Can you have 2 wires connected to the C on the furnace?
The C wire is the Common wire that supplies a constant 24VAC. If you have a free wire on both ends on your cable, great, you can use that free wire and plug it into C for both ends. If your C connection point is already being used for something else, you should be able to add another wire into that green fitting.
Can you wire two thermostats together?
The question is whether it is possible to use two thermostats to control one Zone. 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.
How many wires can be connected to C on furnace?
@JPhi1618 If I remember correctly, NEC says one per terminal, unless the terminal specifically states that more are allowed (110.14(A)). At any rate, we’re talking about 3 wires, not 2.
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.
Can you terminate more than one common on the furnace C terminal?
Yes you can terminate any number of connections on the C terminal. All of the connections will be in parallel. This is very common.
Does C wire have voltage?
The C wire, a.k.a. the “common wire”, allows a constant flow of 24 VAC (volts AC) power to a smart thermostat. However, the C wire doesn’t provide the actual source of power to the thermostat. The wires that provide the source of power are the R wires (or hot wires).
How do you run two thermostats?
Quote from the video:
Quote from Youtube video: You're going to want to set your upstairs thermostat a couple degrees warmer. Than your downstairs thermostat. For example if the target temperature you want to keep your house out with 75 degrees.
How does a house with 2 thermostats work?
Nest thermostats in the same home don’t share temperature schedules. Each Nest thermostat learns a separate schedule for the zone that it controls. So you can teach your thermostat downstairs to warm up the kitchen in time for breakfast, while the thermostat upstairs turns down for the day.
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.
Can you install a second thermostat?
Generally speaking, it is always possible to add an extra thermostat to any HVAC home system to create a zoned system in your house. If the second thermostat is correctly installed, set, and used you will save on your electricity bill. If you are a DIY enthusiast you will be able to do the installation yourself.
Do I need 2 thermostats for 2 zones?
Sometimes, central HVAC systems are broken up into multiple zones (through duplication of heat sources, or usage of dampers and ducts). Each of those circuits will require their own dedicated thermostat. If this is the case, we’d recommend a separate smart thermostat for each zone.
How do I create a multiple heating zone?
Homeowners with forced hot air heating systems also can create multiple zones by using two or more thermostats connected to a master control panel; the control panel opens and closes dampers that are installed within the ductwork.
What is the Blue C wire on a thermostat?
heat pump
C wires or varying colors apply to every thermostat, but blue C wires belong to thermostats attached to a heat pump. Blue wires are for heat pumps, like orange wires. This wire connects to terminal B on your thermostat.
What if there is no C wire for thermostat?
You most likely have a line voltage system and none of the popular smart thermostats on the market are available to you as-is. (There is some hope with an adapter, but don’t get too excited yet.) This wiring indicates a line voltage system, and you’ll need an adapter or a smart thermostat designed for line voltage.
Is RC and C wire the same?
The C and Rc wires are not the same. To install this thermostat you should follow the exact same wiring of the previous thermostat.
Can I use G wire for C wire?
Option #3: Use a G-Wire as a C-Wire
If there is no hidden C-wire, you can use a G-wire instead. However, you will not be able to use your fan independently when the heating or cooling isn’t running. Also, many HVAC systems are incompatible with this solution, including: HVAC systems using electric heat.
How do you make a C wire for a thermostat?
Quote from the video:
Quote from Youtube video: Run actual thermostat wire in the all and connect. It to the existing thermostat wire if you've got an extra wire or if you want to fish some new ones in the wall. Not a big deal there.
Does Nest Thermostat E work without C wire?
Nest claims that you can use the Nest Thermostat without a C-wire. While this is true, it would be advisable to have a C-wire. A lot of Nest users have had problems when they use the thermostat without a C-wire. In the absence of a C wire, your thermostat battery charges itself by using the power from your HVAC system.
How long does Nest thermostat battery last without C wire?
The lifespan of the internal battery depends on the type of continuous charge it gets from the HVAC system. With a constant stream of power, the battery can last 5 – 10 years without issue.
Do I use RH or RC on Nest thermostat?
The Nest Thermostat E only has an R connector, which is typically where an R wire would go. If you have separate heating and air conditioning systems, you might have separate Rh and Rc wires that come out of the wall and are connected to your system.
