Carbon steel is a standard option for many HVAC systems due to its excellent structural integrity, making it durable under various mechanical pressures. Additionally, it is lighter than other materials, often making it easier to maneuver and install. Given its high thermal conductivity, carbon steel adjusts quickly to temperature changes and effectively maintains elevated temperatures. It is also easily accessible and less expensive, making it optimal for projects with time or budget constraints. However, carbon steel requires more maintenance, and exposure to certain elements can cause corrosion or rust. So, if it is not maintained correctly, carbon steel has a shortened lifespan.

When a fabrication shop uses carbon and stainless steel, it is crucial to maintain the integrity of stainless steel by changing out all the tools (grinders, wires, brushes, etc.) when switching between materials. This practice prevents remaining carbon steel particles from embedding into the stainless steel, which can cause it to rust. This is important because any rust or corrosion in the system can lead to performance issues and potentially costly repairs. American Wheatley sends stainless steel tanks out for bead blasting—a surface treatment that eliminates contaminants and gives the tank a smoother aesthetic. This ensures that the stainless steel composition will remain unblemished.