True or False: A heat exchanger on a forced air furnace can be repaired if the welder is certified by TSSA.

The statement is true because, under specific circumstances, a certified welder can perform repairs on a heat exchanger. The Technical Standards and Safety Authority (TSSA) governs the operation and safety of various heating and cooling appliances, including forced air furnaces. A certified welder possesses the necessary skills and qualifications to ensure that any repair made is safe and compliant with relevant codes and regulations.

While many repairs on heat exchangers might require replacement rather than just welding, the option for a certified welder to carry out repairs does exist, provided that the repairs are performed according to TSSA guidelines and regulations. This flexibility allows for the possibility of some heat exchanger repairs instead of complete replacements, which can be beneficial for both safety and cost-effectiveness.

Other options such as repairs only being acceptable under warranty or by licensed contractors reflect the regulatory environment and warranty limitations, but they do not negate the truth of the initial statement regarding certified welders.