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Heater Types

Heat Pump Water HeatersHigh-efficiency electric replacements and hybrid tanks.Condensing Tankless Water HeatersCondensing whole-home flow with venting constraints.Gas Tank Water HeatersStraight swaps when gas storage is still the fit.

Plan Your Swap

Sizing guideCapacity, first-hour rating, and temperature-rise fit.Accessories hubInstall extras, code-adjacent parts, and paid-link accessory picks.Upgrade from 50 Gallon Electric TO HEAT PUMPUpgrade from 50 Gallon GAS TO HEAT PUMPUpgrade from 65 Gallon TO HEAT PUMPUpgrade from 80 Gallon TO HEAT PUMPUpgrade from GAS TO ElectricUpgrade from GAS TO TanklessHPTA 50 2 vs HPTA 80 2HPTS 50 2 vs NHP50NHP120 vs PROPH80 T2 RH400 30NPE 210S2 vs NPE 240S2NWP500S050AUMB vs NHP50PROPH40 T2 RH400 30 vs PROPH50 T2 RH400 30

Guides & Data

Arizona heat pump guideCalifornia heat pump guideColorado heat pump guideConnecticut heat pump guideFlorida heat pump guideGeorgia heat pump guideIllinois heat pump guideMassachusetts heat pump guideMinnesota heat pump guideNew Jersey heat pump guideNew York heat pump guideNorth Carolina heat pump guideOhio heat pump guideOregon heat pump guidePennsylvania heat pump guideTexas heat pump guideVirginia heat pump guideWashington heat pump guideTax credits & rebatesFederal 25C expired. State HEAR status and active rebate programs.Heat pump vs electric tankAnnual cost comparison using verified model specs.DOE 2029 standardsWhat changes in 2029 and which product classes move first.

Brands

A.O. Smith Water HeatersBradford White Water HeatersNavien Water HeatersNoritz Water HeatersRheem Water HeatersRinnai Water HeatersTakagi Water Heaters
State guide

Heat Pump Water Heaters in Arizona

Local rates, rebates, and climate change which heat pump models make sense.
Arizona operating costs use local energy prices, not national averages.
Running cost Rebates Best fits
Electricity15.5¢/kWh
Gas$1.73/therm
Inlet water62°F
Live models35
Arizona electricity is 10% below the national average. Here's what that means for heat pump operating costs.

Running cost in Arizona

Arizona electricity
15.5¢
per kWh (EIA, Dec 2025)
US average
17.2¢
per kWh
Best HP annual cost
$128
A. O. Smith HPTS-50-2
Electric resistance
$696
~4,500 kWh/yr baseline
Gas tank baseline
$346
~200 therms/yr
Inlet water temperature (62°F annual average) is close to the DOE test standard (58°F). Rated UEF values are a reasonable approximation of real-world performance.

Why Arizona changes the call

01Energy cost
Arizona electricity is 10% below the national average. That directly affects how much a heat pump saves compared to a standard electric tank.
02Climate impact
Incoming water averages 62°F annually and drops to about 52°F in winter. Colder water means the heat pump works harder and real efficiency is slightly lower than rated.
03Available incentives
State and utility rebates can significantly change the payback period. Check what's currently available before finalizing your decision.

Rebates in Arizona

The federal $2,000 tax credit (IRA Section 25C) expired December 31, 2025. State and utility rebates listed below may still be available. Verify current status at the links provided.

APS Home Energy Efficiency Rebates

$250-$350
Who: Arizona Public Service (APS)
Eligibility: ENERGY STAR certified. Must be APS residential customer.
https://www.aps.com/en/Residential/Save-Money-and-Energy/Rebates-and-Incentives

SRP Water Heater Rebate

$250
Who: Salt River Project
Eligibility: ENERGY STAR certified heat pump water heater. SRP residential customer.
https://srpnet.com/energy-savings-rebates/rebates/default.aspx

IRA HEAR Rebate (Point-of-Sale)

Not yet available in Arizona as of March 2026. Up to $1,750 for income-qualified households when available.
Arizona has not yet launched its IRA HOMES or HEAR rebate programs.

Install requirements in Arizona

Electrical
Dedicated 240V, 30A circuit (most models). Some newer 120V plug-in models exist but most residential units require 240V. Check the unit's nameplate for exact requirements.
Condensate drain
Heat pump water heaters produce condensate during operation. A condensate drain line to an approved location (floor drain, condensate pump, or exterior) is required.
Air space
Approximately 700 cubic feet of surrounding air (roughly a 10x10x7-foot room). The heat pump extracts heat from surrounding air. Insufficient air volume reduces efficiency and can cause the unit to underperform. Some manufacturers allow ducting to supplement air supply in smaller spaces.
Noise
Heat pump water heaters produce operational noise similar to a window AC unit (45-55 dB). Consider placement away from bedrooms.

Best fits for Arizona

Annual operating cost at Arizona's 15.5¢/kWh rate. Sorted by lowest annual cost.

A. O. Smith
HPTS-50-2
$128/yr 46 gal UEF 3.80 63" tall
Bradford White
RE2HP50-1NCTT
$129/yr 45 gal UEF 3.89 46.1" tall
Navien
NWP500S050AUMB
$130/yr 44 gal UEF 3.85 63" tall
Rinnai
REHP50BM
$130/yr 46 gal UEF 3.75 66.4" tall
Rinnai
REHP50C
$130/yr 46 gal UEF 3.75 66.4" tall
Rheem
PROPH50 T2 RH400-30
$131/yr 45 gal UEF 3.88 61.75" tall
Rheem
PROPH40 T2 RH400-30
$133/yr 36 gal UEF 3.83 62.3" tall
A. O. Smith
HPTA-50-2
$137/yr 46 gal UEF 3.68 63" tall
A. O. Smith
HPTA-40-2
$139/yr 36 gal UEF 3.60 66" tall
Noritz
NHP50
$145/yr 47 gal UEF 3.46 58.3" tall
Bradford White
RE2H50S
$146/yr 45 gal UEF 3.44 59.1875" tall
Noritz
NHP65
$151/yr 57 gal UEF 3.34 63.8" tall
Bradford White
RE2HP65-1NCTT
$183/yr 65 gal UEF 4.20 44.6" tall
Rheem
PROPH65 T2 RH400-30
$183/yr 59 gal UEF 4.05 64.19" tall
Rheem
PROPH80 T2 RH400-30
$188/yr 72 gal UEF 4.07 74.19" tall
Rinnai
REHP80
$189/yr 75 gal UEF 4.00 74.2" tall
Rinnai
REHP80BM
$189/yr 75 gal UEF 4.00 74.2" tall
Rinnai
REHP80C
$189/yr 75 gal UEF 4.00 74.2" tall
A. O. Smith
HPTS-66-2
$191/yr 67 gal UEF 3.70 61.5" tall
Bradford White
RE2HP80-1NCTT
$192/yr 75 gal UEF 4.00 51.1" tall
Navien
NWP500S065AUMB
$192/yr 61 gal UEF 4.03 63" tall
Rinnai
REHP65
$192/yr 60 gal UEF 3.90 65.5" tall
Rinnai
REHP65BM
$192/yr 60 gal UEF 3.90 65.5" tall
Rinnai
REHP65C
$192/yr 60 gal UEF 3.90 45.5" tall
Rinnai
REHP65CW
$192/yr 60 gal UEF 3.90 45.5" tall
Rinnai
REHP65W
$192/yr 60 gal UEF 3.90 45.5" tall
Rinnai
REHP65WC
$192/yr 60 gal UEF 3.90 45.5" tall
Navien
NWP500S080AUMB
$196/yr 74 gal UEF 4.05 71.6" tall
A. O. Smith
HPTA-80-2
$198/yr 81 gal UEF 3.88 69" tall
A. O. Smith
HPTS-80-2
$198/yr 82 gal UEF 3.88 69" tall
A. O. Smith
HPTA-66-2
$200/yr 68 gal UEF 3.84 61" tall
Bradford White
RE2H65T
$211/yr 64 gal UEF 3.64 63.75" tall
Bradford White
RE2H80T
$214/yr 75 gal UEF 3.59 70.8125" tall
Noritz
NHP80
$220/yr 74 gal UEF 3.48 74" tall
Noritz
NHP120
$227/yr 109 gal UEF 3.38 84.5" tall

Your next click

All heat pump modelsCompare specs across brands Back to homepageCompare other types or find a specific model Lowest cost: A. O. Smith$128/yr in Arizona Sizing guideWhat size do you need?

Sources

Electricity and natural gas rates: U.S. Energy Information Administration (EIA), residential sector, December 2025.

Rebate data compiled from state energy offices, utility program pages, DSIRE, and ENERGY STAR. Rebate amounts and eligibility change frequently. Verify at listed program URLs.

Inlet water temperatures estimated from NOAA climate normals using the Burch-Christensen mains water temperature model (NREL).

Model specifications from ENERGY STAR certified product data and manufacturer spec sheets.

Page generated March 15, 2026. Data freshness varies by source.