Eccotemp i12
The Eccotemp i12 is the design-forward compact of the range: an 80,000 BTU/h, up to 4.0 GPM indoor non-condensing tankless behind a black tempered-glass front with a touchscreen that shows output temperature and live GPM. It shares the 0.7 GPM low-flow ignition of its bigger siblings and runs on a standard 120V cord that powers the exhaust fan, display, and control board. Eccotemp positions it for smaller single-family homes, apartments, condos, and cabins — one to two fixtures at a time.
With an 80,000 BTU burner it comfortably runs a single shower plus a sink in warm climates, dropping toward one fixture in the cold. It's non-condensing (~79% efficiency), so it's inexpensive to buy and needs no condensate drain, but uses more gas per gallon than a condensing unit and must be vented. Like the rest of the line it's certified to 2,000 feet and not recommended above 5,000. Its ~4.1-star rating is a touch better than the larger 45HI — owners like the looks, the compact footprint, and the clear touchscreen for the price.
Key Features
Best Use Cases
Our Verdict
A good-looking, compact indoor propane unit for apartments, condos, cabins, and small homes that need one-to-two fixtures. The tempered-glass touchscreen and low-flow ignition are nice touches at the price. Non-condensing efficiency and the 2,000-foot elevation limit are the trade-offs; size it to a small load and it satisfies.
What owners report
Themes summarized from verified-purchase reviews across major retailers (4.1★ average, 152 ratings). These are aggregated owner opinions — not our own bench testing.
Owners like the black tempered-glass front and the touchscreen that shows temperature and live flow — a step above utilitarian budget units.
Reviewers in apartments, condos, and cabins find it a tidy, capable fit for one-to-two fixtures.
Satisfaction tracks with sizing it to a small home; pushed to multiple simultaneous fixtures it falls short.
The 120V cord and indoor venting are install requirements owners should plan for, along with the 2,000-foot elevation limit.
Eccotemp i12 FAQ
How many fixtures can the i12 handle?+
About one to two at a time. It delivers up to 4.0 GPM with warm inlet water — a shower plus a sink in mild climates — and roughly one fixture in the cold.
Is it condensing?+
No — it's non-condensing at around 79% efficiency. No condensate drain, but it needs venting and uses more gas per gallon than a condensing unit.
Does it need electricity?+
Yes — a standard 120V cord powers the exhaust fan, touchscreen display, and control board.
How is it different from the 45HI?+
The i12 is smaller and more stylish (80,000 BTU, 4.0 GPM, touchscreen) for one-to-two fixtures; the 45HI is a higher-capacity 150,000 BTU / 6.8 GPM whole-home unit.
Sources
Price range from leading retailers
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