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I have been living in this house more than 20 years before I started the retrofit. I am self employed and have a PhD in Technology Policy and a City and Guilds in energy awareness.
We all have to drive down our fossil fuels as far as possible and as fast as possible to combat climate change. This was reinforced by the tornado that hit our street in 2005 which was just one example of how extreme weather events are already increasing. I have the personal carbon emissions we are all meant to have by 2050 – so I’m 40 years ahead. When it comes to my house, I thought it was pointless to pay for and waste that amount of gas. Similarly why would you not invest in PV on the roof, it was the best investment I could make and I’ve also doubled the value of the house.
This Victorian end of terrace 2 bed house was built in 1884. I liked the fact that the house had lots of windows and many facing south, so they let in a lot of natural light. However, the downside to this was that there was a tremendous amount of heat loss through the windows and also the solid walls. The house gained heat easily but also lost it easily, so it was very hard to heat in cold weather, resulting in poor comfort levels. One specific problem was that the end wall was beginning to move and crack, therefore I needed to do physical work to the house. It made sense to do the retrofit at the same time as this work and I was not going to do it without adding energy efficiency measures.
After insulating the solid walls and installing double glazed windows, I had PV panels installed on the roof to generate my own electricity. Other energy saving changes included a new condensing boiler and low energy appliances and lights.
The new measures I had installed have halved my gas consumption and have also halved my water consumption. It has probably halved my electricity consumption too as I am now producing twice as much electricity as I consume in a year with my PV panels.
The property now holds heat very well; the retrofit drastically changed the heat loss characteristics of the house. It is now easy to maintain the house at a comfortable temperature – which was the whole point of all of this.
I enjoyed turning the house into a power station – seeing the sun shinning outside and seeing the electricity flowing in to the local grid and displacing the coal generated electricity that other people have to consume.
Yes. The passive ventilation with heat recovery is working fine. I feel the house is fresher and drier already, with no condensation on the window, despite my drying off clothes indoors. I will never have to open a window again and it should ventilate and cool in summer. Ventive have one various awards.