Sustainable Heating

Over a third of the UK greenhouse gas emissions can be attributed to heating our built environment. The climate change act 2008 requires the UK to reduce overall CO2 emissions by 80% before 2050.

This will prove to be an impossible task without the full decarbonisation of the UK heating systems.

In order to do this we, at CILS, work with our clients to survey, specify and install technologies to decarbonise and make their heating infrastructure sustainable and cost-efficient.

The choices include:

  1. Air source heat pumps
  2. Ground source heat pumps
  3. Systems integration and smart controls
  4. Estate-wide district heating networks

How do ground/air source heat pumps work?

Ground or air is used as a “source” of initial heat. This is then compressed and the heat generated from the source is used to heat the building.

With both systems, the objective is not to use fossil fuels to generate your heat; instead, using a smaller amount of electricity, allied to what you can extract from the environment, you achieve the same objective with less emissions.

How does it work?

Here is a short video highlighting how ground source pumps work

video highlighting how Ground source pumps work

  • Clean and combustion free, reducing your carbon footprint substantially
  • Excellent efficiencies
  • Can provide passive and active cooling; this saves time, money and space (there is only one system)
  • Long lifespan
  • Intelligent zone controls provide the ability to simultaneously heat one area whilst cooling another (commercial kitchen vs canteen)
  • Integration with smart systems to further enhance efficient energy usage


For both systems, the costs can be substantial. But it should be noted that in most instances there are subsidies and funding opportunities that negate the brunt of the capital required. This leaves you with a long term solution that makes you extremely energy efficient.


Ground source systems require the installation of the piping whilst air source pumps are installed externally, around the building to be heated.

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