Patent ID: 7726332

Claim:
A durable water heating system providing rapid hot water delivery, comprising: a water heating unit, said water heating unit connected to a water source and heating water to a designated temperature; at least one hot water line, said hot water line connecting said water heating unit to at least one water delivery fixture; a hot water return line, said return line connecting to said at least one hot water line adjacent one of said at least one water delivery fixtures, said fixture disposed at a greatest distance from said water heating unit, said greatest distance being greater than a distance along said hot water line of any other of said water delivery fixtures from said water heating unit; a flow velocity reduction device, said device having a first end, a second end, an outer surface, a first predetermined length, a first predetermined cross-section, an aperture and at least one barrier surface disposed adjacent at least one of said first and second ends; said aperture extending from said first end to said second end and having a second predetermined cross-section smaller than said first predetermined cross-section for at least a portion of its length; first and second attachment fittings, said fittings disposed adjacent said first and second ends; and whereby, when said flow velocity reduction device is installed as part of said return line, said return line having substantially said first predetermined cross-section, velocity of water circulating through said return line will be substantially reduced, thereby reducing wear on said water heating system while providing rapid hot water delivery at said at least one water delivery fixture.