of the condensing unit, the size and insulation in your house, indoor and outdoor conditions, your geography/climate, and any other load factors before selling you the system.

Jul 22, 2010 | Goodman CLQ36AR49 Air Conditioner

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Air condition jsut 10 month old ... not keeping up whith cooling


If it's only 92° outside and the unit won't cool the house, then the unit is either to small or it's low on refrigerant. They are designed to cool a house with outdoor temperatures up to 115° to 120°.Usually you need one ton a/c for every 400 square feet of house, but, you have to take into account for average outdoor temperature and humidity, windows, doors, especially sliding glass or patio doors and which side of the house they are on, insulation in walls and attic.
The air leaving your duct work going into the rooms should be about 20° lower than the room temperature, if you have a 80° room then the air leaving the duct should be around 60°. if it is then the unit is probably to small if, everything is working properly.

Jun 07, 2010 | Goodman CLQ36AR49 Air Conditioner

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first off you should have a four ton unit. what is your super heat? is it pulling attic or outside air?

May 27, 2010 | Goodman CLQ36AR49 Air Conditioner

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I hate to use rules of thumb but 500sqft per ton depending on your windows and insulation. you are probably ok with a 2.5 ton however it will not work with a 3 ton outdoor unit as you have figured out. depending on how long that ac has been in you may want to replace it with a 2.5 ton due to the damage to the compressor valves because of the mis match. or if the indoor is newer and the original system may have been a 3 ton then i would replace the A/H. and be prepared to replace the outdoor if the valves are to far gone. If the trane is a new high effiency 2 and the goodman is just a 10 SEER you may be able to have a txv installed on the trane unit and a kickstart device outside. but only if its a high effiency but their again if the A/C fails you couldnt have a high effiency 3 ton you would have to drop down to 2.5,

Sep 22, 2009 | Heating & Cooling

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