John Wood T-H3M-DV-N 1**
John Wood T-H3M-DV-N 1** is in the DOE listing as of Oct 19, 2026.
- Gas tankless water heater
- 1 listed model
Not listed as ENERGY STAR certified on Oct 19, 2026.
Its figures are also listed under A. O. Smith T-H3M-DV-N 1**.
Certified figures
- Flow at a 67°F rise
- 3.3gallons per minute
- UEF
- 0.90Uniform energy factor
Your fixtures at once
Change your hour and flowFlow where you live
Colder incoming water needs a bigger rise, so the heater gives 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 3.2 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.
Certified figures by listed model
| Model number | UEF | Flow at a 67°F rise (gal/min) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|
| JWT-140H-P 1*1 | 0.90 | 3.3 | 94% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It heats 3.3 gallons per minute of water by 67°F in the test. The median gas tankless model heats 4.8 gallons per minute by 67°F. Of 487 gas tankless models, 451 have a higher flow than this one.
As of Oct 19, 2026, it was not listed as ENERGY STAR certified. In tests, 90% of the energy went to hot water, so its UEF is 0.90. Its test ran at the medium level of daily hot water use. Of 77 gas tankless models with the same draw pattern, 8 have a higher UEF. For its type and draw pattern, the UEF runs from 0.81 to 0.97. Of the energy it spends heating water, 94% ends up in it (its recovery efficiency).
All of its test figures are shared by 6 other basic models. Each of them is listed under a different brand. For the full group, see the A. O. Smith T-H3M-DV-N 1** page.
In 2 states, 2 rebate programs may accept it. Another 2 programs may accept it if it meets their other terms.
Also listed as
They carry every figure in the table above.
Rebates
| Program | State | Status | Program page |
|---|---|---|---|
| SoCalGas High-Efficiency or ENERGY STAR Certified Natural Gas Tankless Water Heaters rebate | CA | May qualify if it meets the other terms | Its own page |
| Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless) | MN | May qualify | Its own page |
| PSE&G Tankless Water Heaters | NJ | May qualify | Its own page |
| Focus on Energy (gas tankless) | WI | May qualify if it meets the other terms | Its own page |
Programs change their terms. Check the program's own page before you buy.
- Every John Wood basic model
- Every gas tankless water heater certified below 4.0 gallons per minute
- Every gas tankless water heater
- The most-searched gas tankless models side by side
Not covered
- Advertised figures. We have none on file for this model.