The best selling 425 range of electromechanical programmers with its dial and TAPPET arrangement is still the most easily understood solution to central heating and hot water control.

Horstmann's range of advanced ChannelPlus XL programmers is backed by the new 5 year XL deal. This deal includes the H37, the first to offer three independently timed channels: hot water plus two heating zones.

CentaurPlus is a range of simple-to-use electronic central heating programmers with a very competitive price tag. This series of single and two channel central heating programmers offers leading edge microprocessor technology at an affordable price. Designed as a straightforward plug-in replacement for most other models using an industry standard six terminal wall plate, CentaurPlus accepts up to three 'on' and three 'off' commands for each day. Two channel models provide accurate pre-programmable control of both central heating and hot water while single channel versions are ideal for combi boilers.