Premium Efficiency Cooling Program

Optimal Refrigerant Charge

Studies show that 40% to 70% of air conditioners operating today have improper refrigerant charge, which reduces system performance and increases energy usage (The California Refrigerant Charge and Airflow Verification Program, 2006). Improper refrigerant charge can reduce energy efficiency of your system by up to 20% (ENERGY STAR). Optimal charge means improved efficiency, comfort, performance and system reliability. Participating contractors will optimize the refrigerant charge when installing your system, using advanced techniques and computerized diagnostics.

• If the unit's refrigerant charge is low, it could indicate a leak or improper charge on installation. Undercharged units run more and can cause your equipment to fail early.
• Overcharged units cause liquid refrigerant to enter the compressor, leading to premature compressor failure. A loud, vibrating compressor can provide the clue.
• The refrigerant charge for your system can only be tested and adjusted by a licensed, trained HVAC technician. This is not a service you can do yourself.

Participating contractors ensure that all new residential HVAC systems are finely calibrated for optimal refrigerant charge and performance. This process requires more time than a typical installation because Quality Installation involces optimizing your system's refrigerant charge, sizing the system for best performance in your climate zone and for the needs in your home, and matching system components for optimal compatibility. It the time of installation. Your contractor can give you the best estimate of the installation time required for this procedure.