Heat Pump Payback in Coos Bay, OR
Heat pump vs. gas furnace in Coos Bay, OR
In Coos Bay, the math is close enough that it comes down to how long you plan to stay. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,000. Lower bills claw that back: about $228 saved annually, for a payback of roughly 13.1 years. It's a genuine toss-up here, Coos Bay's numbers don't point clearly either way.
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Coos Bay's weather, in the numbers that matter
Degree days tell the story here: Coos Bay racks up 4355 heating degree days each year (base 65°F), and summers rarely ask much of an air conditioner, with 8 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 32°F, and the coldest daily reading in the 2024 station record was 28.9°F. That puts the seasonal coefficient of performance at 3.15 for the recommended standard unit. Coos Bay's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. These numbers come from North Bend Municipal Airport, the closest NOAA station, 2.3 miles out.
Coos Bay's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 3,501 heating kilowatt-hours annually on top of cooling, totalling about $531 a year on electricity. That compares with roughly 45 Mcf a year of gas at Coos Bay's $16.71 per-Mcf rate, about $759 a year with the old AC included, against a local electricity rate of 15.14¢/kWh. Priced as a standalone purchase, with a working furnace ripped out early, payback would take longer than the 15-year equipment life. Measured against the like-for-like replacement instead, a household here ends 15 years $426 ahead.
How sensitive Coos Bay's result is to prices
Gas would only overtake the heat pump in Coos Bay if electricity rose past 21.7¢/kWh from 15.14¢, or gas fell under $11.67 per Mcf from $16.71. A useful quote test for Coos Bay: the heat pump is worth it within a decade if it costs less than $2,280 more than replacing the furnace and AC, and within 7 years if the gap is under $1,596.
Electric resistance heat in Coos Bay, compared
Plenty of homes in Coos Bay heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $1,140 a year comes back this way, enough that the 6.6-year payback clears the $7,500 premium comfortably within the equipment's life.
Coos Bay against the rest of the country
Among 3206 cities, Coos Bay's winter puts it at rank 1280 for severity, while its size puts it at rank 2317 for population, 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
Next step if you live in Coos Bay
Coos Bay, Oregon is home to about 15,801 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 Coos Bay, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
The methodology guide walks through exactly how Coos Bay's 3.15 seasonal COP and the rest of this page's numbers get built. Homes in Coos Bay without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.