wondered if anyone could recommend what additional heating system would be the best way of getting a couple of extra months of swimming out of our pool?
We have a 90K Litre (24K USG) SWG pool, which during the months of July/Aug can maintain a temperature of 27-28C (82F) purely from the heat of the sun, but May and June are cooler, so although the pool begins to climb from around 19C(66F), to maximise swimming use we need to heat it. The same applies to September when the pool begins to cool down.
We do not have mains gas and run the house on electric and oil.
I was thinking a heat exchanger - and if that's correct, how big a unit and what manufacturer would be a good suggestion?