The outdoor coil is defrosting far more than it should.
The outdoor coil is defrosting far more than it should.
Each defrost reverses the cycle and often energizes aux heat; excess defrost is a large hidden heating penalty.
Check the defrost sensor / board and its termination temperature, coil cleanliness, airflow and refrigerant charge.
How Energy Agent prices a finding
Screening-level estimates; confirm with measurement and verification before capital commitment.
Electric resistance / auxiliary heat runs while it is warm enough for the compressor to carry the load.
The heat-pump compressor is starting far more often than a healthy unit should.
The unit says heating but the supply air is colder than return (or the opposite in cooling).
On a heat-pump (non-heat-recovery) VRF system, some indoor units call for heating while others call for cooling.
Send twelve months of interval data and a BAS trend export. Energy Agent returns a ranked list of what is wasting money, what each item is worth per year at your tariff, and what to do about it.
