How do I size a heat pump suitable for my pool?
It is important to size a heat pump correctly to suit your
pool and your swimming requirements.
The first step is to calculate your pool volume in m3. We also recommend factoring in an additional 10% to give you some leeway and ensure sizing is correct.
e.g. Length x Width x Average Depth = X +10%
Example: 10m x 5m x 1.5m = 75m3 + 10% = 84m3
Now you know your pool volume we can look at selecting the correct size pump.
Each range of heat pumps has a specification table and it is the ”Pool Volume m3” that is most important as shown in the table below:
You will see that the pool volume m3 listed above has 2 figures provided. Lets take the P26X for example which states 75-130 m3
The lowest figure given (75m3) is giving us the maximum pool size this unit can heat for “all season”.
The highest figure given (130m3) is giving us the maximum pool size this unit can heat in IDEAL summer conditions (27 degrees air temp / 27 degrees water temp)
We do not use the highest figure as the duration of time during the year when we get these conditions is minimal. So we look at the halfway point between the lowest & highest figures which gives us the maximum pool volume for a standard summer season (April – sept)
Lets use the example of the 84m3 pool we have shown above.
For an “All Season” heat pump the P26X model in the table is not big enough. The max pool volume for “all season is only 75m3 so we will need to go for a larger unit.
For a summer season model (Apr – Sept) the P26X has a halfway point of 102.5m3. So this unit has the capacity you require.