Setting your combi boiler flow temperature to between 55 and 60 degrees could save £65, according to Octopus Energy. If 10 million households turned down combi boiler flow temperature to 60°C or below, it could save £1 billion on UK energy bills and 1.7 million tonnes of carbon emissions, Nesta reports. However, it is unknown how many UK households currently have combi boilers set with flow temperatures above 60°C or what percentage could realistically achieve the £65 savings.
Many households across the UK have a combi boiler. A combi boiler is short for combination boiler, heating water and providing central heating from one unit, MoneySuperMarket experts say. Combi boilers are the most widely used type of boiler in the UK and a form of condensing boiler, with advantages including compact size, no separate water tank needed, and energy efficiency.
Set your flow temperature to between 55 and 60 degrees on your combi boiler. Take a look at Nesta's Money-Saving Boiler walkthrough to see how, depending on your boiler, you could save £65.
Lowering flow temperature takes a few minutes and can be changed back instantly. Octopus Energy's energy-saving tips include air drying clothes, draught-proofing, controlling thermostat, setting flow temperature, insulating hot water tank, switching off standby devices, reducing shower time, using LEDs, washing clothes less or at 30°C, and changing shower head. The company claims its 10 energy-saving tips could save £517. It remains unclear how the specific savings amounts for each tip were calculated or what the current adoption rate of these measures is among UK households. Additionally, potential safety or performance risks associated with lowering flow temperature to 55-60°C have not been detailed.
Our 10 energy-saving tips could save you £517.