Alliance Saving Energy: High efficiency boilers
High efficiency boilers
Saving Energy
If everyone in the UK with gas or oil central heating installed a high efficiency condensing boiler with full sets of heating controls, we would save enough energy to heat nearly 1.9 million homes for a whole year and save around 6.7 million tones of CO2.
In a gas heated home, boilers account for around 60% of the carbon dioxide emissions. By simply replacing an old G rated boiler with a new high efficiency condensing boiler and improving your heating controls, you can significantly cut your home's carbon dioxide emissions and could save as much as £235 a year.
The existing lifespan of a boiler is around 15 years and installing an A rated high efficiency condensing boiler with the correct heating controls can make a huge difference to your heating bills over time.
Condensing boilers extract heat from the exhaust gases that would otherwise escape through the flue; in the process they turn water vapour from the gas back into liquid water or condensate. That is why they get their name of condensing because periodically they enter what is called "condensing mode".
A condensing boiler captures a lot more usable heat from its fuel than a non-condensing boiler. The condensing boiler is larger - or sometimes dual. Its heat exchanger design makes possible its high operating efficiency.
The function of the heat exchanger is to make sure that as much heat as possible is transferred from the boiler's burner - and as little as possible lost in gases through the flue.
Regular and Combination are the two types of condensing boiler: Regular condensing boilers heats hot water through a hot water cylinder. Combination condensing boilers gives instant hot water without the need for a cylinder.
Some home heating systems maybe not be compatible with a combination boiler. An Alliance qualified installer will tell you which type of condensing boiler, regular or combination is most suitable for your home.
You can find out if your boiler is G rated by checking the list below. If your boiler is 15 years old or more then it could be a G rated boiler. Alliance advises you to consider replacing an old G rated boiler with a new A rated condensing boiler and a full set of heating controls as this can save up to a quarter on your heating bills straight away and up to 1,300kg of CO2 year. If your boiler is less than 15 years old then it is likely to be more efficient so will save you less if you replace it.
If your boiler is newer, then it may well be in a higher energy efficiency band. On the table below, you will find the typical savings which can be achieved by replacing boilers with new A-rated condensing models and installing a full set of heating controls:
Old Boiler Rating |
Annual Saving (£/yr) |
Annual Saving (kgCO2/yr) |
G ( < 70%) |
£235 |
1,260 |
F (70% - 74%) |
£150 |
800 |
E (74% - 78%) |
£110 |
575 |
D (78% - 82%) |
£70 |
375 |
Remember you can save up to a quarter on your heating bills by replacing your boiler and heating controls
Condensing boilers can be easily fitted to most new and old heating systems. Why not ask us for more details.
Alliance Plumbing and Heating
High Efficiency Boilers
Local high efficiency boiler specialists
We cover London and the Home Counties extensively. This enables us to arrange a visit for you for either today, tomorrow or any time that is convenient.
Free estimates for high efficiency boiler installations
An experienced engineer will visit at a time that suits you. He will provide you with all the help and advice you might need, discussing your options, ensuring you make the right decisions.
Customer service
All our staff from specialist high efficiency boiler engineers to the call centre staff are all regularly appraised based on their performance as determined by you. This helps us to continuously improve the service we provide. If you have not been asked for your feedback, but would like to make a comment please e-mail or give us a ring. We would welcome and appreciate your contribution.
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