La Grande, OR: the heat pump payback math
La Grande 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). Lower bills claw that back: about $257 saved annually, for a payback of roughly 13.6 years. It's a genuine toss-up here — La Grande's numbers don't point clearly either way.
La Grande's weather, in the numbers that matter
Degree days tell the story here: La Grande racks up 5759 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 563 cooling degree days on the cooling side. 5°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -4°F on file. Worked through the model, that's a seasonal COP of 2.82 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in La Grande — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, LA GRANDE/UNION COUNTY APT, 5.1 miles from La Grande.
The month-to-month numbers for La Grande
Modelled on a typical 2000-square-foot house, the heat pump draws about 5,171 kWh a year to keep it warm, plus cooling, for a combined electric bill near $856 a year. That compares with roughly 60 Mcf a year of gas at La Grande's 16.71 per-Mcf rate — about $1,113 a year — against a local electricity rate of 15.14¢/kWh. Looked at as a full purchase rather than an incremental one, payback here is roughly 52.5 years, leaving the 15-year total $357 ahead.
Electric resistance heat in La Grande, compared
Plenty of homes in La Grande 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. About $1,463 a year comes back this way, enough that the 5.5-year payback clears the $8,000 premium comfortably within the equipment's life.
How La Grande compares nationally
La Grande lands at position 296 out of 3206 cities on heating severity (coldest is 1), and 2644 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.
What to do with this number in La Grande
La Grande, Oregon is home to about 13,058 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 La Grande, 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
The methodology guide walks through exactly how La Grande's 2.82 seasonal COP and the rest of this page's numbers get built. La Grande's 5°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here — see what that changes in the cold-climate unit guide.