Is a heat pump worth it in Tualatin?

Tualatin sits right on the fence — how long you'll own the house decides this one. $3,500 is what Tualatin would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Tualatin's residents would see roughly $256 a year back in running costs, putting the payback around 13.7 years. Whether that's worth it in Tualatin depends on how many years you expect to own the place.

Why Tualatin's climate drives this number

Degree days tell the story here: Tualatin racks up 4286 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 518 cooling degree days on the cooling side. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 18°F, against a record low of 16°F. That puts the seasonal coefficient of performance at 3.13 for the recommended cold-climate unit. A cold-climate unit is the right call in Tualatin — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from AURORA STATE AIRPORT, the closest NOAA station, 8.8 miles out.

Tualatin's running-cost comparison, in dollars

Electricity use for heating alone comes out to about 3,467 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $592 a year. The gas furnace it replaces burns roughly 45 Mcf a year at 16.71 per Mcf here, for a running cost near $848 a year (electricity here runs 15.14¢/kWh). Looked at as a full purchase rather than an incremental one, payback here is roughly 52.8 years, leaving the 15-year total $336 ahead.

The other scenario: no gas furnace to begin with

Not every home in Tualatin 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. About $1,153 a year comes back this way, enough that the 6.9-year payback clears the $8,000 premium comfortably within the equipment's life.

Tualatin against the rest of the country

Among 3206 cities, Tualatin's winter puts it at rank 1336 for severity, while its size puts it at rank 1426 for population — 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.

Next step for 28,036 people in Tualatin

About 28,036 people live in Tualatin, Oregon, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.

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

Reading further on this page's numbers

Every constant behind this page — the 3.13 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Tualatin's 18°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.