The 5 Best Thermostat add A wire adapters (2023 reviews)

It is important to have the well suited thermostat add a wire adapter. In the following post, we will help you to select the best thermostat add a wire adapters.

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Our Top Picks:

Venstar Thermostat add A wire adapter Buy: READ REVIEW

Honeywell Thermostat add A wire adapter Buy: READ REVIEW

Google Thermostat add A wire adapter Buy: READ REVIEW

Venstar two wire Kit Buy: READ REVIEW

Idevices Thermostat add A wire adapter Buy: READ REVIEW

Venstar Thermostat add A wire adapter

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The venstar thermostat add a wire adapter is capable of outshining several other adapter featured in this list in overall features for the price point. This conversion kit is intended as a retrofit for use between a wall mounted thermostat and a HVAC control board. It can be used on a 2-wire system that will be using heat and a/c. Once you find a mounting point, the actual wiring installation takes about 5-10 minutes, depending on your skill and confidence level.

The package comes with 2 wire nuts, which should be enough. These have the add-a-wire device in your hand, plus the photo of your panel, then watch the video. It is easy and done in 20 minutes. It is used to combine the c-wire, hot, or ground. The thermostat works perfectly. It is a must have if you have 4 wire cable and want to install a nest smart thermostat.

• Perfect solution to using a 5 wire thermostat when you only have 4 wires
• Very easy instalation, and doesn't take long time
• Electrician to run wires, no bulky power adapter, no drywall cutouts and patches
• Great contraption for older home ac wiring

Honeywell Thermostat add A wire adapter

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If you often find yourself confused about appropriate and satisfactory adapter, honeywell thermostat add a wire adapter should be your first option for buying. The wire power adapter makes honeywell home smart thermostats compatible with most homes that do not have this wire. It connects the wires from the thermostat to the wires from the furnace. This unit mounts inside the air handler near the HVAC control board. It is designed for this and has a "k" terminal to accommodate the multiplexed signals. This requires 4 wires and you substitute your G wire and make it a C wire on this adapter.

It is designed to replace your existing thermostat wires but merely “converts” existing thermostat wires to accommodate a c-wire to provide constant power for wifi and smart thermostats. This is necessary if you’re looking to utilize the system for constant fan “on” if you don’t have a c-wire. The adapter requires additional wires.

• A must for honeywell wi-fi stat and 4 wire cables
• A breeze to install even for a woman
• Easy installation to create a "c" wire

Google Thermostat add A wire adapter

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The google thermostat add a wire adapter might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. If you have a zoned system with more than one thermostat, the power connector should be installed at the zone controller. It’s simple and allows you to have a common wire for two wire heating boilers for Burnham Alpine. The Nest Power Connector is designed to be installed between the thermostat wiring and the circuit board of your HVAC system, not on the thermostat. It provides proper voltage and will help out many others.

The power connector wires are about six to eight inches long. It takes several minutes for the heater or ac to come out and produce heat tor cold air. This should be between your zone control board and the thermostat wires. The zone valve that this additional thermostat is connected to will often not open all the way or get stuck half closed.

• Great solution for your nest system and hvac system
• Super easy to install at zone controller
• Easily disconnected especially with wire connectors included
• Cheaper and faster than running an additional wire

Venstar two wire Kit

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The venstar two wire kit should be able to handle its purpose and duties with ease. This product is simple to use for someone who understands basic electrical principles. It is perfectly to add a nest to a mendota gas fireplace. It is perfect for using an ecobee on an old 2 wire furnace setup. It comes with two twists on wire caps. The extra wires and connector are for if you have a five wire thermostat.

This unit will work on any thermostat requiring a two-wire-to-four-wire conversion. If you have a similar red and white wire system this will work for you. It is easy to install and can locate the venstar t1100rec conveniently near the furnace.

• Adds c wiring for 2 wire heaters
• Works great and easy to install
• Simple solution to add a modern thermostat to a millivolt heating system
• Worked great with ecobee and steam heat

Idevices Thermostat add A wire adapter

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate adapter. The idevices thermostat add a wire adapter is exactly that - it's a simple adapter that hits all the right notes. The thermostat wire adapter adds the function of a common (c) wire to your existing system with minimal effort so you can get you up and running with the idevices thermostat in no time. It works with most 24vac systems with at least 3 physical wires running to the thermostat. The thermostat wire adapter can also be used to add another wire if additional wiring can not be run. It is incredibly easy to install. There's a very detail installation instruction guide, easy to follow if you know what you doing.

• Delivers what they promise
• Good investment for long term