Heating makes up 60% of your energy use every year so it’s important to make sure you have the right boiler. The big advantage is that energy efficient boilers are all condensing boilers which have a larger heat exchanger, so it recovers more heat. All boilers lose efficiency over time, but these maintain performance for much longer. That said, you should be wary about what you read. Many articles suggest you can make enormous savings with a newer boiler, but this assumes you’re swapping out the least efficient older boiler with the most efficient new boiler. Here are a few boilers that have been proven to retain their efficiency for the longest period.
On the surface, all boilers look and sound the same. But there is a myriad of differences under the skin. It can be a complicated and overwhelming decision and is not something you take lightly or in a rush. Check our guide to buying a new boiler
Energy Efficient Boilers
Baxi EcoBlue + Combi
As the EcoBlue+ is very compact, it does not require as much installation space as other boilers in its class. It delivers great heating and hot water flow rates and with it you get:
- Covers24, 28, 33 kW outputs
- Full wall mounting jig
- Choice of flue lengths
- Range of plug in timers
- Front access to all parts
- 1 metre lead provided
- Compatible with uSense smart control using the 230v switch live
Vaillant ecoTEC pro
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Another very popular boiler manufacturer in the UK, Vaillant are known for making very user-friendly energy efficient boilers that are simple to use.
- Covers 24,28 and 30kW heating outputs
- A flow rate of up to 12.3 litres per min for fast instant hot water
- ErP A rated for both hot water and heating efficiency
- Dimensions in mm (825 model): H 720 x W 440 x D 338
Worcester Greenstar i System (9kW – 24kW)+
This is a combination boiler that has a very reasonable output of 24kW, making it most suitable for small to medium households and properties. With the Worcester-Bosch Greenstar 24i, you get:
- Low energy pump reduces electrical usage
- Large Condensesure style siphon built into the boiler – eliminates frost risk
Viessmann Vitodens 100-W
Viessmann are at the forefront of exciting new heating technologies and deserve the extra energy efficiency leaf and the top spot. One quick look at their range and you will see what we’re talking about. Reliability is a key word when it comes to energy efficient boilers, as I am sure you will agree. The last thing you want is investing in an expensive boiler (and boilers are one of the highest ticket appliances you are likely to buy in your life) only for it to be break down because of a fault with its design or construction. Some of the major benefits of investing in a Viessmann Vitodens 100-W are:
- Rated outputs: 13 kW, 16 kW, 19 kW, 26 kW and 35 kW
- Compact dimensions to fit in standard kitchen cupboards
- Energy efficiency class: A
- Standard efficiency up to 97% through stainless steel Inox-Radial heat exchanger
- Weather compensation option