Click on the links below for more information about how we've calculated the potential savings mentioned in our Interactive House.
Loft insulation
The cost savings shown are based on a 1940’s 3 bed semi detached home with a ten year old gas boiler and a gas price of 3.73 p/kWh. More modern homes save less. Your individual savings depend on a large number of factors and the saving quoted should be treated as a guide. Also experience tells us that many customers like to have a warmer home, making it more comfortable. This reduces the saving. But even allowing for this, both forms of insulation are a worth-while investment. Savings are for top up from 50mm to the recommended level of 270mm.
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Double glazing
The figures are based on CO2 saving from the Energy Savings Trust (EST) figures changing single to double B rated for 3 bed semi and assuming a gas price of 3.73p/kWh..
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Cavity wall insulation
The cost savings shown are based on a 1940’s 3 bed semi detached home with a ten year old gas boiler and a gas price of 3.73 p/kWh. More modern homes save less. Your individual savings depend on a large number of factors and the saving quoted should be treated as a guide. Also experience tells us that many customers like to have a warmer home, making it more comfortable. This reduces the saving. But even allowing for this, both forms of insulation are a worth-while investment.
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Rotary clothes dryer
Energy saving is based on a 25% reduction in the average annual tumble dryer usage by letting clothes dry naturally, and uses an electricity rate of 12.938 p/kWh.
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Solar Panels
The energy and CO2 savings are based on the Energy Savings Trust (EST) figures for a 3.4 m2 solar hot water panel on a 3 bed semi house, using a gas unit rate of 3.73 p/kWh.
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Energy saving light bulbs
Savings are based on four hours use per day of a low energy lamp of 11 W replacing 60 W light bulb, and an electricity cost of 12.938 p/kWh (including VAT).
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Television and Home Entertainment
Energy savings based on switching off home entertainment equipment (set top boxes, DVDs, games, TV etc) rather than leaving them on standby when the attached television is not in use . This assumes the television is used 4.1 hours per day at an electricity unit rate of 12.938 p/kWh.
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Thermostat
The 10% per 1oC energy saving is based on the Energy Savings Trust (EST) carbon saving figures as of 16/08/11, and using a gas unit rate of 3.73 p/kWh.
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Radiator reflectors
Energy saving figures are based on Ofgem CERT savings for RadFlek radiator reflector 2.16 m2. Using a gas unit rate of 3.73 p/kWh
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Eco Kettle
The energy saving is based on a typical use equivalent to 10 cups per day (0.3 litres per cup) and an electricity unit rate of 12.938 p/kWh.
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PowerDown
The energy saving is based on a range of separately powered computer peripherals such as monitor, printer, scanner, modem etc that are switched off when the computer is not in use. The figures assume the computer is used for 3.11 hours per day and an electricity unit rate of 12.938 p/kWh per unit.
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Energy Monitor
The energy savings are based on Department of Energy and Climate Change CO2 figures for real time display that can save up to 3.5% of electricity used in the home and an electricity unit rate of 10.086p/kWh.
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Towel radiator
Energy saving based on a 30 day per year reduction in use of a 100W electric towel rail, and uses an electricity unit rate of 10.086 p/kWh.
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Shower
Energy saving is based on using a shower daily using 35 litres of water, instead of a daily bath using 73 litres of water. This assumes a boiler operating at 90% efficiency and a gas unit rate of 3.73 p/kWh.
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Bath
Energy saving is based on a an electric immersion heater that is switched off when going on a 2 week holiday with a foam insulated cylinder with heat loss of 1.3 kWh per 24 hours and an electricity unit rate of 12.938 p/kWh.
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Hot Water Tank Jacket
Based on Ofgem CERT saving a gas unit cost of 3.73 p/kWh.
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‘A’ rated tumble dryer
Energy saving based on an A rated tumble dryer replacing a C rated tumble dryer and an electricity unit cost of 12.938 p/kWh.
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Boiler
Based on the Energy Savings Trust (EST) CO2 savings for replacing an old G rated inefficient boiler with a new A rated efficient condensing gas boiler (including new controls) and using a gas unit rate of 3.73 p/kWh.
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Clothes horse
Energy saving is based on a 25% reduction in the average annual tumble dryer usage by letting clothes dry naturally, and uses an electricity unit rate of 10.086 p/kWh.
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Cat-flap/draft insulation
Based on Ofgem CO2 saving for a 3 bedroom semidetached house, and a gas unit rate of 3.73 p/kWh.
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Luminaire - Table Lamp and Pink Fluffi
Saving is based on 4 hours use per day of a 10W energy saving luminaire instead of a 40W standard bulb, and uses an electricity unit cost of 10.086p/kWh.
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TRV
Figures based on the Ofgem CERT saving for gas central heated home (assuming 7 radiators, all controlled by thermostatic radiator valves), and a gas unit rate of 3.73 p/kWh.
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Energy Saving Recommended Dishwasher
Replacing an old inefficient model with a new Energy Saving Recommended dishwasher can save up to 22%, source the Energy Savings Trust (EST) using an electricity unit rate of 12.938 p/kWh.
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Energy Saving Recommended Fridge-Freezer
Replacing an old inefficient model with a new Energy Saving Recommended fridge freezer can save up to 60%, source the Energy Savings Trust (EST) using electricity unit rate of 12.938p/kWh.
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Energy Saving Recommended Washing Machine
Savings based on upgrading to an A+ rated washing machine from an A rated washing machine and electricity unit rate of 12.938 p/kWh.
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