Noonan Heating & Cooling | HVAC Services in Gardena, CA 90248

Signs of an improperly sized system include rooms that are too hot or cold, short-cycling (frequent on/off cycles), unusually high energy bills, and excessive humidity. An oversized unit cools too quickly without properly dehumidifying, while an undersized one runs constantly. Our technicians perform a detailed Manual J load calculation, specific to Gardena's climate and your home's layout, to determine the perfect system size for efficiency and comfort.

If you notice reduced cooling, ice on the refrigerant lines or evaporator coil, or a hissing sound, you may have a leak. First, turn off the system to prevent compressor damage. Then, call us immediately. We use electronic leak detectors and UV dye to pinpoint even small leaks in your AC system. As EPA-certified professionals, we safely repair the leak, perform a vacuum test, and recharge the system with the correct refrigerant to restore its cooling capacity and protect your investment.

Gardena's climate demands reliable heating and cooling. Regular maintenance prevents the two most common local issues: inefficiency from undetected wear that mimics sizing problems, and minor leaks from vibration or corrosion that turn into major repairs. Our maintenance checks include inspecting refrigerant levels, testing for leaks, cleaning coils, and verifying system operation. This proactive care improves efficiency, extends system life, and helps avoid emergency breakdowns during our hottest or coolest seasons.