Last updated: September 27, 2026
A furnace sits idle all summer. A heat pump doesn't get a break. In Vancouver it heats through a long, damp winter and cools through increasingly hot summers, so it logs far more operating hours than a furnace or an air conditioner alone. That's why heat pump maintenance matters more, and why skipping it shows up on your electric bill.
Short answer: The U.S. Department of Energy recommends professional heat pump service at least once a year, and because a heat pump runs year-round, twice a year (spring and fall) is best. Between visits, homeowners should change filters, keep the outdoor unit clear of leaves, cottonwood fluff and snow, and keep the thermostat off Emergency Heat. A professional tune-up checks refrigerant charge, coils, electrical parts, the defrost cycle, backup heat and airflow.
Why heat pumps need more maintenance than furnaces
A heat pump does two jobs with one set of equipment. The same compressor, coils and fan run whether it's heating or cooling, so wear adds up faster. Our climate adds its own challenges:
- Wet leaves and moss collect around outdoor units through fall and winter.
- Cottonwood fluff mats the outdoor coil in late spring.
- Short hard freezes test the defrost cycle and the backup heat.
- Long heating seasons mean small problems, like low refrigerant or a weak capacitor, run for months before anyone notices.
A heat pump that's low on refrigerant, has dirty coils or has a failing defrost control keeps running, but it runs less efficiently and leans harder on costly backup electric heat. According to the U.S. Department of Energy, a well-maintained heat pump can use 10% to 25% less energy than a severely neglected one. Regular maintenance catches those problems while they're still small.
Heat pump maintenance you can do yourself
These take a few minutes and make the biggest difference between professional visits:
- Check the filter monthly and replace it every one to three months, sooner with pets, allergies or wildfire smoke. A clogged filter cuts airflow and makes the system work harder in both seasons.
- Keep two feet clear around the outdoor unit. Rake out leaves and trim shrubs back.
- Clear snow and ice off the top and sides after a storm, but don't chip ice off the coil. Let the defrost cycle melt it.
- Brush off cottonwood fluff in late May and June, and gently rinse the fins with a garden hose (never a pressure washer) with the power off at the disconnect.
- Check that the unit sits level on its pad or stand, and that gutters and downspouts don't drip onto it.
- Keep indoor vents and return grilles open and unblocked.
- Leave the thermostat on Heat, not Emergency Heat, unless the heat pump has failed. Emergency Heat runs only backup electric heat.
Ductless mini-split maintenance needs a little extra: clean the washable filters in each indoor head as the manufacturer recommends, which is often every few weeks during heavy use, and keep the heads free of dust.
Are you in need of professional services for your home's heat pump?
Contact Tri-Tech Heating, Inc. for expert solutions today!
Heat pump maintenance checklist: what a professional tune-up includes
A professional heat pump tune-up, sometimes called a heat pump inspection or service, should cover:
Outdoor unit
- Clean and inspect the outdoor coil and fins
- Check the fan motor and blade
- Test the compressor, capacitors and contactor
- Tighten and inspect electrical connections
- Check the unit is level and draining properly
Refrigerant and performance
- Measure refrigerant charge and check for leaks
- Test the reversing valve in heating and cooling modes
- Test the defrost cycle and defrost controls
- Measure temperatures and pressures against manufacturer specifications
Indoor unit
- Inspect and clean the indoor coil as needed
- Check the blower motor and wheel
- Clear and test the condensate drain and float switch
- Check airflow and duct static pressure
Controls and backup heat
- Test auxiliary heat strips or the dual-fuel furnace switchover
- Confirm the thermostat is set up for the heat pump, including auxiliary heat lockout
- Check safety controls
Ductless systems also get indoor head coil and blower-wheel cleaning, where dust and mold tend to collect.
How often should a heat pump be serviced?
The U.S. Department of Energy recommends professional service at least once a year. Because a heat pump works in both seasons, many manufacturers recommend twice a year, and that's the schedule we suggest:
- Spring (March–May), before cooling season
- Fall (September–October), before heating season
Fall matters most in the Northwest, since heating runs for months and schedules fill fast after the first cold snap. For a full-year plan covering every season, see our seasonal HVAC maintenance checklist.
Signs your heat pump needs service now
Don't wait for the next scheduled visit if you notice:
- Auxiliary or emergency heat running often in mild weather
- Ice that doesn't clear: a coil encased in solid ice, or ice that stays after a few hours
- Weak airflow or lukewarm air in heating mode
- Short cycling: turning on and off in short bursts
- New noises: grinding, squealing, buzzing or rattling
- A jump in your electric bill without a change in weather or habits
- Water around the indoor unit
More on each of these in Common HVAC Problems and When to Call a Professional.
Keep service on schedule
The easiest way to make sure your heat pump gets both visits is to put them on a schedule. Tri-Tech Heating, Inc.'s Pre-Paid Preventative Maintenance Program (ESA) does that, so your system is checked before each season instead of after something breaks. Contact us to ask about the program for your heat pump.
Heat pump service in Vancouver WA
Tri-Tech Heating, Inc.'s heat pump technicians service ducted heat pumps, ductless mini-splits and dual-fuel systems across Vancouver, Camas, Salmon Creek and Clark and Cowlitz Counties. We install York, American Standard and Mitsubishi equipment, and our work is 100% guaranteed.
Learn how heat pumps work in How Heat Pumps Work in Vancouver WA, see heat pump installation in Vancouver WA, or contact us to schedule heat pump service.
Our office is open Monday through Friday, 8:00am to 5:00pm, and a call to (360) 891-2002 during those hours reaches a person. Outside those hours, email info@tri-techheating.com, and our on-call technician will reply with an ETA. Licensed HVAC #TRITEHI952LL, CCB #161426.
Are you in need of professional services for your home's heat pump?
Contact Tri-Tech Heating, Inc. for expert solutions today!
Frequently Asked Questions
Should I cover my heat pump in winter?
No. Unlike an air conditioner, a heat pump runs all winter and needs open airflow around the outdoor coil. Covering it can damage the system. Just keep snow, ice and leaves cleared from the top and sides.
Is heat pump maintenance different from AC maintenance?
Mostly the same outdoor work, plus more. A heat pump tune-up also tests the reversing valve, defrost cycle and backup heat, which an air conditioner doesn't have, and because it runs year-round, it benefits from service twice a year instead of once.
Company Information
Tri-Tech Heating, Inc.
6406 NE 116th Ave Unit C
Vancouver, WA 98662
Phone: (360) 891-2002