4-GPM Gas Tankless Water Heaters

Gas tankless water heaters rated at about 4 gallons per minute under the DOE test's 77 °F temperature rise. At a milder rise the same units deliver more flow — roughly 5.6 GPM at 55 °F.

22 certified models in this category.

Model Uniform Energy Factor (UEF)FuelFirst-hour ratingMax flow rateRated storage volumeSmart / connected capable
Bradford White RTGR150N1 0.98Natural Gas—4.3 GPM—No
Bradford White RTGR150X1 0.98Propane—4.3 GPM—No
Bradford White RTGS150N1 0.98Natural Gas—4.3 GPM—No
Bradford White RTGS150X1 0.98Propane—4.3 GPM—No
Kiturami KGWH-150JFN 0.98Natural Gas—4.3 GPM—No
Kiturami KGWH-150JFP 0.98Propane—4.3 GPM—No
Kiturami KGWH-150JFRN 0.98Natural Gas—4.3 GPM—No
Kiturami KGWH-150JFRP 0.98Propane—4.3 GPM—No
Laars LT150NRX1 0.98Natural Gas—4.3 GPM—No
Laars LT150NXX1 0.98Natural Gas—4.3 GPM—No
Laars LT150PRX1 0.98Propane—4.3 GPM—No
Laars LT150PXX1 0.98Propane—4.3 GPM—No
Midea JSG40-24PCH-LP 0.95Propane—4.4 GPM—No
Midea JSG40-24PCH-NG 0.95Natural Gas—4.4 GPM—No
Midea MGWH150IXNN 0.95Natural Gas—4.4 GPM—No
Midea MGWH150IXNP 0.95Natural Gas—4.4 GPM—No
Midea MGWH150IXPN 0.95Propane—4.4 GPM—No
Midea MGWH150IXPP 0.95Propane—4.4 GPM—No
Navien NPE-180A2 0.95Natural Gas, Propane—4.3 GPM—No
Navien NPE-180S2 0.96Natural Gas, Propane—4.4 GPM—No
Rinnai RX130I REU-NB2024FF-US 0.97Natural Gas, Propane—3.8 GPM—No
Vesta VRP-150 0.95Natural Gas, Propane—4.3 GPM—No