Hi, We have a Hive Thermostat control for our heating/hot water, for a Worcester boiler that we inherited when we moved in 4 months ago. We are not a fan of the Hive bulky,heavy,ugly not very user friendly thermostat, I thought i would give the Hive some time,as unfamiliar but no i dislike it even more! We would prefer to have a Honeywell Thermostat/control panel,that we had at our old address. How easy/hard a task would this be for our heating engineer to carry out the work to change over? It's not something we could managed to do, we are totally clueless! Thanking you in advance.