How to Maintain the efficiency of your boiler.

Our focus will shift to our boilers and heating our homes as the winter season approaches. Because of the present energy crisis, it is more crucial than ever to make sure your boiler is operating at its peak efficiency so you can heat your home as effectively as possible. 

Here are five ideas to keep in mind to ensure your boiler operates at its peak throughout the year. 

Get it serviced first.

One of the most crucial things you can do is to have your boiler serviced at least once a year, regardless of whether you currently have a high efficiency condensing boiler or an older boiler. This will guarantee long-term effectiveness and seamless operation. Regular boiler maintenance will help you spot problems early and avoid expensive repairs down the road rather than waiting for something to go wrong and paying premium costs for boiler repairs. A boiler service typically ranges in price from £60 to £1001, but if you have boiler insurance, it’s worth checking because some businesses that offer boiler insurance also include an annual service.

  1. Verify the temperature of the boiler flow

One of the most important things you can do to make sure your condensing combi boiler is operating efficiently is to check the flow temperature. The temperature that your boiler boils water to before distributing it to the radiators around your house is known as the boiler flow temperature. People frequently overlook this and the thermostat may be set at a temperature that is too high because the flow temperature differs from the thermostat setting.

Your gas expenditures could be cut by up to 8%2 and your carbon emissions decreased just by checking and perhaps lowering the flow temperature, without affecting the heat in your house.

We advise asking an engineer to verify the flow temperature for you so they can give you advice on the appropriate temperature to set it at if you’re unsure how to accomplish this or what to set the temperature at.  

Your home should still feel warm after lowering the flow temperature, which will depend on the size of your radiators, how well it is insulated, and the temperature set in your thermostat. The radiators won’t feel nearly as hot to the touch because the system will be running a little cooler, which is the only difference you’ll notice.  

We encourage you to obtain additional advice if you have a health concern before thinking about lowering your boiler’s flow temperature. 

  1. Add a jacket for insulation

If your boiler has a water tank, installing an insulation jacket might result in annual energy cost savings of about £1553. By lowering the amount of heat that may escape through your system’s walls, a jacket, which costs about £174, increases system efficiency. As a result, the water in the tank maintains its heat for a longer amount of time, requiring less gas to re-heat the water as you use it.

Improvements to the controls

The efficiency of your boiler can be increased by making sure you have the best controls for it. A boiler thermostat, a timer or program, a room thermostat, and thermostatic radiator valves should all be part of your system controls. (TRVs).

You may configure your system to switch off automatically when you leave the house or when you go to bed by employing a programmer. In addition, you may make adjustments from anywhere with your smartphone, computer, or tablet by using smart heating controls like Bosch EasyControl. Numerous intelligent thermostats can learn from your routines and change the temperature on their own, making energy conservation even simpler.

  1. Improve the boiler.

By evaluating how much fuel is transformed into utilized energy, boiler efficiency ratings are determined in the UK. (and not wasted). All current gas boilers are condensing boilers, which are more fuel-efficient because they can recover more heat and absorb energy from condensed water vapour5.

Before the winter weather arrives, if you don’t already have a condensing boiler, now is a wonderful time to think about switching to one that is more energy-efficient. Condensing boilers not only use less energy but also cost less to operate; depending on the boiler you now have, you might save up to £3806 annually by replacing it.

So, whether you’re thinking about getting a new boiler or you’re satisfied with the energy efficiency and functionality of your current boiler, now is the perfect moment to give it some much-needed TLC.

Learn about the newest boiler offers from E.ON and how we can assist you in selecting the ideal model for your house. Visit E.ON’s Heat Hub, our dedicated boiler pages, if you have any questions concerning your boiler to find the solutions. 

  1. Boiler service-cost provides cost information.
  1. The Heating Hub: By lowering the “flow” temperature, you can cut your gas costs by up to 8%.
  2. Energy Saving Trust: Insulating radiators, tanks, pipes, and homes. Savings data based on a semi-detached, gas-heated home for boilers in the UK
  3. Energy Saving Trust: Insulating tanks, pipes, and radiators in homes
  4. Energy Saving Trust: boiler replacement and home energy efficiency
  5. Energy Saving Trust: Savings based on replacing a semi-detached home’s G-rated boiler with a new A-rated condensing boiler for energy efficiency. 


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