Yesterday we installed a brand new pool system for the summer season.  These folks used to have an outdated cartridge filter and a undersized pump system. They also wanted pool heat that could heat no matter the outside temp or wind speed.  We put in a 250 lb high rate sand filter powered by a 1.5hp Hayward super pump.  The pool is 27,000 gallons ocean front home in 4×4 country in northern Corolla.  These places get very strong winds and need a larger then normal pool heater.  So we installed a 400,000 btu gas pentair pool heater to combat the elements of the Outer Banks.