It’s unrealistic to expect homeowners to be able to work on their HVAC systems on their own. Some home projects are great for DIY and a nice way to learn a new skill, such as painting a room or pressure washing siding. That being said, when it comes to electrical, plumbing, or HVAC, for safety (and warranty) reasons, it’s best to call the professionals.
Of course, it never hurts a homeowner to know just how their furnace works. After all, they will have to change the filter (sometimes as frequently as every 30 days) and a familiarity with how the system operates helps to know if the furnace is running as it should or if a technician should be called. Being comfortable with the ins and outs of the furnace helps to diagnose problems and zero in on the fix when contacting an HVAC repair company. Some of the basics of the furnace function include: