Consumers have been warned that homes with poor insulation could face hefty bills from energy suppliers.
According to consultants Faithful and Gould, current freezing temperatures could push up the prices of gas and electricity bills if proper insulation is not installed in the home to conserve more heat.
The firm said the cold snap during the winter period may have cost UK consumers an extra £1.2 billion in wasted heat.
Faithful and Gould pointed out that the average poorly-insulated three bedroom semi-detached house will see their energy costs increase by around £37 during the cold snap.
Energy management expert Ellie Horwitch-Smith said: "As outside temperatures fall, inefficient buildings perform increasingly badly as heating systems struggle to maintain indoor temperatures."
She added that the imminent introduction of the Carbon Reduction Commitment Energy Efficiency scheme will allow firms to improve their business energy performance.
According to the Energy Saving Trust, the average household could save around £115 a year by installing cavity wall insulation.
If you want to find out more about your energy options and how you could save up to £378 in minutes, click here.