When you’re seeking approaches to decrease heating and cooling costs, getting a smart thermostat is an intelligent move. These devices adjust to your favorite temperatures and routine and then create an energy-efficient schedule that fits. What’s even better is that you can change and monitor your settings from almost anywhere with your phone, whether you’re relaxing in bed or away from home. (You might even be able to get a free smart thermostat depending on rebate programs from your utility supplier in Chadron.)

Most of the time, adding a smart home thermostat with the help of MPC Heating & Cooling is a straightforward job if you have a more modern house. But what if your house is older or doesn’t have the right wiring? Can you still have a smart thermostat without C wire? We’ll help you demystify the process so you can choose the right thermostat and enjoy energy savings for a long time.

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

Most programmable thermostats use batteries. When you’re switching to a smart thermostat, you’ll find that many require a C wire, or common wire, for power. If you don’t have this wire, your new thermostat could cause your heating and cooling system to have glitches.

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

  1. Turn off power to the thermostat at the breaker.
  2. Take off the thermostat and find 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 usually blue.
  4. If there are three or four thin multicolored wires, you’re almost there. Check 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 operate your new thermostat without one.
  5. If you have two thick wires, you may be able to use a smart thermostat with an adaptor designed for high-voltage systems. Or you may be able to use a battery-powered smart thermostat, like the Lux Geo Wi-Fi Thermostat, if your wiring isn’t right and you don’t want to replace it.

Do Nest or ecobee Need a C Wire?

Two of the best-selling brands are the Nest smart thermostat and ecobee smart thermostat. If you have two to four wires, these thermostats may be a match for your needs.

Nest says its thermostats are made to need very little power and can typically share it with your HVAC system. However, you may need to have a professional like MPC Heating & Cooling 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 frequently drained.

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

Trust MPC Heating & Cooling for Your Smart Thermostat Installation Needs

At MPC Heating & Cooling, we’re always on the lookout for methods to keep you cozier while keeping heating and cooling expenses reasonable. If you have questions about installing a smart thermostat without a C wire, contact us at 308-832-4321. We can help you pick the right model for your residence and even install new wiring if required.