Gas Heat ESCO Practice Exam

A heat exchanger is a critical component of a natural gas furnace that helps transfer heat from the burning gas to the air that is circulated throughout the home. If a technician determines that a heat exchanger is defective, it is important to inform the homeowner immediately. Out of the given options, it is only safe and responsible for the technician to inform the homeowner and leave the furnace running until further repairs or replacement can be done. Turning off the gas supply or replacing the heat exchanger immediately could pose safety hazards to both the homeowner and the technician. Leaving it running without informing the homeowner could also be dangerous as the faulty heat exchanger may lead to carbon monoxide buildup. It is vital for the homeowner to be aware of the issue and take necessary precautions while the furnace is in operation.