Efficiency calculator

If you're looking to reduce your heating bills then use Baxi's boiler efficiency calculator to help you.

Step 1 - Your new boiler

Choose the boiler you would like to compare your current model against, and we'll let you know how much you can save!

If you're not sure which new boiler is right for you, try our 'Find a boiler' tool.

Combi boilers

System boilers

Heat only boilers

EcoBlue + Combi
EcoBlue Advance Combi
Platinum Combi HE A
Duo-tec Combi HE A
EcoBlue System
Megaflo System HE A
EcoBlue Heat
EcoBlue Advance Heat
Solo HE A
Bermuda BBU HE Boiler
Baxi 100
Baxi 200
Baxi 400
Baxi 600
Baxi 200
Baxi 400
Baxi 600 System
Baxi 600 Heat

Step 2 - Your current boiler

Do you know the efficiency rating of your boiler? Select from the options below.

Step 3 - Pilot light

Does your current boiler have a permanent light?

Step 4 - Your boiler age

Select from the options below:

Less than 7 years old
Between 7 and 10 years old
More than 10 years old

Your potential savings...

Cost savings (per year)




This is an average figure - if you look at the SEDBUK database you can get the exact efficiency of your boiler.

Find an installer