Service call for weak airflow. Found the indoor blower motor capacitor failed and the motor over-amping. Replaced the run capacitor and cleaned the blower wheel, which was impacted with dust. Airflow has significantly improved.
Performed whole-home duct sanitation using a Rotobrush system. Removed heavy dust buildup from the return and supply drops. Fogged the duct system with an antimicrobial solution to eliminate odors and bacteria. Cleaned all register grilles and resealed the supply plenum.
Diagnosed a loud buzzing noise coming from the outdoor unit. Found the compressor contactor pitted and welding shut. Replaced the single-pole contactor with a heavy-duty replacement. Checked the compressor windings for resistance and found them healthy.
Finalized the installation of a new 3-ton Lennox Merit Series air conditioner. Removed the old R-22 system and flushed the copper lineset. Installed a new hurricane-rated condenser pad and a new fused disconnect box. Braised all connections with nitrogen flow. System started up with perfect superheat readings.
Arrived for emergency heating service. Found the system blowing cold air. Troubleshooting revealed a burnt-out sequencer on the electric heat kit. Replaced the sequencer and inspected the heater wire elements for breaks. Heat is fully restored.
Completed the installation of a new Mitsubishi ductless mini-split head in the master bedroom addition. Mounted the indoor unit, ran lineset to the outdoor condenser, and pressure tested with nitrogen to 500 PSI. Evacuated the system to 500 microns. Tested heating and cooling modes; unit is whisper quiet.
Performed bi-annual maintenance on a Trane XR14 heat pump. Chemically cleaned the outdoor condenser coils to remove salt and debris buildup common in the riverside area. Checked refrigerant pressures and subcooling. Tightened all electrical connections and tested the defrost board.
Responded to a no-cool call on a Carrier Infinity system. Diagnosed a failed dual run capacitor and a clogged condensate drain line. Replaced the capacitor with a US-made Turbo 200 and cleared the drain line using nitrogen. Verified proper amperage draw on the compressor and fan motor. System is now cooling efficiently at 54 degrees supply temperature.