Research has revealed that three-quarters of children in Devon are facing cold bedtimes this winter.
The study, carried out by home heating experts SpeedComfort, found that 75 per cent of parents are worried their children will be cold at home when temperatures drop.
Almost two-fifths of Devon residents (38 per cent) cannot keep their house warm, regardless of their efforts.
As a result, 75 per cent of parents admit they have had to put their children to bed in a cold room, and 49 per cent worry about the impact of the cold on their family's health.
The research shows that Brits expect their homes to drop to an average of 12.8°C this winter, which is significantly below the World Health Organisation's recommended minimum safe temperature of 16°C for infants.
Wouter Heuterman, CEO of SpeedComfort, said: "With the cost-of-living crisis continuing to affect so many families across Devon, it’s heartbreaking to see that so many residents are worried about keeping their families safe and warm at home this winter.
"The cold has a huge impact on how we feel both physically and emotionally.
"For families with children and vulnerable people, the impact of cold temperatures is even further exacerbated."
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