How to set a timer on a boiler.

Learn how to manage your boiler programme for more control over your home heating.

Setting a boiler timer.

Your boiler timer controls when your regular or system boiler turns on and off in order to provide hot water and central heating. Depending on the age of your boiler, it will have one of two heating controls built in. Modern boilers have electronic digital boiler timers, whilst older boilers may have a mechanical timer that needs to be set manually using a dial.

Benefits of setting a boiler timer.

Take control of your energy use by tailoring your heating and hot water to fit your lifestyle. Scheduling a timer allows you to be more energy efficient at home, ensuring you have a cosy home when you need it, and saving you energy when you’re out and about. Learn more about boiler efficiency.

Going on holiday? Simply turn down the temperature or choose the frost setting to avoid wasting energy whilst you’re away - helping you save on your energy bills.

For even smarter home heating, try getting a smart thermostat. It can adapt precisely to your lifestyle, knowing when the house is empty and turning the heating off for you automatically. Learn more about the benefits of a smart thermostat.

How to set a timer on a boiler?

Set a digital boiler timer.

Digital timers vary with each boiler model, but they follow the same basic principles for use. Our instructions are for the Greenstar Comfort Control range, but should be similar to most modern boilers.

  1. Enter the main menu, selecting the ‘Time programme’ option within ‘Heating’ or ‘Hot water’.

  2. Select which days of the week you want to programme. You can set different timers on different days - such as for weekdays and weekends.

  3. Set the on and off time in the menu and confirm. You may have the option to do this two or three times for a more precise schedule.

  4. Press the ‘Select’ button on the control panel to toggle between the different programmes until you reach the ‘Auto’ option.

Set a mechanical boiler timer.

Mechanical timers need to be set by hand using the dial, which usually has a 24 hour clock surrounded by pins to mark each 15 minutes.

  1. Adjust the clock using the central dial to match the current time.

  2. Switch in the pins for when you want your boiler to be on - make sure they are switched in to match the entire duration you want it running.

  3. Change your boiler setting to its timer option to start the programme.

What do the different boiler timer settings mean?

On/24hrs. Your central heating is on and will remain on until you change it.

Off. Your central heating is off and will remain off until you change it.

All day/Once. Set an ‘on’ and ‘off’ time. Your heating will turn on when specified and remain on until scheduled to turn ‘off’.

Auto/Twice. Your heating will turn on and off at multiple scheduled times within 24 hours (e.g in the morning and again in the evening).

Advance. This will begin the next scheduled on/off programme immediately, or end the current one.

Boost/+1hr. Your central heating or hot water will come on for an hour, without affecting any other programming.

Get warm and cosy and save up to £475 on your annual gas bill^.

Plus if you’re an E.ON Next customer save £150 when you buy a boiler through E.ON. T&Cs apply.

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^An average household could save up to £475 on their annual gas bill. Savings information for boilers in the UK provided by the Energy Saving Trust, based on a detached house with a boiler rating of G.