Heat Pump Payback in Monrovia, CA
Heat pump vs. gas furnace in Monrovia, CA
Monrovia sits right on the fence, how long you'll own the house decides this one. $3,000 is what Monrovia would pay extra to go electric rather than replace the furnace and AC with the same again. That premium is recovered through $323 of lower running costs every year, landing the payback clock at roughly 9.3 years. Whether that's worth it in Monrovia depends on how many years you expect to own the place.
Compare against another city
Monrovia is one of 3206 cities covered here, each run through the same model. Search another below.
Why Monrovia's climate drives this number
Degree days tell the story here: Monrovia racks up 686 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2300 cooling degree days on the cooling side. 39.2°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 37.4°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.37 on the standard unit fit for this climate. A standard ducted system is enough here; Monrovia's design temperature doesn't justify the cold-climate premium. Source: NOAA station El Monte Airport, 6.2 miles from Monrovia, the closest one on record.
Monrovia's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 515 kWh a year to keep it warm, plus cooling, for a combined electric bill near $813 a year. That compares with roughly 7 Mcf a year of gas at Monrovia's $22.01 per-Mcf rate, about $1,136 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 $1,842 ahead.
How sensitive Monrovia's result is to prices
Because the heat pump's better air conditioning saves more electricity than its heating uses, it stays cheaper to run than the current furnace and AC in Monrovia at any electricity price. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $323 a year saved, a difference under $2,261 pays back within 7 years here, and under $3,230 within 10.
If your home heats with electric baseboard instead of gas
Plenty of homes in Monrovia heat with electricity alone, no gas line involved. 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 $736 a year, which recovers the extra $7,500 spent going electric in roughly 10.2 years.
Where Monrovia ranks in this dataset
Among 3206 cities, Monrovia's winter puts it at rank 3006 for severity, while its size puts it at rank 1100 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.
Deciding what's next in Monrovia, CA
About 37,787 people live in Monrovia, California, and every number on this page is what a contractor would actually work from when quoting a system here, the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Monrovia's 3.37 seasonal COP and payback figure. Not every home in Monrovia has gas; the guide comparing a heat pump against electric baseboard covers that case separately.