Golden, CO: the heat pump payback math
In Golden, a heat pump would cost more to run each year than what you have now. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). Unfortunately the electric bill outweighs the gas bill it replaces by about $157 a year here, so the extra spend stays unrecovered. There's no spin on that: Golden's numbers say wait.
Why Golden's climate drives this number
Golden has a real but manageable winter — 4908 heating degree days a year against a 65°F base — and summers are hot enough that cooling matters as much as heating, at 1015 cooling degree days. -5.8°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of -11.2°F on file. Worked through the model, that's a seasonal COP of 2.56 on the cold-climate unit fit for this climate. Golden 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 ATCT ROCKY MOUNTAIN METRO, the closest NOAA station, 12 miles out.
Golden's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 4,855 heating kilowatt-hours annually on top of cooling, totalling about $946 a year on electricity. That compares with roughly 51 Mcf a year of gas at Golden's 11.17 per-Mcf rate — about $788 a year — against a local electricity rate of 16.53¢/kWh. Buy it outright, not incrementally, and payback stretches to beyond the 15-year equipment life; over 15 years the net position sits $5,857 behind.
If your home heats with electric baseboard instead of gas
Plenty of homes in Golden 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 $1,326 a year, which recovers the extra $8,000 spent going electric in roughly 6 years.
Where Golden ranks in this dataset
Among 3206 cities, Golden's winter puts it at rank 854 for severity, while its size puts it at rank 1908 for population — 1 in both cases being the extreme. That's the coldest third of the dataset, where climate does most of the work behind this figure.
Next step for 20,151 people in Golden
About 20,151 people live in Golden, Colorado, 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.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
The methodology guide walks through exactly how Golden's 2.56 seasonal COP and the rest of this page's numbers get built. Golden's -5.8°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.