When you’re seeking methods to lower energy costs, getting a smart thermostat is a smart idea. These devices adjust to your favorite temperatures and routine and then make an energy-efficient schedule to match. What’s even better is that you can regulate and keep an eye on your settings from just about anywhere with your phone, whether you’re relaxing in bed or out and about. (You might even be eligible for a free smart thermostat depending on rebate programs from your utility company in Hodgenville.)

Most of the time, installing a smart home thermostat with the support of Phelps Heating & Cooling, Inc. is an uncomplicated task if you have a newer house. But what if your residence is older or doesn’t have the correct wiring? Can you still add a smart thermostat without C wire? We’ll help you demystify the process so you can choose the correct thermostat and receive energy savings for years to come.

What Is a C Wire and What Does It Do on a Thermostat?

Most programmable thermostats need batteries. When you’re making the move to a smart thermostat, you’ll learn that many need a C wire, or common wire, for power. Without this wire, your new thermostat might cause your heating and cooling system to have malfunctions.

You can ascertain if you have a C wire by doing the following:

  1. Switch off power to the thermostat at the breaker.
  2. Pull off the thermostat and look at the wiring.
  3. If there are five or six multicolored wires, you have what’s required for a smart thermostat. You might be thinking what color is the C wire on a thermostat—and the answer to that is typically blue.
  4. If there are three or four thin multicolored wires, you’re close. Ensure the C wire isn’t rolled up within the wall. If you can’t find one, we may be able to add one for you or you may be able to use your new thermostat without one.
  5. If you have two thick wires, you may be able to run a smart thermostat with an adaptor specifically for high-voltage systems. Or you may be able to operate a battery-powered smart thermostat, like the Lux Geo Wi-Fi Thermostat, if your wiring isn’t right and you don’t want to put in new wiring.

Do Nest or ecobee Need a C Wire?

Two of the top brands are the Nest smart thermostat and ecobee smart thermostat. If you have two to four wires, these thermostats could work for your needs.

Nest says its thermostats are created to need minimal power and can often share it with your home comfort system. However, you may need to have a pro like Phelps Heating & Cooling, Inc. install a C wire with the Nest Thermostat E or Nest Learning Thermostat if you’re running into power problems or a battery that’s always drained.

ecobee works with 24-volt systems (ones with three to six thermostat wires) and has a C wire adaptor. So, you’re taken care of if you don’t have a thermostat C wire.

Depend on Phelps Heating & Cooling, Inc. for Your Smart Thermostat Installation Needs

At Phelps Heating & Cooling, Inc., we’re always seeking methods to keep you comfier while keeping energy expenses reasonable. If you have questions about upgrading to a smart thermostat without a C wire, reach us at 270-358-3167. We can help you pick the right model for your house and even install new wiring if necessary.