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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 Alaska

Local rates, rebates, and climate change which heat pump models make sense.
Alaska operating costs use local energy prices, not national averages.
Running cost Rebates Best fits
Electricity25.5¢/kWh
Gas$1.23/therm
Inlet water42°F
Live models35
Alaska electricity is 48% above the national average. Here's what that means for heat pump operating costs.

Running cost in Alaska

Alaska electricity
25.5¢
per kWh (EIA, Dec 2025)
US average
17.2¢
per kWh
Best HP annual cost
$212
A. O. Smith HPTS-50-2
Electric resistance
$1149
~4,500 kWh/yr baseline
Gas tank baseline
$246
~200 therms/yr
Colder inlet water (42°F annual average, 34°F in winter) means the heat pump works harder than DOE test conditions assume (58°F). Real-world efficiency will be slightly lower than rated UEF, and winter operating costs will be higher than the annual average.

Why Alaska changes the call

01Energy cost
Alaska electricity is 48% above the national average. That directly affects how much a heat pump saves compared to a standard electric tank.
02Climate impact
Incoming water averages 42°F annually and drops to about 34°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 Alaska

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.

Alaska Housing Finance Corporation (AHFC) Home Energy Rebate Program

Varies by energy improvement; up to $10,000 for comprehensive upgrades including water heaters
Who: Alaska Housing Finance Corporation
Eligibility: Must complete home energy rating before and after improvements. Available to homeowners of single-family residences.
https://www.ahfc.us/efficiency/energy-programs/home-energy-rebate

IRA HEAR Rebate (Point-of-Sale)

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

Install requirements in Alaska

Code basis: Varies by municipality; Anchorage uses amended IPC/IRC

Seismic strapping
Required statewide. Strap must be placed as close to the vertical middle of the water heater as possible without blocking access to controls.
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 Alaska

Annual operating cost at Alaska's 25.5¢/kWh rate. Sorted by lowest annual cost.

A. O. Smith
HPTS-50-2
$212/yr 46 gal UEF 3.80 63" tall
Bradford White
RE2HP50-1NCTT
$213/yr 45 gal UEF 3.89 46.1" tall
Navien
NWP500S050AUMB
$215/yr 44 gal UEF 3.85 63" tall
Rheem
PROPH50 T2 RH400-30
$216/yr 45 gal UEF 3.88 61.75" tall
Rinnai
REHP50BM
$216/yr 46 gal UEF 3.75 66.4" tall
Rinnai
REHP50C
$216/yr 46 gal UEF 3.75 66.4" tall
Rheem
PROPH40 T2 RH400-30
$219/yr 36 gal UEF 3.83 62.3" tall
A. O. Smith
HPTA-50-2
$226/yr 46 gal UEF 3.68 63" tall
A. O. Smith
HPTA-40-2
$230/yr 36 gal UEF 3.60 66" tall
Noritz
NHP50
$240/yr 47 gal UEF 3.46 58.3" tall
Bradford White
RE2H50S
$241/yr 45 gal UEF 3.44 59.1875" tall
Noritz
NHP65
$249/yr 57 gal UEF 3.34 63.8" tall
Bradford White
RE2HP65-1NCTT
$302/yr 65 gal UEF 4.20 44.6" tall
Rheem
PROPH65 T2 RH400-30
$302/yr 59 gal UEF 4.05 64.19" tall
Rheem
PROPH80 T2 RH400-30
$310/yr 72 gal UEF 4.07 74.19" tall
Rinnai
REHP80
$313/yr 75 gal UEF 4.00 74.2" tall
Rinnai
REHP80BM
$313/yr 75 gal UEF 4.00 74.2" tall
Rinnai
REHP80C
$313/yr 75 gal UEF 4.00 74.2" tall
A. O. Smith
HPTS-66-2
$315/yr 67 gal UEF 3.70 61.5" tall
Bradford White
RE2HP80-1NCTT
$317/yr 75 gal UEF 4.00 51.1" tall
Rinnai
REHP65
$317/yr 60 gal UEF 3.90 65.5" tall
Rinnai
REHP65BM
$317/yr 60 gal UEF 3.90 65.5" tall
Rinnai
REHP65C
$317/yr 60 gal UEF 3.90 45.5" tall
Rinnai
REHP65CW
$317/yr 60 gal UEF 3.90 45.5" tall
Rinnai
REHP65W
$317/yr 60 gal UEF 3.90 45.5" tall
Rinnai
REHP65WC
$317/yr 60 gal UEF 3.90 45.5" tall
Navien
NWP500S065AUMB
$318/yr 61 gal UEF 4.03 63" tall
Navien
NWP500S080AUMB
$323/yr 74 gal UEF 4.05 71.6" tall
A. O. Smith
HPTA-80-2
$327/yr 81 gal UEF 3.88 69" tall
A. O. Smith
HPTS-80-2
$327/yr 82 gal UEF 3.88 69" tall
A. O. Smith
HPTA-66-2
$330/yr 68 gal UEF 3.84 61" tall
Bradford White
RE2H65T
$348/yr 64 gal UEF 3.64 63.75" tall
Bradford White
RE2H80T
$353/yr 75 gal UEF 3.59 70.8125" tall
Noritz
NHP80
$364/yr 74 gal UEF 3.48 74" tall
Noritz
NHP120
$375/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$212/yr in Alaska Sizing guideWhat size do you need? Replacement cost guideEquipment, labor, and hidden costs Heat pump vs gas tanklessCompare technologies across fuel types

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 16, 2026. Data freshness varies by source.