I decided to go with a heat pump this year to heat my pool. My pool is 20x40 (free form) with a spa with an overflow. I approximate it's about 34,000 gallons. I was deciding originally between Pentair and Aquacal. I decided to go with the Pentair because I couldn't find any major differences between the two and the Pentair is about $1200 cheaper. I'm just trying to confirm if the model I am looking at is the correct one. I am looking at the Pentair ultra temp 140, model 460934. It is their largest one I believe. I have seen it listed at 132,000 btu and 140,000 btu (which is odd). I'm assuming I would just need the one phase. I've been trying to do my research as well as I can. Does the 140 sound like the correct model for my setup and anyone who has it already, any opinions?