Heat Pump Payback in Nogales, AZ
Nogales, AZ: the heat pump payback math
In Nogales, the extra upfront cost technically comes back, just not before the equipment wears out. $5,500 is what Nogales would pay extra to go electric rather than replace the furnace and AC with the same again. That premium is recovered through $317 of lower running costs every year, landing the payback clock at roughly 17.3 years. That's a technicality, not a recommendation, for anyone actually living in Nogales.
Compare against another city
Landed on Nogales by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
Nogales's weather, in the numbers that matter
Degree days tell the story here: Nogales racks up 2164 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2414 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 19.9°F, and the coldest daily reading in the 2024 station record was 19°F. That puts the seasonal coefficient of performance at 3.18 for the recommended cold-climate unit. Mild on average, but the occasional cold snap is what sizes the equipment: at a 19.9°F design temperature Nogales falls just under the 25°F line where a standard heat pump starts leaning on resistance backup, so the model prices a cold-climate unit to be safe. These numbers come from Nogales International Airport, the closest NOAA station, 6.6 miles out.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,723 kWh a year to keep it warm, plus cooling, for a combined electric bill near $588 a year. Nogales's gas rate of $18.58 per Mcf, applied to the 23 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $905 a year, against 15.55¢ per kWh for electricity. Priced as a standalone purchase, with a working furnace ripped out early, payback would take longer than the 15-year equipment life. Measured against the like-for-like replacement instead, a household here ends 15 years $742 behind.
What would change Nogales's answer
Gas would only overtake the heat pump in Nogales if electricity rose past 64.1¢/kWh from 15.55¢, or gas fell under $4.50 per Mcf from $18.58. A useful quote test for Nogales: the heat pump is worth it within a decade if it costs less than $3,170 more than replacing the furnace and AC, and within 7 years if the gap is under $2,219.
The other scenario: no gas furnace to begin with
Not every home in Nogales has gas service. Swap the comparison to resistance heat instead of gas, and Nogales's answer improves. About $751 a year comes back this way, enough that the 13.3-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Nogales ranks in this dataset
Ranked against the other 3206 cities covered, Nogales comes in at 2358 for heating severity, 1 would be the coldest place in the dataset, and 1926 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 Nogales
Nogales, Arizona is home to about 19,965 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 Nogales, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Nogales's 3.18 seasonal COP and payback figure. At a 19.9°F design temperature, Nogales sits in cold-climate territory; the guide to that class of unit explains why.