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Data / ENERGY STAR / A. O. Smith

A. O. Smith ENERGY STAR certified products: 212 models in 4 categories

A. O. Smith has 212 ENERGY STAR certified products across 4 categories on the EPA's list as read on November 4, 2026. Its newest certification is CAHP-40 2** in heat pump water heaters, dated August 13, 2026, and its largest category is gas water heaters with 83.

SpecStream is the live web data engine for teams and agents. It reads the EPA's ENERGY STAR certified product lists, keyed on the ENERGY STAR Unique ID, and this page is that reading. Ask for the products you track by category, brand or rating, and each new certification arrives in your sheet, CRM, Slack or agent as the EPA publishes it.

Get every product A. O. Smith certifiedWatch new A. O. Smith certificationsCompare brands in gas water heaters
Certified products
212
Categories
4
Newest certification
August 13, 2026
Largest category
Gas water heaters, 83

Certified products by category

Counts and the latest certification date in each category. Categories with several models link to the brand's page for that category.

CategoryCertified productsLatest certification
Gas water heaters83August 13, 2026
Commercial water heaters65August 10, 2026
Heat pump water heaters61August 13, 2026
Boilers3November 9, 2021

Newest A. O. Smith certifications

The 100 most recent certifications of 212. Each row links to the product's record in the EPA's open data portal.

CategoryModelENERGY STAR IDCertifiedSource
Heat pump water heatersCAHP-40 2**4689628August 13, 2026data.energystar.gov
Heat pump water heatersCAHP-50 2**4689619August 13, 2026data.energystar.gov
Heat pump water heatersCAHP-66 2**4689618August 13, 2026data.energystar.gov
Heat pump water heatersCAHP-80 2**4689617August 13, 2026data.energystar.gov
Gas water heatersGPCC-50X 1**4689614August 13, 2026data.energystar.gov
Commercial water heatersBTHS 750A 1**4687335August 10, 2026data.energystar.gov
Commercial water heatersBTHS 1000A 1**4687334August 10, 2026data.energystar.gov
Gas water heatersATM-140M-N 1**4670344July 15, 2026data.energystar.gov
Gas water heatersATM-140X3-N 1**4670343July 15, 2026data.energystar.gov
Gas water heatersGT15TM-140M-N 1**4670334July 15, 2026data.energystar.gov
Gas water heatersACTH-199M-(N,P) 1**4670329July 15, 2026data.energystar.gov
Gas water heatersATM-160X3-P 1*14670328July 15, 2026data.energystar.gov
Gas water heatersGT15TM-160M-N 1**4670327July 15, 2026data.energystar.gov
Gas water heatersGT15TM-160X3-N 1**4670326July 15, 2026data.energystar.gov
Gas water heatersATM-160M-P 1*14670325July 15, 2026data.energystar.gov
Gas water heatersGT15TM-160M-P 1*14670316July 15, 2026data.energystar.gov
Gas water heatersGT15TM-160X3-P 1*14670315July 15, 2026data.energystar.gov
Gas water heatersHCCC-50T 1**4617145May 27, 2026data.energystar.gov
Gas water heatersATM-180X3-P 1*14617144May 27, 2026data.energystar.gov
Gas water heatersATM-199X3-P 1*14617143May 27, 2026data.energystar.gov
Gas water heatersGT15TM-180M-N 1**4617142May 27, 2026data.energystar.gov
Gas water heatersGT15TM-180X3-N 1**4617141May 27, 2026data.energystar.gov
Gas water heatersGT15TM-199M-N 1**4617140May 27, 2026data.energystar.gov
Gas water heatersGT15TM-199X3-N 1**4617139May 27, 2026data.energystar.gov
Gas water heatersATM-180M-P 1*14617138May 27, 2026data.energystar.gov
Gas water heatersATM-199M-P 1*14617137May 27, 2026data.energystar.gov
Gas water heatersGT15TM-180M-P 1*14617120May 27, 2026data.energystar.gov
Gas water heatersGT15TM-199M-P 1*14617119May 27, 2026data.energystar.gov
Gas water heatersGT15TM-199X3-P 1*14617118May 27, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-50LBCTTP 1*4529616March 24, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-80 1**4529470March 24, 2026data.energystar.gov
Gas water heatersGPCC-40L 1**2408766March 24, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-50SC 1**4529429March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-50SCTTP 1**4529425March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-50TC 1**4529421March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-50TCTTP 1**4529417March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-66C 1**4529413March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-66CTTP 1**4529409March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-80C 1**4529405March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45C 1**+AXST-80CTTP 1**4529401March 19, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-50LBTTP 1**4529474February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-50S 1**4529473February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-50T 1**4529472February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-66 1**4529471February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-50STTP 1**4529461February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-50TTTP 1**4529452February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-66TTP 1**4529444February 25, 2026data.energystar.gov
Heat pump water heatersHPACO-45 1**+AXST-80TTP 1**4529435February 25, 2026data.energystar.gov
Gas water heatersGPCT-40L 1**2408769February 25, 2026data.energystar.gov
Gas water heatersGPCX-50L 1**2408768February 25, 2026data.energystar.gov
Commercial water heatersCAHP3CO-64529161February 3, 2026data.energystar.gov
Commercial water heatersCAHP2CO-64529152February 3, 2026data.energystar.gov
Gas water heatersHDHE-75 4**4518079December 12, 2025data.energystar.gov
Gas water heatersHDHE-50 4**4518078December 12, 2025data.energystar.gov
Heat pump water heatersHPSN10-80H45DV 2**4015936December 12, 2025data.energystar.gov
Heat pump water heatersHPSN10-50H45DV 2**4015935December 12, 2025data.energystar.gov
Heat pump water heatersHPSN10-66H45DV 2**4015934December 12, 2025data.energystar.gov
Heat pump water heatersHPA10-66H45DV 2**3417704December 12, 2025data.energystar.gov
Heat pump water heatersHPA10-80H45DV 2**3417565December 12, 2025data.energystar.gov
Heat pump water heatersHPTA-80 2**3417562December 12, 2025data.energystar.gov
Heat pump water heatersHPTA-66 2**3417561December 12, 2025data.energystar.gov
Heat pump water heatersHPA10-50H45DV 2**3417490December 12, 2025data.energystar.gov
Heat pump water heatersHPTA-50 2**3417485December 12, 2025data.energystar.gov
Heat pump water heatersHPA10-40H45DV 2**3417483December 12, 2025data.energystar.gov
Heat pump water heatersHPTA-40 2**3417480December 12, 2025data.energystar.gov
Heat pump water heatersHPTV-50 2**2871545December 12, 2025data.energystar.gov
Heat pump water heatersHPV10-50H01DV 2**2862509December 12, 2025data.energystar.gov
Heat pump water heatersHPTV-66 2**2546252December 12, 2025data.energystar.gov
Heat pump water heatersHPV10-66H01DV 2**2546248December 12, 2025data.energystar.gov
Heat pump water heatersHPTV-80 2**2546244December 12, 2025data.energystar.gov
Heat pump water heatersHPV10-80H01DV 2**2546243December 12, 2025data.energystar.gov
Heat pump water heatersHPTS-66 2**2408852December 12, 2025data.energystar.gov
Heat pump water heatersHPTS-50 2**2408851December 12, 2025data.energystar.gov
Heat pump water heatersHPTS-80 2**2408847December 12, 2025data.energystar.gov
Heat pump water heatersHPS10-66H45DV 2**2408845December 12, 2025data.energystar.gov
Heat pump water heatersHPS10-50H45DV 2**2408844December 12, 2025data.energystar.gov
Heat pump water heatersHPS10-80H45DV 2**2408840December 12, 2025data.energystar.gov
Commercial water heatersAHPA280-2084518032December 11, 2025data.energystar.gov
Commercial water heatersAHPA280-4804518030December 11, 2025data.energystar.gov
Commercial water heatersAHPA140-2084518029December 11, 2025data.energystar.gov
Commercial water heatersAHPA140-4804518027December 11, 2025data.energystar.gov
Commercial water heatersAHPA350-2084518018December 11, 2025data.energystar.gov
Commercial water heatersAHPA350-4804518017December 11, 2025data.energystar.gov
Commercial water heatersAHPA060-4804518016December 11, 2025data.energystar.gov
Commercial water heatersAHPA200-2084518014December 11, 2025data.energystar.gov
Commercial water heatersAHPA200-4804518012December 11, 2025data.energystar.gov
Commercial water heatersAHPA060-2084518010December 11, 2025data.energystar.gov
Commercial water heatersBTX-100 4**4481263August 13, 2025data.energystar.gov
Commercial water heatersBTXL-100 4**4481262August 13, 2025data.energystar.gov
Commercial water heatersBTH-120* 4**4481256August 13, 2025data.energystar.gov
Commercial water heatersBTH-145* 4**4481255August 13, 2025data.energystar.gov
Commercial water heatersBTH-100* 4**4481254August 13, 2025data.energystar.gov
Commercial water heatersBTH-500* 4**4481253August 13, 2025data.energystar.gov
Commercial water heatersBTH-400* 4**4481252August 13, 2025data.energystar.gov
Commercial water heatersBTH-251* 4**4481251August 13, 2025data.energystar.gov
Commercial water heatersBTH-300* 4**4481250August 13, 2025data.energystar.gov
Commercial water heatersBTH-250* 4**4481249August 13, 2025data.energystar.gov
Commercial water heatersBTH-199* 4**4481248August 13, 2025data.energystar.gov
Commercial water heatersBTH-150* 4**4481247August 13, 2025data.energystar.gov
Gas water heatersGT15TM-199M-N4015975April 21, 2025data.energystar.gov

Updated November 4, 2026. Read from ENERGY STAR certified product data, US Environmental Protection Agency (data.energystar.gov). Public domain data from the US EPA and the US Department of Energy. Products are listed as the EPA publishes them on the date this page was read, and the EPA can revise or withdraw a certification. A product is counted once, under the most specific list that holds it. For heat pumps each ENERGY STAR ID is one outdoor and indoor unit combination, so a model number can repeat. Brand names are as published. This page uses EPA data and is not endorsed or certified by the EPA or ENERGY STAR. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.