Water Heater Manuals & Owner Guides — page 10

1,255 models · 74 brands · Data updated October 7, 2026

All water heaters A–Z

Water Heaters
ModelBrandDescriptionCertified
GTHR-180X3 1ATHR-180M 1** Gsw Water Heaters 180,000 Btu/h gas tankless water heater December 2023
GTHR-199M 1ATHR-199M 1** Gsw Water Heaters 199,000 Btu/h gas tankless water heater December 2023
GTHR-199X3 1ATHR-199M 1** Gsw Water Heaters 199,000 Btu/h gas tankless water heater December 2023
GTM-140X3-N 1ATM-140M-N 1** Gsw Water Heaters 140,000 Btu/h natural gas tankless water heater July 2026
GTM-160X3-NATM-160M-N 1** Gsw Water Heaters 160,000 Btu/h natural gas tankless water heater April 2025
GTM-160X3-N 1 Gsw Water Heaters 160,000 Btu/h natural gas tankless water heater July 2026
GTM-180X3-NATM-180M-N 1** Gsw Water Heaters 180,000 Btu/h natural gas tankless water heater April 2025
GTM-180X3-N 1 Gsw Water Heaters 180,000 Btu/h natural gas tankless water heater May 2026
GTM-199X3-NATM-199M-N 1** Gsw Water Heaters 199,000 Btu/h natural gas tankless water heater April 2025
GTM-199X3-N 1 Gsw Water Heaters 199,000 Btu/h natural gas tankless water heater May 2026
GTM-199X3-P 1*1 Gsw Water Heaters 160,000 Btu/h propane tankless water heater May 2026
HF 1 406 G 40 AC S EHELIO-FLO Heliodyne solar water heater with electric backup November 2020
HF 1 408 G 60 AC S EHELIO-FLO Heliodyne solar water heater with electric backup November 2020
HF 1 410 G 80 AC S EHELIO-FLO Heliodyne solar water heater with electric backup November 2020
HPAK 1 406 GT 65 ACD ZHELIO-PAK Heliodyne solar water heater with gas backup December 2023
HPAK 1 408 GT 80 ACD ZHELIO-PAK Heliodyne solar water heater with gas backup December 2023
HPAK 1 410 GT 120 ACD ZHELIO-PAK Heliodyne solar water heater with gas backup December 2023
PH100-119Phoenix HTP 112-gallon residential-duty commercial gas water heater November 2024
PH100-55Phoenix HTP 53-gallon residential-duty commercial gas water heater November 2024
PH100-80Phoenix HTP 75-gallon residential-duty commercial gas water heater November 2024
PH76-50Phoenix Light Duty HTP 48-gallon residential-duty commercial gas water heater November 2024
PH76-60Phoenix Light Duty HTP 58-gallon residential-duty commercial gas water heater November 2024
PH76-80Phoenix Light Duty HTP 77-gallon residential-duty commercial gas water heater November 2024
ME120HPT Hubbell 109-gallon heat pump water heater December 2023
ME50HPT Hubbell 47-gallon heat pump water heater December 2023
ME65HPT Hubbell 57-gallon heat pump water heater December 2023
ME80HPT Hubbell 74-gallon heat pump water heater December 2023
RE2H50S*- Jetglas 45-gallon heat pump water heater February 2023
RE2H65T**- Jetglas 64-gallon heat pump water heater February 2023
RE2H80T*- Jetglas 75-gallon heat pump water heater February 2023
RE2HP50*-1NCTT Jetglas 45-gallon heat pump water heater July 2025
RE2HP65*-1NCTT Jetglas 65-gallon heat pump water heater July 2025
RE2HP80*-1NCTT Jetglas 75-gallon heat pump water heater July 2025
JTHR-160M 1ATHR-160M 1** John Wood 160,000 Btu/h gas tankless water heater December 2023
JTHR-160X3 1ATHR-160M 1** John Wood 160,000 Btu/h gas tankless water heater December 2023
JTHR-180M 1ATHR-180M 1** John Wood 180,000 Btu/h gas tankless water heater December 2023
JTHR-180X3 1ATHR-180M 1** John Wood 180,000 Btu/h gas tankless water heater December 2023
JTHR-199M 1ATHR-199M 1** John Wood 199,000 Btu/h gas tankless water heater December 2023
JTHR-199X3 1ATHR-199M 1** John Wood 199,000 Btu/h gas tankless water heater December 2023
JWHPCO-45 1**+JWXST-50LBTTP 1 John Wood 48-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-50S 1 John Wood 46-gallon split-system heat pump water heater February 2026
JWHPCO-45 1**+JWXST-50STTP 1 John Wood 46-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-50T 1 John Wood 45-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-50TTTP 1 John Wood 45-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-66 1 John Wood 60-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-66TTP 1 John Wood 60-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-80 1 John Wood 73-gallon split-system heat pump water heater March 2026
JWHPCO-45 1**+JWXST-80TTP 1 John Wood 73-gallon split-system heat pump water heater March 2026