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State HPACO-45 1**+AXST-50LBTTP 1**

State HPACO-45 1**+AXST-50LBTTP 1** is in the DOE listing as of Oct 22, 2026. State HPACO-45 1**+AXST-50LBTTP 1** is in the ENERGY STAR list as of Oct 22, 2026.

  • Heat pump water heater
  • 1 listed model

Its figures are also listed under A. O. Smith HPACO-45 1**+AXST-50LBTTP 1**.

Storage volume
48gallons
UEF
3.55Uniform energy factor
First-hour rating
72gallonsHot water in the first hour
See it among every heat pump model

Product history

State HPACO-45 1**+AXST-50LBTTP 1** was in the DOE listing by Oct 1, 2026.

State HPACO-45 1**+AXST-50LBTTP 1** has a recorded ENERGY STAR market-availability date of Feb 13, 2026. It first appeared in the ENERGY STAR list between February 2026 and August 2026.

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
SHPCO-45 1**+SXST-50LBG 1**483.5572428%Medium

UEF is the uniform energy factor. A dash means the model has no such figure.

ENERGY STAR certified models

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiency
SHPCO-45 1**+SXST-50LBG 1**483.5572428%

It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. Starting full, it gives 72 gallons of hot water in its first hour of use. That is 24 gallons more than its tank holds, since it reheats during the hour. Among 481 heat pump models, 240 have a higher first-hour rating. Its first-hour rating matches the median for heat pump models.

It is ENERGY STAR certified under its single model number. In the test, it delivered 3.55 units of hot water energy for each unit used (its UEF). A UEF above 1 is possible because it moves heat from the air into the water. Its test ran at the medium level of daily hot water use. Among 226 heat pump models on its draw pattern, 122 have a higher UEF. On its draw pattern, the median heat pump UEF is 3.68. While it reheats, the water gains 428% of the energy it uses (its recovery efficiency).

All of its test figures are shared by 7 other basic models. Each of them is listed under a different brand. For the full group, see the A. O. Smith HPACO-45 1**+AXST-50LBTTP 1** page.

It may qualify for 17 rebate programs. It may qualify for 5 more if it meets terms its figures do not show.

Also listed as

They carry every figure in the table above.

Rebates

ProgramStateStatusProgram page
Efficiency Arizona AZ May qualify Its own page
SRP Heat pump water heater rebate AZ May qualify Its own page
CleanPowerSF Electrify Your Home bill credits CA May qualify Its own page
Los Angeles Department of Water and Power Consumer Rebate Program CA May qualify Its own page
SVCE Home Rebates CA May qualify if it meets the other terms Its own page
TECH Clean California HEEHRA Phase I CA May qualify Its own page
Colorado Springs Utilities Water heater rebate (heat pump) CO May qualify Its own page
Delaware Electric Cooperative Heat Pump Water Heating Rebate DE May qualify Its own page
Hawai‘i State Energy Office eHale Energy Saver Rebate Program HI May qualify Its own page
Ameren Illinois Instant Incentives IL May qualify Its own page
DTE Energy Water Heaters (heat pump) MI May qualify Its own page
Entergy Mississippi Residential Appliances Program MS May qualify Its own page
NC DEQ Energy Saver North Carolina NC May qualify Its own page
NHSaves Heat Pump Water Heater NH May qualify if it meets the other terms Its own page
PNM Home Energy Checkup Rebates NM May qualify Its own page
PECO Appliance Rebates PA May qualify Its own page
Rhode Island Energy Heat Pump Water Heater Rebate RI May qualify if it meets the other terms Its own page
TVA EnergyRight TN, AL, MS, KY, GA, NC, VA May qualify Its own page
Dominion Energy Virginia Water Energy Savings Program VA May qualify Its own page
Virginia Energy Home Energy Rebates VA May qualify if it meets the other terms Its own page
Focus on Energy (heat pump) WI May qualify if it meets the other terms Its own page
Focus on Energy Home Electrification and Appliance Rebates WI May qualify Its own page

Programs change their terms. Check the program's own page before you buy.

Updated Oct 22, 2026 · Methodology

Not covered

  • Advertised figures. We have none on file for this model.