When a problem comes up with a newer furnace, there are a few things you can probably pin the issue on. Unfortunately, new furnaces often run into problems because they were not properly installed. Incorrect sizing or sloppy installation lead to long-term and short-term issues within the system, likely causing an early breakdown. However, most problems with a newer furnace have to do with a smaller issue, like a small wiring issue or even a dirty filter.
But older furnaces are a different story. Problems that come up with an older furnace are often the result of a long history of wear and tear on the system, and the issues can be complex. That’s why you should always contact qualified technicians when you need furnace repair!