Your heat pump gets professionally serviced twice a year — but it runs every single day. What happens in the months between those visits is up to you, and in a Denver home the between-visit routine is refreshingly small: a monthly filter habit, a seasonal walk-around of the outdoor unit, and an eye for a handful of symptoms. Here's the homeowner's side of the maintenance partnership, laid out as a calendar you can actually follow.
The monthly habit: check the filter
Denver's dry air keeps dust moving year-round, and a heat pump — unlike a furnace that rests all summer — pulls air through its filter twelve months a year. Check it monthly: hold it to a light, and if light doesn't pass through, swap it. Most Denver households settle into a 1–3 month rhythm, faster with pets or allergies. If you upgrade to a denser (higher-MERV) filter for air quality, make sure your system is rated for it — too much resistance chokes airflow just like a dirty filter does.
Fall and winter: the outdoor unit needs breathing room
- Before the first freeze, clear leaves and debris from around the unit and confirm roughly two feet of open space on all sides.
- After snowstorms, brush snow off and away from the unit so airflow and defrost drainage stay open. Don't let roof melt drip directly onto it.
- Know what normal winter frost looks like: a light coating that periodically melts away (the defrost cycle doing its job) is fine. A unit that stays caked in ice for hours is not — shut it off at the power switch and, if you need to melt ice, use warm water. Never chip at the coil with anything sharp.
Spring and summer: drains, coils, and clearance
- Flush the indoor condensate pan and drain line in spring before heavy cooling season — a clogged drain is the classic source of mystery water around the indoor unit.
- Rinse the outdoor coil gently with a garden hose (power off first) to clear pollen and cottonwood fluff.
- Walk the house and confirm supply and return registers aren't blocked by furniture or rugs — closed-off airflow makes the whole system work harder.
All year: be the early-warning system
The cheapest repair is the one caught early. Keep a casual log of anything new: grinding or squealing sounds, musty or burning smells, short bursts of on-off cycling, rooms that drift out of sync, or an energy bill that jumps without a cold snap to blame. Neglect adds up quietly — studies have put the energy penalty of a poorly maintained heat pump at 10–25% — and most of those symptoms start small enough for a quick fix if someone notices them.
What stays off your list
Refrigerant checks, electrical connections, capacitor testing, deep coil cleaning, reversing valve and defrost-cycle verification — all of that requires training, instruments, and in the case of refrigerant, EPA certification. It's also the substance of the professional visit: your between-visit checklist keeps the system breathing, while the spring and fall tune-ups keep it healthy inside. If your system hasn't had its seasonal visit yet, you can book heat pump maintenance in Denver and let a NATE-certified technician reset the baseline your checklist maintains.
The one-page version
- Monthly: filter check.
- Fall/winter: clearance, snow removal, watch the defrost behavior.
- Spring/summer: condensate flush, coil rinse, open registers.
- Always: log new noises, smells, cycling, and bill changes.
- Twice a year: professional heat pump tune-up in Denver.
If something in your log looks bigger than maintenance, Colorado Bear Heating & Air — a family-owned Front Range company with a 5.0-star rating from 175 Google reviews — is available 24/7 at (720) 790-3765.
