Tankless Gas Water Heaters(117 products)

Noritz Indoor Residential Condensing Natural Gas Combination Boiler 199,900 BTUh Input

The NRCB is the first and only combination boiler on the market that can simultaneously provide domestic and space heating for residential applications. These simultaneous capabilities are easy to control and especially beneficial for applications that do not store or deliver heat energy efficiently. A user can, for example, take a shower without worrying about experiencing a corresponding drop in room temperature. Another industry first is the NRCBs use of 316 L stainless steel primary and secondary heat exchangers, which have higher corrosion resistance than traditional heat exchangers for increased durability and lifespan.

Onsen Onsen 1.0L Accumulator Tank

The Onsen 1.0L Accumulator Tank is an ideal complement to automatic water systems, helping to extend the life of the pump, decreasing power consumption, and reducing plumbing noise (pipe hammer) caused by water pressure systems.Designed to work in conjunction with the pump, the Onsen 1.0L Accumulator Tank acts as a pressure buffer, which allows for smoother water flow and reduces on/off cycling by the pump by lessening variations in water pressure and flow between the pump and the water fixtures.By ensuring even water flow and pressure, the Onsen 1.0L Accumulator Tank provides better control of hot water temperatures in water systems using tankless gas water heaters. It is also a great addition to pressure water systems on boats, RVs, cottages, and other similar applications.

Onsen 10L Portable Water Heater with 3.0 Pump & 1.0L Accumulator

The Onsen 10L Portable Tankless water heater allows you to enjoy a hot shower outside anytime, anywhere. Ideal for heating spring / fall water temperatures below 50°F / 10°C, it turns cold water into instant hot water on demand and has an electronic ignition activated by water pressure and flow. Featuring a premium shower head, digital screen and included 12V battery clips, the Onsen 10L runs on a standard propane tank and is perfect for hunting camps, off-grid cabins, camping, boating, pet grooming, horse trailers, stables or simply rinsing off by the pool. Working in combination with the Onsen 3.0 Diaphragm RV / Marine 12V Water Pump, the Onsen 10L will provide the comfort of instant, pressurized, hot water in any off-grid situation. The addition of the Onsen 1L Accumulator Tank ensures even water flow by acting as a pressure buffer for the pump and thus provides better control of hot water temperatures.

Onsen 7L Portable Tankless Water Heater w/ 3.0 Pump

The Onsen 7L Portable Tankless Water Heater allows you to enjoy a hot shower outside anytime, anywhere.Ideal for heating late spring / early fall water temperatures of 45°F / 7°C and warmer, the Onsen 7L turns cold water into instant hot water on demand and features an electronic ignition (no pilot light and no wasted gas) activated by water pressure and flow.Bring water pressure to your tankless water heater! The Onsen 3.0 Pump is an integral part of any off-grid water system. Factory calibrated for seamless installation, the Onsen 3.0 Pump features noise-absorbing mounts and a pressure switch that turns the pump on automatically when a tap is opened.Featuring a premium shower head, digital screen and included 12V battery clips, the Onsen 7L runs on a standard propane tank and is perfect for hunting camps, off-grid cabins, camping, boating, pet grooming, horse trailers, stables or simply rinsing off by the pool.Bring the comfort of Onsen to all your outdoor adventures!