It's about time everyone
saved money off their
heating bills with Chop-Cloc

You could save a lovely 16% off your bills when you install an energy saving Chop-Cloc. A low-cost device that keeps you comfortable whilst reducing energy consumption, so the only difference you will notice is in your wallet!

Take control of your heating bills

Chop Cloc is a new low cost energy saving device that is simple and easy to use.

  • Users save an average of 16%

  • Fully adjustable for maximum savings

  • Fits in less than 1 hour by a qualified electrician

  • Pays for itself in saved energy within 12 months

  • Designed to reduce the overwork of your central heating system

  • Works with most water-based central heating systems

Back Next
  • How Chop-Cloc works

    Chop-Cloc is very simple to use, here is a beginners guide to chopping...

  • Why Chop-Cloc works

    Here comes the science bit.
    Watch this video to find out why Chop-Cloc manages
    to keep you comfortably warm whilst saving you money.

  • How does chopping keep me comfortable?

    You might think that chopping might make you feel cooler but it doesn’t at all

    Heat from the radiators, people and other things still flows into your living room long after your heating is switched off. Chop-Cloc understands this and uses time-based calculations to make sure your heating is back on in time for you to stay comfortable.

  • How Chop-Cloc works

    Chop-Cloc reduces energy use by placing regular periods of off time into your heating system. We call this ‘chopping’.

    Try this quick experiment. Go and switch your central heating off for 20 minutes. Now go and switch it back on. Feel any different? No, you still feel as comfortable as you did 20 minutes ago. The heating is back on before your house has cooled enough for you to notice. You’ve just made a successful chop!

    Chop-Cloc does this every hour automatically and you don’t need to be a scientist to understand that when something is off more it uses less energy.

  • Give your heating a break

    Central heating systems are working too hard, they are designed for very cold weather, which for most of the year, is not the case.

    Unchopped system

    Here is a typical central heating period between 3pm and 9pm. This system is active all the time (but may be temperature controlled by a thermostat).

    Chopped system

    Above we see the same system but with Chop-Cloc installed. There are now regular 30 minute periods of off time added which save energy.

  • The trouble with thermostats

    You may assume that your thermostat is controlling your energy usage perfectly well. It’s better than nothing but it’s not as good as you think it is.

    It’s in the wrong place. Thermostats are often located in a cooler location than the main living space, usually the hall. This means the thermostat calls the heating on earlier and more often than is needed.

    It’s too sensitive. Most thermostats work to plus or minus 0.5 °C. This means, if set at 20 °C it will ask for more heat when it measures 19.5 °C , way before you feel the need for more heat.

    What it measures isn’t a good indicator of your comfort. Thermostats measure air temperature and people don’t get their heat from the air, they get it from radiators, walls and other solid objects, other people and the sun.

  • Information Centre

    This is where you can download useful Chop-Cloc information.
    Just click on each item for a PDF version.

    Chop Cloc User Guide Chop Cloc Fitting Manual

    Electricians: Click here to watch the Chop-Cloc Fitting video on YouTube

The more you chop the more you save

Set it and forget it or adjust with the weather to maximise your savings

When it’s colder outside

Low Chop

15 minutes off and 45 minutes on in one hour

Most of the time...

Medium Chop

30 minutes off and 30 minutes on in one hour

When it’s warmer outside

High Chop

45 minutes off and 15 minutes on in one hour

A low cost device which pays for itself within 12 months

Compare payback with some other energy efficiency measures

Compared with more expensive and disruptive options on offer, Chop-Cloc really is the quickest way to save money on your heating bills. Of course, Chop-Cloc can work alongside these long-term measures for even greater savings.

Back Next
  • Meet the choppers

    Hear from a number of householders who have lived with Chop-Cloc, saved money already and become happy choppers.

  • Chop-Cloc and Social Housing

    Chop-Cloc can make a real difference to social housing tenants and the companies who own the properties. Alistair Cant, Director of Lister Housing Co-operative, Edinburgh, talks about his chopping experiences so far and the first hand savings he has had already with Chop-Cloc.

  • Chop-Cloc and Social Housing

    Peter Armfield from CityWest Homes discusses the challenges facing social housing and why he thinks Chop-Cloc could be part of the solution. Peter is Sustainability Manager for CityWest Homes, the ALMO (Arms Length Management Organisation) for Westminster City Council.

  • The proof is in the heating

    From November 2011 to April 2012, 120 social housing properties belonging to A2Dominion (60 test and 60 control) took part in a wider UK domestic trial of Chop-Cloc. Results were analysed and produced by the Scottish Institute of Sustainable Technology and published in July 2012. Here are the results...

  • What can Chop-Cloc do for you?

    Chopping can help in lots of ways whoever you are

  • Our people

    Chop-Cloc is an innovative idea which is not only time based but timely in its appearance on the market. Mark Kerray and Garry Felgate explain why...

  • Our people

    Mark Kerray

    Linkedin profile

    Chief Executive Officer

    Dr Garry Felgate

    Linkedin profile

    Policy and External Affairs Director

    Garry Stewart

    Linkedin profile

    Chief Technology Officer and Founder

    Dr. Graeme Sweeney

    Linkedin profile

    Executive Chairman

    Jonny Lang

    Linkedin profile

    Creative Director

  • Our company

    Chop-Cloc Limited is an innovative Scottish energy efficiency company that takes a different approach to heating control.

    We believe that people need new, easier to use, easier to understand, easier to fit, more affordable and more effective ways of reducing their energy demand. Chop-Cloc, it’s about time.

    Where to find and contact us