Should Glendale switch to a heat pump?
In Glendale, a heat pump is the cheaper choice, and not by a little. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $1,000 after a $2,000 federal tax credit. That premium is recovered through $419 of lower running costs every year, landing the payback clock at roughly 2.4 years. Nothing about that conclusion is generic — it's built entirely from Glendale's own numbers.
The climate behind Glendale's payback figure
Degree days tell the story here: Glendale racks up 709 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 5373 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 32°F, against a record low of 30.2°F. That puts the seasonal coefficient of performance at 3.15 for the recommended standard unit. A standard ducted system is enough here; Glendale's design temperature doesn't justify the cold-climate premium. Source: NOAA station GLENDALE MUNICIPAL AIRPORT, 6.1 miles from Glendale — the closest one on record.
Glendale's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 570 kWh a year to keep it warm, plus cooling, for a combined electric bill near $801 a year. Glendale's gas rate of 18.58 per Mcf, applied to the 7 Mcf a year the furnace burns, puts its running cost near $1,220 a year, against 15.55¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 26.3 years, leaving the 15-year total $5,285 ahead.
Electric resistance heat in Glendale, compared
Plenty of homes in Glendale 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 $561 a year, which recovers the extra $5,500 spent going electric in roughly 9.8 years.
How Glendale compares nationally
Among 3206 cities, Glendale's winter puts it at rank 2989 for severity, while its size puts it at rank 89 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 Glendale, AZ
About 258,143 people live in Glendale, Arizona, 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.
Line up a few local HVAC quotes before you decide.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Glendale's 3.15 seasonal COP and payback figure. See what Glendale's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.