Rowan View is a passivhaus-certified single-family house on the outskirts of Southwell, Nottinghamshire. The house is on an elevated site with the living spaces on the upper floor to utilise views across the local townscape and countryside. It is a detached two-storey, four-bedroom dwelling.

The upper floor comprises a 77sqm open plan space with library, living, dining and kitchen zones plus a separate WC. The 96sqm lower floor contains four bedrooms, two bathrooms, a second kitchen, plant room and storage space. A separate building provides a double garage and workshop.

Passive measures to control solar gains include external venetian blinds on the two principal first floor windows and deep window reveals to reduce summer overheating, while allowing beneficial solar gains in the winter months. Additional environmental measures include rainwater harvesting for garden irrigation and solar PV.

MECHANICAL SYSTEM

• Ventilation: Genvex , ECO 375 aka NIBE ERS 10-500
  Ventilation for supply and extract air
  Heat recovery
• Heating installation: Air Source Heat Pump 6kW NIBE F2040. NIBE SMO20 controller. Zone thermostats. UFH in ground floor slab.
• Domestic hot water: Hot Water Cylinder NIBE ‘Mega Coil’ 200ltr unvented heat pump hot water cylinder.
• Ecological aspects: 3,500 litre underground rainwater harvesting tank linked to roof drainage for garden irrigation.

PHPP VALUES

• Climate: Cool, temperate
• Air tightness n50 = 0.34/h
• Annual heating demand 21 kWh /(m2a ) calculated according to PHPP
• Heating load 10 W/m2
• PE demand (non-renewable Primary Energy) 109 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP
• PER demand (renewable Primary Energy) 47 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP
• Generation of renewable energy 16 kWh /(m2a ) based on the projected area

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