I'm in the process of starting my build. My pump and filter will be Pentair. My pool is around 13,600 gallons. I'm thinking of buying a gas heater. My PB said it would be around $1800 for the heater. I have found Pentair Mastertemps 125K BTU gas heaters for around $1000 online.
Should I stay away from buying online??
If not, then would that size heater be enough?
And, to get the extended 3 year warranty on equipment.....does it all have to be ordered through the pool builder? I'm assuming so....