How far down is the water? If the pump is lifting the water 150 feet, that's over 60 PSI at the pump just to get the water to the surface. In that case, the energy savings would be small.
If the pump is lifting the water a "short" distance (short relative to 150 feet), then pressure reduction will save money and wear on the pump.
A really nice system would have the main pump set to cycle, say 10 to 25 PSI, with a large pressure tank set for that pressure range to feed the heat pump and a booster pump. The booster pump with its own pressure tank set for the higher pressure would feed the entire house.
|