The answer to this very common asked question is simple.
Its best answered with a question - “Do you wish to heat the pool quickly and simply turn the heating back off of needed, or do you want the pool to stay warm at the desired temperature daily?
If the answer is - Yes i just want to heat it quickly .. ie in a few hours for a party or a weekend and then turn it off to save money on energy bills , then you need a gas heater.
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