Programmable Hydronic Communicating Thermostat

If you want all of the features of the Aquatrol to work, these thermostats are a must. Zone synchronization improves efficiency and actually makes your boiler last longer (fewer starts and stops means less wear), and it only works with these thermostats. Programming is simple and straighforward, and gives the option of whether you want to program each day, or use one program for all (which saves time versus doing each day separately if you just want it the same for all). I'm unsure what other reviewers are complaining about, as this is one of the simplest programmable thermostats I've ever installed.

My main use for this control is it's programming features.I could use the Aquatrol but that would require me to go down to the cellar.This thermostat tells me outside and inside temp,time,when furnace is running and when I put temp.on hold.love this Honeywell system it keeps my oil consumption low and I keep warm.

I agree with the first reviewer. This thermostat is impossible to program. I told the installer of my boiler that I hated it and he replaced it with the same model. I'm not going through another winter with it. I hate it, hate it, hate it!!!

This thermostat is the worst thermostat i have ever used. A thermostat should be simple and straightforward. This one is not. Getting out of its pre-programed cycles is a nightmare and it should not be. And the manual is not even worth the paper its printed on. Make sure you look at other options and stay clear away from this. . Junk.