Irish households could knock €115 off their heating bill with a simple energy hack.
Money Saving Expert Martin Lewis has urged homes to check the "flow temperatures" of their boiler. This is the temperature a boiler heats up the water to before sending it to radiators.
Speaking on his Martin Lewis Money Show Live on British channel ITV last night, he explained how boilers should be at 60C - but most are programmed to be much higher, Mirror UK reports.