Quote is for replacing the heat exchanger, flame retainer, inducer support, exhaust regulator and gaskets in the Carrier package unit serial 2016G50579. Price includes the factory replacement parts, shipping and labor. Repairs covered by a one year parts and labor warranty. Parts are available from the factory with a 3 week estimated lead time. Customer is responsible for removing the enclosure on the gas line side of the unit for access to the unit for repairs.