Heat Pump Payback in Glendora, CA
Heat pump vs. gas furnace in Glendora, CA
In Glendora, 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. Lower bills claw that back: about $251 saved annually, for a payback of roughly 12 years. It's a genuine toss-up here, Glendora's numbers don't point clearly either way.
Checking a different city
Glendora is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Glendora actually gets
Degree days tell the story here: Glendora racks up 1219 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1906 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 37.4°F, and the coldest daily reading in the 2024 station record was 35.6°F. That puts the seasonal coefficient of performance at 3.31 for the recommended standard unit. Glendora'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, Brackett Field Airport, 4.8 miles from Glendora.
Glendora's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 933 heating kilowatt-hours annually on top of cooling, totalling about $840 a year on electricity. That compares with roughly 13 Mcf a year of gas at Glendora's $22.01 per-Mcf rate, about $1,090 a year with the old AC included, against a local electricity rate of 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 $761 ahead.
How sensitive Glendora's result is to prices
Gas would only overtake the heat pump in Glendora if electricity rose past 319.5¢/kWh from 32.83¢, or gas fell under $2.26 per Mcf from $22.01. A useful quote test for Glendora: the heat pump is worth it within a decade if it costs less than $2,510 more than replacing the furnace and AC, and within 7 years if the gap is under $1,757.
If your home heats with electric baseboard instead of gas
Not every home in Glendora 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 $985 a year, which recovers the extra $7,500 spent going electric in roughly 7.6 years.
How Glendora compares nationally
Glendora lands at position 2789 out of 3206 cities on heating severity (coldest is 1), and 817 out of 3206 by population size (biggest is 1). 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 Glendora
Glendora, California is home to about 50,101 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 Glendora, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
Where Glendora's figure comes from
The methodology guide walks through exactly how Glendora's 3.31 seasonal COP and the rest of this page's numbers get built. Homes in Glendora without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.