Installing a furnace can be a daunting task, especially if you have no prior experience in HVAC work. One of the most common questions asked by homeowners is, “How many people does it take to install a furnace?” The answer isn’t as straightforward as you may think. The number of people needed to install a furnace depends on several factors, including the size and weight of the furnace, the complexity of the installation, and the experience and expertise of the installers. In this article, we’ll delve deeper into this question to help you understand what to expect when it comes to installing a furnace.

1. Importance of Proper Furnace Installation and Maintenance

Proper furnace installation and maintenance play a crucial role in the comfort and safety of your home. A well-installed and well-maintained furnace ensures that you and your family are warm and comfortable during the cold months, and also reduces the risk of carbon monoxide poisoning, which can be fatal.

It’s essential to ensure that your furnace is properly installed to prevent issues such as poor ventilation, gas leaks, and other hazards that may arise when it’s not installed correctly. Additionally, regular maintenance of your furnace ensures that it operates efficiently, saving you money on energy costs, and prolonging its lifespan.

Therefore, it’s important to hire a reputable HVAC company to handle your furnace installation needs and conduct regular maintenance checks to keep your furnace in top condition. DIY installation and maintenance may seem like a cost-saving option, but it can lead to costly repairs, accidents, and even fatalities.

Takeaway point: Proper furnace installation and maintenance are crucial for keeping your home warm and safe. Hiring a professional HVAC company to handle your furnace installation and maintenance needs is the best way to ensure that everything is done correctly and efficiently.

2. Factors That Determine the Number Of People Needed to Install a Furnace

Installing a furnace in your home is a significant investment that requires proper planning and preparation. One of the essential considerations is determining the number of people needed for the installation process. The number of people required for furnace installation varies depending on several factors. In this section, we’ll be discussing some of these factors.

The Size of Your Home

The size of your home can determine the number of people needed for furnace installation. Larger homes with more rooms and levels may require more workers to ensure an efficient and timely installation process. In contrast, smaller homes may require only one or two workers.

The Type of Furnace Being Installed

The type of furnace you’re installing also plays a significant role in determining the number of people needed for installation. If you’re installing a larger, more complex heating system, you may require additional workers to complete the project. On the other hand, a simple and small system may only need one worker.

Accessibility of Your Home

The accessibility of your home is another crucial factor to consider. If your home is challenging to access, such as if it’s located on steep terrain, your system may require additional manpower to access the site and complete the installation process.

In conclusion, the number of people required for furnace installation depends on several factors. Understanding these factors can help you plan and prepare for your installation project. Always ensure you hire qualified and experienced HVAC professionals to handle your furnace installation project for the best results.

3. Best Practices for Preparing Your Home for Furnace Installation

Before the furnace installation team arrives, there are a few things you can do to ensure the process runs smoothly. These best practices will help you save time and money, avoid potential installation issues, and prepare your home for the new furnace.

Clear the Area Around the Furnace

It’s essential to ensure the area around your furnace is unobstructed. The furnace requires enough space for the installation process, and having items in the way may create a safety hazard for the installation team. Clear out any items or belongings near the furnace carefully. Move any furniture, decor, or other items that may impede the installation process to another room or place.

Ensure Good Airflow Around the Furnace

To ensure the furnace is functioning correctly and efficiently, it needs plenty of unobstructed airflow. Make sure the furnace is easily accessible, and there is enough space to allow for efficient airflow. You may also consider vacuuming the furnace and air registers to remove any dirt or dust accumulation. This will help prevent obstructions that may reduce the furnace’s efficiency or even damage it.

Provide Easy Access to the Furnace Area

The furnace installation team will need to access various areas around your home, such as the electrical panel, gas supply, and other components that connect to the furnace. Ensure these areas are easily accessible by removing any obstacles or hurdles. Additionally, it’s important to inform the installation team of the location of any components and appliances that could affect the furnace’s performance.

By following these best practices, you’ll help the installation team complete the work efficiently and effectively. This will ensure that your furnace is installed properly for optimal performance and longevity, saving you time and money in the long run.

4. Understanding the Process of Installing a Furnace and What to Expect

Installing a furnace involves several steps that should be undertaken with utmost attention to detail for best results. The installation process typically takes several hours and involves the following steps:

1. Disconnecting the Old Furnace

The first thing that your HVAC technician will do is disconnect and remove your old furnace. This includes draining the fuel tank, turning off the power supply, and removing the ductwork. This may take some time, depending on the type of furnace and your home’s layout.

2. Preparing the Installation Site

Once your old furnace is removed, your technician will clean and prepare the site for the new furnace. This includes clearing any debris and ensuring that the furnace pad is level and stable. The technician will also ensure that all necessary connections and components, such as gas pipes and electrical wiring, are in place.

3. Fitting the New Furnace

The new furnace will be fitted into place and secured onto the furnace pad. The technician will then install the ductwork, making sure that there is proper ventilation and routing the ducts to the rooms in your home.

4. Connecting Fuel Lines and Electrical Wiring

If you’re installing a gas furnace, your technician will install a new gas line and connect it to the furnace. They will also connect the electrical wiring to the furnace, ensuring that all connections are secure and in compliance with local codes and safety standards.

5. Testing and Start-Up

Once the installation is complete, the technician will thoroughly test the furnace to ensure that it is operating safely and efficiently. They will also calibrate the thermostat and explain how to operate the furnace and the thermostat.

By following these steps, your furnace installation should be successfully complete! Don’t hesitate to ask your technician any questions you may have during the process.

5. Cost-Saving Tips for Furnace Installation and Maintenance

Cutting down on costs during furnace installation and maintenance without compromising on quality is an important consideration for homeowners. Here are some cost-saving tips that you can follow for furnace installation and maintenance:

Budgeting and Planning

Planning ahead can help you save on costs. When budgeting for furnace installation, ensure to take into account all associated expenses, including permits, labor costs, materials, and any additional fees. This way, you can avoid any unanticipated expenses that may arise during the installation or maintenance process.

Regular Maintenance

Regular maintenance of your furnace can help reduce the chances of excessively high repair or replacement costs. Schedule an annual maintenance checkup with a professional technician to avoid any potential problems and ensure that your furnace is running optimally. Regular maintenance also helps prolong the lifespan of your furnace, ensuring that you don’t have to replace it prematurely.

Choose Energy-Efficient Furnaces

Energy-efficient furnaces can help reduce your energy bills over the lifespan of your furnace. These furnaces are designed to consume less energy while still providing adequate heating to your home. Look for Energy Star qualified furnaces when purchasing a new furnace. They are proven to save up to 15% more energy than conventional models, leading to reduced energy bills in the long run.

Following these cost-saving tips can help you save money during furnace installation and maintenance without compromising on the efficiency and quality of your furnace.

6. Importance of Hiring Professional Furnace Installers

It is highly recommended to hire professional furnace installers for your furnace installation needs due to several reasons. Not only it guarantees a safe and efficient installation but also saves you money in the long run. In this section, we will discuss why it is important to hire professional furnace installers and what benefits they offer.

Benefits of Hiring Professional Furnace Installers

1. Expertise and Experience: Professional furnace installers have vast experience in installing different types of furnace systems. They have the required knowledge and skills to ensure that your furnace is installed properly and efficiently. They are also familiar with local building codes and regulations, ensuring that the installation complies with all safety standards.

2. Safety: Installing a furnace can be hazardous and involves handling gas or electrical connections. Professional furnace installers are trained to handle these dangerous components and ensure that proper safety protocols are followed. They will make sure that your furnace is properly vented, preventing any hazards with carbon monoxide buildup.

3. Warranty: Most furnace manufacturers require professional installation to maintain the warranty. A professional installation ensures that the warranty is upheld in case of any defects or malfunctions in the furnace system in the future.

4. Efficient Installation: Professional furnace installers can complete the installation process quickly and efficiently, minimizing the downtime of your heating system. They also have all the necessary tools and equipment, reducing any possible damage or errors during the installation process.


In conclusion, hiring professional furnace installers is crucial for the safety and efficiency of your heating system. They have the expertise, experience, and knowledge to perform a quick and efficient installation. It also guarantees that the installation complies with all local building codes and regulations and that the warranty is upheld. With their help, you can rest easy knowing that your heating system is in good hands.

7. Common Issues to Watch Out for During Furnace Installation

It is important to note that while installing a furnace is a straightforward process, there are common issues that can arise during the installation. These issues, if not addressed promptly, can result in significant problems down the line. Here are some common issues to look out for during furnace installation:

1. Improper Venting

One of the most common issues during furnace installation is improper venting. A lack of proper venting can lead to carbon monoxide poisoning, which is a serious health hazard. Proper venting ensures that the exhaust gases are safely discharged outside without posing a risk to the occupants of the house. During installation, ensure that the venting system is properly sized, installed, and terminates outside the house.

2. Electrical Problems

Another common issue during furnace installation is electrical problems. These could include improper wiring, ground issues, or a lack of proper electrical service. It is crucial to ensure that the electrical system is in good working order and meets the required electrical codes.

3. Gas Leaks

Gas leaks are another common issue to look out for during furnace installation. Gas leaks can lead to serious health hazards and even explosions. Proper installation and maintenance of the gas line are paramount to ensure that no leaks occur.

It is important to work with a reputable and experienced HVAC contractor during furnace installation to avoid these common issues. These professionals have the necessary skills and knowledge to install the furnace safely and effectively, ensuring that all issues are identified and addressed.

People Also Ask

How long does it take to install a furnace?

The installation process of a furnace typically takes between 4 and 10 hours. The time needed may depend on the type of furnace, the complexity of the installation, the size of your home, and the number of technicians working.

Can you install a furnace yourself?

In most cases, furnace installation is not a DIY project. It requires specialized skills, experience, and equipment. Installing a furnace requires knowledge of electrical wiring, ventilation, and gas lines. It is recommended that you hire a licensed technician to do the job.

How much does it cost to install a furnace?

The cost of furnace installation varies depending on several factors, such as the type of furnace, the size of your home, and the complexity of the installation. On average, the cost can range from $2,500 to $7,500.

Should I replace the furnace and AC at the same time?

It is not always necessary to replace both the furnace and air conditioning unit at the same time. However, if your HVAC system is over 10 years old, it may be more cost-effective to replace both units at the same time to avoid compatibility issues and save on installation costs.

What is included in a furnace installation?

A typical furnace installation includes the removal and disposal of the old furnace, installation of the new furnace, connection to ductwork, electrical wiring, gas line and venting, and testing to ensure proper functionality.


Installing a furnace is not a simple project and for that reason, it requires licensed technicians. The installation time may vary depending on the complexity of the installation and the type of furnace. Replacing both the furnace and air conditioning unit at the same time can be more cost-effective in the long run, and the average cost of furnace installation ranges from $2,500 to $7,500.