Heat pump vs. gas furnace in Saratoga, CA
In Saratoga, 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 $1,000 more up front here (already netting out a $2,000 tax credit). Saratoga's residents would see roughly $92 a year back in running costs, putting the payback around 10.8 years. It's a genuine toss-up here — Saratoga's numbers don't point clearly either way.
How cold Saratoga actually gets
Degree days tell the story here: Saratoga racks up 1672 heating degree days each year (base 65°F), and summers add a moderate cooling load, with 922 cooling degree days on the cooling side. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 36°F, against a record low of 35.1°F. That puts the seasonal coefficient of performance at 3.27 for the recommended standard unit. Saratoga's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Source: NOAA station N Y. MINETA SN JO INTL APT, 8.4 miles from Saratoga — the closest one on record.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,295 kWh a year to keep it warm, plus cooling, for a combined electric bill near $683 a year. That compares with roughly 17 Mcf a year of gas at Saratoga's 22.01 per-Mcf rate — about $776 a year — against a local electricity rate of 32.83¢/kWh. Buy it outright, not incrementally, and payback stretches to 119 years; over 15 years the net position sits $386 ahead.
The other scenario: no gas furnace to begin with
Not every home in Saratoga has gas service. 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 $1,099 a year, which recovers the extra $5,500 spent going electric in roughly 5 years.
Where Saratoga ranks in this dataset
Among 3206 cities, Saratoga's winter puts it at rank 2605 for severity, while its size puts it at rank 1340 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 for 30,486 people in Saratoga
Saratoga, California is home to about 30,486 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 Saratoga, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Saratoga's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Saratoga's 3.27 seasonal COP and payback figure. Homes in Saratoga without gas service should read the electric-resistance comparison instead — the numbers there differ from the gas case above.