Outdoor gas tankless · VancEpic

VancEpic V-RHO19K-NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater

190,000 BTU/h outdoor gas tankless, about 6.5 GPM at a 45°F rise

8.5 GPM max190,000 BTU/h~4.2 GPM at 70°F riseNatural gasOutdoor, no vent pipe

Updated October 2026

The short answer

A sensible outdoor gas tankless for houses running 2 showers at once in winter.

Delivers
190,000 BTU/h input.
Watch for
Needs a gas line sized for the load.
Suits
Houses running 2 showers at once in winter.
Max flow (maker)
8.5 GPM
Input (maker)
190,000 BTU/h
Voltage
120 V
Fuel
Natural Gas
Connections
3/4" npt
Material
8.5GPM 190,000 BTU (Outdoor)
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What it delivers

The VancEpic V-RHO19K-NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater is an outdoor gas tankless with a 190,000 BTU/h burner and a stated maximum flow of 8.5 GPM.

Worked out from its input, it delivers roughly 6.5 GPM when the water only has to rise 45°F, and 4.2 GPM at a 70°F winter rise: 3 showers at 2 GPM in summer, 2 showers at 2 GPM in winter. Run your house through the planner.

At full fire it burns about 183 cubic feet of natural gas an hour. The gas line has to carry that on top of the furnace, range and dryer; a gas fitter sizes the pipe from its length and the total load.

Outdoor units vent straight out of the cabinet, which saves the vent run and the wall penetration; plan for freeze protection and a pipe cover where winters bite.

Other listed details: features: LED Display; connections: 3/4" npt; material: 8.5GPM 190,000 BTU (Outdoor); model: V-RHO19K-NG; warranty: 2 Year Manufacturer.

The listing gives dimensions of 15.08 in (W) x 24.25 in (H), a weight of 49 lb and manual x1 in the box.

Warranty, per the listing: 2 Year Manufacturer.

Right unit for this house?

Install it when

  • Houses running 2 showers at once in winter
  • Replacing a gas tank heater

Look at another unit when

  • More than 2 winter showers at once
  • Homes without a gas line

Strengths and trade-offs

Strengths

  • 190,000 BTU/h input
  • Up to 8.5 GPM
  • No vent pipe

Trade-offs

  • Needs a gas line sized for the load
  • Needs freeze protection outdoors
  • Scale builds up without flushing

Install limits

  • Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.

Rated performance

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model numberV-RHO19K-NGRetailer
Dimensions (seller)15.08"W x 24.25"HRetailer
Features (seller)LED DisplayRetailer
Voltage120 VRetailer
Max flow (maker)8.5 GPMRetailer
Input (maker)190,000 BTU/hRetailer
Product weight49 lbRetailer
Warranty2 Year ManufacturerRetailer
Material8.5GPM 190,000 BTU (Outdoor)Retailer
FuelNatural GasRetailer
Connections3/4" nptRetailer

Rival units at this flow

More gas tankless water heaters rated for similar demand

Full gas tankless water heaters spec grid · Every VancEpic unit in the catalog

Final verdict

A sensible outdoor gas tankless for houses running 2 showers at once in winter.

Buy this unit

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Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What flow does the VancEpic V-RHO19K-NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater give in winter?
From its 190,000 BTU/h input we estimate about 6.5 GPM at a 45°F rise and 4.2 GPM at a 70°F rise, so 3 two-GPM showers with mild inlet water and 2 in a cold winter. The maker's flow chart for this model is the final word.
What size gas line does the VancEpic V-RHO19K-NG 190,000 BTU Natural Gas Outdoor Tankless Water Heater need?
At full fire it uses about 183 cubic feet of natural gas an hour. The pipe size depends on the length of the run and every other gas appliance on it; the maker's manual and a licensed gas fitter decide it.