Household energy improvements

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If you want to improve the energy performance of your home, whether it is to reduce energy bills, or carbon emissions, or to make it more comfortable, there is a range of tried and tested technologies that can be applied.

Sustainable energy improvements to properties typically fall into two categories – ‘energy efficiency’, and ‘renewable heat and power’.

Here is a full list of measures which are typically recommended and currently available:

Energy efficiency household-energy-improvements


  • Loft insulation
  • Cavity wall insulation
  • Hard to treat cavity wall insulation
  • External wall insulation
  • Internal wall insulation (including sloping ceiling and roof room insulation)
  • Flat roof insulation
  • Under-floor insulation
  • Hot water cylinder insulation
  • Draught-proofing

Heating systems

  • Efficient gas, oil and electric fuelled heating systems, and boiler replacements
  • Heating controls – thermostatic radiator valves (TRVs), programmers, room thermostats, zoning systems
  • Flue gas heat recovery devices
  • Mechanical ventilation with heat recovery

Windows and doors

  • Double or triple glazing
  • Window refurbishment – such as secondary glazing and draught-proofing
  • High performance external doors

Lighting systems, fittings and controls

Renewable heat and power

Technologies include:

  • Solar photovoltiacs
  • Solar water heating
  • Air, ground and water source heat pumps
  • Biomass boilers and room heaters
  • Micro-combined heat and power
  • Micro-hydro
  • Wind turbines

Other linked services may include:

  • Thermal imaging (to identify cold spots)
  • Air tightness testing (to identify and quantify areas of ventilation heat loss)
  • Wood fuel supplies

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