Heat Pump Payback in Las Vegas, NM
Will a heat pump pay off in Las Vegas, NM?
Las Vegas is a place where a heat pump genuinely costs more to operate than the alternative. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Running costs here land $118 a year higher than the furnace it replaces, so that premium is never recovered. That's Las Vegas's own climate and rates talking, not a hedge or a caveat.
Checking a different city
This runs the same numbers for 3206 US cities, not just Las Vegas. Look one up here.
Las Vegas's weather, in the numbers that matter
5307 heating degree days pile up here every year, so Las Vegas has a cold winter that leans hard on heating equipment; the cooling side runs to 375 cooling degree days, where summers add a moderate cooling load. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 8.1°F, and the coldest daily reading in the 2024 station record was -2.9°F. That puts the seasonal coefficient of performance at 2.89 for the recommended cold-climate unit. Las Vegas needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. These numbers come from Las Vegas Municipal Airport, the closest NOAA station, 5.4 miles out.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 4,650 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $733 a year. The gas furnace it replaces burns roughly 55 Mcf a year at $9.83 per Mcf here, for a running cost near $615 a year including the old AC (electricity here runs 14.75¢/kWh). Because the heat pump costs more to run here, the gap only widens with time: $7,270 behind after 15 years compared with replacing the furnace and AC like-for-like.
How sensitive Las Vegas's result is to prices
For the verdict in Las Vegas to flip, electricity would need to drop to about 12.1¢/kWh from 14.75¢, or gas climb past $11.97 per Mcf from $9.83. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Las Vegas; the case for one here rests on comfort, cooling, or replacing electric heat instead.
Electric resistance heat in Las Vegas, compared
Not every home in Las Vegas has gas service. Swap the comparison to resistance heat instead of gas, and Las Vegas's answer improves. About $1,321 a year comes back this way, enough that the 7.6-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Las Vegas ranks in this dataset
Las Vegas lands at position 480 out of 3206 cities on heating severity (coldest is 1), and 2693 out of 3206 by population size (biggest is 1). That's the coldest third of the dataset, where climate does most of the work behind this figure.
Deciding what's next in Las Vegas, NM
Las Vegas, New Mexico is home to about 12,711 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 Las Vegas, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
More on how this number was built
Every constant behind this page, the 2.89 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Las Vegas's 8.1°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.