Heat Pump Payback in Rialto, CA
Heat pump vs. gas furnace in Rialto, CA
In Rialto, the math is close enough that it comes down to how long you plan to stay. Against a like-for-like gas furnace and AC swap, going electric costs $3,000 more up front here. That premium is recovered through $233 of lower running costs every year, landing the payback clock at roughly 12.9 years. Whether that's worth it in Rialto depends on how many years you expect to own the place.
Compare against another city
This runs the same numbers for 3206 US cities, not just Rialto. Look one up here.
The climate behind Rialto's payback figure
Degree days tell the story here: Rialto racks up 1387 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1882 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 33.8°F here (coldest 2024 reading 33.1°F), which works out to a seasonal COP of 3.21 for the standard class of unit this climate calls for. A standard ducted system is enough here; Rialto's design temperature doesn't justify the cold-climate premium. Source: NOAA station Norton Aaf, 8.1 miles from Rialto, the closest one on record.
The yearly running costs in Rialto
A 2000-square-foot house here would pull roughly 1,094 heating kilowatt-hours annually on top of cooling, totalling about $886 a year on electricity. Rialto's gas rate of $22.01 per Mcf, applied to the 14 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $1,119 a year, against 32.83¢ per kWh for electricity. Buying outright rather than at replacement time stretches payback to longer than the 15-year equipment life. Over 15 years, compared with a like-for-like replacement, the heat pump leaves you $490 ahead.
How sensitive Rialto's result is to prices
This result holds unless electricity climbs above 122.4¢/kWh (it is 32.83¢ now) or gas drops below $5.90 per Mcf (now $22.01); past either point, gas becomes the cheaper fuel in Rialto. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $233 a year saved, a difference under $1,631 pays back within 7 years here, and under $2,330 within 10.
The other scenario: no gas furnace to begin with
Not every home in Rialto has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $1,068 a year, which recovers the extra $7,500 spent going electric in roughly 7 years.
Rialto against the rest of the country
Among 3206 cities, Rialto's winter puts it at rank 2738 for severity, while its size puts it at rank 313 for population, 1 in both cases being the extreme. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Next step if you live in Rialto
About 104,918 people live in Rialto, California, 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.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
Every constant behind this page, the 3.21 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Not every home in Rialto has gas; the guide comparing a heat pump against electric baseboard covers that case separately.