Hot Water List

Kepler JSG48-29PCH/180K

Kepler JSG48-29PCH/180K is in the DOE listing as of Oct 19, 2026. Kepler JSG48-29PCH/180K is in the ENERGY STAR list as of Oct 19, 2026.

  • Gas tankless water heater
  • 1 listed model

Its figures are also listed under Elios EROD180N0000.

Certified figures

Flow at a 67°F rise
5.2gallons per minute
UEF
0.95Uniform energy factor

Flow where you live

A bigger rise from colder incoming water leaves the heater with less flow.

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 5.0 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

Kepler JSG48-29PCH/180K was in the DOE listing by Oct 1, 2026.

Kepler JSG48-29PCH/180K has a recorded ENERGY STAR market-availability date of May 30, 2024. It first appeared in the ENERGY STAR list between July 2024 and September 2024.

Certified figures by listed model

Kepler JSG48-29PCH/180K: certified figures by listed model
Model numberUEFFlow at a 67°F rise (gal/min)Recovery efficiencyDraw pattern
JSG48-29PCH/180K0.955.299%High

UEF is the uniform energy factor. A dash means the model has no such figure.

ENERGY STAR certified models

Kepler JSG48-29PCH/180K: ENERGY STAR certified models
Model numberUEFFlow at a 67°F rise (gal/min)Recovery efficiency
JSG48-29PCH/180K0.965.299%

At a 67°F rise, its flow in the test is 5.2 gallons per minute. The median flow among gas tankless models is 4.8 gallons per minute. Of 487 gas tankless models, 145 have a higher flow than this one.

Its single model number, JSG48-29PCH/180K, is ENERGY STAR certified. In the test, 5% of its energy does not reach the hot water (UEF 0.95). The daily hot water use in the test, called its draw pattern, was high. Of 399 gas tankless models with the same draw pattern, 49 have a higher UEF. On its draw pattern, the median gas tankless UEF is 0.93. When it runs, 99% of the energy it uses reaches the water (its recovery efficiency).

Its test figures match those of 8 other basic models. Of those, one or more are under the Elios and Midea brands. You can find the whole group on the page for the Elios EROD180N0000.

It may qualify for 6 rebate programs in 7 states. Another 2 rebate programs may accept it if it meets their other terms.

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.