How to Adjust Honeywell Thermostats Aux Heat? – Easy Guide

To adjust Honeywell thermostats Aux Heat, navigate to the settings menu and increase the temperature differential. This will engage the auxiliary heating when needed.

Are you looking to optimize your home heating system for maximum comfort and efficiency? Adjusting your Honeywell thermostat’s Aux Heat settings can help you achieve just that. By making simple tweaks to the temperature differential in the settings menu, you can ensure that your auxiliary heating kicks in when required, keeping your space cozy during colder weather.

Understanding how to adjust these settings can make a significant difference in your overall heating experience. Let’s explore the steps to fine-tune your Honeywell thermostat for optimal performance.

Introduction To Honeywell Thermostats And Aux Heat

Learn how to adjust Honeywell thermostat’s aux heat for optimal comfort and energy efficiency. With simple steps, you can easily program your Honeywell thermostat to effectively manage the auxiliary heat, ensuring a cozy indoor environment while keeping energy costs in check.

Honeywell thermostats are known for their reliability and advanced features that make them one of the best options for controlling your home’s heating and cooling system. One of the key features of Honeywell thermostats is the Aux Heat function, which can be a bit confusing for those who are new to the system.

In this article, we’ll take a closer look at what Aux Heat is and how to adjust it on your Honeywell thermostat. We’ll also explore the benefits of using Honeywell thermostats and why they’re a great investment for your home.

What Is Aux Heat?

Auxiliary heat, or Aux Heat, is a backup heating system that kicks in when your primary heating system is unable to keep up with the demand. This is usually triggered when the temperature outside drops below a certain point, and your primary heating system can no longer maintain the desired temperature inside your home.

When this happens, the Aux Heat system takes over and provides additional heat to keep your home warm and comfortable. Adjusting the Aux Heat on your Honeywell thermostat is important to ensure that your home stays at the right temperature, no matter what the weather is like outside.

Here are some simple steps to adjust the Aux Heat on your Honeywell thermostat:

  1. Press the “Menu” button on your Honeywell thermostat.
  2. Select the “Settings” option.
  3. Choose “Auxiliary Heat” and adjust the temperature settings as needed.
  4. Save your changes and exit the menu.

Benefits Of Using Honeywell Thermostats

There are many benefits to using Honeywell thermostats in your home. These include:

  • Energy savings: Honeywell thermostats are designed to help you save energy and reduce your energy bills. By using advanced features like programmable schedules and temperature sensors, you can ensure that your home is only heated or cooled when it needs to be.
  • Easy to use: Honeywell thermostats are designed to be user-friendly and easy to use. With intuitive controls and clear displays, you can easily adjust your home’s temperature settings and monitor its energy usage.
  • Advanced features: Honeywell thermostats come with a range of advanced features, such as Wi-Fi connectivity, voice control, and smart home integration. These features allow you to control your home’s heating and cooling system from anywhere, using your smartphone, tablet, or voice commands.
  • Reliability: Honeywell thermostats are known for their reliability and durability. They’re built to last and can withstand years of use without needing to be replaced.

By investing in a Honeywell thermostat for your home, you can enjoy all of these benefits and more. Whether you’re looking to save energy, improve your home’s comfort, or simply make your life easier, a Honeywell thermostat is an excellent choice.

Identifying Your Honeywell Thermostat Model

When adjusting the Honeywell Thermostats Aux Heat, it is crucial to first identify your specific thermostat model. Different models come with varying features and settings, so knowing your model is essential for making the correct adjustments.

Different Models And Their Features

There are several Honeywell thermostat models available, each with its unique features tailored to different heating and cooling systems. Some common models include:

Thermostat Model Features
T5 7-Day Programmable Thermostat Customizable programming options for each day of the week.
Lyric T6 Pro Wi-Fi Thermostat Wi-Fi connectivity for remote access and control via a smartphone app.
FocusPRO 5000 Non-Programmable Thermostat Straightforward manual control without programming capabilities.

Locating The Model Information

To find out your Honeywell thermostat model, you can check the device itself or the accompanying documentation. The model information is typically located on the front or back of the thermostat or in the user manual. If you have trouble locating the model number, you can contact Honeywell customer support for assistance.

Common Issues With Aux Heat In Honeywell Thermostats

Common Issues with Aux Heat in Honeywell Thermostats

Aux Heat Not Turning On

If your Honeywell thermostat’s auxiliary heat is not turning on when needed, there are a few potential causes to consider:

  • Thermostat settings may be incorrect or not configured to activate the auxiliary heat
  • A malfunctioning heat pump or auxiliary heat components
  • Incorrect wiring or connections

Aux Heat Running Constantly

When the auxiliary heat in your Honeywell thermostat runs constantly, it can lead to energy inefficiency and higher utility bills. This issue may stem from:

  1. Faulty temperature sensor or thermostat settings
  2. Improper heat pump operation, leading to reliance on auxiliary heat
  3. Inadequate insulation or air leaks in the home

Basic Troubleshooting Steps Before Adjusting

Before making adjustments to your Honeywell thermostat’s aux heat, it’s crucial to conduct basic troubleshooting steps to ensure optimal performance. By following these simple steps, you can potentially resolve issues without the need for major adjustments.

Checking The Thermostat Settings

Ensure that the thermostat is set to the correct mode, whether it’s heating, cooling, or off. Check the temperature settings to verify that they are appropriate for the current conditions. Inspect the fan settings to ensure they are configured as desired.

Ensuring Proper Power Supply

Verify that the thermostat has a stable power supply. Check the power source and confirm that the thermostat’s batteries, if applicable, are functioning properly. Inspect the wiring to ensure there are no loose connections or damaged components.

Step-by-step Guide To Adjust Aux Heat Settings

Adjusting the auxiliary (aux) heat settings on your Honeywell thermostat is crucial for maintaining optimal comfort and energy efficiency in your home. This step-by-step guide will walk you through the process of accessing the settings menu and adjusting the aux heat threshold to ensure your thermostat operates as efficiently as possible.

Accessing The Settings Menu

To access the settings menu on your Honeywell thermostat, follow these simple steps:

  1. Press the “Menu” button on the thermostat.
  2. Use the arrow keys to navigate to the “Settings” option.
  3. Press the “Select” button to enter the settings menu.

Adjusting The Aux Heat Threshold

Once you have accessed the settings menu, you can proceed to adjust the aux heat threshold by following these steps:

  1. Navigate to the “Auxiliary Heat” option in the settings menu using the arrow keys.
  2. Press the “Select” button to enter the aux heat settings.
  3. Use the arrow keys to adjust the threshold temperature to your desired setting.
  4. Press the “Done” button to save your changes and exit the settings menu.

Advanced Troubleshooting Techniques

When it comes to adjusting Honeywell thermostats’ aux heat, advanced troubleshooting techniques can be essential. These techniques enable users to address complex issues and optimize the thermostat’s performance.

Resetting The Thermostat

To reset the thermostat, follow these simple steps:

  1. Access the thermostat’s menu by pressing the “Menu” button.
  2. Navigate to the “Preferences” option and select “Restore Defaults.”
  3. Confirm the reset by selecting “Yes” when prompted.

Firmware Updates And Their Impact

Firmware updates can significantly impact the thermostat’s functionality. To ensure optimal performance:

  • Check for firmware updates regularly to stay current with the latest enhancements.
  • Follow the manufacturer’s instructions for installing firmware updates to avoid potential issues.

When To Seek Professional Help

To adjust Honeywell thermostats Aux Heat, seek professional help for optimal functionality and energy efficiency. Proper calibration ensures seamless operation and cost savings in the long run. Consulting experts guarantee accurate settings tailored to your specific heating needs.

Issues Beyond Basic Troubleshooting

  • For more complex problems beyond basic troubleshooting, it’s crucial to seek professional help.
  • Qualified technicians can accurately diagnose issues beyond your expertise.

Finding A Qualified Technician

  • Look for technicians certified by Honeywell for specialized knowledge.
  • Ensure the technician has experience with your specific thermostat model.
  • Check for customer reviews to gauge their reputation and reliability.
  • In case of recurring issues or unfamiliar error codes, contact a professional.
  • If your thermostat fails to respond after troubleshooting, seek expert assistance.

Maintaining Your Honeywell Thermostat For Optimal Performance

For optimal performance, adjusting the aux heat on your Honeywell thermostat is crucial. Ensure proper function by setting the auxiliary heat option according to your heating needs. Regularly maintain your thermostat to guarantee efficient operation and comfortable indoor temperatures.

Maintaining Your Honeywell Thermostat for Optimal Performance Your Honeywell thermostat is a crucial component of your home’s heating and cooling system. It helps you regulate the temperature and ensures that you are comfortable all year round.

However, to ensure that your thermostat functions optimally, you need to perform regular maintenance and seasonal adjustments. Regular Maintenance Tips Regular maintenance of your Honeywell thermostat is essential for its optimal performance. Here are some tips to follow:

  • Clean the thermostat regularly with a soft, dry cloth to remove any dust or debris that may have accumulated on it.
  • Check the battery level of your thermostat regularly and replace the batteries if they are running low.
  • Ensure that the thermostat is mounted on a level surface and away from any heat sources, such as direct sunlight or heating vents.
  • Check the wiring connections of your thermostat periodically to ensure that they are tight and secure.

Seasonal Adjustments for Aux Heat

During the colder months, you may need to adjust your Honeywell thermostat to maintain a comfortable temperature in your home. Here are some seasonal adjustments to make:

  • Set your thermostat to the lowest comfortable temperature during the day and reduce it further at night.
  • Activate your thermostat’s auxiliary heat function to supplement your primary heating system if necessary.
  • If you have a heat pump, set your thermostat to “emergency heat” mode during extreme cold weather to ensure that your home stays warm.

In conclusion, regular maintenance and seasonal adjustments are crucial for maintaining the optimal performance of your Honeywell thermostat. By following these tips, you can ensure that your thermostat functions properly, and you stay comfortable all year round.

Frequently Asked Questions

What Is The Aux Heat Setting On A Honeywell Thermostat?

The aux heat setting on a Honeywell thermostat activates the auxiliary heat source to provide additional warmth when needed.

What Should My Aux Heat Be Set At?

Set your aux heat to a temperature higher than your desired indoor temperature for efficient operation.

Does The Thermostat Control Auxiliary Heat?

Yes, the thermostat can control auxiliary heat to supplement the primary heating system.

Why Does My Honeywell Thermostat Keep Switching To Aux Heat?

Your Honeywell thermostat may switch to aux heat if the temperature drops too low or if the system is not functioning properly. Check the temperature settings, ensure the unit is clean, and consider scheduling a maintenance appointment with a professional.


Adjusting Honeywell thermostats Aux Heat is crucial for efficient heating. By following simple steps, you can optimize your thermostat settings for comfort and energy savings. Don’t forget to consult the manual for specific instructions tailored to your thermostat model. Keep your home cozy and cost-effective!

Scott Maupin