I have a standard 18x36 IG vinyl lined pool in Central New jersey that we would like to add heating too. I have an east facing roof which does appear to have full sun from 10:00 until 4:00 each day. Without heat I can get our pool up to about 84-86 degrees during July/early August, but it drops into the upper 70's this time of year. What I'm looking to do is get the pool temps a consistent 85+ from early June through mid September.
I have looked at gas heaters which have a relatively low upfront cost but huge operating cost. The heat pumps seem like it would fit the bill but again the ongoing electrical costs is less then ideal. Then I started to explore the roof mounted solar systems where the water is pumped to the roof, trickles through the panels and returns to the pool in what each company explains as a +10 degree or more delta.
Do the solar panels work in New Jersey or are they more suited for warmer climates?
Are there any hidden costs that the vendors forget to mention in the web ads?
I am handy enough to DIY so the systems seem to have a up front cost of about $$2-3k with little to no yearly costs.