I'm looking for a bit of advice. Last summer we installed a natural gas heater onto our above ground pool. We really loved the heater and we kept our pool nice and warm with a water temperature in the upper 80's. Now I had expected to have a really high gas bill as a result of that luxury, but the gas bill really wasn't very big at all last summer. What did go up sky high though was our electric bill. To keep water running through the heater, we ended up running our pool pump a whole lot more than we had the previous summer, and I am sure that is what drove our electric bill so high.
So now I have been thinking, would running a 2 speed pump on the low setting keep water moving enough through the heater to keep the heater running a much as we like? Would the low-speed setting offer a significant savings in electrical usage? Am I going to have to make any wiring changes to convert over to a 2 speed pump? We had 2 separate 120v GFCI circuits trenched out to the pool last summer, one dedicated to the pump and the other dedicated to the ignition on the heater. I'm worried though that a 2 speed pump is going to require something bigger? Any advice on what model of pump might best fit our needs? We have a 24' x 48" round AGP with a Hayward H100 heater and a Hayward sand filter system.
Any and all advice is appreciated!