You could run a new cable with an extra wire; which is the more correct way to do it, or you can use an existing wire. Start by disconnecting the wire from the G terminal in the thermostat, and connecting it to the Y terminal instead. Next, do the same in the furnace.

How do you wire a thermostat with 4 wires?

Quote from Youtube video: That is our 24 volt hot. So that our term the red wire goes to the our terminal. So we just press and slide it in make sure that it locks. And push it all the way then we can go to our green wire.

Why does my thermostat have 4 wires?

Smart thermostats like Nest and Ecobee thermostats require 4 wire thermostat wiring to function properly. In addition to heating (2 wire thermostats) and C or fan (3 wire thermostats), 4 wire thermostats include the cooling wire, usually in blue or yellow color.

How do I change my old thermostat to digital?

Quote from the video:
Quote from Youtube video: All right once you cut the power you're going to go ahead and pop off the front of your old thermostat here. And you'll see there's a bunch of different colored wires here.

How do I replace an old thermostat with a new one?

How to Replace an Analog Thermostat

  1. Step 1: Carefully Select New Thermostat. …
  2. Step 2: Shut Off Power to The Furnace. …
  3. Step 3: Remove the Faceplate From the Current Thermostat. …
  4. Step 4: Label the Wires. …
  5. Step 5: Disconnect the Wires and Remove the Wall Plate. …
  6. Step 6: Mounting the New Thermostat. …
  7. Step 7: Rewiring.

How do I wire a 4 wire Honeywell thermostat?

Quote from the video:
Quote from Youtube video: W is for white o. Or B is for orange or blue which here's the trick. When you have an older thermostat wire that runs the blue wire in there the four wire pair you want to hook the blue to the yellow.

What happens if you wire a thermostat wrong?

Potential consequences of improper installation could include: Electric shock. Blowing a circuit breaker. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself.

How do you wire a 4 wire to a 2 wire?

The first option is to use the black wire of the 12-3 cable as the hot wire. Connect the black wires of both cables together, and connect the common white wires together. Cap the red wire and leave it untouched in the junction box. Place plastic twist caps on all splices.

How do you use an old thermostat?

Quote from the video:
Quote from Youtube video: Set the cooling system to 68 or higher in the summer. And the heater to 74 or lower in the winter. If you want to adjust your thermostat. Before. You leave for the night or on the weekends.

How do you test a 4 wire thermostat?

Quote from the video:
Quote from Youtube video: The R and the G inside the thermostat to turn the fan on now I'm going to go ahead and turn the fan off and you see that our voltage has decreased. So what we're looking at is reading 24 volts.

Can you replace a manual thermostat with a digital one?

Replacing your analog thermostat with a digital one is a great way to save on your heating bill since digital thermostats are able to control heat more precisely. GNH can provide you with everything you need for installing a digital thermostat!

How do you install an old thermostat?

Quote from the video:
Quote from Youtube video: Remove the base and drill three sixteenth inch holes in the marked screw locations. Tap a plastic anchor into each of the holes until it's flush with the wall. Feed the wires through the opening.

Can you replace an old Honeywell thermostat?

You’re presumably replacing your old dial-type Honeywell thermostat with a programmable or smart thermostat. They’re both relatively similar to install, but be aware some programmable thermostats are becoming obsolete compared to the energy-saving capacities of smart thermostats.

How do I know if my thermostat is compatible?

Quote from the video:
Quote from Youtube video: Then select your country at the compatibility checker main screen tap get started then power off your hvac. System and remove the cover from your thermostat.

How do I upgrade my thermostat?

Upgrade Your Thermostat in 5 Easy Steps

  1. Step 1: Prepare to Remove Old Thermostat. …
  2. Step 2: List the Connections. …
  3. Step 3: Remove the Old Backboard & Install the New One. …
  4. Step 4: Reconnect Wires. …
  5. Step 5: Place Thermostat on Backboard.

Are thermostats interchangeable?

To answer this question in one word: no, thermostats are not exactly universal. The type of thermostat you choose to buy will depend on the type of HVAC system you have at home and when it was installed.

Can you replace your thermostat with any thermostat?

Purchase a replacement thermostat that will work with your system. Review the compatibilities listed on the packaging of the replacement thermostat. Most replacement thermostats are compatible with all common systems. However, if your system is unique, finding a replacement thermostat may be difficult.

How do I know if my thermostat is compatible with my furnace?

If you have any doubt about which type of thermostat is suitable for your furnace, refer to the furnace owner’s manual or contact the furnace manufacturer. Thermostats may also come with documentation that indicates what type of furnace they can be used with.

Are all thermostats wired the same?

For heating and cooling systems, it will have a red Rc and a red Rh wire. Though both wires are red, they are not interchangeable. For the thermostat to work properly, the red wires must be connected to the correct corresponding terminal. The C, or common wire, provides smart thermostats with continual power.

What are the color codes for thermostat wiring?

This is the most typical thermostat wiring style, and it applies to systems that regulate both heat and air conditioning. The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).

What is the common wire on a thermostat?

The C-Wire, or “common wire” enables the continuous flow of 24 VAC power to the thermostat. It’s a wire that (if you have one) runs all the way from your furnace to your thermostat.