Heat Pump Maintenance – Tips to Keep Your System Running Efficiently

1. Change or Clean Your Air Filters Regularly

Dirty air filters restrict airflow, forcing your heat pump to work harder and consume more energy. To maintain efficiency:

• Check your filters monthly and replace them at least every 1-3 months.
• If you have pets or allergies, consider higher-quality filters for better indoor air quality.

2. Keep the Outdoor Unit Clear of Debris

Since heat pumps draw air from the outdoors, leaves, dirt, and snow can build up around the outdoor condenser unit, reducing efficiency. To prevent this:

• Keep at least 2 feet of clearance around the unit.
• Remove leaves, dirt, and debris regularly.
• In winter, keep snow and ice from accumulating on top of the unit.

3. Schedule Annual Professional Maintenance

Regular professional maintenance ensures your heat pump runs efficiently year-round. A trained technician will:

• Check refrigerant levels.
• Inspect and clean the coils.
• Lubricate moving parts.
• Test electrical components and thermostat settings.
• Ensure proper airflow and ductwork efficiency.

Best practice: Schedule a tune-up twice a year—once in spring before the cooling season and once in fall before the heating season.

4. Keep the Coils Clean

Your heat pump’s evaporator and condenser coils help transfer heat efficiently. Over time, dirt and grime can accumulate, making your system less effective.

• Check the outdoor coils for dirt or frost buildup.
• Clean with a soft brush or hose (avoid high pressure).

If ice buildup is persistent, contact a Thomas Hoffmann Air Conditioning & Heating professional—it may indicate a refrigerant or defrost system issue.

5. Monitor the Thermostat & Avoid Frequent Adjustments

Constantly changing the thermostat temperature makes your heat pump work harder. Instead:

• Set your thermostat to an energy-efficient temperature and leave it alone.
• In winter, keep it around 68°F when home and lower when sleeping.
• In summer, aim for 78°F when home and higher when away.

Consider a smart thermostat to optimize efficiency and reduce energy costs.

6. Ensure Proper Airflow Around Indoor Vents

Blocked vents disrupt airflow and strain your heat pump.

• Keep furniture, curtains, and rugs away from vents.
• Regularly dust and vacuum around supply and return vents.

For ducted heat pumps, consider duct cleaning every few years to maintain efficiency.

When to Call a Professional

While routine maintenance helps prevent major problems, some issues require expert attention. Call Thomas Hoffmann Air Conditioning & Heating if you notice:

• Heat pump is not heating or cooling properly
• Unusual noises or smells coming from the unit
• Short cycling (unit turns on and off frequently)
• A sudden spike in energy bills
• Frozen or leaking outdoor unit

Our team serves St. Louis, Ballwin, Chesterfield, Kirkwood, Creve Coeur, and surrounding areas.