---
product_id: 457966098
title: "Honeywell RTH221B1039 1 Week Thermostat by Honeywell"
brand: "honeywell"
price: "4322972₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/457966098-honeywell-rth221b1039-1-week-thermostat-by-honeywell
store_origin: VN
region: Vietnam
---

# 24V hardwired power reliability Auto Changeover seamless switching Touchscreen control precision Honeywell RTH221B1039 1 Week Thermostat by Honeywell

**Brand:** honeywell
**Price:** 4322972₫
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay ahead of the curve with smart, seamless temperature control!

## Quick Answers

- **What is this?** Honeywell RTH221B1039 1 Week Thermostat by Honeywell by honeywell
- **How much does it cost?** 4322972₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/457966098-honeywell-rth221b1039-1-week-thermostat-by-honeywell)

## 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 Modern Design:** Glossy white rectangular frame complements any contemporary workspace or home office.
- • **Smart Auto Changeover:** Automatically switches between heating and cooling to maintain perfect balance.
- • **Uninterrupted Comfort:** Hardwired 24V power ensures your thermostat never misses a beat.
- • **Energy-Savvy Scheduling:** 1-week programmable settings help you optimize energy use and reduce bills.
- • **Effortless Climate Mastery:** Intuitive touchscreen lets you customize your environment with a simple tap.

## Overview

The Honeywell RTH221B1039 is a modern, wall-mounted digital thermostat featuring a responsive touchscreen interface, reliable 24V hardwired power, and an intelligent Auto Changeover function that automatically toggles between heating and cooling. Designed for professional spaces and smart homes, it offers a sleek glossy finish and 1-week programmable scheduling to enhance comfort and energy efficiency.

## Description

Honeywell RTH221B1039 1 Week Thermostat by Honeywell

## Features

- Auto Changeover

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Honeywell |
| Controller Type | Touchscreen |
| Special Feature | Auto Changeover |
| Colour | White |
| Temperature Control Type | digital |
| Connectivity Technology | Wired |
| Power Source | Hardwired |
| Voltage | 24 Volts |
| Shape | Rectangular |
| Display Type | touchscreen |
| Finish Type | Glossy |
| Control Type | Button Control |
| Control Method | Touch |
| Mounting Type | Wall Mount |
| Style | Modern |
| Backlight | Yes |
| Number of Batteries | 2 AA batteries required. |
| UPC | 085267348553 |
| Global Trade Identification Number | 00085267348553 |
| Country of Origin | USA |
| Item model number | RTH221B1039 |
| ASIN | B018A3DHJY |

## Product Details

- **Brand:** Honeywell
- **Controller Type:** Touchscreen
- **Special Feature:** Auto Changeover
- **Colour:** White
- **Temperature Control Type:** digital
- **Connectivity Technology:** Wired
- **Power Source:** Hardwired
- **Voltage:** 24 Volts
- **Shape:** Rectangular
- **Display Type:** touchscreen

## Images

![Honeywell RTH221B1039 1 Week Thermostat by Honeywell - Image 1](https://m.media-amazon.com/images/I/61czZlHOxkL.jpg)
![Honeywell RTH221B1039 1 Week Thermostat by Honeywell - Image 2](https://m.media-amazon.com/images/I/61EWhMzTYQL.jpg)
![Honeywell RTH221B1039 1 Week Thermostat by Honeywell - Image 3](https://m.media-amazon.com/images/I/51lBvaXOEpL.jpg)
![Honeywell RTH221B1039 1 Week Thermostat by Honeywell - Image 4](https://m.media-amazon.com/images/I/61vHS9CYO7S.jpg)
![Honeywell RTH221B1039 1 Week Thermostat by Honeywell - Image 5](https://m.media-amazon.com/images/I/71FIONNs15L.jpg)

## Questions & Answers

**Q: How did everyone else get the red wire in if it is so tightly screwed in? I can’t seem to get it to budge, even with the correct size screwdriver.**
A: I used a small flathead that fit in the slot. Then used pliers on the shaft of the screwdriver. I used the pliers to turn the screwdriver and I was able to loosen the screw

**Q: Where can I find an owners manual?**
A: Jeezus people, if the person is asking isn’t it obvious he does not have it in the box?!! The least helpful answers ever. I inherited the thermostat from a previous owner and in search for a manual, too. Guess what— no box!!

**Q: How do I put it on. I cannot program it**
A: Hi, thank you for reaching out with this. We would like to gather some more information on your specific system so that we can provide assistance on how to program. Please reach out to our support team on Facebook/Twitter with a private message. We look forward to hearing from you soon. -Jim

**Q: does this thermostat use a battery for power? and how long should the battery last if it needs one**
A: Hi there, this thermostat requires 2 AAA batteries, battery life depends on the usage, we recommend replacing batteries at least every year. - Maria

## Frequently Bought Together

- Honeywell Home RTH221B1039 1-Week Programmable Thermostat
- 24V 40VA Control Transformer， Primary 120, 208, 240V Secondary 24V Isolation Transformers，24V Transformer with Foot Mount for HVAC Furnace Multi Tap

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-26*