Will a heat pump pay off in Commerce, CA?
Commerce clears a genuine payback here, inside a reasonable stretch of years. $1,000 is what Commerce 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 $323 saved annually, for a payback of roughly 3.1 years. That's a real payback, built from Commerce's own climate and utility rates, not a national guess.
Why Commerce's climate drives this number
686 heating degree days pile up here every year, so Commerce barely has a winter to speak of; the cooling side runs to 2300 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: 39.2°F here (record low 37.4°F), which works out to a seasonal COP of 3.37 for the standard class of unit this climate calls for. A standard ducted system is enough here; Commerce's design temperature doesn't justify the cold-climate premium. Source: NOAA station EL MONTE AIRPORT, 9.1 miles from Commerce — the closest one on record.
The month-to-month numbers for Commerce
Modelled on a typical 2000-square-foot house, the heat pump draws about 515 kWh a year to keep it warm, plus cooling, for a combined electric bill near $813 a year. That compares with roughly 7 Mcf a year of gas at Commerce's 22.01 per-Mcf rate — about $1,136 a year — against a local electricity rate of 32.83¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 34.1 years, for a 15-year net position $3,842 ahead.
The other scenario: no gas furnace to begin with
Plenty of homes in Commerce heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $736 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $5,500 spent up front comes back in about 7.5 years.
Where Commerce ranks in this dataset
Ranked against the other 3206 cities covered, Commerce comes in at 3013 for heating severity — 1 would be the coldest place in the dataset — and 2825 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 Commerce, CA
About 11,882 people live in Commerce, 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.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Commerce's 3.37 seasonal COP and payback figure. See what Commerce's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.