central heating thermostats

[malc]

i want to replace my stander thermostat with a programable one i have seen one that will fit the bill and heatmiser Programmable Thermostat with Hot Water Output - Heatmiser PRT/HW, the problem is it just sounds to easy, has anyone ever done this if so are there any problems i may come across,
the heating system and boiler are only 8 months old, but the firm that fit them no longer running.

thanks for any help
malcolm

[pops91710]

Are you talking about forced air heating? Or radiator heat? T-stats are very simple to install. It is programming them that can get dicey.