Non-condensing gas tankless · SNDOAS

SNDOAS IF.JSQ30-W16NA 102,000 BTU Natural Gas Tankless Water Heater

102,000 BTU/h non-condensing gas tankless, about 3.5 GPM at a 45°F rise

4.8 GPM max102,000 BTU/h~2.2 GPM at 70°F riseNatural gas

Updated October 2026

The short answer

A practical non-condensing gas tankless for one shower at a time in cold climates.

Delivers
102,000 BTU/h input.
Watch for
Gas pipe sizing to confirm.
Suits
One shower at a time in cold climates.
Max flow (maker)
4.75 GPM
Input (maker)
102,000 BTU/h
Voltage
120 V
Fuel
natural gas
Connections
1/2" npt
Dimensions (seller)
13.8"W x 21.6"H
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What it delivers

The SNDOAS IF.JSQ30-W16NA 102,000 BTU Natural Gas Tankless Water Heater is a non-condensing gas tankless with a 102,000 BTU/h burner and a stated maximum flow of 4.8 GPM.

Flow depends on how cold the incoming water is. Our estimate from its input: 3.5 GPM at a 45°F rise, falling to 2.2 GPM at 70°F, which is 1 shower at 2 GPM on a cold-climate winter day. Size it to your fixtures and climate.

At full fire it burns about 98 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.

Its exhaust runs hot, so the vent must be the material its manual lists, usually stainless; budget for the vent kit.

Also on the listing: features: LED Display, Low Water Flow Protection; connections: 1/2" npt; model: IF.JSQ30-W16NA.

The listing gives dimensions of 13.8 in (W) x 21.6 in (H) and touch control in the box.

Right unit for this house?

Install it when

  • One shower at a time in cold climates
  • 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

  • 102,000 BTU/h input
  • Up to 4.8 GPM

Trade-offs

  • Gas pipe sizing to confirm
  • Stainless venting costs more
  • Needs periodic descaling

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 numberIF.JSQ30-W16NARetailer
Dimensions (seller)13.8"W x 21.6"HRetailer
Features (seller)LED Display, Low Water Flow ProtectionRetailer
Voltage120 VRetailer
Max flow (maker)4.75 GPMRetailer
Input (maker)102,000 BTU/hRetailer
Fuelnatural gasRetailer
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 practical non-condensing gas tankless for one shower at a time in cold climates.

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

Is the SNDOAS IF.JSQ30-W16NA 102,000 BTU Natural Gas Tankless Water Heater big enough for two showers?
From its 102,000 BTU/h input we estimate about 3.5 GPM at a 45°F rise and 2.2 GPM at a 70°F rise, so 1 two-GPM shower with mild inlet water and 1 in a cold winter. The maker's flow chart for this model is the final word.
What size gas line does the SNDOAS IF.JSQ30-W16NA 102,000 BTU Natural Gas Tankless Water Heater need?
At full fire it uses about 98 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.