Insulation values Whirlpool Cover
A whirlpool cover with 15 cm of insulation offers significantly better thermal insulation than one with 10 cm. This is because the so-called U-value - the value for heat transfer - is lower with thicker covers, which means that less heat escapes from the hot tub.
- A 10 cm thick cover is ideal in warmer environments and for hot tubs that are located in a closed room.
- A 12 cm thick cover is suitable for year-round use, already offers good thermal insulation and contributes to energy efficiency.
- The 15 cm version is ideal for cold winters and particularly high energy efficiency - recommended if the hot tub is located in very cold regions or if the lowest possible energy losses are to be achieved.
|
Cover thickness |
Typical U-value (W/m²K) |
Area of application |
Insulation value/energy efficiency |
|
10 cm |
0,34-0,38 |
Standard, mild winters |
Good (basic insulation) |
|
12 cm |
0,28-0,32 |
Colder regions, efficiency |
Very good (less heat loss) |
|
15 cm |
0,24-0,27 |
Extremely cold, economy mode |
Excellent (maximum) |
What exactly is the U-value?
The U-value (heat transfer coefficient) describes how much heat per square meter of a building component passes through at a temperature difference of 1 Kelvin between warm and cold. The lower the U-value, the better the insulation.
In short:
- It measures the heat loss: Wna if you mean the jetatt per square meter and Kelvin, i.e. W/(m²K).
- It always refers to the entire component (e.g. whirlpool cover), not just the insulation material.
- Low U-value = little heat loss = good insulation and lower heating costs.
- High U-value = high heat loss = poor insulation.
