Heat Pump Payback in La Mirada, CA
Should La Mirada switch to a heat pump?
The payback math works in La Mirada on paper, past the equipment's own working life. $3,000 is what La Mirada would pay extra to go electric rather than replace the furnace and AC with the same again. That premium is recovered through $125 of lower running costs every year, landing the payback clock at roughly 24 years. That's a technicality, not a recommendation, for anyone actually living in La Mirada.
Compare against another city
Landed on La Mirada by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
How cold La Mirada actually gets
Degree days tell the story here: La Mirada racks up 1315 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1024 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 39°F here (coldest 2024 reading 35.1°F), which works out to a seasonal COP of 3.36 for the standard class of unit this climate calls for. La Mirada's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. These numbers come from Fullerton Municipal Airport, the closest NOAA station, 2.7 miles out.
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 including the old AC (electricity here runs 32.83¢/kWh). If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $1,123 behind.
How sensitive La Mirada's result is to prices
Gas would only overtake the heat pump in La Mirada if electricity rose past 56.1¢/kWh from 32.83¢, or gas fell under $12.87 per Mcf from $22.01. A useful quote test for La Mirada: the heat pump is worth it within a decade if it costs less than $1,250 more than replacing the furnace and AC, and within 7 years if the gap is under $875.
If your home heats with electric baseboard instead of gas
Not every home in La Mirada has gas service. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. About $917 a year comes back this way, enough that the 8.2-year payback clears the $7,500 premium comfortably within the equipment's life.
How La Mirada compares nationally
Ranked against the other 3206 cities covered, La Mirada comes in at 2759 for heating severity, 1 would be the coldest place in the dataset, and 882 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.
What to do with this number in La Mirada
La Mirada, California is home to about 46,367 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 La Mirada, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
The methodology guide walks through exactly how La Mirada's 3.36 seasonal COP and the rest of this page's numbers get built. La Mirada technically clears a payback on paper, just past the equipment's own working life, the no-payback guide explains why that distinction matters.