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.