---
product_id: 290885092
title: "Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK 8000 series thermostats"
brand: "honeywell"
price: "KSh17124"
currency: KES
in_stock: true
reviews_count: 8
category: "Honeywell"
url: https://www.desertcart.co.ke/products/290885092-honeywell-home-c-wire-adapter-for-honeywell-home-wi-fi
store_origin: KE
region: Kenya
---

# 24V continuous power Compact 1.75"D x 3.44"W x 5.63"H Easy push terminal install Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK 8000 series thermostats

**Brand:** honeywell
**Price:** KSh17124
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your smart home without the hassle!

## Quick Answers

- **What is this?** Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK 8000 series thermostats by honeywell
- **How much does it cost?** KSh17124 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/290885092-honeywell-home-c-wire-adapter-for-honeywell-home-wi-fi)

## Best For

- honeywell enthusiasts

## Why This Product

- Trusted honeywell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Space-Savvy Design:** Compact, wall-mountable adapter fits discreetly on your furnace exterior.
- • **Future-Proof Your HVAC:** Enables smart thermostat upgrades in older homes—join the connected home revolution.
- • **Seamless Compatibility:** Works flawlessly with Honeywell Home Wi-Fi and RedLINK 8000 series thermostats.
- • **Effortless Installation:** Simple push terminals and adhesive mount get you up and running in minutes.
- • **Power Your Smart Thermostat Anywhere:** Provides reliable 24V power without a common wire—no rewiring needed.

## Overview

The Honeywell Home C-Wire Adapter delivers continuous 24V power to Honeywell Wi-Fi and RedLINK 8000 thermostats in homes lacking a common wire. Featuring easy push terminals and an adhesive mount, it ensures quick, tool-free installation. Compact and wall-mountable, this adapter is the perfect solution to upgrade older HVAC systems for smart thermostat compatibility.

## Description

Install a Smart Thermostat Without a C-Wire. The C-Wire provides a path for continuous power to Wi-Fi thermostats, but often homes are missing this common wire. The C-Wire Power Adapter makes Honeywell Home smart thermostats compatible with most homes that don’t have this wire.

Review: 🔌 Honeywell Home C-Wire Adapter: Necessary and Works Perfectly! - This adapter works exactly as intended—I needed it to provide the C-wire for my desertcart thermostat installation. Ours has been in use since 2022! The instructions were good, and the product met all my needs perfectly! If you need a C-wire to install your smart thermostat, this is a solid choice.
Review: Great alternative to running new wire! - This converter was easy to install and came with easy to follow instructions. No issues getting the Honeywell Wifi thermostat connected to our hvac system. Our home was built in the 70s and naturally lacked the 5th wire to connect a 24v line to the thermostat. I was skeptical when buying this as it seemed too good to be true to get that power wire this easily. No issues! Something I ran into during install that wasn't really covered in the wiring instructions: My furnace is an HE model, the yellow wire was split off the main circuit board on the furnace and it was ran to a float safety switch, then off to the thermostat from that switch. Make sure you wire in this box after the switch not directly off the circuit board. This float prevents the unit from running if it is full of water and not draining.

## Features

- For Use With Honeywell Home WiFi Thermostats, RedLINK 8000 series thermostats
- The C-Wire Power Adapter makes Honeywell Home smart thermostats compatible with most homes that don’t have a common wire..Product Type :Electronic Component. | Package Dimensions :10.0 " L X10.0 " W X10.0 " H.Country Of Origin :United States
- Quickly and easily power connected thermostats that require a c-wire.
- Use for Wi-Fi, 24v Honeywell Home thermostats when a common wire is needed but not present.
- Easy push terminals and an adhesive mount make installation quick and easy.
- Simple adhesive mount allows you to attach the adapter to the outside of your furnace.
- Product Type: Electronic Component. | Package Dimensions: 10.0 " L X10.0 " W X10.0 " H.
- Country Of Origin: United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08M45SHJ4 |
| Backlight | Yes |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #66,645 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #71 in Home Thermostat Accessories |
| Brand | Honeywell |
| Color | White |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.2 4.2 out of 5 stars (3,810) |
| Date First Available | October 28, 2020 |
| Display Type | LCD |
| Global Trade Identification Number | 00085267994828 |
| Included Components | Wire Saver C-Wire Adapter |
| Item Package Quantity | 1 |
| Item Weight | 4.2 ounces |
| Item model number | THP9045A1098 |
| Manufacturer | Resideo |
| Material | Metal, Plastic |
| Model Name | THP9045A1098 |
| Mounting Type | Wall Mount |
| Part Number | THP9045A1098 |
| Power Source | Electric |
| Product Dimensions | 1.75"D x 3.44"W x 5.63"H |
| Shape | Rectangular |
| Special Feature | Low Voltage |
| Special Features | Low Voltage |
| Specific Uses For Product | Furnace |
| Style | Simple |
| Temperature Control Type | Heating |
| UPC | 085267994828 |
| Voltage | 24 Volts |
| Warranty Description | No warranty. |

## Product Details

- **Brand:** Honeywell
- **Controller Type:** Hand Control
- **Model Name:** THP9045A1098
- **Product Dimensions:** 1.75"D x 3.44"W x 5.63"H
- **Special Feature:** Low Voltage

## Images

![Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK 8000 series thermostats - Image 1](https://m.media-amazon.com/images/I/411PmyPSDxL.jpg)

## Questions & Answers

**Q: Is it compatible with 	 honeywell home t9 wifi smart...**
A: Most likely it is

**Q: My "bryant plus 80" furnace does not have "c" connector but it has one marked "com 24v". is it the same wire just marked differently?**
A: This should be the same terminal function as the C-terminal. -Joey

**Q: Amazon said i needed this, but i have 5 wires. g, y, w, rh, and rc. how do i install adaptor when it only wants 4 wires?**
A: It looks like your missing the C-wire, see direction below. 
Turn off power to the furnace and thermostat.
Wire the Y and G in the thermostat to the C and K terminals.
Wire the K on the thermostat to the K terminal on the wire saver.
Wire the R and C on the thermostat to the R and C terminals on the wire saver and equipment.
Wire the W from the thermostat to the W terminal on the HVAC equipment.
Wire the Y and G on the wire saver to the Y and G terminals on the HVAC equipment.
The RC wire will stay connected to the RC terminal on the system and thermostat. 
-Joey

**Q: I have a Honeywell programmable thermostat does that mean I already have a c-wire?**
A: Hi, not all our thermostats require a C wire, only the Wi-Fi models 9except for the Round that can work without a C wire). We recommend you verifying the wiring of your current thermostat and check if you have any extra wires that are not being used. We will be happy to help you finding the correct option to add a C wire at (800) 633-3991 or on social media. - Maria

## Customer Reviews

### ⭐⭐⭐⭐⭐ 🔌 Honeywell Home C-Wire Adapter: Necessary and Works Perfectly!
*by R***L on December 5, 2025*

This adapter works exactly as intended—I needed it to provide the C-wire for my Amazon thermostat installation. Ours has been in use since 2022! The instructions were good, and the product met all my needs perfectly! If you need a C-wire to install your smart thermostat, this is a solid choice.

### ⭐⭐⭐⭐⭐ Great alternative to running new wire!
*by T***E on October 6, 2024*

This converter was easy to install and came with easy to follow instructions. No issues getting the Honeywell Wifi thermostat connected to our hvac system. Our home was built in the 70s and naturally lacked the 5th wire to connect a 24v line to the thermostat. I was skeptical when buying this as it seemed too good to be true to get that power wire this easily. No issues! Something I ran into during install that wasn't really covered in the wiring instructions: My furnace is an HE model, the yellow wire was split off the main circuit board on the furnace and it was ran to a float safety switch, then off to the thermostat from that switch. Make sure you wire in this box after the switch not directly off the circuit board. This float prevents the unit from running if it is full of water and not draining.

### ⭐⭐⭐⭐⭐ Works as intended for a heat pump system
*by B***L on February 1, 2025*

TL,DR: Using this with an Amazon Smart Thermostat and works fine. Though I did have a small moment of panic initially after installing everything and setting up the thermostat itself. As I was admiring my work and watching the thermostat come to life and wake up in its new home, it began “clicking on” and then immediately going blank for several seconds. At first I was thinking this may be part of the set up… until it didn’t click on again and was unresponsive in every way. At this point I just knew for sure I fried something, was going to have to call a technician out, and they were going to tell me I’d have to replace my entire system for thousands of dollars. I grabbed my multimeter and verified I had power coming to the furnace and then checked the small 3 amp fuse at the control board which was blown. I switched that out with one I luckily had on hand and everything came back to life as I threw the breaker back on. That was yesterday afternoon and everything has been working fine ever since. Further things I learned during this process: - What each wire does on a heat pump system (hence the pic with them identified). - This adapter combines the fan and condenser wires to free up a wire to be used as the C-wire - The C-wire is effectively the return for the 24v to the thermostat to complete the circuit (think chassis ground on a car or neutral on a home circuit). - If you have an unused wire on your thermostat cable, you don’t need this. Just hook that unused wire to the C-wire in your furnace (look for the blue wire coming from your outside unit and verify where it goes to the control board in the furnace) because even if you get this, you still gotta find a C wire to connect it to.

## Frequently Bought Together

- Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK 8000 series thermostats
- Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required
- 2-Year Protection Plan for Amazon Smart Thermostat

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-04*