Looking at putting our heater in. When I built my pool a few months back we had the pad area poured to accommodate a heater, but didn't install since it was hot outside and wouldn't be using the heater. We used the saved money to upgrade our plaster. Looking at the Pentair master temp 400K BTU. It's a lot cheaper online than what my PB is selling for. My concern is warranty problems if I buy online. Just wanted to see if you guys had any other ideas to get a good price and keep the manufacturers warranty. Also is there anything i need to tell them specifically for install? I also have a Pentair ET8. Thanks In advance!