First Published: January 4, 2019. Updated: October 17, 2023
Energy Efficient Combi Boilers
Don’t take our word for it. That’s according to the UK’s Energy Saving Trust.
Here, we’ll give you the best, most factual information on how energy efficient combi boilers can help you save money, and an unbiased review of which brands have the most energy efficient combi boilers in the UK in 2023 and beyond.
Quick jump links…
- Benefits of a new condensing boiler
- How can energy efficient combi boilers save you money
- Most energy efficient boilers in the UK in 2023
- Why Get Energy Efficient Combi Boilers Installed by Boilerhut
Benefits of a New Condensing Boiler
According to the Energy Saving Trust, “If everyone in the UK with Mains Gas, LPG 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 tonnes of CO2.”
How do Condensing Boilers Work?
If your existing boiler is more than 17-20 years old, it is not a condensing boiler.
An older, non-condensing boiler wastes heat in the form of hot gases that escape into the atmosphere via a flue out of your house. If it’s a horizontal flue, it goes out through a back or side wall. If it’s a vertical flue, the hot gasses escape through the chimney or roof.
A condensing boiler recycles those hot gasses through the primary heat exchanger and uses it to reheat the returning water from your radiators. This means the burner won’t have to work as hard, saving you money by saving energy.
The diagram below explains it in more detail:
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