Heat pump vs. gas furnace in Monrovia, CA
Monrovia clears a genuine payback here, inside a reasonable stretch of years. $1,000 is what Monrovia would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. That premium is recovered through $323 of lower running costs every year, landing the payback clock at roughly 3.1 years. That's a real payback, built from Monrovia's own climate and utility rates, not a national guess.
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 record low of 37.4°F on file. 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 — against a local electricity rate of 32.83¢/kWh. Buy it outright, not incrementally, and payback stretches to 34.1 years; over 15 years the net position sits $3,842 ahead.
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 $5,500 spent going electric in roughly 7.5 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, it's worth getting quotes before your current system fails, not after.
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. See what Monrovia's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.