7 Ways To Fix Honeywell Smart Thermostat Not Heating.

Honeywell smart thermostat
Honeywell smart thermostat

A malfunctioning thermostat during the cold season can quickly turn your home into an uncomfortably chilly place. For those relying on a Honeywell Smart Thermostat to keep their living space cozy, experiencing heating issues can be quite a hassle.

The good news is that there are some solutions that can help you get your thermostat back on track and your home feeling cozy again.

In this article, we’ll share seven tips to troubleshoot and fix the issue of your Honeywell Smart Thermostat heating problem.

Let’s dive in and ensure your Honeywell Smart Thermostat keeps you snug and satisfied throughout the cold winter days.

How To Fix Honeywell Smart Thermostat Heating Issues?

As promised, the following sections are filled with valuable tips to help you address your Honeywell thermostat’s heating problem. Be sure to follow these suggestions carefully to resolve the issue and bring warmth back to your home.

Solution 1: Check if The Furnace is Turned ON.

When you first notice that your Honeywell thermostat isn’t heating as expected, it’s a good idea to check the condition of your furnace. Start by checking if the furnace is on, and if it’s off, make sure to turn it on.

This initial step is crucial for a simple reason: the thermostat controls the furnace, and if the furnace isn’t running, your home won’t heat up.

Some may find that this simple step alone is enough to get their home heating again. However, if you are not among them, there are additional solutions to explore in the following sections.

So keep reading.

Solution 2: Increase the Temperature on The Thermostat.

The second solution we recommend is to consider increasing the thermostat temperature. There are a couple of common reasons for this.

First, it’s possible that you or someone in your household may have recently lowered the thermostat setting for various reasons, like energy-saving efforts. However, it’s easy to forget to raise it back up to a comfortable level.

So, check your device settings and make sure the temperature is where you want it to be for a warm home.

Secondly, on extremely cold days, the initial thermostat setting may not be high enough to match the frigid outdoor conditions. In such cases, increasing the temperature can help your heating system work more effectively and keep your home cozy, even in the harshest weather.

Solution 3: Keep Your Thermostat and Its Sensors Away from Heat.

It’s important to keep your thermostat and any associated sensors (if you’re using a separate sensor to track indoor temperature) away from heat sources.

This includes avoiding the placement near radiators or heating vents, sunlight exposure, space heaters and electronics that generate heat.

When sensors are exposed to heat sources, they can detect a higher temperature than the actual room temperature which leads to the thermostat lowering the temperature setting, affecting your indoor comfort.

To maintain accurate temperature control, ensure that your thermostat and sensors are positioned away from these heat sources, allowing them to provide precise readings for a more comfortable living environment.

Solution 4: Update The Firmware.

Another critical aspect of ensuring your Honeywell smart thermostat’s proper operation is keeping its firmware up to date.

When Honeywell releases a new firmware version, it often includes bug fixes and feature improvements. These updates can also address errors that may lead to heating issues, ensuring your thermostat functions as expected.

To benefit from these improvements and maintain the optimal performance of your thermostat, it’s advisable to promptly update the firmware whenever a new version becomes available.

Solution 5: Check The Wires.

Another important aspect to check when troubleshooting your thermostat is the thermostat wires. These wires play a crucial role in connecting your thermostat to your heating system. It’s essential to ensure they are in good condition, securely connected, and undamaged.

Why is this important? Faulty or disconnected wires can prevent your thermostat from communicating with your heating system, leading to heating issues.

Loose or damaged wires can disrupt the flow of information and control, making it difficult for your thermostat to regulate the temperature effectively.

However, it’s crucial to exercise caution when dealing with thermostat wires. Before inspecting or adjusting them, always turn off the circuit breaker to your heating system.

If you’re not experienced in working with electrical components, it’s best to avoid attempting this yourself. Instead, consider hiring a professional who has the expertise to handle thermostat wiring safely and effectively.

Solution 6: Reset The Device.

Another potential solution to consider is resetting your Honeywell thermostat to its original factory settings. This can be a helpful step in troubleshooting and resolving heating issues.

A factory reset can effectively clear any accumulated glitches and bugs that might be contributing to your heating issues, restoring your thermostat to a fresh start.

However, it’s important to note that performing a factory reset will delete all your thermostat settings and preferences. This means you’ll need to start from scratch, reconfiguring your temperature preferences, schedules, and any other customizations.

Solution 7: Call for Help.

If you’ve tried the previous solutions and your Honeywell thermostat is still not heating properly, it might be time to consider seeking professional help. A specialist can come to your home to inspect both your thermostat and your HVAC system.

Sometimes, issues can be complex or require specialized knowledge, and calling in a professional can save you time and frustration while ensuring your home remains comfortably heated.


As we have seen in this blog post, there are many reasons why your Honeywell smart thermostat is not heating properly. So make sure to read this article carefully to try to determine which solution works for you.

Adam B