Heat Pump vs. AC + Furnace in Phoenix: Which Actually Makes Sense?
Operating cost, comfort, rebates, and the fine print most contractors don't volunteer.
What changed
Ten years ago the answer was easy: AC + gas furnace. Heat pumps struggled below about 35°F and couldn't beat cheap natural gas on running cost. In 2026, variable-speed inverter heat pumps deliver full capacity down to about 5°F — which is colder than Phoenix ever gets. And with electric rates relatively stable while gas has crept up, the operating cost math has flipped for many homes.
The case for a heat pump in Phoenix
- One piece of equipment covers heating and cooling — simpler and cleaner
- Quieter operation than most gas furnaces
- SRP Cool Cash rebate up to $1,125 on variable-speed heat pumps (SRP customers)
- No combustion = no CO risk, no flue, no gas bill
- Typical operating cost beats gas + AC by 15–25% per year in North Phoenix
The case for sticking with AC + gas furnace
- Your gas service is already paid for and gas prices in AZ are still reasonable
- You have an older home with sub-par insulation (a dual-fuel setup is often better)
- You plan to sell within 3 years — payback window is too short
- You value gas heat's "feels warmer" output (slightly hotter supply air)
The compromise: dual-fuel
Dual-fuel installs a heat pump for 80% of your heating hours (it's cheaper to run from roughly 35°F upward) and hands off to your gas furnace when it's truly cold. It's the best of both worlds, and honestly the right answer for most Anthem, Cave Creek, and Carefree homes sitting above 2,000 ft elevation.
What we install most
Our 2025 install mix was roughly 55% heat pump, 30% AC + gas furnace, 15% dual-fuel. The heat pump share has been climbing 10 points a year, mostly driven by customers who've done the operating-cost math and SRP customers stacking the Cool Cash rebate. The federal 25C tax credit on air-source heat pumps expired at the end of 2025, so 2026 has shifted the decision more toward operating cost and utility rebates than tax incentives — but the math still favors heat pumps for most Phoenix homes.
Federal incentives in 2026 — the truth
The 30% federal tax credit on air-source heat pumps (Section 25C) ended December 31, 2025. Geothermal heat pumps still qualify for the 30% credit through 2032. State-administered IRA programs are filling part of the gap: Arizona's HEAR program offers up to $8,000 to income-qualifying households, and the HOMES program — which isn't income-restricted — is expected to launch in Arizona later in 2026 with up to $4,000 per home based on measured energy savings. On the utility side, SRP's Cool Cash rebate is still very much active and is the cleanest path to immediate dollars off your install. APS ended residential energy-efficiency rebates on January 1, 2026.
Want the math for your specific home?
We do a free side-by-side 10-year operating-cost comparison on every install estimate. No pressure — just the numbers. Get in touch to get yours.