---
product_id: 383119638
title: "Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098"
brand: "honeywell"
price: "$149"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/383119638-honeywell-home-c-wire-adapter-for-honeywell-home-wi-fi
store_origin: NZ
region: New Zealand
---

# Continuous 24V power delivery Compact 14.29 x 8.73 cm size Tool-free push terminal installation Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098

**Brand:** honeywell
**Price:** $149
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your smart home upgrade—no common wire? No problem!

## Quick Answers

- **What is this?** Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098 by honeywell
- **How much does it cost?** $149 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/383119638-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

- • **Sleek, Discreet Design:** Closed cover hides components for a clean, professional look.
- • **Effortless Installation:** Push terminals and adhesive mount mean no electrician needed.
- • **Universal Compatibility:** Works with most Honeywell Wi-Fi and RedLINK® 8000 Series thermostats.
- • **Space-Saving Form Factor:** Compact adapter fits neatly on your furnace exterior.
- • **Seamless Smart Thermostat Upgrade:** Power your Wi-Fi thermostat effortlessly without a common wire.

## Overview

The Honeywell Home C-Wire Adapter (THP9045A1098) enables continuous 24V power to Wi-Fi thermostats in homes lacking a common wire. Featuring easy push terminals and an adhesive mount, it allows quick, tool-free installation with a sleek closed cover design. Compatible with most Honeywell Home Wi-Fi and RedLINK® 8000 Series thermostats, this compact adapter is the perfect solution to modernize your HVAC control without rewiring.

## 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.

## Features

- The C-Wire Power Adapter makes Honeywell Home smart thermostats compatible with most homes that don’t have a common wire.
- Quickly and easily power connected thermostats that require a c-wire. Easy push terminals and an adhesive mount make installation quick and easy, while the closed cover conceals internal components.
- Use for Wi-Fi, 24v Honeywell Home thermostats when a common wire is needed but not present. Note, your home may have an unused C-Wire that should be verified before purchasing this adapter.
- 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..Not compatible with electric baseboard heat..Before purchasing, check to see if the Wi-Fi thermostat you will pair with this adapter is compatible with your home and determine if your home needs a C-wire power adapter.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 14.29 x 4.45 x 8.73 cm; 118 g |
| Item Weight | 0.12 Kilograms |
| Specific uses | Furnace |
| Batteries required | No |
| Included components | ["THP9045A1098 Adapter"] |

## Product Details

- **Brand:** Honeywell
- **Model name:** THP9045A1098
- **Product dimensions:** 4.4D x 8.7W x 14.3H centimeters
- **Controller type:** Hand Control
- **Special features:** Low Voltage

## Images

![Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098 - Image 1](https://m.media-amazon.com/images/I/411PmyPSDxL.jpg)
![Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098 - Image 2](https://m.media-amazon.com/images/I/71AjSMTbLJL.jpg)
![Honeywell Home C-Wire Adapter for Honeywell home Wi-Fi Thermostats and RedLINK® 8000 Series thermostats THP9045A1098 - Image 3](https://m.media-amazon.com/images/I/41oTLCOtrsL.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

## 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
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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-14*