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Open Greener House- a recently built "passivhaus" home

  • Clifton House Domum Road Winchester, England, SO23 United Kingdom (map)

Clifton House, Domum Road, Winchester, Hampshire, SO23 9NN

Join Winchester Action on Climate Change members for one of three specials events this Heritage Open Days - Talk to the owners about living in this recently built fully certified Passivhaus.

Passivhaus is an international energy performance standard. The definition of Passivhaus is driven by air quality and comfort: "A Passivhaus is a building in which thermal comfort can be achieved solely by post-heating or post-cooling the fresh air flow required for a good indoor air quality, without the need for additional recirculation of air." - Passivhaus Institut. The heat losses of the building are reduced so much that it hardly needs any heating at all. Passive heat sources like the sun, human occupants, household appliances and the heat from the extract air cover a large part of the heating demand. 

The house has MVHR (mechanical ventilation with heat recovery) which provides fresh filtered air into the building whilst retaining most of the energy that has already been used in heating the building. Good insulation, an air-tight membrane, solar water heating and solar panels keep energy use low, while maintaining the house between 18 and 21 degrees C.

Winchester Action on Climate Change (WinACC) is dedicated to combating climate change and inspiring sustainable living. They work collaboratively with residents, businesses and policymakers to cut the carbon footprint of the Winchester District. This is one of three events WinACC members have organised for Heritage Open Days 2019, please see look for 'Open Greener House' on our website for details of the other events.

  • Friday 20 September: 1100-1600

Only 12 people will fit into the house at a time, so to avoid waiting we recommend booking your arrival time. Allow around 30 minutes for your visit. Although please note only 12 people will fit into the house at a time so if there are any overruns from previous visits there may be a short entry delay.