If you have a heat pump keeping your Vermont home comfortable through the summer heat and the winter cold, there’s one maintenance job that’s easy to put off and expensive to ignore: cleaning it.
Brock’s Plumbing, Heating & Air Conditioning gets calls every year from homeowners whose heat pump is running constantly, blowing warm air when it should be cooling, or just not keeping up like it used to. More often than not, the fix isn’t a new part or a refrigerant top-off. It’s a coil packed with dirt, pollen, and grass clippings that hasn’t been properly cleaned.
Why Heat Pump Cleaning Actually Matters
A heat pump moves heat in and out of your home using a coil. Think of it like a radiator sitting outside your house, exposed to everything Vermont weather throws at it. Pollen in the spring, cottonwood fluff and grass clippings in the summer, road dust, leaves in the fall. All of it settles onto those coil fins.
When the coil is coated in debris, the unit can’t transfer heat the way it’s designed to. That means:
- Higher electric bills
- Weaker heating and cooling
- Shorter equipment life
- More repair calls
None of this happens overnight. It’s gradual, which is exactly why people miss it. The system doesn’t fail; it just slowly gets worse until one day you notice the house isn’t as comfortable as it used to be.

How Often You Need It
For most Vermont homes, we recommend a heat pump cleaning once a year, ideally in the spring before cooling season ramps up. That’s when the outdoor unit gets checked over after fall leaves, winter snow, and whatever else settled around it.
A few things that mean you might need it more often than once a year:
- You’ve got trees, shrubs, or a lawn close to the outdoor unit. More organic debris means more buildup.
- You run the system hard, in both directions. Homes that lean on the heat pump for both heating and cooling put more hours on the coil than a system used seasonally.
- You’ve noticed early warning signs — see below.
If your unit sits somewhere clean and open, away from mowing debris and dryer vents, you can sometimes stretch to every 18 months. But annual is the safe default, and it’s a lot easier to remember if you put it on the calendar with your other seasonal maintenance.
Signs Your Heat Pump Needs Cleaning Now
Don’t wait for the annual visit if you’re seeing any of this:
- The outdoor unit is visibly caked with dirt, grass clippings, or pollen film
- Ice building up on the coil or refrigerant lines when it shouldn’t be
- The system runs longer than it used to for the same temperature swing
- Your electric bill has crept up without an obvious reason
- Weak airflow or uneven temperatures room to room
Any of those, give us a call. It’s a lot easier to catch this early than after the compressor’s been straining for a season.

DIY vs. Calling a Pro
You can hose off visible debris from the outside of the unit yourself, making sure the power is off first, gently rinsing, no pressure washer. That helps between professional cleanings, but it doesn’t get the job done on its own.
A proper cleaning gets between the coil fins, checks refrigerant charge and electrical connections, and catches problems, like bent fins or a failing capacitor, before they turn into a breakdown.
Who Cleans Heat Pumps? We Do.
Heat pump cleaning is one of those services that’s easy to overlook until something goes wrong. We built our “Who Cleans Heat Pumps? We Do!” service specifically because a lot of Vermont homeowners didn’t know it was something they should be scheduling every year, or didn’t know who to call for it.
Our heat pump cleaning service area includes most of Franklin and Chittenden counties, all of Grand Isle County, and parts of Lamoille County, where we also handle full plumbing and HVAC service.
Ready to get your heat pump cleaned before the next season change? Schedule a cleaning today!
