I recently bought a new house. They installed a danfoss TP9000 system, with a remote temperature sensor and a second thermostat in the master bedroom. Unfortunately the programmer is placed upstairs. Since me and my girlfriend both work shifts, the programmer is not a lot of use to us. I have been looking for a wireless system so at least I can have the controller somewhere downstairs. I have been looking at a Honeywell Sundial RF2 system. Does anybody know if these systems are replaceable? Could it be installed without replacing all the piping, boiler, etc. Or are there beter solutions? I hope someone can help me. Regards