When installed properly, an air heater should have a long service life. However there are many common, yet easily avoidable, pitfalls that can cause problems and shorten the expected lifespan.
Hose or Piping
Air is normally supplied to the heater from a blower connected by either flexible hose or hard piping. When making this connection the pressure drop from the blower to the heater must be considered. As the pressure drop increases, the output flow from the blower will be reduced. The following are some best practices to keep in mind:
After exiting the air heater the air temperature immediately begins dropping with distance travelled. To be sure the heater is working efficiently it should be placed as close as possible to the target without restricting the outlet. Restricting the outlet can lead to reduced flow and potentially damage the heater.
Thermocouples are not used in all applications but when applicable there are some rules of thumb regarding placement: