Hot Water List

stream33 S33-95TWH199P-LP/NG

stream33 S33-95TWH199P-LP/NG is in the ENERGY STAR list as of Oct 19, 2026.

  • Gas tankless water heater
  • 1 listed model

No certified figures were found under this model number. Units made for another brand are often certified under that brand's basic model.

Its figures are also listed under stream33 S33-95TWH199-LP/NG.

Certified figures

Flow at a 67°F rise
5.7gallons per minute
UEF
0.95Uniform energy factor

Flow where you live

The heater gives less flow when colder incoming water needs a bigger rise.

Cold water
Cold water must be at least 10°F colder than the hot water setting.
Flow estimate
The estimate uses the lowest certified flow among the listed models. It is about 5.5 gal/min at a 70°F rise.

Flow limits

  • The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
  • Cold water from a well or long pipe run can differ from the temperature you enter.
  • Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.

Product history

stream33 S33-95TWH199P-LP/NG has a recorded ENERGY STAR market-availability date of Oct 30, 2024. It first appeared in the ENERGY STAR list between September 2024 and December 2024.

ENERGY STAR certified models

stream33 S33-95TWH199P-LP/NG: ENERGY STAR certified models
Model numberUEFFlow at a 67°F rise (gal/min)Recovery efficiency
S33-95TWH199P-LP/NG0.955.799%

At a 67°F rise, its flow in the test is 5.7 gallons per minute. The median gas tankless model heats 4.8 gallons per minute by 67°F. Its flow at a 67°F rise trails 60 of the 487 gas tankless models.

It is ENERGY STAR certified under its single model number. In tests, 95% of the energy went to hot water, so its UEF is 0.95. The daily hot water use in the test, called its draw pattern, was high. Among 399 gas tankless models on its draw pattern, 49 have a higher UEF. On its draw pattern, the median gas tankless UEF is 0.93. While it heats water, 99% of the energy used goes into the water (its recovery efficiency).

Its test figures match those of one other basic model. For the full group, see the stream33 S33-95TWH199-LP/NG.

It may qualify for 6 rebate programs. It may qualify for 2 more if it meets terms its figures do not show.

Also listed as

They carry every figure in the table above.

Rebates

Programs change their terms. Check the program's own page before you buy.

Updated Oct 19, 2026 · Methodology

Not covered

  • Advertised figures. We have none on file for this model.