Charging Central Air Conditioner

Technicians charge an ac compressor at the outside unit.

Charging central air conditioner.

Air conditioner freon refill cost can run 80 140 per lb and about 200 500 for a whole unit to be recharged. Your central air conditioner works by performing a complex form of heat transfer with the assistance of a chemical refrigerant. When your refrigerant level runs low the heat transfer does not take place and the unit while remaining functional and blowing air will not provide cold air. To recharge the refrigerant in your air conditioner first shut down your ac unit then follow the steps below.

The low pressure hose is normally blue and is connected to the suction line the larger of the two pipes. The ac compressor circulates the refrigerant through the system s pipes metering devices and coils. Ac systems with a low r 22 charge do not perform at peak efficiency. Target subcooling may be between 10 15 degrees f depending on the manufacturer specs.

Recharging a central air refrigerant involves hooking up the gauges and taking accurate temperature reads but it also requires an epa certification. Royalton 4ac13l commercial residential 3 ton 13 seer central air conditioner. Charging split ac system this system is less expensive than a central air conditioner and has an advantage over a window unit as it heats as well as cools. Hvac service technician reading the back of a condenser panel to get the target subcooling charge on a carrier air conditioner 410a charging and r22 charging tips make sure you get air out of your refrigerant gauge hoses before charging a air conditioning unit.

The split ac system uses r410a unless it is an older unit. Central air conditioners are designed to continually cool the home to the desired temperature of the homeowner. The coolants they use are. Most homes with an air conditioning system manufactured before january 1 2010 use r 22 as the refrigerant.