Onsen 14L Indoor Natural Gas Tankless Water Heater
Onsen 14L Indoor Natural Gas Tankless Water Heater
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Onsen 14L Indoor Natural Gas Tankless Water Heater
Continuous, direct-vent residential hot water engineered for Canadian municipal connections, apartments, cabins, and suites.
Continuous Hot Water
Delivers up to 3.7 GPM (14 L/min) on demand, reliably powering 1–2 household fixtures simultaneously.
Direct Vent Architecture
Sealed combustion pulls fresh air and vents exhaust safely outside through a 3" Category III flue.
Precise Digital Controls
Front-mounted digital LED interface allows pinpoint temperature selection from 35°C to 60°C.
Certified Safety Standard
Full C-CSA-US certification approved for permanent residential indoor installations across Canada.
Z-Vent 3" Horizontal Vent Kit (Wall Vent)
Heavy-duty stainless steel components designed to vent flue exhaust through an exterior wall. Includes an appliance adapter with a built-in backflow preventer to safeguard internal piping against freezing in cold Canadian winters.
Onsen 3" Insulated Fresh Air Intake Kit
Draws clean outside combustion air to ensure balanced indoor air quality. Features 4–10 ft extendable ducting with thick fiberglass insulation and a flame-retardant Mylar vapor barrier to eliminate condensation and absorb duct vibration.
- Indoor Dedicated: Fully certified for indoor residential use. Must be vented strictly using approved 3" Category III stainless steel venting.
- Combustion Air: Direct-vent installation requires bringing fresh combustion air into the burner via a 3" air intake duct.
- Gas Configuration: Units are factory-set and cannot be field-converted between gas types. Confirm natural gas supply line sizing before installation.
- Tips & Tricks: The Cabin Depot was one of the first companies in Canada to offer specialized tankless water heaters. Check out our Tankless Water Heater Selection Guide for sizing and layout tips.
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