Heat Pump Payback in Surprise, AZ
Surprise, AZ: the heat pump payback math
A heat pump earns back its extra cost in Surprise within a sensible timeframe. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,000. Surprise's residents would see roughly $407 a year back in running costs, putting the payback around 7.4 years. The window here is reasonable, and it's specific to what Surprise actually pays for power and gas.
Compare against another city
Surprise is one of 3206 cities covered here, each run through the same model. Search another below.
Surprise's weather, in the numbers that matter
1050 heating degree days pile up here every year, so Surprise barely has a winter to speak of; the cooling side runs to 4871 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 31.6°F, and the coldest daily reading in the 2024 station record was 31.5°F. That puts the seasonal coefficient of performance at 3.14 for the recommended standard unit. Surprise's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. These numbers come from Luke AFB Airport, the closest NOAA station, 9.7 miles out.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 847 heating kilowatt-hours annually on top of cooling, totalling about $777 a year on electricity. Surprise's gas rate of $18.58 per Mcf, applied to the 11 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $1,185 a year, against 15.55¢ per kWh for electricity. 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 $3,110 ahead.
The break-even point in Surprise
In Surprise the cooling savings outweigh the extra electricity for heating, so no plausible change in the electricity rate would make the old furnace and AC cheaper to run. A useful quote test for Surprise: the heat pump is worth it within a decade if it costs less than $4,070 more than replacing the furnace and AC, and within 7 years if the gap is under $2,849.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Surprise, many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Surprise's answer improves. About $618 a year comes back this way, enough that the 12.1-year payback clears the $7,500 premium comfortably within the equipment's life.
Where Surprise ranks in this dataset
Ranked against the other 3206 cities covered, Surprise comes in at 2877 for heating severity, 1 would be the coldest place in the dataset, and 159 by population, where 1 is largest. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Deciding what's next in Surprise, AZ
Surprise, Arizona is home to about 167,564 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. Given the math above, Surprise is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Every constant behind this page, the 3.14 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Homes in Surprise without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.