Is it true that the gas code allows for the repair of a damaged heat exchanger in a dwelling?

The correct answer is that it is false that the gas code allows for the repair of a damaged heat exchanger in a dwelling. Gas codes are stringent to ensure safety for occupants and to minimize risks associated with gas appliances. A damaged heat exchanger can lead to dangerous situations, including the possibility of carbon monoxide leaks or decreased efficiency of the heating system.

Generally, gas codes require that damaged components like heat exchangers be replaced rather than repaired. This ensures that all parts of the heating system maintain their original safety standards and operate effectively. Replacing a damaged heat exchanger is crucial for maintaining the integrity and safety of the entire heating appliance.

The options discussing conditions like needing special permission or depending on the extent of the damage do not align with the core safety principles outlined in gas codes. Such stipulations would still not permit a repair under normal circumstances, since the overall safety and reliability of the heating system must be prioritized.