Onsen 26L Indoor Propane Tankless Water Heater (6.9 GPM, 180K BTU)

The Onsen 26L Indoor Propane Tankless Water Heater delivers reliable, on-demand hot water for homes, cottages, and cabins with up to 2 bathrooms. With increased heating power and higher flow capacity, it’s a great choice for households using multiple fixtures at the same time — even during colder Canadian winters.

Its compact indoor design makes installation easy, while the energy-efficient operation heats water only when needed to help reduce propane consumption.

Features

• Endless hot water on demand
• Ideal for homes with up to 2 bathrooms
• Compact indoor direct-vent design
• Electronic ignition (120V) — no standing pilot light
• Simple LED temperature display with preset heating modes
• Energy-efficient operation
• Compatible with 3" Category III stainless steel venting (sold separately)
• CSA certified for indoor use in Canada and the USA

Important Information

• For indoor use only
• Factory-set for propane — cannot be converted to natural gas
• Recommended ¾" gas supply line for best performance
• The unit requires a minimum of 15 PSI water pressure and 0.67 GPM (2.5 L/min) flow to operate.  If using a pump (well or diaphragm), ensure it maintains at least 15 PSI at the water heater inlet—not just at the pump or tank.
• Not compatible with hydronic, recirculating, closed-loop, or in-floor heating systems

What’s Included

• Onsen 26L Indoor Propane Tankless Water Heater ONLY

Recommended Accessories

• 3" Vent Kit
• 3" Insulated Fresh Air Intake
• 3/4" Service Valve Kit
• Hoses, fittings, and propane regulators ( Call us for help choosing the correct sizes and components for your installation)

Need installation assistance? Our licensed G2 gas technician can help ensure your system is installed safely and correctly. Call Sudbury Solar Solutions at 705-524-5000 for more information.

Onsen 26L Manual