Heat Pump Payback in Mendota, CA
Should Mendota switch to a heat pump?
In Mendota, the math is close enough that it comes down to how long you plan to stay. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,000. Mendota's residents would see roughly $231 a year back in running costs, putting the payback around 13 years. It's a genuine toss-up here, Mendota's numbers don't point clearly either way.
Compare against another city
Landed on Mendota by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
How cold Mendota actually gets
Degree days tell the story here: Mendota racks up 2176 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2183 cooling degree days on the cooling side. 30°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 28°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.09 on the standard unit fit for this climate. Mendota'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, Madera Municipal Airport, 21.8 miles from Mendota.
The yearly running costs in Mendota
A 2000-square-foot house here would pull roughly 1,783 heating kilowatt-hours annually on top of cooling, totalling about $1,196 a year on electricity. That compares with roughly 23 Mcf a year of gas at Mendota's $22.01 per-Mcf rate, about $1,428 a year with the old AC included, against a local electricity rate of 32.83¢/kWh. Buying outright rather than at replacement time stretches payback to longer than the 15-year equipment life. Over 15 years, compared with a like-for-like replacement, the heat pump leaves you $467 ahead.
The break-even point in Mendota
Gas would only overtake the heat pump in Mendota if electricity rose past 61.2¢/kWh from 32.83¢, or gas fell under $11.81 per Mcf from $22.01. A useful quote test for Mendota: the heat pump is worth it within a decade if it costs less than $2,310 more than replacing the furnace and AC, and within 7 years if the gap is under $1,617.
The other scenario: no gas furnace to begin with
Gas isn't universal in Mendota, many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $1,541 a year, which recovers the extra $7,500 spent going electric in roughly 4.9 years.
Mendota against the rest of the country
Ranked against the other 3206 cities covered, Mendota comes in at 2346 for heating severity, 1 would be the coldest place in the dataset, and 2712 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 Mendota, CA
Mendota, California is home to about 12,623 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 Mendota, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Mendota's figure comes from
Every constant behind this page, the 3.09 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Homes in Mendota without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.