2. Electrical shock: Furnaces also use electricity to power the blower fan and other components. If you come into contact with any live electrical wires while working on your furnace, you could suffer a severe electrical shock.
3. Burns: The surfaces of a furnace can get very hot, especially around the burner assembly. If you accidentally touch one of these hot surfaces, you could suffer serious burns.
4. Carbon monoxide poisoning: Furnaces produce carbon monoxide as a byproduct of combustion. If there's a problem with the furnace's venting system, carbon monoxide can leak into your home and cause carbon monoxide poisoning. Carbon monoxide is a colorless, odorless gas that can be fatal if inhaled.
5. Voiding your warranty: Many furnaces come with a manufacturer's warranty. If you attempt to repair your furnace yourself and damage it, you may void the warranty and be responsible for the cost of repairs.
In addition to these safety risks, doing furnace repair yourself can also be more difficult and time-consuming than you might think. If you're not sure what you're doing, it's best to err on the side of caution and call a qualified HVAC technician.
