Is a heat pump worth it in Gresham?

Gresham sits right on the fence — how long you'll own the house decides this one. 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 $244 of lower running costs every year, landing the payback clock at roughly 14.3 years. It's a genuine toss-up here — Gresham's numbers don't point clearly either way.

How cold Gresham actually gets

Gresham has a real but manageable winter — 3827 heating degree days a year against a 65°F base — and summers add a moderate cooling load, at 635 cooling degree days. Sizing runs off the design temperature, not the average day: 19°F here (record low 14°F), which works out to a seasonal COP of 3.16 for the cold-climate class of unit this climate calls for. Below the 25°F line where a standard machine starts leaning on resistance backup, Gresham sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, PORTLAND-TROUTDALE AIRPORT, 3.7 miles from Gresham.

Gresham's running-cost comparison, in dollars

A 2000-square-foot house here would pull roughly 3,067 heating kilowatt-hours annually on top of cooling, totalling about $546 a year on electricity. The gas furnace it replaces burns roughly 40 Mcf a year at 16.71 per Mcf here, for a running cost near $791 a year (electricity here runs 15.14¢/kWh). Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 55.2 years, for a 15-year net position $165 ahead.

If your home heats with electric baseboard instead of gas

Plenty of homes in Gresham heat with electricity alone, no gas line involved. 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 $1,045 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 7.7 years.

Where Gresham ranks in this dataset

Ranked against the other 3206 cities covered, Gresham comes in at 1630 for heating severity — 1 would be the coldest place in the dataset — and 290 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.

Next step for 111,507 people in Gresham

Gresham, Oregon is home to about 111,507 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 Gresham, nothing is lost by holding off until the current equipment genuinely fails.

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

More on how this number was built

Every constant behind this page — the 3.16 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Gresham's 19°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.