Heat Pump Payback in Sandy, UT
Should Sandy switch to a heat pump?
The payback math works in Sandy on paper, past the equipment's own working life. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Sandy's residents would see roughly $110 a year back in running costs, putting the payback around 50.2 years. That's a technicality, not a recommendation, for anyone actually living in Sandy.
Not the city you meant?
Sandy is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Sandy actually gets
Degree days tell the story here: Sandy racks up 4667 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1804 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 19°F, and the coldest daily reading in the 2024 station record was 12.2°F. That puts the seasonal coefficient of performance at 3.16 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Sandy sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station Salt Lake City International, 15.6 miles from Sandy, the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 3,740 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $692 a year. The gas furnace it replaces burns roughly 49 Mcf a year at $10.19 per Mcf here, for a running cost near $802 a year including the old AC (electricity here runs 13.12¢/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 $3,856 behind.
What would change Sandy's answer
Gas would only overtake the heat pump in Sandy if electricity rose past 16.8¢/kWh from 13.12¢, or gas fell under $7.94 per Mcf from $10.19. A useful quote test for Sandy: the heat pump is worth it within a decade if it costs less than $1,100 more than replacing the furnace and AC, and within 7 years if the gap is under $770.
The other scenario: no gas furnace to begin with
Gas isn't universal in Sandy, many houses run on electric heat already. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. The saving here runs about $1,165 a year, which recovers the extra $10,000 spent going electric in roughly 8.6 years.
How Sandy compares nationally
Ranked against the other 3206 cities covered, Sandy comes in at 1023 for heating severity, 1 would be the coldest place in the dataset, and 378 by population, where 1 is largest. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Next step if you live in Sandy
Sandy, Utah is home to about 92,840 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 Sandy, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Sandy's 3.16 seasonal COP and payback figure. At a 19°F design temperature, Sandy sits in cold-climate territory; the guide to that class of unit explains why.