Some tips for adding Freon to a home air-conditioning include obtaining the right type of Freon, wearing protective gear, identifying the point of Freon leak and repairing it, adding small amounts of the refrigerant at a time, and keeping the Freon container in an upright position when adding the gas. Don't try to add Freon unless you are licensed and can procure the refrigerant legally; otherwise hire a qualified heating, venting and air conditioning technician.
Since Freon is a hazardous component controlled by the Environmental Protection Agency, having a license to procure and use it is essential. If hiring an HVAC technician, ensure that the concerned company is licensed. Check with the Better Business Bureau to know the company's reputation.
To know which type of Freon to obtain, check the label on the air conditioner. Buy a Freon repair kit to repair any leakage in the unit.
Begin the task by switching off the unit, and weara face mask, goggles with shields on the sides and gloves. To detect a leak, connect a pressure gauge to the unit's lines. If the reading is low, identify leaks at the joints and along the lines visually. To make the necessary repairs, switch on the unit, use the injection hose, and follow the instructions given with the repair kit to seal the leak.
When adding Freon, connect the pressure and temperature gauges appropriately to the unit and the Freon container. Allow a gap of 10 minutes between each Freon addition, and note the gauge readings to monitor the quantity added.
To test if sufficient Freon is added, switch on the unit for 15 to 20 minutes. If the cooling is not adequate, it indicates that more Freon is required or the leak is not properly repaired. In such a case, contact an HVAC technician.