We do offer the ThermoDrain in metric sizes 100mm or 75mm drain diameter x 22mm coil for countries that are currently using metric standard pipe sizes. The drain couplings supplied are also metric compatible.
Wagner Solar receives the first-ever certificates for drain water heat recovery Darmstadt. For millions of people, a hot shower in the morning is an essential part of modern life – but it also consumes a lot of energy. In order to contribute to increased efficiency in this area, the Passive House Institute has introduced certification criteria for systems for heat recovery from wastewater. The first certificates to be issued in this context were presented at the International Passive House Conference 2015 in Leipzig. A white paper on the savings potential of drain water heat recovery is available on the online platform Passipedia. Press Release