A gas tankless water heater is sized by the flow it must deliver at the temperature rise your inlet water demands: read the stated maximum GPM, the BTU/h input, the fuel (natural gas or propane) and whether the unit is listed for indoor or outdoor mounting. Gas supply, venting and combustion air are decided by a licensed plumber or gas installer under your local code, not by a listing.
Exact listing: Rheem RTG Series 8.4 GPM Natural Gas Tankless Water Heater Outdoor | 180,000 BTUs High Efficiency On Demand, Continuous Hot Water | Non-Condensing
Listing identifier: B0C826RQH9. View listing source.
Title identifies the seller's listing; it is not an independent performance test. Check the selected configuration, current price and seller on Amazon.
Natural GasAmazon listing title
OutdoorAmazon listing title
8.4 GPMAmazon listing title
180,000 BTUsAmazon listing title
Run your fixtures and region through the flow-rate calculator, then compare the required GPM at your temperature rise with the maximum flow this listing states. Confirm the fuel, the indoor or outdoor designation and the venting family with a licensed plumber or gas installer under your local code before ordering.
These notes summarize source research, not hands-on testing. Read our research method.
Check the flow rate and temperature rise your home needsA gas tankless water heater is sized by the flow it must deliver at the temperature rise your inlet water demands: read the stated maximum GPM, the BTU/h input, the fuel (natural gas or propane) and whether the unit is listed for indoor or outdoor mounting.
A gas tankless water heater is sized by the flow it must deliver at the temperature rise your inlet water demands: read the stated maximum GPM, the BTU/h input, the fuel (natural gas or propane) and whether the unit is listed for indoor or outdoor mounting.
A gas tankless water heater is sized by the flow it must deliver at the temperature rise your inlet water demands: read the stated maximum GPM, the BTU/h input, the fuel (natural gas or propane) and whether the unit is listed for indoor or outdoor mounting.
A gas tankless water heater is sized by the flow it must deliver at the temperature rise your inlet water demands: read the stated maximum GPM, the BTU/h input, the fuel (natural gas or propane) and whether the unit is listed for indoor or outdoor mounting.
for Rheem RTG Series 8.4 GPM Natural Gas Tankless Water Heater Outdoor | 180,000 BTUs High Efficiency On Demand, Continuous Hot Water | Non-Condensing (opens in a new tab)
