Heat recovery devices designed to heat air before another process with the primary objective of increasing the thermal efficiency of the process. The offered devices are used to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas. Made from finest quality mild steel steel, these devices are used in various areas such as boilers, industrial furnace units and in hot-air ventilation systems. Design of the devices depend on the temperature conditions of the application. We are offering two types of heat recovery devices- Air preheater and water preheater.