Project Case Studies

Energy efficiency in an old house

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Before involvement in the Eco n’Home project this householder had already contacted MVE due to concern over their high fuel bills. The house, like many in the area, was built in the early 1900s and possessed low levels of energy efficiency such as poor insulation levels. Although upgrading insulation was not a viable option, MVE was able to make many other suggestions for improvement. Firstly, they made a number of no-cost recommendations such as lowering the thermostat from 22ºC to 19/20ºC, alone reducing gas consumption by almost 30%. Efficiency of the heating system was then vastly improved by the installation of a new condensing boiler and a solar hot water system was installed to reduce CO2 emissions. Furthermore, the householder is replacing all light bulbs with low energy bulbs, switching off electrical appliances when not in use and plans to install double glazing. The householder was able to obtain financial help from tax credits and Montreuil Municipality. So far, annual energy consumption has been reduced from 28,895 kWh to 20,423 kWh; a saving of 30%. This saving is expected to rise to 45% as a result of measures installed at the end of the follow-up year.

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