I'm plumbing my own new house and would like to have plenty of water pressure. I plan to use 1" copper after it enters the house and then convert to 3/4" after the manifold to each zone. I'm going to use a Marathon water heater which has the common 3/4" adapters. My question: Is there any point in using the 1" pipe up to the manifold if the hot water has to go through the 3/4" fitting on the water heater anyway?
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Any point in 1" supply if water heater is 3/4"? Page Title Module
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