Thanks so much for your post - It lead me to buying one of these pool heaters- i should be getting it shortly - i had a question about the clearance from the back of your heater to the building - i read in the manual 5-6 feet - your picture didn't look like there was that much clearance needed. Thanks in advance for your info.
Let us know what you think, I too have WSP and Warm Water Solution pool heaters on my radar. Will pull the trigger one day.
heater arrived and it is great - it's been so hot i haven't really had to heat pool water - although i did make a small fire just to see it work. I was easily able to raise the temp 1 degree per hour.