A heat pump doesn't create heat — it moves it. In summer it pulls heat out of your house like an air conditioner; in winter it runs in reverse, extracting heat from outdoor air (yes, even cold air holds heat) and moving it inside. One system, both seasons.
- One system can replace both your AC and an older electric air-handler setup.
- Because it moves heat rather than making it, it delivers more heat energy than the electricity it consumes.
- Chelan County's low hydro rates make heat pumps the dominant system on the west side of the river.
- Modern cold-climate models keep working through Valley winters — sizing matters more than brand.
The refrigeration loop, in plain language
A heat pump circulates refrigerant between an indoor coil and an outdoor coil. The compressor squeezes the refrigerant to raise its temperature, and a reversing valve decides which direction the heat flows — into the house in winter, out of it in summer. That's the whole trick: the same physics as your refrigerator, pointed at your living room. The components to know are the compressor, the two coils, the reversing valve, and the refrigerant charge that ties them together.
Why heat pumps fit this valley in particular
Two local facts do the heavy lifting. First, Chelan County PUD's hydroelectric rates are among the lowest in the nation, so electric heating is unusually cheap here — the economics that make gas competitive elsewhere don't hold on this side of the river. Second, the Valley's climate is dual-peak: 100° stretches in July, single digits in January. A properly sized heat pump handles both, which is why they've become the default recommendation for most Valley homes we serve.
What happens in a deep cold snap
As outdoor temperatures fall, there's less heat in the air to extract, so output drops just when demand rises. Modern cold-climate, variable-speed models are engineered for this and keep meaningful output well below freezing. Systems also run a defrost cycle to melt frost off the outdoor coil — short steam-off periods that are normal, not a malfunction. For homes at elevation or with high exposure (Leavenworth, Plain, the hillside developments), we size accordingly or pair the heat pump with backup heat.
Ducted, ductless, or both
If your home has good ductwork, a ducted heat pump can replace the old cooling system and reduce reliance on electric resistance auxiliary heat. Homes without ducts — cabins, additions, older houses — use ductless mini splits, where slim wall units serve individual zones. Many Valley homes end up with a hybrid: ducted for the main floor, a ductless head for the bonus room or shop. The right answer comes out of a load calculation, not a catalog.
Key terms
The vocabulary you'll hear on estimates and service calls — defined in plain language in our glossary.
Where it goes wrong
The classic Valley failure: dust-choked coils
Orchard and agricultural dust coats the outdoor coil and clogs filters faster here than in most climates. A coated coil can't exchange heat, so the compressor runs longer, bills climb, and components wear early. Twice-a-year cleaning and filter discipline prevent most of it — this is the single most preventable failure we see.
Defrost problems in cold snaps
When sustained freezing weather overwhelms a marginal defrost system — a failing board, sensor, or reversing valve — the outdoor unit encases itself in ice and blows cold air indoors. It's usually a targeted repair, not a replacement. If your unit is a block of ice, shut it off and call before the compressor is damaged.
How we build this guidance
- Written from real service and install work across the Wenatchee Valley — the orchard-dust, hydro-rate, dual-peak-climate conditions in this guide are the ones our techs work in daily.
- Rebate figures reflect published utility program terms at the date below and are re-verified on every estimate — programs change annually.
- No invented pricing: dollar figures appear only where a program publishes them.
Last updated: 2026-07-03 · Central Washington Heating and Air, licensed & insured (LIC# CENTRWH742JN)
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