First a pump with a 40/60 pressure switch has to have a max head of 138’ just to shut itself off. Then depending on where it is installed, it may have to make up the other 27’ of head as well, for a total of 165’ of head. So you need a pump that will do about 200’ of head at shut off.
Most of the electronic tankless devices use flow off and pressure on, without any control of the pressure. So you have max pressure from the pump all the time, and need to be careful of the pump you choose, or you have too much or too little pressure. These devices also do not use a pressure tank. So every time you use a tiny amount of water the pump has to start. This is not that bad until you have a small leak somewhere, and the pump cycles itself to death in a day or two.
The Cycle Stop Valve regulates constant pressure to the house, works with a small pressure tank for leaks and small usage, and has no electronics to fail.
But if you want the most efficient system, get a really big pressure tank, so the pump is always running at its most efficient point. With the amount of usage you have, a big tank will probably save you $1 or $2 per month on the electric bill. Efficiency is not as important with small water systems as how long the equipment last. Cycling on and off is what shortens the life and kills most pumps. A Cycle Stop Valve with a small tank, more than offsets its cost compared to a big pressure tank. Eliminating the cycling extends the life of your pump system, and gives you constant pressure in the house. There is more to efficiency than what is on the electric bill.





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