Agas Services Ltd


Cost and savings if you was to fit a condensing boiler it could cut your fuel bills

Boilers account for around 60% of the carbon dioxide emissions in a gas heated home. By replacing an old G-rated boiler with a new high efficiency condensing boiler and improving your heating controls, you will significantly cut your home's carbon dioxide emissions - saving as much as £225 a year.

The current lifespan of a boiler is around 12 years. Fitting an A-rated high efficiency condensing boiler with the correct heating and hot water controls can make a huge difference to your heating bills over time.

Better return than a bank account!

The amount you could save on your fuel bills in a year represents a far better return on your money than a similar amount invested in a typical low interest bank or building society savings account

Choosing the right boiler for you

There’s a Worcester boiler to suit every need. We can advise which one is right for the needs of your household and the size of your home. We can also advise you on choosing timers and thermostats to help optimise your fuel efficiency.

Check out the chart below for the average saving you can make by replacing your old boiler.

Click on the Icons below for more information


A typical layout of a combi boiler and it's benefits

A combi boiler provides heating and hot water directly from the boiler.

Here’s an example of a central heating and hot water system layout using a combi boiler:

Combi boiler layoutEnlarge image

A combi (or combination) boiler is an ingenious space-saving idea, and an increasingly popular choice in UK homes. In fact, combis now account for well over half of all the new domestic boilers installed in Britain every year.

A combi boiler is both a high-efficiency water heater and a central heating boiler, combined (hence the name) within one compact unit. Therefore, no separate hot water cylinder is required, offering space saving within the property.

Further benefits of a combi boiler are significant savings on hot water costs and the fact that hot water is delivered through your taps or shower at mains pressure. So you can enjoy powerful showering* without the need for a pump.

Another combi boiler benefit is that it can generally save you money on installation time and costs, since no tank in the roof space means less pipe work and a shorter installation time.


What is SEDBUK?

SEDBUK efficiency grading chartThe SEDBUK rating was developed under the UK Government’s ‘energy efficiency best practice programme’ with the co-operation of boiler manufacturers, including Worcester. It provides a basis for fair comparison of different models of boilers.

The SEDBUK rating is the average annual efficiency achieved in typical domestic situations. It takes into account sensible assumptions about climate, control, pattern of usage and other similar factors.

The rating is calculated from laboratory tests together with other important factors such as boiler type, fuel used, ignition type, UK climate, boiler water content and typical domestic usage patterns. So, for estimating annual fuel running costs SEDBUK is a better guide than laboratory test results alone.

The boiler’s performance is scored, enabling the boiler to be placed in a banding system using a scale from ‘A’ to ‘G’. ‘A’ rated boilers are the most efficient. 

If you are looking to upgrade your heating system or boiler to a more cost efficient one, or having a new system installed then we can help you make the right choices. From a combi, system, or regular boilers we can install them for you. Please contact us via telephone or email we look forward to hearing from you.      


Old Boiler Rating

Annual Saving (£/yr)

Annual Saving (kgCO2/yr)

G ( < 70%)



F (70% - 74%)



E (74% - 78%)



D (78% - 82%)



 We have employed Agas regularly for servicing our boiler over the past five years and most recently we have had a new boiler fitted and had the system powerflushed.  Agas have always been 100% reliable, trusted and extremely helpful - their approach is both friendly and professional and I wish all tradespeople were like them! I would readily recommend Agas to anyone considering employing them.

Jenny Wales, happy customer.