So they bring out a new thermostat and discontinue the old one without stocking places with the new one. This left me without any heating for a week when my old thermostat broke after only 6 months of use. None of the trade stores had this new thermostat. Only Curry's were able to source me one of the new models and even then I had to get it delivered as they had no stock in store. Extremely bad 'Nest' to do this to the nation.