Even the best furnaces from the most trusted manufacturers in the industry are not going to function with 100% reliability. Furnaces are, like all other heaters, mechanical systems. They suffer wear and tear that will cause problems down the road, even when a routine maintenance schedule is adhered to. Routine maintenance is certainly the best way in which to avoid the need for furnace repair in Cincinnati, OH, but problems are still a matter of when, and not if.
While the majority of heating maintenance tasks do need to be handled by trained professionals exclusively, there is actually one item that you can check off the list yourself. That is changing the air filter in your furnace. Yes, your maintenance technician will do this when tuning up your system. However, this is something that really has to happen more than once a year, so that won’t really cut it. These filters are cheap and easy to replace, so don’t let a dirty filter cause problems for your system.