Compared across 8 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Airthereal 14kW is a wall-mounted electric tankless water heater that heats water only as it flows, so there is no tank to run cold. It needs a 240V circuit and draws about 58A at full output, which is enough for a single shower or a sink in warm climates but not for a whole house running several fixtures at once. It is small and simple compared with a tank heater, and its digital panel sets the outlet temperature directly. Few owners have reviewed it, and the early ratings are positive, but the main trade-off is the heavy electrical circuit it requires.
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Lowest price we've seen: $139.99 on Nov 9 at Airthereal; highest $199.99 on Nov 13. Tracked across 8 stores since Nov 9.
Only a handful of buyers have rated it, and those few give it top marks. They describe it as doing what a small tankless unit should, with no reports yet on long-term reliability.
| KW | Inlet Temp (°F) | GPM | Approx Usage | Outlet Temperature (°F) |
|---|---|---|---|---|
| 6.5 | 41 | 0.7 | Low Flow Faucet | 104 |
| 6.5 | 50 | 0.8 | ||
| 6.5 | 59 | 0.9 | ||
| 6.5 | 68 | 1.2 | Bathroom Faucet | |
| 6.5 | 77 | 1.5 | Kitchen Faucet | |
| 8 | 108 | 1.0 | ||
| 8 | 1.3 | |||
| 8 | 1.6 | |||
| 9 | 2.0 | Shower | ||
| 14 | 1.4 | |||
| 14 | 1.9 | |||
| 14 | 2.3 |
The Airthereal Electric Tankless Water Heater is a 14 kW, 240-volt unit that supplies hot water on demand. It does not preheat or store water, so the supply does not run out.
It mounts on the wall and uses 90% less space than a traditional tank water heater. Self-modulating temperature technology heats water only while it is in use.
The temperature is set on a digital panel. Protections include high temperature protection, dry heating protection and electrical leakage protection.
