Ok, I tried to modify the title of my original post, but it would not take.
You have all guided me and I'm in agreement that electric makes the most sense, for our situation. I looked at the Hayward Easytemp, but the manual does not give AMP infomation. It says 220V, but the manaul says to read the plate on the unit to get AMPs, so here are some questions:
1 - What AMP breaker is required, 40AMP?
2 - The breaker for my 15AMP pool pump is 40AMP, can I simply run an outlet to the same breaker? (They will obviously run concurrently, so I want to make sure the draw isn't too high. Obviously question 1 plays a role here).
3 -Aside from the eletrcial requirements, I assume a block or concrete pad, hoses, T or shutoff valves, what else is required?
4 - for my pool, what BTU takes me to the point of diminishing return? In other words, higher BTU, usually means less run time. But at some point, too much BTU is almost overkill. So, what, is 50,000 BTUs enough for my 7,500 gallon pool?
5 - Bypass? It says a bypass is required for any pump over 3/4HP. Can you explain why? I assumed it had something to with the chlorine gas buildup, but how does the size of the pool pump factor in to that??
6 - Any other suggestions on the install, Make/Model, etc.? Where to purchase?