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A. O. Smith HPTV-66 2**

A. O. Smith HPTV-66 2** is in the DOE listing as of Oct 26, 2026 and is in the ENERGY STAR list as of Oct 26, 2026.

It has a labeled size of 66 gallons, a certified storage volume of 68 gallons, a certified UEF of 3.20, and a certified first-hour rating of 76 gallons of hot water.

Its advertised UEF of 3.20 from A. O. Smith matches the certified 3.20 (Read Oct 4, 2026).

  • Heat pump water heater
  • 2 listed models
Storage volume
68gallons
UEF
3.20Uniform energy factor
First-hour rating
76gallonsHot water in the first hour
See it among every heat pump model

Advertised and certified figures

A. O. Smith HPTV-66 2**: advertised and certified
A. O. Smith HPTV-66 2**: advertised and certified Size: advertised 66 gal, certified 68 gal (advertised nominal size, certified storage volume). Size: advertised 68 gal, certified 68 gal (certified storage volume). UEF: advertised 3.20, certified 3.20. First-hour rating: advertised 76 gal, certified 76 gal. Size · advertised nominal size, certified storage volume Advertised 66 gal Certified 68 gal Size · certified storage volume Advertised 68 gal Certified 68 gal UEF Advertised 3.20 Certified 3.20 First-hour rating Advertised 76 gal Certified 76 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 66 gal, nominal size 68 gal storage volume A. O. Smith Read Oct 4, 2026
Size 68 gal 68 gal storage volume A. O. Smith Read Oct 4, 2026
UEF 3.20 3.20 A. O. Smith Read Oct 4, 2026
First-hour rating 76 gal 76 gal A. O. Smith Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
HPTV-66 2**683.2076368%High
HPV10-66H01DV 2**683.2076368%High

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
HPTV-66 2**683.2076368%
HPV10-66H01DV 2**683.2076368%

It holds 68 gallons in the test, 2 gallons more than its 66-gallon sold size. Starting full, it gives 76 gallons of hot water in its first hour of use. Its tank holds 68 gallons, so reheating adds 8 gallons during the first hour. Of 481 heat pump models, 186 give more hot water in the first hour. The median heat pump model gives 72 gallons in its first hour.

It has 2 model numbers that are ENERGY STAR certified. In the test, it delivered 3.20 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 high level of daily hot water use. Its UEF is lower than that of 226 of the 237 heat pump models with its draw pattern. A UEF of 3.88 is the median for its type and draw pattern. While it reheats, the water gains 368% of the energy it uses (its recovery efficiency).

It is the basic model for HPTV-66 2** and HPV10-66H01DV 2**. There are 4 more basic models with the same test figures. Each of them is listed under a different brand.

It may qualify for 18 rebate programs in 19 states. Another 6 programs may accept it if it meets their other terms.

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
SMUD Heat pump water heater CA May qualify if it meets the other terms 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
DC Sustainable Energy Utility DCSEU Residential Heating & Cooling Rebates DC May qualify if it meets the other terms 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
Energy Trust of Oregon OR 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
Puget Sound Energy Heat Pump Water Heater Rebate WA May qualify Its own page
Seattle City Light Heat Pump Water Heater Rebates WA May qualify 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 26, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.