m²·°C/W
square meter Celsius per watt
Areal thermal resistanceexact by definition
The square meter Celsius per watt is exactly equal to RSI, the SI R-value, since a Celsius degree of difference is a kelvin. It is a label variant, not a different unit, and appears on European and Canadian product data interchangeably with m²·K/W.
| 1 m²·°C/W | 1 RSI (m²·K/W) |
Solvers that use areal thermal resistance