Energy Efficient Boilers in Leicester

Rudkin & Herbert are proud to now deliver energy efficient boilers in Leicester, with a range of the most economical boilers in Europe. Our ATAG boilers could save you up to £320 per year on your energy bills and £40 per year on hot water bills (Energy Saving Trust, April 2017).


Some years ago ATAG’s design engineers realised there was untapped residual heat left in the boiler after hot water had been heated. Rather than release this energy as waste, they engineered the Economiser, an environmentally friendly innovation that recycles the flue gases for a second time, resulting in optimum energy efficiency.

How can I save money by using energy-efficient boilers in Leicester?

Household gas bills are commonly £750 – £1,000, depending on property size, age and heating system efficiency. A new A-rated boiler can potentially save you £100s per year, but it depends on the efficiency of your old boiler and more importantly whether your heating system is set up for the new boiler to run at the factory tested 90%+ efficiencies. In the majority of UK homes we find boilers that operate at nearer to 80% efficiency because they are oversized and paired with basic controls (including many ‘smart’ controls if they do not speak the same language as the boiler).

The importance of removing air from the heating system

System cleansing is widely understood to improve efficiencies. When radiators and pipes are filled with sludge and corrosion the boiler has to work so much harder to reach set room temperature, which wastes a lot of energy. The prevailing wisdom is to fit a magnetic filter, which are great for protecting the boiler on an existing system, but they treat the problems of corrosion and not the cause. Corrosion is caused by air in the system, introduced when for example we ‘top up pressure’ (as we are all encouraged to do). A device about the size and cost of a magnetic filter called a dearator will remove air and prevent corrosion in the first instance.

Energy Efficient Boilers in Leicester
Energy Efficient Boilers in Leicester

The importance of a correctly sized boiler

It is common for boilers to be oversized ‘just in case’. Over-sizing however tends to be around 10kW greater than the heat requirement of the property. For example, a standard 3-bed period terrace with double glazing and loft insulation will have a heat requirement of around 6-8kW. Rule of thumb sizing would specify a 15-24kW boiler.

Over-sizing the boiler will lead to it ‘cycling’ on and off. It is the heating equivalent of being stuck in town centre traffic versus cruising along a motorway. Like your car, your boiler will burn more fuel and the components will be put under greater stress, accelerating wear and tear. It will also rarely operate in what is known as ‘condensing mode’ which is when can be 90% efficient. The best guidance we can give is as above: 1) get a boiler with a low minimum output (as per our tables); 2) reduce the maximum output down and 3) pair with a compensation control.

Our professional team of boiler experts are on hand to answer your questions and provide free quotations on all our services. Contact our office in Leicester today for more information…

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