SEDBUK ratings

What difference can an energy efficient boiler make?

• It produces less CO₂
• It will consume less fuel 
• It can therefore significantly reduce gas heating costs

How is a SEDBUK rating calculated?

SEDBUK refers to the average annual efficiency achieved in typical domestic conditions, and the rating is calculated using:

• The pattern of usage and typical domestic usage patterns
• The UK climate 
• Boiler type
• Ignition
• Fuel used
• Internal store size

Step One:

 A SEDBUK rating firstly assesses what percentage of the fuel that the boiler consumes is converted into heat.

Step Two:

That percentage is then given a rating using a scale from 'A' (at the highest level of efficiency) to 'G'.

It's a way of estimating annual fuel running costs, and all new boilers installed in the UK should be SEDBUK Band A or B except in some specific circumstances.

All the boilers in Baxi's high efficiency range carry a SEDBUK Band A rating and are amongst the most efficient boilers on the UK market.