Is a heat pump worth it in Brentwood?
Brentwood sits right on the fence — how long you'll own the house decides this one. $1,000 is what Brentwood 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. Brentwood's residents would see roughly $123 a year back in running costs, putting the payback around 8.2 years. It's a genuine toss-up here — Brentwood's numbers don't point clearly either way.
Brentwood's weather, in the numbers that matter
1907 heating degree days pile up here every year, so Brentwood has a mild winter by US standards; the cooling side runs to 1014 cooling degree days, where summers are hot enough that cooling matters as much as heating. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 41.4°F, against a record low of 39.7°F. That puts the seasonal coefficient of performance at 3.43 for the recommended standard unit. Brentwood's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Climate figures trace to the nearest NOAA station, PITTSBURG (SUISUN BAY) , 11.7 miles from Brentwood.
The month-to-month numbers for Brentwood
A 2000-square-foot house here would pull roughly 1,408 heating kilowatt-hours annually on top of cooling, totalling about $746 a year on electricity. Brentwood's gas rate of 22.01 per Mcf, applied to the 20 Mcf a year the furnace burns, puts its running cost near $869 a year, against 32.83¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 89.8 years, for a 15-year net position $838 ahead.
The other scenario: no gas furnace to begin with
Gas isn't universal in Brentwood — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $1,271 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 4.3 years.
How Brentwood compares nationally
Ranked against the other 3206 cities covered, Brentwood comes in at 2477 for heating severity — 1 would be the coldest place in the dataset — and 593 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 Brentwood, CA
Brentwood, California is home to about 66,286 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. In Brentwood, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
More on how this number was built
Every constant behind this page — the 3.43 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Homes in Brentwood without gas service should read the electric-resistance comparison instead — the numbers there differ from the gas case above.