Why Does My Furnace Have Rust On It?

Even though furnaces don’t have water running through them to run, they still do rust. When you do see rust on your furnace, it is typically a sign that something needs to be repaired or replaced so pay close attention to it. There’s a few reasons why furnaces rust, here’s a few of them. Water still comes in contact with your furnace through return air ducts. In times of high humidity water and moisture can gather in the ducts and possibly enter the furnace area. When you have ducts that have openings in them that pull moist air from other rooms it ends up in the furnace. Having your ducts repaired can lessen this. When you have an HVAC system where the AC sits on top of the furnace and the AC leaks onto your furnace, it will cause it to rust. The AC can leak due to a drain being clogged so the condensation cant drain properly. One last thing that can cause rust to form on your furnace is combustion gas reaction. Combustion gas turns into liquid vapor which can cause rust if your furnace isn’t ventilated properly. When you spot rust on your furnace, you should call a professional like the ones at Bartlett Heating and Air to come inspect it. We will be able to tell you what the issue is and help you decide whether to repair or replace. Call Bartlett Heating and Air today!