Optimising your boiler temperature

The ideal temperature setting for the central heating system on a Worcester Bosch boiler is typically between 50 and 70 degrees Celsius, depending on the specific model and application.

It is typically advised to set the temperature between 60 and 65 degrees for comfort and energy efficiency. This is usually set on the boiler by adjusting the dials on the front panel or the buttons on a modern digital display.

For most condensing boilers, efficient condensation occurs at around 54 to 57 degrees Celsius.

Seeing steam out your flue is a good thing due to the above.

If your boiler is set too high, it will not condense efficiently.

Utilising your radiators

TRV’s (Thermostatic radiator valves) are an excellent addition to your radiators and these allow you to change the temperatures quickly an easily.

The numbers on the radiator valves represent these temperatures;

0 = Off.
* = 7°C.
1 = 10°C.
2 = 15°C.
3 = 20°C.
4 = 25°C.
5 = 30°C

When the room drops below these temperatures the TRV will allow hot water to flow into the radiator.

TRV’s do not make the radiator warmer or cooler, they shut the flow of water on/off. Understanding this helps when setting up the boiler.

Using your room thermostats

Set your room thermostats to your lowest comfortable temperature and if possible, use a programmed thermostat to schedule the on/off times for the central heating, doing this will avoid heating the home when its empty.

Try 19-21 degrees C as a starting point in the living room.

Upgrade to a Smart thermostat

The Worcester Easy Control Smart Thermostat can take into consideration the outside temperature and adjust your boiler heating output to be more efficient.

Weather compensation controls are available, to work in the same way as a smart thermostat, if you are using a different/standard room thermostat.

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Top tips for your radiators

Your radiator is a great indicator for when your central heating system can be more efficient.

Too Hot

If you can’t keep your hand on the radiator, due to being too hot, turn the boiler temperature setting down. This will also get rid of the overwhelming heat, when your boiler is on and the heating temperature is set too high.