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The discussion around whether it's more cost-effective to leave your heating on all day has been addressed by money-saving expert Martin Lewis. On the ITV show This Morning, he shared insights into this commonly debated topic.

He elaborated on the principle of energy efficiency, stating, "You pay to pump energy in as and when is needed, and to keep pumping it in constantly isn't efficient. Using a timer's best, because your thermostat is designed to turn your heating on and off to keep your home at the temperature you set it at. So in general I'd stick with that."

As the temperatures drop, many are debating when to start heating their homes. Martin Lewis appeared on This Morning and provided clarity on the issue

He explained the rationale, noting: "You pay to pump energy in as and when is needed, and to keep pumping it in constantly isn't efficient. Using a timer's best, because your thermostat is designed to turn your heating on and off to keep your home at the temperature you set it at. So in general I'd stick with that."

Martin Lewis has waded in to the debate on whether it is more cost-effective to keep the heating on all day or not. Money Saving Expert Mr Lewis discussed the topic during an appearance on ITV's This Morning.