The Nest Thermostat is compatible with 2 wire low voltage HVAC systems that are either heat only systems or cooling only systems.
Blue wires are also called “C” wires because they are the Common wire. C wires are necessary for any “smart” thermostat that needs to be connected to a power source 24/7, regardless of your heat pump type. Blue wires are for heat pumps, like orange wires. This wire connects to terminal B on your thermostat.
Google claims that Nest users save enough on their energy bills to pay for the thermostat within a year. In the end, the value of a Nest thermostat really depends on your unique situation. If you want and can use the smart features, it's a great thermostat to buy.
With the Google Nest skill, you can tell Alexa to change the temperature of your home and show your Nest camera video on an Amazon video player. Here's how to connect your products and control them with your voice using Alexa. Amazon Alexa supports the following Nest products: Nest cameras and doorbells.
iComfort E30 Smart ThermostatVersatile and adaptable, the iComfort E30 is a universal thermostat that can work with your existing Lennox® system and is also compatible with non-iComfort-enabled and non-Lennox products, making precise temperature and comfort control easier and more convenient than ever.
Nest Thermostat works with Apple HomeKit using a Homebridge hub or device. However, Nest does not offer native or direct integration with HomeKit.
The easiest way to determine if you have a dual fuel system is to ask your local heating system repair company. However, it may be possible to determine this without a service call. The model number on the faceplate of this unit, typed into a quick Google search, can help you uncover your system type.
It's easy to install a Nest thermostat yourself on most systems. After they've installed your Nest thermostat, they can give you a demo and answer any questions you have. If you purchase a Nest thermostat from a pro and have them install it, you can also get an extended Pro Warranty.
Furnaces and thermostats are not mix-and-match components. There are several types of heating systems and thermostat systems, and they must be compatible with one another to ensure safe and proper operation.
Nest is not compatible with Lennox XC21. It has 2 stage cooling and the Nest will not be able to activate 2nd stage due to protocol issues.
Sometimes the wire in your Nest thermostat's C connector isn't properly connected to your system or your thermostat. If you're still having issues with a wire in your thermostat's C connector, contact a local pro to diagnose your system and check that your C wire is installed correctly.
Without a Wi-Fi internet connection, your Nest Thermostat will only function as a traditional thermostat. You can still manually control your HVAC systems using the interface on your thermostat. Most Nest thermostats will work with your existing settings and schedules you implement even without an internet connection.
What is a C-Wire? A common wire (C-Wire) provides Wi-Fi thermostats continuous power by connecting it to a heating and cooling system (e.g. furnace). C-Wires are required on most Honeywell Wi-Fi thermostats, with the exception of the Smart Round Thermostat (formerly known as the Lyric Round).
The Nest: Compatible with about 95% of all heating and air conditioning systems on the market. Trane ComfortLink II: To get the most out of this system you will need to hook it up to a compatible Trane system, however, the Trane ComfortLink II can also control just about any HVAC system's temperature.
The c wire is an extra wire that can be used to provide a return path for continuous 24V power for any application. It's normally used to provide a return path to power the thermostat. The “c” stands for common. It is often labeled as “c” on thermostat backplates.
Press on your Nest Thermostat unit to bring up the main menu. Use the silver scroll wheel and go to “Thermostat”. Push on the unit to select it. From there, scroll and select either “Heat”, “Cool”, “Heat-Cool”, or “Off”, just like you would in the Nest app.
The
average Nest thermostat
installation costs $100 to $200 for labor-only if you provide the thermostat unit.
Nest Thermostat Installation Cost.
| Item | Average Cost |
|---|
| Installation Labor | $100 – $200 |
| Total Cost | $269 – $449 |
You probably have a low voltage (24v) system if…
- You have 2 to 9 (or more) wires.
- Those wires are low gauge (rather thin compared to other electrical wiring)
- Your wires are multicolored (red, white, green, orange, blue, black)
- You have a furnace somewhere in your house – basement, garage, bathroom, etc.
The Nest Learning Thermostat uses self-programming technology to learn as you heat, calculating what times of the day you prefer it to be warmer or cooler. After just one week, Nest will then create an Auto-Schedule for your home, managing your heating so you no longer have to.
The best way is to check your outside system; there is usually a label that specifies if it is a heat pump or an air conditioner. If no such designation exists, Google the model number and brand name. You can also check for horizontal brass pipes within your condensing units, which are unique to heat pumps.
Use the wiring diagram you got from the compatibility checker in step 4 to connect your system wires to the Nest Thermostat. Note: If you have an R, Rc or Rh wire, you can put it into the R connector on the Nest Thermostat. If you have a W2, Y2 or O/B wire, you can put it into the *O/B connector, if needed.
The Nest Thermostat E works with 85% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal.
And the
Carrier Infinity Touch Control with Remote Services and the
Nest Thermostat are two such smart thermostats. While most 24V heating and cooling systems are
compatible with Nest thermostats, there are some systems that aren't
compatible.
Is Carrier Infinity compatible with Nest?
| Carrier Model | Heating Stages | WiFi |
|---|
| CÔR 5C/5 | 2 | OPTIONAL |
The Nest Thermostat E only has an R connector, which is typically where an R wire would go. These are not jumper wires, and you can insert the Rc wire into the Rc connector and the Rh wire into the Rh connector. Tip: Keep your old thermostat, any jumper wires and a picture of how the wires were originally connected.
It is possible to save some money by installing or replacing your thermostat yourself, but you will need: Basic electrical knowledge. A general understanding of the type of equipment being used.
Upgrading to a thermostat that automatically changes the indoor temperature setting is fairly easy, and it can trim about $180 off your annual heating and cooling costs, according to the EPA. Simple models that only control heat are sold at home centers for around $25.
If your Wi-Fi goes out, you can still manually operate a smart thermostat just as you would a regular one. Check with the manufacturer to make sure your desired smart thermostat is compatible with your heating and cooling setup, especially if you own an older home.
Normally an HVAC service technician installs thermostats, but you can also have an electrician do it. Installing a thermostat requires basic electrical knowledge, so always hire a professional. An electrician can be hired for $40-$120 per hour.
In most cases, the thermostat will produce a small clicking sound when the changes are made, then the heating or cooling equipment will start. If this clicking sound doesn't occur, or if the system doesn't come on shortly after the changes are made, the thermostat may need replacing.
Look at the backplate with the faceplate off. There are two LEDs on the PCB, a green LED and a red LED. If the green LED is off then the thermostat is not communicating to the WiFi network. If the green LED is blinking then the thermostat is in ad hoc mode and is ready to be put on your local network.
Here are the best thermostats:
- Best overall: Google Nest Thermostat E.
- Best non-programmable: Honeywell Digital Non-Programmable Thermostat.
- Best with Alexa: Ecobee SmartThermostat with Voice Control.
- Best smart thermostat on a budget: Emerson Sensi Wi-Fi Smart Thermostat.
Almost half of monthly energy costs are controlled by your thermostat—a smart thermostat can help reduce your energy bills. The advantage of a smart thermostat is its ability to learn a household's patterns and adjust heating and cooling according to when a home is occupied or is about to be occupied.
