Previous customer two heat pump and air handler heating tune ups. Customer just head home built last year. Asked about how systems were working and filters. Northwest corner bedrooms struggle to keep up with doors closed, explained how adding crossover grills over the doorways or junction returns in the bedrooms would allow for better air circulation, and that with doors closed, the air isnâ€™t able to be moved the way the system is designed to move it. Inspected both air handlerâ€˜s, blowers, sequencers, heat strips, ductwork, attic insulation and dryer vent. Inspected heat pumps, compressors, fans, capacitors, reversing valves and defrost modes. Checked heat rise in heating and emergency heat modes. Checked refrigerant pressures. Went over cost savings between heating and emergency heating modes. Also talked about our UVC lamps for both air handlers and our shield protection plans. Both systems working well at this time!