Electric air heater HR series

suspendedfor greenhouse

The new energy-saver heating systems for the horticulture branch: Doll overhead-attached heaters type-series HR novel type blow-out jalousie for a noticeably equal warmth-allocation in the greenhouse. Optionally available blow-out cone for application of a perforated warm-air film tube. high energy prices are demanding efficient heating ­ systems for horticulture. By the use of the paten­t annular gap recuperator these devices are having a German TÜV- approved substantially higher system-efficiency as conventional heating systems. As with this Doll-patent the radiant heat of the combustion chamber, which otherwise turns out to be lost heat, becomes absorbed by the recuperator and is being transformed again into useful heat.