FRESH from its success at lifting a major business award for innovation, a Hail Weston security specialist has developed a system that could save small firms and householders hundreds or thousands of pounds a year on the increasingly-costly heating bills. Tensor plc is a security specialist that won The Hunts Post Huntingdonshire Innovation of the Year Award 2008 barely two weeks ago for a system that can recognise fingerprints even when hands are grimed with oil or dust. Now its boffins have applied the same technology to office and domestic heating systems by cracking an algorithm that computes buildings' thermal behaviour against their heating needs. Put simply, the system learns how quickly a building - and individual rooms within it - can reach the temperature the occupants want to live or work in. Then it can either be told precisely when the rooms are needed or detect human presence and react accordingly. So offices that are deserted at weekends remain colder, as do rooms unused during all or any part of the working week. But they are still at the necessary temperature when necessary. The cost of installing the HeatingSave system can be recovered in as little as six months or, for larger premises that already have efficient heating systems that shut down at weekends, 18 months, Tensor chairman Nigel Smith told The Hunts Post.