Problem: My air conditioner is freezing up. I am seeing frost and ice on the suction line (black insulated line) Any areas that are not insulated are covered with ice. My air conditioner is freezing up. You see frost or ice on the suction line (black insulated line) Any areas that are not insulated are covered with ice. You are not getting hardly any air flow out of your registers. Your evaporator coil is iced up completely.
Solution: Turn your air conditioner off and let the ice thaw out by running the fan (fan set to ON) on your thermostat. Thawing sometimes takes 2 to 3 hours. Most of the time air conditioner freeze ups are caused by the system being low on refrigerant charge. Look for these causes for why the air conditioner is freezing up. Some thing that cause air conditioners to freeze up are:
1. Dirty air filter or some air flow restriction.
2. Dirty blower
3. Slow or dragging blower motor (might need a new capacitor). Please click here if you would like to see the capacitors we sell.
4. Dirty stopped up Evaporator coil (Need to have HVAC tech or you need to inspect and possibly clean evaporator coil)
5. Long Air conditioning run times. Setting thermostat below 72 degrees with cool outside conditions.
6. A stuck contactor that keeps the outdoor unit running even when the indoor blower is not running or when the thermostat is calling for cooling. Please click here if you would liked to see the air conditioner and heat pump contactors that we sell. Please click on this link if you are interested in viewing a YouTube video on how to change a contactor out: YouTube Video on how to change out a contactor.
7. Duct work that is too small or restricted. Make sure that the supply registers and returns are not restricted. In other words make sure all supply registers and dampers are open. Make sure all return grills and registers are not restricted with furniture or obstructions.
Most of the time a freeze up condition is caused by a low refrigerant charge. Since the air conditioning system is supposed to be a leak free, a sealed system this means you have a leak somewhere. I use the Schrader valve caps to make sure that I do not have a leak in the Schrader valves when I take the manifold gauges off. I install these Schrader caps for insurance, because I have seen leaks in these valves many times. These caps have a rubber seal inside of them and insure a leak proof seal. Please click here if you would like to see the Schrader valve caps that we sell. Please click here if you would like to see the EZ Seal leak sealer we sell. This sealer will circulate throughout your air conditioner or heat pump system and seal small leaks. Below we have a YouTube video that a company called HVAC Maintenance made that shows how to find leaks and install the EZ Seal Sealer. I hope this will help you solve your air conditioner leak problem.
Below we have a YouTube video below made by David Jones that shows how to install the EZ Seal Sealer. I hope this will help you solve your air conditioner leak problem. We sell the EZ Seal Kit and Sealer on the following page: Please click here if you would like to see the EZ Seal leak sealer we sell. Thanks so much HVAC Maintenance for taking the time to make this informative video!