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Central air freezing up

Why is my central air freezing up at the pipe

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Low freon causes this problem. It could be the compressor going bad, but 99% of the time it is that the freon is low, have it leak tested and also have freon added

Posted on May 23, 2009

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SOURCE: My central air AC unit

You are absolutely right! The copper pipes should have insulation them. When they don't and they get cold in hot weather, they sweat and then freeze. Tubular Foam Insulation is what you need. Most home centers carry it. Once you cut and install it, be sure to wrap it in a good quality Duct Tape.

Hope this helped you. Good luck.

Posted on Jul 15, 2011

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Why does my home A/C unit result in a constant stream of water coming out of the overflow drain? I've had the same unit for 5 years, and it seems that it drains water in ever-increasing amounts. Als


Sounds like it is freezing up. Kind of hard to say since you did not say whether it is a central heat and air system. My overflow was constantly draining onto my patio from overflow. I crawled up in the attic and followed the pvc pipe where it came in from the outside and closer to the central unit in the attic I drilled a hole in the 90 degree elbow of the pvc and unclogged the pipe which was frozen from running so long. Then I covered the hole with silicone. no more leak coming from overflow

Dec 27, 2014 | Heating & Cooling

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Why does my central air keep freezing up?


An air conditioner freezing up is either low airflow or low on refrigerant. If the filter is clean, then check the refrigerant level, blower running at proper speed, make sure indoor coil is not dirty or restricted. Make sure that the duct outlets are all open and some have not been closed.

Sep 01, 2014 | Heating & Cooling

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My A/C blowing air, but it is not cool. It has started freezing up. We just replaced the air filters and since then it is freezing up. We even gently cleaned the a/c coils before replacing the filters. ...


Hello, sounds like it is either a low charge or lack of airflow, what type of filter are you using? sometimes those filters that claim to be super effecient will actually cut down on your airflow and cause the ac to freeze up.

Jul 15, 2011 | Intertherm Heating & Cooling

1 Answer

My central air AC unit (Double wide home) always works for generally up to two hours, then it freezes up, by the copper pipes ice over, shutting them off and letting them thaw out, works to get it going...


You are absolutely right! The copper pipes should have insulation them. When they don't and they get cold in hot weather, they sweat and then freeze. Tubular Foam Insulation is what you need. Most home centers carry it. Once you cut and install it, be sure to wrap it in a good quality Duct Tape.

Hope this helped you. Good luck.

Jul 15, 2011 | Coleman Heating & Cooling

1 Answer

Water pipes frozen central heating still going am afraid when thaw comes that pipes will burst


Look it is not when thawing that they burst, if they were going to burst they would have done that already. The pipes burst when they freeze and the water expands, it just so happens you do not find that until you defrost the pipes and the water can flow. You really need to visually inspect all of your piping while it is defrosting and then isolate the leak for repair. If they were going to break they already did. Good luck and I am praying for you!!

Dec 26, 2010 | Desa International CBN30T Central Heating...

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Frigidaire central unit freezing up leaking


The coil freezing can be caused by a couple of things. 1) Not enough air flow over the coil or 2) A low refrigerant charge. First make sure that the indoor fan is running. Then check your air filters and make sure your evaporator coil is clean. After that you can get the refrigerant charge checked. The lower the refrigerant pressure is, the lower it's boiling point is and when it gets below 32F then the evaporator coil and usually the low pressure line freeze up. The leaking you were talking about is probably from the ice melting. Hope this helps.

Jun 06, 2010 | Frigidaire Heating & Cooling

1 Answer

My small tank in the loft off the central heating is boiling over?


you have back syphening coming from your open vent pipe,the pipework needs looking at,could be that the open vent pipe is in the wrong place

Nov 21, 2009 | Ruud Central System Air Conditioner

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Central AC leakage


Sounds like the drain pipe isn't large enough or not set at enough down angle to handle the water on high humidity days,check it out

Aug 22, 2009 | Heating & Cooling

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RE: Carrier Unit Central


Try first cutting system power for a couple of minutes, even from main. With some luck it can be enough to reset the system, as it looks like a problem with the control board. The control board has also a coin battery and a reset bridge on it , but to access them you need to take apart control unit. Try fist turning off main power switch for 5 minutes or so.

Jul 26, 2008 | Heating & Cooling

1 Answer

Rudd model ubhk-24jinfg


Check your filters inside the furnace, replace if needed. Then check to ensure that the fan is running inside the furnace. If these two things dont fix the problems, I would imagine you have low refrigerant issues. In that case you should call a service company.

Hope this helps ya please rate me.

Jun 20, 2008 | Ruud Central System Air Conditioner

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