Gas tankless water heaters on file
Gas-fired instantaneous units, sized by flow rate rather than tank gallons.
489 registered models are gas tankless water heaters. Their filed UEF runs from 0.81 to 0.98 across 4 draw patterns. Each is listed below with its yearly energy, and compared only with others of the same draw pattern.
Other collections
Very small draw pattern
small units - a single bathroom, or a point-of-use heater under a sink — 2 models, lowest yearly energy first.
Low draw pattern
a one- or two-person household — 10 models, lowest yearly energy first.
Medium draw pattern
a typical three- or four-person household, about 55 gallons on a busy morning — 80 models, lowest yearly energy first.
-
RINNAI (RX130I) REU-NB2024FF-US
-
NAVIEN NPE-150S2
-
KENDRAJA KEN-BC2332
-
A. O. SMITH T-H3M-OS-N 1**
-
AMERICAN T-H3M-OS-N 1**
-
LOCHINVAR T-H3M-OS-N 1**
-
RELIANCE WATER HEATERS T-H3M-OS-N 1**
-
STATE T-H3M-OS-N 1**
-
TAKAGI T-H3M-OS-N 1**
-
A. O. SMITH T-H3M-DV-N 1**
-
AMERICAN T-H3M-DV-N 1**
-
FRIEDRICH RTGH-68DVLN-3
-
JOHN WOOD T-H3M-DV-N 1**
-
LOCHINVAR T-H3M-DV-N 1**
-
RELIANCE WATER HEATERS T-H3M-DV-N 1**
-
Rheem RTGH-68DVLN-3
-
Ruud RTGH-68DVLN-3
-
STATE T-H3M-DV-N 1**
-
TAKAGI T-H3M-DV-N 1**
-
Noritz NRC661A-DV-NG
-
Noritz NRC663-FSV-NG
-
RINNAI (RUCS65I) REU-KCM2025FFU-US
-
Fogatti FDG-CS120
-
Fogatti FDG420IN-CS120-LP
-
Mizudo FDG-CS120
-
ORBEK HS120
-
Westinghouse HW120
-
Fogatti FDG-CS120S
-
Fogatti FDG420OD-CS120S-LP
-
Mizudo FDG-CS120S
-
Westinghouse HS120
-
eyoo EA65EH
-
eyoo EA65ZH
-
eyoo EO8K-W
-
Fogatti FDG420IN-CS120-NG
-
Fogatti FDG420OD-CS120S-NG
-
Midea JSQ40-20VHUS-NG
-
Midea JSW40-20VHUS-NG
-
Midea MGWH150ISNN
-
Midea MGWH150ISPN
-
Midea MGWH150OSNN
-
Midea MGWH150OSPN
-
Noritz NR501-OD-LP
-
Noritz NR662-OD-NG
-
Ranein RA65EH
-
Ranein RH8K-LPG
-
Ranein RH8K-NG
-
Ranein RO8K-Y
-
THERMALUX NR662-OD-NG
-
Vancepic VH8KR-LPG
-
Vancepic VH8KR-NG
-
A. O. SMITH ATI-140B-N 1**
-
A. O. SMITH ATO-140B-N 1**
-
A. O. SMITH ATO-140X3-N 1**
-
A. O. SMITH TK-110U-E 2**
-
A. O. SMITH TK-110U-I 2**
-
AMERICAN ATI-140B-N 1**
-
AMERICAN ATO-140B-N 1**
-
AMERICAN TK-110U-E 2**
-
AMERICAN TK-110U-I 2**
-
LOCHINVAR ATI-140B-N 1**
-
LOCHINVAR ATO-140B-N 1**
-
LOCHINVAR TK-110U-E 2**
-
LOCHINVAR TK-110U-I 2**
-
NAVIEN NHW700-120SE-NG
-
RELIANCE WATER HEATERS ATI-140B-N 1**
-
RELIANCE WATER HEATERS ATO-140B-N 1**
-
RELIANCE WATER HEATERS TK-110U-E 2**
-
RELIANCE WATER HEATERS TK-110U-I 2**
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RINNAI RE140E (REU-VE1720WD-US)
-
RINNAI RE140I (REU-VE1720FFD-US)
-
RINNAI RE160E (REU-VE2125WD-US)
-
RINNAI RE160I (REU-VE2125FFD-US)
-
RINNAI V53DE (REU-AM1620WD-US)
-
STATE ATI-140B-N 1**
-
STATE ATO-140B-N 1**
-
STATE TK-110U-E 2**
-
STATE TK-110U-I 2**
-
TAKAGI TK-110U-E 2**
-
TAKAGI TK-110U-I 2**
High draw pattern
a larger household, or one where showers and laundry overlap — 397 models, lowest yearly energy first.
-
BRADFORD WHITE KGWH-150JFN
-
BRADFORD WHITE RTGS150N1
-
Kiturami KGWH-150JFN
-
LAARS KGWH-150JFN
-
LAARS LT150NXX1
-
Noritz EZ98DV (GQ-C2861WX-FF US)
-
Noritz NCC199CDV (GQ-C3261WZ-FF US)
-
Noritz NRCR92DV (GQ-C2661WXQ-FF US)
-
RINNAI (RX180I) REU-NB2934FF-US
-
RINNAI (RX199I) REU-NB3237FF-US
-
RINNAI (RX160I) REU-NB2530FF-US
-
BRADFORD WHITE KGWH-190JFN
-
BRADFORD WHITE RTGS199N1**
-
FRIEDRICH RTGH-S10I
-
FRIEDRICH RTGH-S11I
-
FRIEDRICH RTGH-S84I
-
Kiturami KGWH-190JFN
-
LAARS KGWH-190JFN
-
LAARS LT199NXX1**
-
NAVIEN NPE-180S2
-
NAVIEN NPE-210S2
-
NAVIEN NPE-240S2
-
Noritz EZ111DV (GQ-C3259WX-FF US)
-
Noritz EZ111DV (GQ-C3260WX-FF US)
-
Noritz EZ98DV (GQ-C2859WX-FF US)
-
Pavilion EZ111DV (GQ-C3260WX-FF US)
-
Pavilion UT199DV (GQ-C3260WX-FF PB US)
-
Rheem RTGH-S10I
-
Rheem RTGH-S11I
-
Rheem RTGH-S84I
-
Richmond RTGH-S10I
-
Richmond RTGH-S11I
-
Richmond RTGH-S84I
-
Ruud RTGH-S10I
-
Ruud RTGH-S11I
-
Ruud RTGH-S84I
-
VESTA VRS PLUS-150
-
VESTA VRS PLUS-199
-
VESTA VTP-150
-
VESTA VTP-199
-
VESTA VTS-150
-
VESTA VTS-199
-
VESTA VX 9
-
VESTA VXP 9
-
A. O. SMITH ACTH-199M-(N,P) 1**
-
A. O. SMITH ATHR-160M 1**
-
A. O. SMITH ATHR-180M 1**
-
A. O. SMITH ATHR-199M 1**
-
A. O. SMITH ATM-140M-N 1**
-
A. O. SMITH ATM-160M-N 1**
-
A. O. SMITH ATM-180M-N 1**
-
A. O. SMITH ATM-199M-N 1**
-
A. O. SMITH T-H3-OS-N 1**
-
A. O. SMITH T-H3J-OS-N 1**
-
A. O. SMITH T-H3S-DV-N 1**
-
AMERICAN ACTH-199M-(N,P) 1**
-
AMERICAN ATHR-160M 1**
-
AMERICAN ATHR-180M 1**
-
AMERICAN ATHR-199M 1**
-
AMERICAN ATM-140M-N 1**
-
AMERICAN ATM-160M-N 1**
-
AMERICAN ATM-180M-N 1**
-
AMERICAN ATM-199M-N 1**
-
AMERICAN T-H3-OS-N 1**
-
AMERICAN T-H3J-OS-N 1**
-
AMERICAN T-H3S-DV-N 1**
-
Bosch T9800 SE 160
-
Bosch T9800 SE 199
-
BRADFORD WHITE RTG-K-160N1
-
BRADFORD WHITE RTG-K-160N2
-
BRADFORD WHITE RTG-K-199N1
-
BRADFORD WHITE RTG-K-199N2
-
BRADFORD WHITE T9800 SE 160
-
BRADFORD WHITE T9800 SE 199
-
ELIOS EROD150N0000
-
ELIOS EROD180N0000
-
ELIOS EROD199N0000
-
ELIOS MGWH150IXNN
-
ELIOS MGWH180IXNN
-
ELIOS MGWH199IXNN
-
GSW WATER HEATERS ATHR-160M 1**
-
GSW WATER HEATERS ATHR-180M 1**
-
GSW WATER HEATERS ATHR-199M 1**
-
GSW WATER HEATERS ATM-160M-N 1**
-
GSW WATER HEATERS ATM-180M-N 1**
-
GSW WATER HEATERS ATM-199M-N 1**
-
GSW WATER HEATERS T-H3S-DV-N 1**
-
JOHN WOOD ATHR-160M 1**
-
JOHN WOOD ATHR-180M 1**
-
JOHN WOOD ATHR-199M 1**
-
JOHN WOOD T-H3S-DV-N 1**
-
Kepler JSG48-29PCH/180K
-
Kepler JSG52-32PCH/199KNP
-
Kepler JSG52-32PCH-NG
-
Kepler MGWH180IXNN
-
Kepler MGWH199IXNN
-
Kepler MGWH199IXNP
-
Kiturami KTGWH-180CWS1
-
Kiturami KTGWH-199CWS1
-
LOCHINVAR ACTH-199M-(N,P) 1**
-
LOCHINVAR ATHR-160M 1**
-
LOCHINVAR ATHR-180M 1**
-
LOCHINVAR ATHR-199M 1**
-
LOCHINVAR ATM-140M-N 1**
-
LOCHINVAR ATM-160M-N 1**
-
LOCHINVAR ATM-180M-N 1**
-
LOCHINVAR ATM-199M-N 1**
-
LOCHINVAR T-H3-OS-N 1**
-
LOCHINVAR T-H3J-OS-N 1**
-
LOCHINVAR T-H3S-DV-N 1**
-
Midea JSG48-29PCH-NG
-
Midea JSG52-32PCH-LP
-
Midea JSG52-32PCH-NG
-
Midea MGWH150IXNN
-
Midea MGWH150IXNP
-
Midea MGWH150IXPN
-
Midea MGWH150IXPP
-
Midea MGWH180IXNN
-
Midea MGWH180IXNP
-
Midea MGWH180IXPN
-
Midea MGWH180IXPP
-
Midea MGWH199IXNN
-
Midea MGWH199IXNP
-
Midea MGWH199IXPN
-
Midea MGWH199IXPP
-
MRCOOL MGWH199IXNN
-
MRCOOL MHWH199NCLU
-
MRCOOL MHWH199NCNU
-
NAVIEN NPE-180A2
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NAVIEN NPE-210A2
-
NAVIEN NPE-240A2
-
Noritz NRCR92DV (GQ-C2660WXQ-FF US)
-
RELIANCE WATER HEATERS ATHR-160M 1**
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RELIANCE WATER HEATERS ATHR-180M 1**
-
RELIANCE WATER HEATERS ATHR-199M 1**
-
RELIANCE WATER HEATERS ATM-140M-N 1**
-
RELIANCE WATER HEATERS ATM-160M-N 1**
-
RELIANCE WATER HEATERS ATM-180M-N 1**
-
RELIANCE WATER HEATERS ATM-199M-N 1**
-
RELIANCE WATER HEATERS T-H3-OS-N 1**
-
RELIANCE WATER HEATERS T-H3J-OS-N 1**
-
RELIANCE WATER HEATERS T-H3S-DV-N 1**
-
STATE ACTH-199M-(N,P) 1**
-
STATE ATHR-160M 1**
-
STATE ATHR-180M 1**
-
STATE ATHR-199M 1**
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STATE ATM-140M-N 1**
-
STATE ATM-160M-N 1**
-
STATE ATM-180M-N 1**
-
STATE ATM-199M-N 1**
-
STATE T-H3-OS-N 1**
-
STATE T-H3J-OS-N 1**
-
STATE T-H3S-DV-N 1**
-
Stream 33 MGWH199IXNN
-
TAKAGI T-H3-OS-N 1**
-
TAKAGI T-H3J-OS-N 1**
-
TAKAGI T-H3S-DV-N 1**
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VESTA VHP-199
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VESTA VRP-150
-
VESTA VRP-199
-
VESTA VRP-PLUS-150
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VESTA VRP PLUS-199
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VESTA VRS-150
-
VESTA VRS-199
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A. O. SMITH T-H3J-DV-N 1**
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A. O. SMITH T-H3S-OS-N 1**
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AMERICAN T-H3J-DV-N 1**
-
AMERICAN T-H3S-OS-N 1**
-
GSW WATER HEATERS T-H3J-DV-N 1**
-
JOHN WOOD T-H3J-DV-N 1**
-
LOCHINVAR T-H3J-DV-N 1**
-
LOCHINVAR T-H3S-OS-N 1**
-
RELIANCE WATER HEATERS T-H3J-DV-N 1**
-
RELIANCE WATER HEATERS T-H3S-OS-N 1**
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Rheem RTGH-RH10DVLN *
-
Rheem RTGH-RH11DVLN *
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Richmond RTGH-RH11DVLN *
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Ruud RTGH-RH11DVLN *
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STATE T-H3J-DV-N 1**
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STATE T-H3S-OS-N 1**
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TAKAGI T-H3J-DV-N 1**
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TAKAGI T-H3S-OS-N 1**
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A. O. SMITH T-H3-DV-N 1**
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AMERICAN T-H3-DV-N 1**
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FRIEDRICH RTGH-84DVLN-3
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FRIEDRICH RTGH-90DVLN-3
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FRIEDRICH RTGH-95DVLN-3
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GSW WATER HEATERS T-H3-DV-N 1**
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JOHN WOOD T-H3-DV-N 1**
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LOCHINVAR T-H3-DV-N 1**
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RELIANCE WATER HEATERS T-H3-DV-N 1**
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Rheem RTGH-84DVLN-3
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Rheem RTGH-90DVLN-3
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Rheem RTGH-95DVLN-3
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Rheem RTGH-C95DVLN
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Rheem RTGH-C95XLN
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Richmond RTGH-84DVLN-3
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Richmond RTGH-90DVLN-3
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Richmond RTGH-95DVLN-3
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Ruud RTGH-84DVLN-3
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Ruud RTGH-90DVLN-3
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Ruud RTGH-95DVLN-3
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Ruud RTGH-C95DVLN
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Ruud RTGH-C95XLN
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STATE T-H3-DV-N 1**
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TAKAGI T-H3-DV-N 1**
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CAMPLUX JSLG44-26VE1(2")
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GASLAND JSLG44-26VE1(2")
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JUNSKY JSLG44-26VE1(2")
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Noritz NRC98OD (GQ-C2857WS US)
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TECNOLOVE JSLG44-26VE1(2")
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ThermoMate JSLG44-26VE1(2")
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Noritz NRC111DV (GQ-C3257WX-FF US)
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Noritz NRC111OD (GQ-C3257WX US)
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Noritz NRC98DV (GQ-C2857WS-FF US)
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THERMALUX NRC111DV (GQ-C3257WX-FF US)
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THERMALUX NRC98DV (GQ-C2857WS-FF US)
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IBC Technologies SFT 199-1
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Rheem SFT 199-1
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Richmond SFT 199-1
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RINNAI (RUCS75I) REU-KCM2528FFU-US
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Ruud SFT 199-1
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IBC Technologies SFT 199
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Noritz NRC711-OD-NG
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ENVO WH-AZ54-199-LPO
-
ENVO WH-AZ03-180-LPI
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ENVO WH-AZ04-199-LPI
-
ENVO WH-AZ53-180-LPO
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A. O. SMITH ATI-180B-N 1**
-
A. O. SMITH ATI-199B-N 1**
-
A. O. SMITH ATO-180B-N 1**
-
A. O. SMITH ATO-199B-N 1**
-
AMERICAN ATI-180B-N 1**
-
AMERICAN ATI-199B-N 1**
-
AMERICAN ATO-180B-N 1**
-
AMERICAN ATO-199B-N 1**
-
ENVO WH-AZ51-180-NGO
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eyoo EO11K-W
-
eyoo RA77V
-
Fogatti FDG-CF170
-
Fogatti FDG-PM180S
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FRIEDRICH RTG-70DVLN-3
-
FRIEDRICH RTG-70XLN-3
-
FRIEDRICH RTG-84DVLN-3
-
FRIEDRICH RTG-84XLN-3
-
FRIEDRICH RTG-95DVLN-3
-
FRIEDRICH RTG-95XLN-3
-
LOCHINVAR ATI-180B-N 1**
-
LOCHINVAR ATI-199B-N 1**
-
LOCHINVAR ATO-180B-N 1**
-
LOCHINVAR ATO-199B-N 1**
-
Midea JSQ52-26VHUS-NG
-
Midea JSW52-26VHUS-NG
-
Midea MGWH199ISNN
-
Midea MGWH199ISPN
-
Midea MGWH199OSNN
-
Midea MGWH199OSPN
-
Mizudo FDG-CF170
-
Mizudo HS180
-
Mizudo HW180
-
Noritz NR83DVC (GQ-2457WS-FFA US)
-
Noritz NR98SV (GQ-2857WX-F US)
-
Ranein RH10K-LPG
-
Ranein RH10K-NG
-
Ranein RH12KG-C-LPG
-
Ranein RH12KG-C-NG
-
Ranein RH13K-LPG
-
Ranein RH13K-NG
-
Ranein RH19K-LPG
-
Ranein RH19K-NG
-
Ranein RO11K-Y
-
RELIANCE WATER HEATERS ATI-180B-N 1**
-
RELIANCE WATER HEATERS ATI-199B-N 1**
-
RELIANCE WATER HEATERS ATO-180B-N 1**
-
RELIANCE WATER HEATERS ATO-199B-N 1**
-
RHEEM/ECOSENSE RTG-84DVLN-1
-
RHEEM/ECOSENSE RTG-95DVLN-1
-
Rheem RTG-70DVLN-1
-
Rheem RTG-70DVLN-3
-
Rheem RTG-70XLN-3
-
Rheem RTG-84DVLN-3
-
Rheem RTG-84XLN-3
-
Rheem RTG-95DVLN-3
-
Rheem RTG-95XLN-3
-
Richmond RTG-70DVLN-1
-
Richmond RTG-70DVLN-3
-
Richmond RTG-70XLN-3
-
Richmond RTG-84DVLN-1
-
Richmond RTG-84DVLN-3
-
Richmond RTG-84XLN-3
-
Richmond RTG-95DVLN-1
-
Richmond RTG-95DVLN-3
-
Richmond RTG-95XLN-3
-
RINNAI RE180E (REU-VE2432WD-US)
-
RINNAI RE180I (REU-VE2432FFD-US)
-
RINNAI RE199E (REU-VE2737WD-US)
-
RINNAI RE199I (REU-VE2737FFD-US)
-
RINNAI REP199I (REU-VEP2730FFD-US)
-
RINNAI (V75I)REU-VC2528FFU-US
-
Ruud RTG-70DVLN-1
-
Ruud RTG-70DVLN-3
-
Ruud RTG-70XLN-3
-
Ruud RTG-84DVLN-1
-
Ruud RTG-84DVLN-3
-
Ruud RTG-84XLN-3
-
Ruud RTG-95DVLN-1
-
Ruud RTG-95DVLN-3
-
Ruud RTG-95XLN-3
-
STATE ATI-180B-N 1**
-
STATE ATI-199B-N 1**
-
STATE ATO-180B-N 1**
-
STATE ATO-199B-N 1**
-
Vancepic VH10K-W-LPG
-
Vancepic VH10K-W-NG
-
Vancepic VH12KG-C-LPG
-
Vancepic VH12KG-C-NG
-
Vancepic VH13K-LPG
-
Vancepic VH13K-NG
-
Vancepic VH19K-LPG
-
Vancepic VH19K-NG
-
Westinghouse HS180
-
Westinghouse HW180
-
A. O. SMITH TK-310C-NI 1**
-
A. O. SMITH TK-310CX3 1**
-
A. O. SMITH TK-310U-E 2**
-
A. O. SMITH TK-310U-I 2**
-
A. O. SMITH TK-510C-NI 1**
-
A. O. SMITH TK-510CX3 1**
-
A. O. SMITH TK-510U-E 2**
-
A. O. SMITH TK-510U-I 2**
-
AMERICAN TK-310C-NI 1**
-
AMERICAN TK-310CX3 1**
-
AMERICAN TK-310U-E 2**
-
AMERICAN TK-310U-I 2**
-
AMERICAN TK-510C-NI 1**
-
AMERICAN TK-510CX3 1**
-
AMERICAN TK-510U-E 2**
-
AMERICAN TK-510U-I 2**
-
Electrolex EHW199
-
ENVO WH-AZ01-180-NGI
-
ENVO WH-AZ02-199-NGI
-
ENVO WH-AZ52-199-NGO
-
LOCHINVAR TK-310C-NI 1**
-
LOCHINVAR TK-310CX3 1**
-
LOCHINVAR TK-310U-E 2**
-
LOCHINVAR TK-310U-I 2**
-
LOCHINVAR TK-510C-NI 1**
-
LOCHINVAR TK-510CX3 1**
-
LOCHINVAR TK-510U-E 2**
-
LOCHINVAR TK-510U-I 2**
-
Mizudo HW199
-
NAVIEN NHW700-160AE-NG
-
NAVIEN NHW700-160AI-NG
-
NAVIEN NHW700-160SE-NG
-
NAVIEN NHW700-160SU-NG
-
NAVIEN NHW700-180AE-NG
-
NAVIEN NHW700-180AI-NG
-
NAVIEN NHW700-180SE-NG
-
NAVIEN NHW700-180SU-NG
-
NAVIEN NHW700-199AE-NG
-
NAVIEN NHW700-199AI-NG
-
NAVIEN NHW700-199SE-NG
-
NAVIEN NHW700-199SU-NG
-
RELIANCE WATER HEATERS TK-310C-NI 1**
-
RELIANCE WATER HEATERS TK-310CX3 1**
-
RELIANCE WATER HEATERS TK-310U-E 2**
-
RELIANCE WATER HEATERS TK-310U-I 2**
-
RELIANCE WATER HEATERS TK-510C-NI 1**
-
RELIANCE WATER HEATERS TK-510CX3 1**
-
RELIANCE WATER HEATERS TK-510U-E 2**
-
RELIANCE WATER HEATERS TK-510U-I 2**
-
RHEEM/ECOSENSE RTG-84XLN-1
-
RHEEM/ECOSENSE RTG-95XLN-1
-
Rheem RTG-70XLN-1
-
Richmond RTG-70XLN-1
-
Richmond RTG-84XLN-1
-
Richmond RTG-95XLN-1
-
RINNAI REP199E (REU-VEP2730WD-US)
-
Ruud RTG-70XLN-1
-
Ruud RTG-84XLN-1
-
Ruud RTG-95XLN-1
-
STATE TK-310C-NI 1**
-
STATE TK-310CX3 1**
-
STATE TK-310U-E 2**
-
STATE TK-510C-NI 1**
-
STATE TK-510CX3 1**
-
STATE TK-510U-E 2**
-
STATE TK-510U-I 2**
-
TAKAGI TK-310C-NI 1**
-
TAKAGI TK-310CX3 1**
-
TAKAGI TK-310U-E 2**
-
TAKAGI TK-310U-I 2**
-
TAKAGI TK-510C-NI 1**
-
TAKAGI TK-510CX3 1**
-
TAKAGI TK-510U-E 2**
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TAKAGI TK-510U-I 2**
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Westinghouse HW199
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