“I have two zone heating and cooling controlled by two thermostats. Both are badly placed. I need to have both heat sensors in a different location. Do I need two units or will one be sufficient with two sensors?”
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Two zone heating means two thermostats, with each thermostat controlling their specific zone. An obvious example, one zone for first floor, one zone for second floor. A thermostat will be located on each floor to accurately measure temperature for that zone. Most importantly, when that zone falls below or goes above the temperature threshold, it *powers on* the heating/cooling system and tells the system where to bring the heat/cooling. So, if the second floor needs more heat, the air ducts or hydronic baseboards on the second floor will open up and bring in heat, while nothing happens on the first floor. While I'm not intimately familiar with how the remote sensor works in tandem with the thermostat's sensor, an obvious possibility is that they average their temperature readings and call for heat/cooling so that the temperature hits the set threshold in both locations. However, if you place remote sensors in a different zone, I don't think you'll ever get the cost savings or full benefits of a more balanced temperature since all you'll end up doing is running the wrong zone all the time. Following the example again, if you place a remote sensor on the second floor, with your main thermostat on your first floor, when the second floor requires heat/cooling, the equipment for the first floor turns on, rather than the second floor. You will very slowly, if ever, get the heat/cooling to float up to the second floor.... If your current thermostats are "badly placed" I think you should consider placing the new thermostats in a better location to start with, since the thermostat measures temperature from where it is physically located. So if it's located on an external wall, or in sunlight, those things will affect measurements, causing your system to turn on more frequently because the thermostat is being tricked. For each zone, relocate your thermostat location, then choose a good location for the remote sensor, and I think you will solve your issues.
Sorry, there was a problem. Please try again later.If you truly have 2 units with zones, then it will not work. It will not control zones. If you have two separate heating and cooling units (not zones) then it will work and you will need two thermostats, one for each unit. I would recommend at least one additional sensor per system, since the spot where you will be placing the thermostat is poorly located. It might be beneficial to relocate your thermostat, if you are able, but still get at least one remote sensor per system. Good Luck!
Sorry, there was a problem. Please try again later.You need one for each zone. If you get it with the remote sensors you can set it so that it reads the temperature only from specific sensors so that it doesnt matter where the thermostat is. And you can control it from your phone.
Sorry, there was a problem. Please try again later.The unit will take the average of the two sensors to determine its actions. Be aware that it will only control the one zone that the unit is wired to.
Sorry, there was a problem. Please try again later.You need TWO systems...one for each system. In my house, I had the upstairs thermostat located above a great room (which was heated/cooled by the main level system)...it was terrible as the bedrooms were always the wrong temp. The Ecobee system with the remote sensors solved this problem immediately (thought you need to disable the temperature sensing of the main panel which is easy to do once you pair the remove sensor to it). Best of luck.
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