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Central air conditoner unit doesnt blow cool air into home has some ice on the inlet heat and cooling lines going into the central air unit

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Change the furnace filter. Make sure you use a cheap one when air conditioning, as the better ones restrict airflow when they filter out so much stuff and then plug up, not allowing enough air to pass over the cooling coil in the furnace's air plenum. Turn the A/C off for a few hours (with only the furnace fan on if possible) to melt the ice off the cooling unit inside the furnace.

Posted on Sep 01, 2008

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1 Answer

My coleman central electric furnace only blows cool air


The AC unit outdoors must be running and rejecting heat by its air flowing through it the 2 copper lines are the refrigerant lines, the fatter one should be "beer can cold" if not its low on refrigerant or not running.

Jan 01, 2013 | Coleman Home Electric Furnace Eb15b/Eb15d

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My central air unit comes on but it's not cool and


to me it sounds like filter are dirty, need to be cleaned or replaced, home systems, packaged or otherwise are hermetically sealed and should not need freon recharge. Always start with airflow and/or unit being set too low. An AC unit of any type will build ice if a) the filter is plugged up and can't move enough air, b) it has been run without the filter, clogging the coil, again, not moving enough air, c) setting an AC unit below 68 degrees F will almost ALWAYS cause icing, and d) running a standard AC when it's warm inside and cold outside (unless equipped for "low-ambient operation"). When in doubt, a bit of maintenance(thorough cleaning) by someone with AC skills can cure a b, common sense will cure c d.

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Jun 23, 2011 | Goodman CKL42AR42 Air Conditioner

1 Answer

Why would cool air be blowing out of my central ac unit condensor that sits outside? The other unit I have next to it blows out warm air and responds well to thermostat changes. The unit blowing cool air...


It probably has a low refrigerant charge. The air coming out of the outside unit should be warmer than the outdoor temperature when in the cooling mode and if it's a heat pump it should be colder than the outdoor temperature in the the heating mode. Check the big line going to the unit, it should be somewhere around the 40 F range and the small line should be hot.

May 23, 2010 | Goodman CKL24AR24 Air Conditioner

1 Answer

I have a coleman central air switched over from heat to cool and it blows the E- fuse on the pc board .never had this happen before


check the stat wires for damage at unit the orange wire controls the reversing valve for heat cool on heat pump if wires look ok then un hook tue orange wire if doesnt blow fuse then the reversing valve coil is bad hope this helps

Jun 04, 2009 | Heating & Cooling

2 Answers

Central heat/air unit for home blows cold air


could just be heat trapped in ductwork for attic temp or from not running for more than a few hours.

Jan 13, 2009 | Haier HC48C1VAR Central Air Conditioner

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My air conditioning unit is not blowing as cold as it did, nor is it blowing as hot as it did in the heating mode


90 percent of the time the freon charge is low and lack of freon lessens the amount of compressed heat that can be created and also the amount of heat that can be extracted. hence less cooling and less heating. however the exact same thing can occur when a change over valve gets stuck partially between heat and cool . it then mixes the hot and cold together and you get poor cooling and poor heating. you check it with a gage. fed law requires that you have an epa certification to apply a gage. low pressures in heat and cool on both high and low pressure gages are a sign of low charge. if low pressure and high pressure are close to the same on both gages then a good chance valve is stuck half way between. you can also sometimes check by feel . at the change over valve two lines should be virtually to hot to touch and two should be cold to the touch. one is heating flow and other is cooling flow. if the valve is stuck then temps will be within a few degrees of the same on all. low charge and the hot lines won't be hot hardly .and the cold line s barely cool. look for white frost forming in the heat mode outside at the condensor tubing shortly after you turn on the heat. thats a sign of low charge. good luck.

Nov 04, 2008 | Heating & Cooling

1 Answer

Getting cooler air


if you are desiring to have it 62 degrees in the house, the cool setting needs to be more to like 66 deg and the heat setting needs to be like 58 degrees. that would make it more around 62 degrees in the house.

change the heat setting first to 58 and then change the cool setting to 66. this gives your temperature 62 +/- 4 deg.

Jun 16, 2008 | Computers & Internet

2 Answers

Air conditoner


Sounds like your compressor is locked up or is running under a sevre load you would be best to call a professional

Jun 11, 2008 | Whirlwind FH-778 Air Conditioner

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