La Palma, CA: the heat pump payback math
In La Palma, a heat pump pays for itself within a reasonable window. $1,000 is what La Palma 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. La Palma's residents would see roughly $125 a year back in running costs, putting the payback around 8 years. That's a real payback, built from La Palma's own climate and utility rates, not a national guess.
The climate behind La Palma's payback figure
1315 heating degree days pile up here every year, so La Palma barely has a winter to speak of; the cooling side runs to 1024 cooling degree days, where summers are hot enough that cooling matters as much as heating. Sizing runs off the design temperature, not the average day: 39°F here (record low 35.1°F), which works out to a seasonal COP of 3.36 for the standard class of unit this climate calls for. A standard ducted system is enough here; La Palma's design temperature doesn't justify the cold-climate premium. Climate figures trace to the nearest NOAA station, FULLERTON MUNICIPAL ARPT, 3.8 miles from La Palma.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 991 heating kilowatt-hours annually on top of cooling, totalling about $612 a year on electricity. The gas furnace it replaces burns roughly 14 Mcf a year at 22.01 per Mcf here, for a running cost near $737 a year (electricity here runs 32.83¢/kWh). Looked at as a full purchase rather than an incremental one, payback here is roughly 87.9 years, leaving the 15-year total $877 ahead.
Electric resistance heat in La Palma, compared
Plenty of homes in La Palma heat with electricity alone, no gas line involved. 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 $917 a year, which recovers the extra $5,500 spent going electric in roughly 6 years.
Where La Palma ranks in this dataset
Ranked against the other 3206 cities covered, La Palma comes in at 2761 for heating severity — 1 would be the coldest place in the dataset — and 2381 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 La Palma, CA
About 15,092 people live in La Palma, 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.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind La Palma's 3.36 seasonal COP and payback figure. See what La Palma's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.