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Coils freeze up inside the house central air unit

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Hi thanks for the question i would check the air filter very important very important most common problem also check the drain from te evaporator it could be clogged thanks the appliance doc

Posted on Sep 27, 2008

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Why would unit be leaking water on the inside unit


If it is leaking on the inside (coil) it usually is a sign the condensate drain is plugged causing overflow, or the coil is freezing up inside and when its off it thaws the ice and melts down the center of the coil and onto the floor,

Jul 21, 2014 | Ruud Central System Air Conditioner

1 Answer

Ac unit in the house keeps freezing up, not a window unit, central unit. The entire part inside keep freezing up, making knocking noise, and not blowing cool air. The out side part is fine, no problems...


There is a coil out side in the unit , it needs cleaning, there is an acid that is used to clean it. Its an easy job, pull the top open and use a stick or something to keep it up so you can spray the coil, with the unit off let soak 10 mins then spray wash with water hose. done

Sep 29, 2013 | Heating & Cooling

3 Answers

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

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

2 Answers

Central air blowing warm air


2 things could be happening. 1, inside unit needs filter changed and coil cleaned. 2, unit is low on freon. A/C tech should be able to check for both. You can check the a/c coil to clean it yourself but to check for low freon this will have to be done by a a/c tech due to the complexity of the system. the ice is caused by a series of things however, check the a/c filter and the coil located behind the filter. this coil should be free of any debris. if you have indoor pets sometimes the hair clogs the coil causing the freeze up.. To clean the coil you need to get a small weed killing sprayer.. At the a/c supply house you can purchase cleaning solution that is easy to use an safe for the enviroment also leaves your house smelling great. if the coil inside has been cleaned check to see if the coil outside is clean if not you can clean it with a water hose by spraying the coils out. MAKE SURE TO KILL THE POWER beforehand. Also spry the water onto the coils only and spray in the oppisite direction of air flow. Have system checked by a/c tech if you do not feel comfortable doing any of these suggestions

Jul 16, 2009 | Goodman CKL36AR36 Air Conditioner

1 Answer

TRANE 1984 Home A/C Where are How to Clean Coils inside House


the best thing to do it with airhandler shut down at breaker. 1st soften dirt and crud with 409 or different brand. 2nd take a wire brush and clean in up and down motion following the fins on coil.3rd rinse with spray bottle . this is the best you can do without coil removal.

Jul 02, 2009 | Heating & Cooling

1 Answer

Central air unit two part system, inside and outside. Freezes


If coils are clean and blower is working properly,
then you're probably low on freon.

Jun 09, 2009 | Goodman GMS90703BXA Heater

1 Answer

Lines freeze in central air unit


If you are not certified to do H V A C then I highly recommend that you call in the pro's. However there is something you as a homeowner can do. Start by checking the air filter. if it is too dirty it will slow the air flow across the coils and cause the coils ti ice. The line freezing is a sign that your coils are beginning to ice or already have. This is also true if the coils are dirty. You can check this by removing the air filter and using a flashlight to look up inside of the air handler. If they are dirty then you can clean them with a solution of water, mild dish detergent and a soft bristle brush. Be sure to rinse them thuroly. If this does not fix the freezing problem then you may very well have a small leak and need to have some refrigerant added. hope this helps. Good luck.

May 11, 2009 | Heating & Cooling

1 Answer

My central air unit keeps freezing up on the inside


1) locate the A-Coil (A-frame) inside the furnace. It is usually located in the furnace supply plenum located on the "down" side of the furnace plenum. If it is very dirty, there will be poor air flow generally in the house. This can cause the A/C to "freeze up" as the refrigerant is not getting enough heat to convert the refrigerant to a gaseous state.

2) The unit may be low on freon (or whatever refrigerant you are using). Contact a serviceman to check the unit.

Jul 07, 2008 | Coleman Heating & Cooling

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