Consumer champion Which? suggests that Britons could save money on rising energy bills by using a thermal camera to identify heat leaks in their homes. These cameras, which monitor surface temperatures and display them visually, can help pinpoint areas where heat is escaping, such as through gaps around windows, doors, or inadequate insulation. By addressing these heat loss issues, homes can retain warmth more effectively, potentially reducing the need to turn up the thermostat.
Which? researcher Karen Lawrence explained that thermal imaging is particularly useful for finding hidden draughts, poor insulation in lofts and walls, and faulty seals. The cameras work by measuring surface temperatures, showing warmer areas typically in red and colder areas in blue. Common problem areas include windows, doors, and skirting boards.
For those looking to use a thermal camera, Which? recommends borrowing one as the most cost-effective option. Several local councils offer camera loan schemes, and the Library of Things in London provides them for as little as £15 per day. Octopus Energy also has a camera loan program, though it is currently closed until the new year, having previously helped thousands of customers identify ways to save heat. Professional thermal assessments are also available but are considerably more expensive, ranging from around £300 to £750.