Goodman GPU14M User's Manual

The Goodman GPU14M should be inspected annually by a qualified HVAC technician. Filters should be replaced every 3 months, and the unit should be cleaned and checked for leaks and efficiency issues.
Ensure the thermostat is set to the correct temperature, check that the air filter is clean, verify that the outdoor unit is free of debris, and make sure that all vents are open and unobstructed.
Turn off the unit and inspect for loose parts or debris in the fan. If noises persist, contact a professional technician to investigate further.
Turn off the thermostat, switch off the circuit breaker for the unit, wait five minutes, then turn the breaker and thermostat back on.
Use a high-efficiency pleated air filter that matches the size specified in the user manual. Ensure it has a MERV rating appropriate for your needs.
Regular maintenance, such as cleaning coils and replacing filters, sealing leaks in ductwork, and ensuring proper insulation can help improve energy efficiency.
Signs include reduced airflow, strange smells, frequent cycling, high energy bills, and inconsistent temperatures.
Disconnect power, remove the cover, and use a soft brush or vacuum to remove dirt. For deeper cleaning, use a coil cleaner spray and rinse with water.
Check the condensate drain line for blockages, ensure the unit is level, and inspect the drain pan for damage.
It is recommended to have a licensed HVAC professional install the unit to ensure it meets all safety and warranty requirements.