Should Imperial switch to a heat pump?
The math in Imperial isn't close — a heat pump wins outright. $1,000 is what Imperial would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Lower bills claw that back: about $399 saved annually, for a payback of roughly 2.5 years. Nothing about that conclusion is generic — it's built entirely from Imperial's own numbers.
The climate behind Imperial's payback figure
Imperial barely has a winter to speak of — 944 heating degree days a year against a 65°F base — and summers are severe enough that cooling can dominate the annual bill, at 2937 cooling degree days. Sizing runs off the design temperature, not the average day: 34°F here (record low 32°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; Imperial's design temperature doesn't justify the cold-climate premium. Climate figures trace to the nearest NOAA station, IMPERIAL COUNTY AIRPORT, 0.5 miles from Imperial.
The month-to-month numbers for Imperial
A 2000-square-foot house here would pull roughly 745 heating kilowatt-hours annually on top of cooling, totalling about $1,067 a year on electricity. Imperial's gas rate of 22.01 per Mcf, applied to the 10 Mcf a year the furnace burns, puts its running cost near $1,466 a year, against 32.83¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 27.5 years, leaving the 15-year total $4,991 ahead.
Electric resistance heat in Imperial, compared
Gas isn't universal in Imperial — 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. About $968 a year comes back this way, enough that the 5.7-year payback clears the $5,500 premium comfortably within the equipment's life.
How Imperial compares nationally
Ranked against the other 3206 cities covered, Imperial comes in at 2931 for heating severity — 1 would be the coldest place in the dataset — and 1773 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.
What to do with this number in Imperial
About 22,102 people live in Imperial, 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, it's worth getting quotes before your current system fails, not after.
Line up a few local HVAC quotes before you decide.
More on how this number was built
The methodology guide walks through exactly how Imperial's 3.21 seasonal COP and the rest of this page's numbers get built. See what Imperial's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.