Tankless Sizing – Total GPM
Buying a tankless system can be a tricky task as there is a number of different units on the market today. In addition you need to take into account numerous different factors to determine the correct sizing and venting. You will first want to figure out what the total GPM that you need supplied at your house, do this to calculate the total. If your showerhead is relatively new, the gallons-per-minute consumption rating is inscribed...
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