How to Fix an Oversized Furnace

Are you having trouble with your oversized furnace? Do you feel like the cost to repair or replace it is too high? You may be able to fix an oversized furnace yourself! Fixing an oversized furnace doesn’t have to be complicated or expensive. In this guide, we will go through the process of fixing an oversized furnace step-by-step process. Read more to learn how to fix an oversized furnace!

How to Fix an Oversized Furnace

An oversized furnace is a common issue for many homeowners. An undersized unit may not be able to keep up with the demand of your home, leading to uneven temperatures and higher energy bills. On the other hand, an oversized furnace will run too frequently and waste energy.

Fortunately, there are some easy steps you can take to fix an oversized furnace and make sure it is running efficiently. With the right tools and some patience, you can easily fix an oversized furnace in no time.

Why is It Important to Fix an Oversized Furnace?

1. To Prevent Uneven Temperatures

One of the main reasons why it is important to fix an oversized furnace is to prevent uneven temperatures in your home. An oversized furnace can cycle on and off too quickly, creating temperature fluctuations that can be uncomfortable for you and your family.

2. To Improve Efficiency

An oversized furnace also has the potential of being less energy efficient than one sized correctly for your home’s needs. This is because it will consume more fuel than necessary in order to provide the heat you require, resulting in increased energy bills and a greater environmental impact.

3. To Reduce Wear and Tear

A furnace that is too large for your home can also wear out faster due to the extra strain it’s putting on its components. This can result in costly repairs that could easily have been avoided if the furnace was sized properly for your home’s needs. So, it’s important to fix an oversized furnace, not only for your family’s comfort but also to save money on energy bills and future repair costs.

Furnace Was Sized Properly for Your Home Needs

To ensure you get the right size furnace for your home, you should consult a professional HVAC technician who can assess your needs and provide advice on furnace sizing. They will also be able to suggest any necessary repairs or modifications that may be required to fix an existing oversized furnace.

How to Fix an Oversized Furnace in 5 Easy Steps

Step 1: Check Your Furnace Settings 

The first step in fixing an oversized furnace is checking your thermostat settings. This will help you determine if the furnace is set to run too hot or not. If it is, then you will need to adjust it so that it runs at a lower temperature.

Step 2: Clean Your Furnace 

Cleaning your furnace is essential to get rid of any dirt and debris that might have built up over time. This debris can cause the furnace to run too hot. Cleaning your furnace will help it run more efficiently and reduce the risk of an oversized furnace.

Step 3: Adjust Your Furnace Blower 

If your blower is set too high, this could be causing your furnace to run hotter than necessary. Try reducing the speed of the blower so that it runs at a lower intensity. This should help reduce the temperature of your furnace and improve its efficiency.

Step 4: Check Your Ductwork 

If your ductwork is blocked or damaged, this can cause the air from your furnace to build up in certain areas of your home. This will lead to an oversized furnace as the hot air will have nowhere to go. Check your ductwork for any blockages or damage and replace or repair it as needed.

Step 5: Schedule a Professional Inspection 

If you’ve tried all of the above steps and are still having problems with your oversized furnace, then it’s time to call in a professional. An experienced HVAC technician will be able to inspect your furnace and determine what needs to be done to fix it. They will also offer suggestions on how to better maintain your furnace in the future so that you can avoid any further issues with an oversized furnace.

Experienced HVAC Technician Will Be Able to Inspect

Following these five steps should help you quickly and easily fix an oversized furnace. Remember, if you are having any difficulty with your furnace, it’s always best to call in a professional. They will be able to determine the root cause of the problem and provide better solutions. It’s also important to regularly maintain your furnace so that future problems can be avoided.

Some Additional Tips to Fix an Oversized Furnace

1. Avoid Using the Furnace to Heat a Room That is Too Large

One of the concerns that should be addressed when fixing an oversized furnace is to make sure that it isn’t used to heat a room that is too large. If the furnace has been designed for a certain size of room, then using it in a larger space can lead to overworking and burning up the system quickly. Whenever possible, use other methods such as space heaters or regulators to help with heating the larger rooms.

2. Consider Making Adjustments to the Blower Motor

Another potential solution for an oversized furnace is to make adjustments to the blower motor. By adjusting or replacing it with a smaller motor, it will be able to run more efficiently and not overwork itself as much. This should also help to reduce the size of the furnace as well.

3. Install a Variable-Speed Blower Motor

For an even better solution, consider installing a variable-speed blower motor. This type of motor is able to adjust its speed and output based on the varying temperatures in the room or house it’s heating. It can also be programmed to only run when needed, which will help reduce the amount of energy used and make the furnace more efficient.

4. Use Insulation in the Home

Finally, another great way to fix an oversized furnace is to use insulation in the home or room that it’s heating. This can help keep the cold air from entering the room and will make it easier for the furnace to heat the space more effectively. It also helps in reducing energy use, as well as keeping warm air inside the home.

Use Insulation in the Home or Room

By following these tips, homeowners should be able to fix an oversized furnace and get it running at its optimal performance level again. With a little bit of effort, an oversized furnace can be fixed and kept running efficiently for years to come.

Frequently Asked Questions

What Precautions Should I Take Before Attempting to Fix an Oversized Furnace?

It is important to take safety precautions before attempting to fix an oversized furnace. Make sure you first turn off the power source and gas shutoff valve, then wear protective clothing such as gloves, goggles, and a mask. Additionally, it’s wise to have a fire extinguisher nearby in case of an emergency.

What Are Some Possible Reasons My Furnace Is Oversized?

There are several possible explanations for why your furnace may be oversized. For example, the size of your home or building may have changed since the installation of the previous unit. Additionally, a poorly designed system or incorrect measurements at installation could also be to blame.

How Can I Accurately Determine the Size of My Furnace?

The square footage of your home or building is the best way to determine the proper size of your furnace. Additionally, it’s important to factor in certain details such as the number and type of windows, ceiling height, insulation quality, and local climate.

How Do I Fix an Oversized Furnace?

The first step in fixing an oversized furnace is to determine the correct size for your home or building. Once you have done this, you can either install a new unit that meets your needs or work with a certified technician to adjust the existing system to properly match your particular needs. Doing this will help ensure that your furnace is working efficiently and safely.

Install a New Unit That Meets Your Needs

What Are the Benefits of Fixing an Oversized Furnace?

Fixing an oversized furnace can have several benefits. By correcting the size, you may be able to reduce energy costs, improve air quality and comfort levels, extend the life of major components, reduce noises from the system, and avoid any safety risks associated with an oversized furnace.

Conclusion

Now you know how to fix an oversized furnace. This should not be a difficult task, but it is important to make sure that the steps are followed correctly. Always refer to your manufacturer’s instructions when making any changes to your furnace. If you need assistance, contact a professional HVAC technician for help. 

With careful consideration and attention to detail, you can ensure your furnace is operating safely and efficiently. By following these steps, your furnace will be back in proper working condition. You can then enjoy the warmth and comfort of your home with confidence. Thanks for reading! Good luck fixing your oversized furnace!

You Can Also Check This Out to Fix a Running Toilet Without a Ball Float

Photo of author

Terry Alexander

Hi, I am Terry. I started my professional life as a handyman and did a lot of external and internal repair of home and plumbing support. From my childhood, my passion for home repair and fixtures created an opportuinity to pursue a career in HVAC and plumbing industry. As I gained years of knowledge and my love for plumbing grew overtime, I thought to document my journey so that I could help others who ran into daily problems in their home repair. Hopefully it will help you fix those pesky home repair and plumbing problems that always seem to happen at the worst time possible!

Leave a Comment