LOCHINVAR ATM-140M-N 1** vs TECNOLOVE JSLG44-26VE1(2"): which uses less energy?
At the high draw pattern the LOCHINVAR ATM-140M-N 1** uses 178 therms a year and the TECNOLOVE JSLG44-26VE1(2") 184 — 6 therms (3%) less, about 58 therms over ten years. Both are filed as a gas tankless unit, so the comparison holds. Enter your ZIP below to price the difference.
Side by side
Compared within one class only: models filed as a gas tankless unit at the high draw pattern.
| Figure | LOCHINVAR ATM-140M-N 1** | TECNOLOVE JSLG44-26VE1(2") |
|---|---|---|
| UEF (Uniform Energy Factor) | 0.95 (better) | 0.92 |
| Energy use per year (therms) | 178 (better) | 184 |
| Max flow (GPM) | 4.1 | 4.1 |
| Installed cost range | $2,358–$3,405 | $2,216–$3,239 |
| ENERGY STAR certified | yes | not matched |
| On the market since | 2026-08-28 | not filed |
What it costs to run
Reliability
Not published: Reliability, failure rates and each model’s actual warranty term.
The registries these figures come from certify energy performance under a federal test; none of them records how long a unit lasts or how often it fails, so this page does not rank the two on reliability.
What is here instead:
- The filed efficiency, capacity and tank size of both models, side by side below.
- The actual warranty term is printed in each model’s documentation, not in any registry.
Which should you pick?
- Pick the LOCHINVAR ATM-140M-N 1** if running cost matters most: it uses 6 therms less a year on the same test.
- Pick the TECNOLOVE JSLG44-26VE1(2") if the installed price matters more than the running cost: its modeled installed range is $2,216–$3,239 against $2,358–$3,405.
- Neither if you need more than 4.1 GPM at the same time — neither unit lists more. Check how to size a tankless unit by GPM.
Each model on its own
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LOCHINVAR ATM-140M-N 1**
Its filed figures, class position and running cost on your ZIP.
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TECNOLOVE JSLG44-26VE1(2")
Its filed figures, class position and running cost on your ZIP.