Will a heat pump pay off in Enumclaw, WA?

This one's marginal in Enumclaw: it only clears if you stay long enough. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). That premium is recovered through $344 of lower running costs every year, landing the payback clock at roughly 10.2 years. It's a genuine toss-up here — Enumclaw's numbers don't point clearly either way.

Enumclaw's weather, in the numbers that matter

Degree days tell the story here: Enumclaw racks up 4867 heating degree days each year (base 65°F), and summers rarely ask much of an air conditioner, with 227 cooling degree days on the cooling side. 17.6°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 12.2°F on file. Worked through the model, that's a seasonal COP of 3.12 on the cold-climate unit fit for this climate. Enumclaw needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. Climate figures trace to the nearest NOAA station, PIERCE COUNTY AIRPORT THUN FI, 15.6 miles from Enumclaw.

Enumclaw's running-cost comparison, in dollars

Modelled on a typical 2000-square-foot house, the heat pump draws about 3,950 kWh a year to keep it warm, plus cooling, for a combined electric bill near $591 a year. Enumclaw's gas rate of 17.62 per Mcf, applied to the 51 Mcf a year the furnace burns, puts its running cost near $935 a year, against 14.27¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 39.3 years, leaving the 15-year total $1,657 ahead.

If your home heats with electric baseboard instead of gas

Gas isn't universal in Enumclaw — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,209 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $8,000 spent up front comes back in about 6.6 years.

Enumclaw against the rest of the country

Enumclaw lands at position 886 out of 3206 cities on heating severity (coldest is 1), and 2632 out of 3206 by population size (biggest is 1). That's the coldest third of the dataset, where climate does most of the work behind this figure.

Next step for 13,173 people in Enumclaw

Enumclaw, Washington is home to about 13,173 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system — this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Enumclaw, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

Where Enumclaw's figure comes from

The methodology guide walks through exactly how Enumclaw's 3.12 seasonal COP and the rest of this page's numbers get built. At a 17.6°F design temperature, Enumclaw sits in cold-climate territory; the guide to that class of unit explains why.