


They are also most likely to be under costly repairs in just a few years. Inferior brands would have materials that easily break down after several maintenance checks and cleaning. Cheap materials: You can easily notice a bad furnace construction with the components or materials that it comes with.In this case, you must know the red flags that point to a lemon, unreliable furnace brand. It is one thing to deal with furnace cleaning and another thing to deal with bad furnace brands entirely so it is imperative that you could identify the furnace brands to avoid early on. What red flags help you identify furnace brands to avoid?
