Langley Marsh new build

New build completed in 2015, which is near Passivhaus standard.

This home is exceptionally airtight with fresh air supplied by a mechanical ventilation with heat recovery (MVHR) unit. Vents remove used wet air from kitchen, bathrooms and utility to the MVHR. Heat is recovered in the unit (there is a temperature cut out in summer) and passed to the fresh air coming in.

The property achieves a high thermal performance from solar gain and insulation, which includes triple glazing, wall, roof and underfloor insulation and high performance external doors.

There is underfloor heating with the small amount of heat required supplied by a gas boiler and LED lighting throughout. Solar PV panels generate electricity, which also helps to heat hot water using a SOLIC device to pass electricity directly to the immersion heater if the water temperature drops and the PVs are making electricity.

Stone and brick were recycled from the previous property on the site. Water from the well is used to water the garden.

A source of inspiration was The Passivhaus Handbook by Janet Cotterell and Adam Dadeby.


The architect was Geoff Sellick, Architectural and Interior Design (Dartmouth, Devon).

The builders for the insulated timber frame were Richardson and Peat, based in Bedfordshire, who place an emphasis  on energy, efficiency and sustainability through passive principles and Passivhaus Construction.

The Energy Consultant was Phil Neve of Aaben (All About The Built Environment) near Bristol, who has work regularly with Richardson and Peat and are specialist consultants and assessors for Passivhaus, low energy and sustainable building.

Triple glazed windows and doors, aluminium clad timber windows, Argon filled from Norrsken Co Ltd, Poole.

MVHR (Mechanical Ventilation Heat Recovery) ducting system and air intake/output unit, a SAVE VTR 300/B by Systemair, Oxfordshire.

12kw Condensing Gas Boiler – Vaillant ecotec plus 612.

Solar PV panels with micro inverters and SOLIC unit by Thompson Ellis, Hampshire.

Wood Burning stove – Morso S11, 4kW output, installed by Exmoor Stoves.

A community group wanting to lower carbon levels and look after our planet.

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