Solahart 181BTC Free Heat
Solahart 181BTC Free Heat is in the ENERGY STAR list as of Oct 26, 2026.
- Solar water heater
- 1 listed model
No certified figures were found under this model number. Units made for another brand are often certified under that brand's basic model.
ENERGY STAR certified models
| Model number |
|---|
| 181BTC Free Heat |
There is one model number for it, and that one is ENERGY STAR certified. None of the 55 solar models, this one included, has a UEF.
Its test simulated a day of very small hot water use (its draw pattern).
On a quote, look for 181BTC Free Heat. The brand name on this heater is Solahart. This brand has 8 basic models across all types.
Not covered
- Advertised figures. We have none on file for this model.