6-GPM Gas Tankless Water Heaters

Gas tankless water heaters rated at about 6 gallons per minute under the DOE test's roughly 67 °F temperature rise. At a milder rise the same units deliver more flow — roughly 7.3 GPM at 55 °F.

30 certified models in this category.

Model Uniform Energy Factor (UEF)FuelFirst-hour ratingMax flow rateRated storage volumeSmart / connected capable
A. O. Smith ACTH-199M-(N,P) 1 0.95Natural Gas, Propane—5.8 GPM—No
A. O. Smith ATHR-199M 1 0.95Natural Gas, Propane—5.9 GPM—No
A. O. Smith ATM-199M-N 1 0.95Natural Gas—6 GPM—No
A. O. Smith ATM-199M-P 1-1 0.95Propane—6 GPM—No
A. O. Smith GT15TM-199M-N 1 0.95Natural Gas—6 GPM—No
A. O. Smith T-H3-OS-N 1 (ACT-199O-P 1-1) 0.95Propane—5.8 GPM—No
Bradford White RTGR199N1 0.96Natural Gas—5.8 GPM—No
Bradford White RTGR199X1 0.96Propane—5.8 GPM—No
Friedrich FDTGH-S11I 0.96Natural Gas, Propane—5.8 GPM—No
Kepler JSG52-32PCH/199KNP 0.96Natural Gas—5.7 GPM—No
Kiturami KTGWH-199CWP1 0.95Natural Gas, Propane—5.8 GPM—No
Midea JSG52-32PCH-LP 0.95Propane—5.7 GPM—No
Midea JSG52-32PCH-NG 0.95Natural Gas—5.7 GPM—No
Navien NPE-240A2 0.95Natural Gas, Propane—5.6 GPM—No
Navien NPE-240S2 0.96Natural Gas, Propane—5.8 GPM—No
Noritz EZ111DV (GQ-C3259WX-FF US) 0.96Natural Gas, Propane—5.8 GPM—No
Noritz EZ111DV (GQ-C3260WX-FF US) 0.96Natural Gas, Propane—5.6 GPM—No
Noritz EZ111DV (GQ-C3261WX-FF-1 US) 0.98Natural Gas, Propane—5.5 GPM—No
Noritz EZ98DV (GQ-C2860WX-FF US) 0.96Natural Gas, Propane—5.6 GPM—No
Noritz NCC199CDV (GQ-C3260WZ-FF US) 0.96Natural Gas, Propane—5.6 GPM—No
Rheem ECOHS200IN 0.96Natural Gas—5.8 GPM—No
Rheem ECOHS200IP 0.96Propane—5.8 GPM—No
Rinnai CX199I REU-NB3237FFC-US 0.98Natural Gas, Propane—5.8 GPM—No
Takagi T-H3-OS-N 1 0.95Natural Gas—5.8 GPM—No
Takagi T-H3-OS-N 1 (TK-540X3-NEH 1) 0.95Natural Gas—5.8 GPM—No
Takagi T-H3-OS-N 1 (TK-540X3-PEH 1-1) 0.95Propane—5.8 GPM—No
Vesta VRP PLUS-199 0.96Natural Gas, Propane—6 GPM—No
Vesta VRS PLUS-199 0.96Natural Gas, Propane—5.9 GPM—No
Vesta VRS PLUS-199 (VTS-199) 0.96Natural Gas, Propane—5.9 GPM—No
Vesta VX 9 0.96Natural Gas, Propane—6 GPM—No