The Butler Corporation offers The Butler Maximum Heat Exchange System!
by The Butler Corporation
The Butler Maximum Heat Exchange System's revolutionary design allows the Butler System to operate at water temperatures up to 240F* without compromising the simplicity, quality and reliability that has distinguished the Butler System since 1980.
The Butler Maximum Heat Exchange System captures heat from the van's engine coolant and vacuum/blower exhaust without bypassing water or adding any other controls or fluids. The Butler Maximum Heat Exchange System is offered as an option on new Butler Systems.
*Water temperatures can exceed 250F.