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Onsen
Onsen 14L Direct Vent Tankless Propane Water Heater

Onsen 14L Direct Vent Tankless Propane Water Heater

4.6· 5 ratings

Last price we saw

$359.00at onsenproducts.com, last seen Nov 2

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Our take on the Onsen 14L Direct Vent Tankless Propane Water Heater

The Onsen 14L is a direct-vent indoor tankless propane water heater rated at 97,000 BTU with a 3.7 GPM recovery rate. It uses electronic ignition and a digital LED temperature control up to 140°F, and needs a 120V outlet and at least 15 PSI of water pressure. Direct venting means it pulls combustion air from outside and exhausts outside, so it can go in tighter indoor spots than a conventional flue unit. It suits a one-bath apartment, cabin, cottage or tiny home rather than a whole house with multiple simultaneous hot-water draws.

Best forOne-bath cabins, cottages and tiny homesIndoor installs where a direct vent is requiredOff-grid or propane-only propertiesReplacing a small tank heater to free up floor space
Pros
  • Direct vent design pulls combustion air from outside
  • 97,000 BTU output with a 3.7 GPM flow rate
  • Digital temperature control up to 140°F
  • Electronic ignition, no standing pilot
  • Low electrical draw, under 1 amp at 120V
  • Includes two pipe reducers (3.15 in. to 3 in.)
Cons
  • Needs a 120V outlet at the install site
  • Requires at least 15 PSI water pressure
  • 3.7 GPM limits you to roughly one fixture at a time
  • Direct venting needs proper wall or roof termination
  • Propane only, not convertible to natural gas

Onsen 14L Direct Vent Tankless Propane Water Heater prices at every store

  • onsenproducts.comCheck price at onsenproducts.com

Onsen 14L Direct Vent Tankless Propane Water Heater price history

Lowest price we've seen: $359.00 on Nov 2 at onsenproducts.com. Tracked across 1 store since Nov 2.

What reviewers say

Only a handful of ratings are on record, averaging 4.6 out of 5. Buyers of small direct-vent units like this generally report steady hot water for a single bathroom and quiet operation, while complaints tend to center on flow limits and install complexity.

Pros
  • Steady hot water for a single bathroom
  • Compact for cabins and small spaces
  • Digital temperature setting is easy to use
Cons
  • Flow drops with more than one fixture running
  • Venting and 120V wiring add install cost

Specifications

Fuel Type
Propane
Product Type
Tankless water heater
System Type
Tankless Water Heater
Type Features
LED display, Temperature control
Energy Efficiency
Energy-efficient
Recovery Rate
3.7 Gal/Min
Heating Method
Tankless
Temperature Control
Digital control
Heat Up Time
Instant
Heating Capacity
97,000 btus
Heating Element
Gas burner
Ignition Type
Electronic ignition
Included Accessories
2 x pipe reducers (3.15 in. to 3 in.)
Max Temperature
140°F
Flow Pressure
15 PSI (water pressure requirement)
Application
Indoor use, 1-bath apartment, cabin, cottage, tiny home
Power Source
120 volts
Power Voltage
120 volts
Power Amperage
Less than 1 amp
Model Number
14L
Vent Type
Direct vent
Installation Location
Indoor
Installation Requirements
120v outlet needed

Questions and answers

Is the Onsen 14L enough for a whole house?
No. At 3.7 GPM and 97,000 BTU it is sized for one bathroom, a cabin, cottage or tiny home. Running a shower and a sink together will cut pressure and temperature.
What does direct vent mean for installation?
The unit draws combustion air from outside and vents exhaust outside through a wall or roof termination. That lets it sit in tighter indoor spaces, but the vent run and a 120V outlet still have to be planned.
What water pressure does it need?
At least 15 PSI at the inlet. Low-pressure gravity-fed systems common in rural cabins may need a pump.
What comes in the box?
The heater and two pipe reducers (3.15 in. to 3 in.). Vent pipe, the 120V supply and propane connections are separate.
What is the maximum water temperature?
140°F, set through the digital control. That is hot enough for household use but below what some larger tankless models reach.
When is it cheapest?
Tankless heaters tend to dip outside heating season and during fall clearance events. Check the price history on this page before buying.
What do buyers say about the Onsen 14L Direct Vent Tankless Propane Water Heater?
Rated 4.6 out of 5 from 5 ratings.