The ClearFire Economizer (ECF) is ideally suited for applications utilizing the horizontal (ClearFire-H) or vertical (ClearFire-V) boiler 10-60 HP units. Gains in efficency can reach 3-5% depending on the feedwater return temperature. The Integral economizer is available for low pressure CFH applications or the external economizer can be used in high pressure CFH or CFV needs. Features Minimal footprint316 SS tubing316 SS casing construction for the external economizer modelUp to 87% efficiencyVirtually maintenance free