How to Unlock Venstar Thermostat

Have you ever walked into your home and realized your thermostat is locked and you can’t adjust the temperature? Maybe the kids were playing with it, or the settings were accidentally changed. Whatever the reason, finding yourself without control of your home’s temperature can be frustrating. 

How to Unlock Venstar Thermostat

In this post, I will walk through how to unlock a Venstar thermostat, the most common type of WiFi-enabled touchscreen thermostat in homes today. By following the simple steps on how to unlock Venstar thermostat outlined below, you’ll be back in the driver’s seat of your home’s heating and cooling in no time. I’ll explain where the lock feature is located on the touchscreen, share the password reset process, and provide troubleshooting tips if you run into any issues. So, if you’re currently stuck with a locked thermostat, read on to quickly get yourself and your family comfortable again.

Necessary Items

Before we dive into the steps to unlock your Venstar thermostat, let’s ensure you have all the necessary items. To complete this process, you will need:

  • Your locked Venstar thermostat
  • WiFi connection and password (if using a WiFi-enabled thermostat)
  • A small pin or paperclip
  • Access to the Venstar app (optional)

10 Steps on How to Unlock Venstar Thermostat

Step 1: Unlocking the Screen

The first step in unlocking your Venstar thermostat is to turn on the screen. If you have a WiFi-enabled touchscreen thermostat, you may need to press and hold down the “Menu” button for a few seconds until the screen turns on.

Step 2: Find the Lock Icon

Next, look for a small lock icon on the screen’s bottom left or right corner. This icon indicates that your thermostat is currently locked.

Look for a Small Lock Icon

Step 3: Press and Hold the Lock Icon

Press and hold down the lock icon for a few seconds until a pop-up window appears. This is where you will enter the password to unlock your thermostat.

Step 4: Enter Password

The default code is usually “4321” if you have never set a password. If that doesn’t work, try the last four digits of your thermostat’s serial number. If you have previously set a password, enter that code instead.

Step 5: Unlocking Menu Options

Once you have entered the correct password, another pop-up window will notify you that the screen is unlocked. You should also see that more menu options are available on the touchscreen.

Step 6: Resetting Password

Suppose you want to reset the password; press and hold down the lock icon again for a few seconds. This time, enter your new desired password and confirm it when prompted.

Enter Your New Desired Password

Step 7: Verify Password Change

To confirm the password has been changed, try unlocking the touchscreen again with your new code. If it works, you have successfully changed the password.

Step 8: Using the Venstar App

If your thermostat is connected to WiFi and you have downloaded the Venstar app, you can also unlock your thermostat through the app. Open the app, select your thermostat, and choose the “Unlock” option.

Step 9: Troubleshooting Tips

If you need help unlocking your Venstar thermostat, make sure you are entering the correct password. If you have forgotten your password, try using “4321” or the last four digits of the serial number, as mentioned before. If those do not work, contact Venstar customer service for assistance.

Step 10: Final Notes

Now that your thermostat is unlocked and you have complete control over the temperature settings keep your password safe if this happens again. You can adjust or remove the lock feature by entering the “Installer Settings” menu. And remember to check for any software updates for your thermostat regularly to ensure it functions properly.

Unlocking a Venstar thermostat is a simple process that only takes a few steps. Remember always to have your password on hand and keep it in a secure location. With these tips and tricks, you can easily unlock your thermostat and maintain a comfortable home temperature all year round.

8 Things to Avoid with Your Thermostat

Now that you know how to unlock your Venstar thermostat, it’s also important to know what not to do with it. Here are eight things to avoid when using your thermostat:

1. Setting the Temperature Too High or Too Low

Setting the temperature too high or too low can put unnecessary strain on your HVAC system and increase your energy bills. The recommended temperature range is between 68-72 degrees Fahrenheit in the winter and 74-78 degrees Fahrenheit in the summer.

2. Constantly Adjusting the Temperature

Constantly adjusting the temperature throughout the day can also cause extra stress on your HVAC system and decrease its efficiency. Find a comfortable temperature and try to stick with it.

Find a Comfortable Temperature

3. Blocking Air Vents

Blocking air vents with furniture or other objects can prevent proper airflow and cause your HVAC system to work harder than necessary. Make sure to keep all vents clear for optimal performance.

4. Neglecting Regular Maintenance

Skipping regular maintenance for your HVAC system can lead to more significant issues down the line and decrease its lifespan. Make sure to schedule yearly check-ups with a professional.

5. Forgetting to Change the Air Filter

A dirty air filter can hinder your HVAC system’s performance and lead to poor indoor air quality. Change your filter every one to three months, depending on usage.

6. Turning the Thermostat Off When Leaving for a Short Time

Turning off your thermostat when leaving for a short time would save energy, but it can cause your HVAC system to work harder to reach your desired temperature again. It’s best to leave it at a consistent temperature.

7. Setting Extreme Temperatures While on Vacation

While it may be tempting to set the temperature very high or low while on vacation, this can also strain your HVAC system unnecessarily. Keep the temperature within a reasonable range to prevent any issues.

8. Ignoring Strange Noises or Smells

If you notice strange noises or smells coming from your HVAC system, do not ignore them. These could be signs of a more significant issue and should be addressed by a professional.

By avoiding these eight common mistakes, you can ensure that your HVAC system stays in top working condition and save money on energy bills in the long run.  With proper care and maintenance, your Venstar thermostat will continue to provide you with comfortable temperatures year after year. 

Frequently Asked Questions

Can I Lock My Venstar Thermostat Again After Unlocking It?

Yes, you can re-lock your thermostat by pressing and holding the lock icon and entering a new password. 

How Often Should I Schedule Maintenance for My HVAC System?

It’s recommended to schedule maintenance at least once a year, ideally before the winter and summer months, when your system will be used the most.

Can I Use the Venstar App to Change My Password?

No, you cannot change your password through the app. You must use the touchscreen on your thermostat to change the password.

How Do I Change the Temperature on My Venstar Thermostat?

To change the temperature, simply press the up or down arrows on the touchscreen until you reach your desired temperature. You can also do this through the Venstar app if your thermostat is connected to WiFi.

Do This Through the Venstar App

Can I Unlock My Thermostat Without a Password?

No, a password is required to unlock your Venstar thermostat.

How Do I Know If My Thermostat Is Locked?

If your thermostat has a lock icon on the screen, it is currently locked. If there is no lock icon, it is unlocked.

Can I Still Adjust the Temperature While the Thermostat is Locked?

Yes, you can still adjust the temperature while the thermostat is locked. However, any changes made will only be saved if the thermostat is unlocked.

Is It Possible to Disable the Lock Feature?

Yes, you can disable the lock feature by going into the “Installer Settings” menu and selecting “No” for the “Locking Options” setting. Remember that this will permanently remove the lock feature from your thermostat and cannot be undone.


In this guide, we discussed how to unlock Venstar thermostat and covered some essential tips for using your thermostat effectively. Remember always to keep your password in a secure location and avoid common mistakes such as setting extreme temperatures or neglecting maintenance. By following these guidelines, you can ensure that your Venstar thermostat works efficiently for years. To wrap it up, unlocking the Venstar thermostat is easier than it seems and requires just a few steps. 

It’s a great way to control your heating and cooling system while potentially saving you money. We hope this tutorial has been helpful and that you now feel empowered to unlock the Venstar thermostat. Don’t hesitate to contact an HVAC specialist for further advice and tips on using your Venstar thermostat. With a little bit of learning, you can maximize the performance of your HVAC system while also keeping control over temperatures and energy costs! So go ahead and get started with unlocking your Venstar thermostat today!

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