Is a heat pump worth it in Gig Harbor?

This one's marginal in Gig Harbor: 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 $326 of lower running costs every year, landing the payback clock at roughly 10.7 years. It's a genuine toss-up here — Gig Harbor's numbers don't point clearly either way.

Gig Harbor's weather, in the numbers that matter

Gig Harbor has a real but manageable winter — 4444 heating degree days a year against a 65°F base — and summers rarely ask much of an air conditioner, at 243 cooling degree days. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 19.9°F, against a record low of 17.1°F. That puts the seasonal coefficient of performance at 3.18 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Gig Harbor sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from TACOMA NARROWS AIRPORT, the closest NOAA station, 5 miles out.

The month-to-month numbers for Gig Harbor

Electricity use for heating alone comes out to about 3,539 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $535 a year. Gig Harbor's gas rate of 17.62 per Mcf, applied to the 46 Mcf a year the furnace burns, puts its running cost near $860 a year, against 14.27¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 41.4 years, leaving the 15-year total $1,389 ahead.

If your home heats with electric baseboard instead of gas

Not every home in Gig Harbor has gas service. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. Switching saves about $1,116 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 7.2 years.

Where Gig Harbor ranks in this dataset

Among 3206 cities, Gig Harbor's winter puts it at rank 1223 for severity, while its size puts it at rank 2709 for population — 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.

What to do with this number in Gig Harbor

Gig Harbor, Washington is home to about 12,643 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 Gig Harbor, nothing is lost by holding off until the current equipment genuinely fails.

Line up a few local HVAC quotes before you decide.

More on how this number was built

The methodology guide walks through exactly how Gig Harbor's 3.18 seasonal COP and the rest of this page's numbers get built. Gig Harbor's 19.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.