Propane tankless · VELPAX

VELPAX VX-CT06 Propane Tankless Water Heater

81,888 BTU/h propane tankless, about 2.8 GPM at a 45°F rise

81,888 BTU/h~1.8 GPM at 70°F risePropane

Updated October 2026

The short answer

A solid propane tankless for one shower at a time in cold climates.

Delivers
81,888 BTU/h input.
Watch for
Needs a gas line sized for the load.
Suits
One shower at a time in cold climates.
Input (maker)
81,888 BTU/h
Fuel
propane
Connections
1/2" npt
Material
Copper, Stainless Steel
Dimensions (seller)
13.8"W x 21.7"H
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

What it delivers

The VELPAX VX-CT06 Propane Tankless Water Heater is a propane tankless with a 81,888 BTU/h burner.

At a 45°F rise (mild inlet water to a 120°F set point) it holds about 2.8 GPM, 1 shower at 2 GPM; in winter, at a 70°F rise, about 1.8 GPM, less than one 2 GPM shower. Size it to your fixtures and climate.

Gas load at full fire: about 0.9 gallons of propane an hour. An older half-inch line that already feeds a furnace often can't spare that, so have a gas fitter check the pipe size and run.

Non-condensing indoor units run hot exhaust and vent in the maker's listed vent system (often stainless Category III), which costs more than plastic.

From the listing: connections: 1/2" npt; material: Copper, Stainless Steel; model: VX-CT06.

The listing gives dimensions of 13.8 in (W) x 21.7 in (H).

Right unit for this house?

Install it when

  • One shower at a time in cold climates
  • Propane homes
  • Replacing a gas tank heater

Look at another unit when

  • More than 1 winter shower at once
  • Homes without a gas line

Strengths and trade-offs

Strengths

  • 81,888 BTU/h input

Trade-offs

  • Needs a gas line sized for the load
  • Stainless venting costs more
  • 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 numberVX-CT06Retailer
Dimensions (seller)13.8"W x 21.7"HRetailer
Features (seller)Multiple Safety Protections, Advanced Combustion Technology, LED Smart Digital Display, Space-Saving Design Multiple Safety Protections, Advanced Combustion Technology, LED Smart Digital Display, Space-Saving DesignRetailer
Input (maker)81,888 BTU/hRetailer
MaterialCopper, Stainless SteelRetailer
FuelpropaneRetailer
Connections1/2" nptRetailer

Rival units at this flow

More gas tankless water heaters rated for similar demand

Full gas tankless water heaters spec grid

Final verdict

A solid propane tankless for one shower at a time in cold climates.

Buy this unit

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

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

How many showers can the VELPAX VX-CT06 Propane Tankless Water Heater run at once?
From its 81,888 BTU/h input we estimate about 2.8 GPM at a 45°F rise and 1.8 GPM at a 70°F rise, so 1 two-GPM shower with mild inlet water and 0 in a cold winter. The maker's flow chart for this model is the final word.
What size gas line does the VELPAX VX-CT06 Propane Tankless Water Heater need?
At full fire it uses about 79 cubic feet of natural gas an hour or 0.9 gallons of propane. 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.