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sustainability


“Since its introduction, the Code for


Sustainable Homes has accelerated the move towards micro-CHP and, in view of the


changes to Part L1 2010, this technology will


prove an increasingly important option”


With the emphasis on heat pumps, solar panels and the like, the days of the humble boiler may seem to be numbered. In reality, boiler manufacturers are embracing ‘green’ thinking and developing systems and products which provide both energy and cost savings, cut CO2 emissions, save water, increase flow rates and can work in conjunction with renewable technologies. At the most basic level the accent is on the fact that simply specifying the correct boiler for the needs of a home and installing a suitable control system dramatically influences both emissions and energy use. What is also clear is that last year’s changes to Part L of the Building Regulations have further paved the way for improved heating efficiency. “Quite aside from the fact that all new boilers are SEDBUK A-rated, there are boilers on the market that can work with solar thermal systems and combination boilers that can handle the hot water needs of a large family home,” points out Catherine Earl, marketing manager at Alpha Heating Innovation. Recovering energy that would otherwise be lost is a crucial factor in making boilers more efficient and flue gas recovery units are now increasingly specified. One company that has pioneered these is Ravenheat. When fitted between a gas boiler and the flue, its Energycatcher passive flue gas heat recovery system recycles the latent heat gases normally expelled into the atmosphere through the flue, and uses them to preheat the incoming water for hot water use. “The Energycatcher raises the efficiency levels of a SEDBUK ‘A’ rated boiler from 91 per cent to 97 per cent and can deliver savings of up to seven per cent off a households gas bills,” says Ravenheat’s managing director, Louis Pickersgill. Simon Osborne, specification channel manager at


BDR Thermea (formerly Baxi Group), emphasises the benefits flue gas recovery technologies can bring when designing for the Code for Sustainable Homes. “Listed under SAP Appendix Q, they can make a significant contribution for those specifiers seeking to achieve the energy saving targets required on their schemes which will meet Levels 3 and 4 of the Code.” BDR Thermea offers its own Multifit GasSaver and,


40| July 2011 showhouse


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