I have a Goodman home A/C unit and the copper line coming into the house freezes up. The unit continues to run with no cold air. I was told it is either dirty or low on Freon. Are they correct? If it is low on Freon is this something that I can do myself. Thanks.

either the inside coil is dirty or system is overcharged.

Hello, the suction line will freeze either due to low airflow such as dirty air filter, blower wheel, evaporator coil or a weak blower motor. Also, a low refrigerant charge can cause the suction line to freeze up.

First check the filter to see if it is not completely clogged and make sure the
coil fins behind it are not frozen solid. If it is then shut off system or switch it over to
Heat to defrost the coils if you have a heat pump, then replace the filter.
Then check the outdoor unit to see if the large copper line coming to it is cold
(this means the compressor is running and not just the fan)
Also Make sure the thermostat is in "AUTO" and "COOL"
The last thing to check is to make sure the duct work to the return has not separated or
has not been torn open by animals (cats love to do this under mobile homes).
Sounds like a ductwork problem or plugged filter from what you describe. Hope this helps.

You need to check that tour filters are new. Then check that air is coming from the vents and is at least 15 degrees cooler than room temp. If no air coil is frozen, or blower motor and run cap are not working. If frozen than turn system to off and fan switch is on until you feel air through vents.
You'll need to make sure the outside unit is runing and the larger copper line is cold like a can soda. If it's cold but is freezing up, it needs to have a charge added. If its running but not cold and the fan is not running or the compressor isn't running it could have a blown capacitor. If its not running at all check. the circuit breakers and reset them. And a good idea to keep the outside unit washed with water,and that it is clear of weeds and stuff.

The refrigerant line is actually supposed to condensate, but if you mean "freeze up", thats a problem. The condensation occurs because the line temp is lower than the outside temp, kinda like a soda can outside. From what you described, Im pretty sure you are either over or under charged on refrigerant. The reason it will not come back on for a couple of hours is because the compressor is in "protection" mode and has to cool down before coming back on. When you are low or high on refrigerant, the compressor has to work harder which over heats and trips the internal overload switch. Have the unit charged properly and you shouldn't have a problem.

If the indoor coil is icing up, you are either low on freon, or the indoor coil is very dirty. This will cause it to ice even though you have replaced the filter. See if the suction line/large copper line has ice on it on the outdoor unit. If so, its low on charge or the indoor coil has plugged up and not getting enough air flow across it. Please keep me posted.
Shastalaker7

The gurgling sound is the liquid refrigerant going through the refrigeration copper lines , it's normal. And the water in the tray is condensation and is cold because is from the circulating air that gets cold going through the air handler(inside unit) You only has to keep the drain clean ,by pouring 1/2 cup of clorox every 3 or 4 months.

if the the outdoor unit is running and the larger of the two copper lines going into the unit from the house is not cold you are probably low on freon. if the line is iced up then you need to shut if off for 8 hrs and try again, make sure the filter is clean recheck the large copper tube again if its not cold your probably low on freon. if its not running at all outside check your breakers. there are a number of diffrent things that may be wrong and you probaly need a service company to look at it.

Mac

This sounds like you are low of refrigerant. Or you evaporator needs cleaning. Have it check out to see if you have a leak in the system

The contactor on the outside unit is sticking and must be replaced. The inside unit cycles off and the outside continues to run causing the refrigerant lines to freeze up.