Can you install a second thermostat?
You can help make a more evenly conditioned home by installing a separate thermostat in another part of the house. When two thermostats are wired to a heating or cooling system with a zone control and dampers installed in the ductwork, you have true separate temperature zones in your home.
What is o’b wire on thermostat?
O, B, O/B: These wires are responsible for switching the changeover valve in a heat pump system. The O wire reverses the valve from heating to cooling, and the B wire switches the valve from cooling to heating.
Can 2 thermostats work together?
There are some that allow multiple thermostats to be linked together (eg, NEST, which also has motion sensors to automatically recognize when you’re there), although this still doesn’t get a multi-zone system, just a way to heat or cool the entire house from multiple locations.
How do two thermostats work together?
When multiple thermostats control one system, the house is divided into zones using dampers in the ductwork throughout the house. When one zone needs heating or cooling, the damper for the ductwork in that zone opens, guiding the warm or cool air to that zone.
Should my thermostat be set to O or B?
Check your configuration. Most commonly, O/B is energized in Cooling (O on cool). For Rheem or Ruud brand heat pumps, the O/B must energize on heating (B on Heat).
Is my reversing valve O or B?
The O/B terminal is for heat pump systems and is used for the reversing valve.
How do I know if I have B or O wire?
Look for connectors that have labels that are the same as your thermostat. For instance, you might find labels like R, W, G, Y, C or O/B. You should find wires attached to these connectors that are the same color as the wires that connect to your thermostat.
Why would a house have two thermostats?
You will need separate thermostats for upstairs and downstairs, and it is crucial these are set up correctly for optimal comfort. Upper stories are warmer than lower ones, so you want to adjust the temperature depending on the season to properly set up upstairs and downstairs thermostats.
Can I wire two thermostats in parallel?
You may not be able to wire two thermostats exactly in parallel, but using multiple wall thermostats or temperature sensors to control one individual heating or cooling zone is easier than you might think.
How do you wire a dual thermostat?
Unscrew the two wires from the terminals. Remove the motherboard of the old 2 wire thermostat and put the new 2 wire thermostat in its place. Reconnect the red and white wire, tighten down the set screw, and put the control panel back on. Test the 2 wire thermostat wiring by turning the furnace on.
What if my thermostat has only two wires?
If your heating system has only two wires, the job of the thermostat is simple. All it has to do is turn the heat or the cooling on and off. There’s no auxiliary fan to worry about and no heat pump.
What happens if you wire a 2 wire thermostat wrong?
If you get it wrong, the heat will run continuously. Once you have them paired, attach one pair to “24VAC” (R) and the other to “Heat call” (W) on the thermostat. Doesn’t matter which one, since the thermostat just shorts them either way.
Can I hook up two thermostats to one furnace?
Yes, in principle, you can use two thermostats to control one HVAC zone. If correctly installed, set, and used you can actually save on your electricity bill. You can also connect more than one thermostat to a single HVAC unit.
Do I need two thermostats?
If you have a traditional thermostat that doesn’t support the use of temperature sensors, you will need a thermostat in each room and potentially, multiple heating and cooling systems.
How many thermostats should a house have?
You don’t need to have two thermostats, but some homes do have one on each floor. Keep in mind that will need to do electrical work or hire an electrician to add a thermostat. Having two thermostats requires both to be connected to the same control panel.
Should thermostat be upstairs or downstairs?
The rule of the thumb to remember is that hot air normally rises and cool air sinks. So for your two-story home, your upstairs will feel warmer than the downstairs. For this reason, it is best to install your thermostat in the most central location.
Do I need 2 thermostats for 2 zones?
If you currently have two thermostats controlling two zones you will want two Nest thermostats. You do not need to upgrade them both at the same time.
