Is a heat pump worth it in Marana?
The math in Marana isn't close — a heat pump wins outright. 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 $376 of lower running costs every year, landing the payback clock at roughly 2.7 years. Nothing about that conclusion is generic — it's built entirely from Marana's own numbers.
Why Marana's climate drives this number
1676 heating degree days pile up here every year, so Marana has a mild winter by US standards; the cooling side runs to 3886 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. Sizing runs off the design temperature, not the average day: 28.4°F here (record low 26.6°F), which works out to a seasonal COP of 3.05 for the standard class of unit this climate calls for. A standard ducted system is enough here; Marana's design temperature doesn't justify the cold-climate premium. Source: NOAA station PINAL AIRPARK, 11.6 miles from Marana — the closest one on record.
The month-to-month numbers for Marana
A 2000-square-foot house here would pull roughly 1,391 heating kilowatt-hours annually on top of cooling, totalling about $732 a year on electricity. That compares with roughly 17 Mcf a year of gas at Marana's 18.58 per-Mcf rate — about $1,107 a year — against a local electricity rate of 15.55¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 29.3 years, for a 15-year net position $4,638 ahead.
Electric resistance heat in Marana, compared
Gas isn't universal in Marana — many houses run on electric heat already. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. About $711 a year comes back this way, enough that the 7.7-year payback clears the $5,500 premium comfortably within the equipment's life.
How Marana compares nationally
Among 3206 cities, Marana's winter puts it at rank 2598 for severity, while its size puts it at rank 638 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.
What to do with this number in Marana
About 62,380 people live in Marana, 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.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Marana's 3.05 seasonal COP and payback figure. See what Marana's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.