What is one consequence of maintaining a gas furnace with high humidity?

Maintaining a gas furnace in an environment with high humidity can significantly increase the likelihood of corrosion. High humidity creates a conducive environment for moisture to accumulate, leading to the corrosion of metal components within the furnace, such as the heat exchanger and flue. Over time, this corrosion can deteriorate the integrity of these components, resulting in reduced efficiency, increased maintenance costs, and potentially hazardous conditions such as gas leaks.

The long-term effects of corrosion can also compromise the overall performance of the furnace, leading to more frequent repairs or the need for early replacement. This highlights the importance of managing humidity levels to protect the furnace's lifespan and ensure safe and efficient operation. In contrast, the other options do not accurately reflect what happens in a high humidity environment with regard to gas furnaces.