- Listed when
- A gas tankless water heater sold as a condensing unit.
- Sorted by
- Input (BTU/h) (highest first)
- In the list
- The top 8 of 9 products in our catalog that meet the rule.
Rheem RTGH-95DVLN-3 199,900 BTU Natural Gas Condensing Tankless Water Heater
199,900 BTU/h, about 5.4 GPM at a 70°F winter rise, 9.5 GPM stated maximum; condensing gas tankless.
Rinnai RX199iN Condensing Tankless Water Heater
199,000 BTU/h, about 5.4 GPM at a 70°F winter rise, 11 GPM stated maximum; condensing gas tankless.
Rinnai CX199iN 199,000 BTU Condensing Tankless Water Heater
199,000 BTU/h, about 5.4 GPM at a 70°F winter rise, 11.1 GPM stated maximum; condensing gas tankless.
Rinnai RX180iN Condensing Tankless Water Heater
180,000 BTU/h, about 4.9 GPM at a 70°F winter rise, 10 GPM stated maximum; condensing gas tankless.
Rinnai RXP160iN Condensing Tankless Water Heater
160,000 BTU/h, about 4.3 GPM at a 70°F winter rise, 9 GPM stated maximum; condensing gas tankless.
Rheem RTGH-84DVLN-3 157,000 BTU Natural Gas Condensing Tankless Water Heater
157,000 BTU/h, about 4.3 GPM at a 70°F winter rise, 8.4 GPM stated maximum; condensing gas tankless.
Rinnai RX130iN Condensing Tankless Water Heater
130,000 BTU/h, about 3.5 GPM at a 70°F winter rise, 7.1 GPM stated maximum; condensing gas tankless.
Ranein RH12KG-C-NG 120,000 BTU Natural Gas Condensing Tankless Water Heater
120,000 BTU/h, about 3.3 GPM at a 70°F winter rise, 5.1 GPM stated maximum; condensing gas tankless.
How to choose between them
Condensing units recover heat from their own exhaust, so they turn more of the gas into hot water and vent in plastic pipe; they need a condensate drain, usually through a neutralizer.
Our flow estimates use 0.95 for condensing units, which reproduces a maker's published flow table for its 199,000 BTU models.
Rankings follow the rule and order stated above, using makers' published specifications and listed prices. How we research · Disclosure