Energy Saving Upgrades

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Added floor insulation, upgraded loft insulation. New A Rated boiler. Installed MVHR ventilation. Doubled size of all radiators. Additional insulation to pipework under suspended floor. 20 Tube Thermal Solar Panel with 150 litres hot water tank.
Images Graphs Figures Description Strategies Building

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CO2 emissionsPrimary energy requirement
Energy target
2002 Building Regs

Energy and fuel use

Fuel use by type
Primary energy requirement
CO2 emissions

Measured data from renewable generation is not yet available.

Fuel use

Electricity use 3900 kWh/yr - 3535 kWh/yr
Natural gas use16000 kWh/yr - 7625 kWh/yr
Oil use- - -
LPG use- - -
Wood use- - -
Other Fuel - - -
Primary energy requirement 331 kWh/m².yr - 207 kWh/m².yr
Annual CO₂ emissions 66 kg CO₂/m².yr - 43 kg CO₂/m².yr
Annual space heat demand - - -

Renewable energy

Electricity generationForecastMeasured
Renewables Technology--
Other Renewables Tech--
Electricity consumed by generation -10 kWh/yr
Primary energy requirement
offset by renewable generation
-207 kWh/m².yr
Annual CO₂ emissions
offset by renewable generation
-43 kg CO₂/m².yr

Calculation and targets

Whole house energy calculation method SAP
Other whole house calculation method-
Energy target 2002 Building Regs
Other energy targets-
Forecast heating load -


Pre-development air permeability test--
Final air permeability test--

Project description

Start date16 May 2010
Occupation date
Location Stonehaven Grampian  Scotland
Build typeRefurbishment
Building sectorPrivate Residential
Property typeDetached
Construction typeMasonry Cavity
Other construction type
Party wall construction
Floor area 85
Floor area calculation method Approximate Floor Area
Building certification

Project Team

Project lead person
Landlord or Client
Mechanical & electrical consultant
Energy consultant
Structural engineer
Quantity surveyor

Design strategies

Planned occupancy
Space heating strategy
Water heating strategyGas Boiler & Solar Thermal
Fuel strategy
Renewable energy strategy
Passive Solar strategy
Space cooling strategy
Daylighting strategy
Ventilation strategyMVHR
Airtightness strategy
Strategy for minimising thermal bridges None
Modelling strategy
Insulation strategy
Other relevant retrofit strategies
Contextual information

Building services

Space heatingSEDBUK A-rated mains gas condensing boiler. Located in utility room
Hot watergas boiler & solar thermal
VentilationMVHR Vent Axia 95% heat recovery. inlets in each bedreeom and 2 in living room. 1 extract in kitchen, 1 in bathroom. All solid PVC ducting.
Controlshoneywell room thermostat - living room. other radiators on thermostat. 3 set points for MVHR
Cookinggas hob, electric oven
Lighting100% compact fluorescent
AppliancesA+ Rated fridge, freezer and washing machine to each unit
Renewable energy generation system
Strategy for minimising thermal bridgesNone

Building construction

Storeys 1
Volume 210
Thermal fabric area -
Roof description
Roof U-value -
Walls description
Walls U-value -
Party walls description
Party walls U-value -
Floor description
Floor U-value -
Glazed doors description
Glazed doors U-value - -
Opaque doors description
Opaque doors U-value - -
Windows description
Windows U-value - -
Windows energy transmittance (G-value) -
Windows light transmittance -
Rooflights description
Rooflights light transmittance -
Rooflights U-value -