PORTLAND PRESS HERALD • November 15, 2025
Maine experts say doing these things will maximize your heat pump’s efficiency.
Keep it clear. Brush snow and ice away after storms or when drifts build up. Outdoor units need about 18 inches of clearance on all side for good airflow.
Check drainage. Condensation lines should be kept clear so winter meltwater and summer condensation can drain away.
Keep your system maintained. Regularly clean or replace air filters. Schedule a professional tuneup once a year to check refrigerant levels and coils.
Use your heat source backups strategically. Homeowners with older oil or propane systems should only use them as backups during extreme cold events to maximize heat pump efficiency.
“Set it and forget it.” Heat pumps work best when the thermostat is set at a steady and comfortable temperature rather than turning the unit down or shutting it off at night and back up in the morning.