An easy way to determine whether it's time to change your whole house water filter(s) is…
Commercial replacement of two existing boilers with new Veissmann
The use of an existing well is a possibility but generally not conducive to a proper closed loop installation. The depth of the well and size of casing will be a consideration. Vertical loops are generally drilled by way of a 3' casing to a depth determined by the loop requirement. The well is then filled with a slurry to optimize heat transfer. The number of wells required is calculated as per the heating / cooling load of the home
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Pressure tanks are sized in accordance with your pump specifications just as your pump is specified in accordance with the amount of water your Well makes. When sizing a tank, it is important to determine the ga/min your pump can provide and match that to the draw down capacity of the tank. The idea is to allow your pump to rest for a minute or two as the tank is emptied thereby limiting the wear and tear on your pump.
The most common pump size is 10ga/min. So in order to ensure your pump does not cycle too often, you would require a tank with a draw-down of approx 15 - 20 ga.
