Patent ID: 8661674

Claim:
A method for repairing a heat exchanger of a furnace, the heat exchanger having a cracked pipe, comprising: a) providing a heat exchanger repair kit; b) the repair kit comprising at least one repair pipe having two ends; c) the at least one repair pipe comprising at least one arced repair pipe having one straight end and one arced end; d) locating at least one crack in a section of the cracked pipe, wherein the cracked pipe includes at least one cracked arced pipe section; e) removing the cracked section from the cracked pipe, wherein the cracked section being removed includes at least one cracked arced pipe section; f) determining a combination of at least two of the at least one repair pipe for replacing the removed cracked section, wherein the combination of the at least two repair pipes would be of a sufficient length, shape and strength to replace the removed cracked section; g) assembling the combination of the at least two repair pipes on-site of the furnace to form a combined repair pipe, wherein at least one repair pipe in the combined repair pipe is an arced pipe section; and h) replacing the removed cracked section with the combined repair pipe.