Our heat pump sizing guide shows the ‘ideal’ capacity needed to achieve a target pool temperature of 27-28°C consistently. When calculating this ‘ideal’ capacity we considered types of pool, insulation (inc. covers), swimming season and average air temperatures.
It is important to remember that the heating capacity required to achieve a consistent temperature of 27-28°C will vary according to air temperature and heat loss. You will need far less capacity to heat the same size pool in the height of Summer than you do at the start or end of the season.
We have assumed an average air temperature of 15°C across the season, bear in mind that the capacities you see quoted elsewhere are probably based on a higher average air temperature and therefore would not meet your actual heating requirements.
Pools are outdoors and covered with suitable solar or bubble cover when not in use
May to September swimming season
Average air temperature is 15°C
Desired water temperature is 27-28°C
Indoor pools / year round outdoor heating – please fill in our sizing form or speak to one of our sales team for a sizing quote
Ponds are outdoors, insulated and covered
Holding temperature 15°C in Winter / 20-22°C in Summer
Above-ground pools with a cover but no additional insulation are classed as ‘uninsulated’
In-ground pools with a cover, above ground pools that have been partially sunk into the ground or above ground pools with cover and additional side/base insulation are classed as ‘insulated’
Pool Volume (L) |
Ideal Capacity (kW) |
|---|---|
<10,000 |
6kW |
10-12,000 |
7kW |
13-15,000 |
10kW |
15-20,000 |
13kW |
20-30,000 |
15kW |
30-40,000 |
18kW |
40-50,000 |
23kW |
50-60,000 |
26kW |
Pool Volume (L) |
Ideal Capacity (kW) |
|---|---|
<15,000 |
6kW |
15-20,000 |
8kW |
20-30,000 |
10kW |
30-40,000 |
13kW |
40-50,000 |
15kW |
50-60,000 |
18kW |
70-80,000 |
20kW |
80-90,000 |
23kW |
90-100,000 |
26kW |
100-110,000 |
29kW |
110-120,000 |
32kW |
Pond Volume (L) |
Ideal Capacity (kW) |
|---|---|
<9,000 |
9kW |
9-12,000 |
12kW |
12-15,000 |
15kW |
15-19,000 |
19kW |
19-27,000 |
27kW |
>27,000 |
Please call |
To reach a higher pool water temperature you should look to increase capacity by approximately 2KW for each degree you want to raise the temperature above 27-28°C
If
Then
To extend your swimming season to start in April and end in October, you need approx. 3kW extra per month, so 6kW extra in total – if in doubt please contact our sales team for advice
If
Then
If you are looking for year round heating of an outdoor or indoor pool, or would like to start your outdoor season before April or end after October you should ALWAYS contact us for a sizing quote, simply adding 3kW per extra month will not give you sufficient capacity beyond April/October due to increasingly lower air temperatures and increased heat loss.
If you have an indoor pool, would like to heat year round, or would simply prefer us to size the heat pump required to heat your pool or pond, please complete the form below and we’ll be in touch shortly.
The more information you can provide, the more accurate our recommendation.
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