According to managing director Leigh Stimpson, Energy Technique is now a very different beast focused on the heating and ventilation industry. It restructured last June, when a consortium led by Ofex-listed London & Boston Investments invested £1.1m in return for shares. Having sold loss-making businesses, the board turned its attention to the highly profitable 'Diffusion arm', where clients include blue-chips such as The Savoy Hotel, Claridges, Marks & Spencer and Land Securities. December's interims to September were encouraging, with the continuing business warming sales 16% to £6.43m and profits 88% to £229,000. Diffusion's core business is the manufacture of fan coils and convector heaters. Agreements have been signed for the distribution of Panasonic UK's air-conditioning products, and rumour had it that a deal with Nutech Canada for the exclusive distribution of high-efficiency room filters is imminent. Also significant, given recent fears over anthrax, is the mooted formation of a joint venture company to manufacture a 'patented air filter' that kills pathogens. The group restored profititability for the first time in seven years in 2001 and is expected to be in profit when it announces its results in May. London & Boston Investments has a 21.4% stake, and chairman Stephen Komlosy a non-executive role on the board. The group is a good bet for those that favour recovery plays.