A.M. Fabrications produced bespoke ducting for an interior install of the eco friendly heating system that draws energy from the ambient air outside. Compressing air to heat your radiators and hot water a Viessmann air to water heat pump uses only 2-9kW per hour, making it 2/3 more efficient. A modulator allows the compressor to work less when the outside temperature is warmer. Even when the outside temperature is below zero, the Vitocal 350-A can achieve flow temperatures of 65°C.

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