How Long Does It Take to Install a Furnace in an Older Home?

Furnace installation can come with some unique challenges, especially if you live in an older Waco area home. When you plan to install a new furnace in an older home, you might wonder how long the installation process will take. Evergreen Heating and Cooling looks at how long it typically takes to install a furnace in an older home and some factors that can affect the process. 

How Long Does Furnace Installation Usually Take?

If you’re considering a new furnace installation, you might wonder how long the process will take. The answer depends on a few factors, such as the size of your home and the type of furnace unit you choose. However, most furnace system installations can be completed in four to ten hours.

The first step is to have a professional come to your home to assess your heating needs and take measurements. Once you’ve chosen the right furnace for your home, the next step is to install it. This involves connecting the furnace unit to your home’s ductwork and electrical system. The final step is to test the unit to make sure it’s working properly. In most cases, the entire furnace installation process can be completed in just one day.

Installation Considerations for Older Homes

In older homes, furnace installation isn’t always as straightforward as it often is in newer homes. Here are some of the considerations that can impact furnace installation in your older Waco area home.

Fuel Source

Many homeowners choose an energy-efficient gas furnace for their homes, but this can be a challenge if you don’t have a gas line installed in your home. If you are having a gas furnace installed, you’ll need to make sure you have gas lines run to make the connection. However, if you don’t have access to gas lines and still want a furnace, you can still heat your home. Electric furnaces are a great option in the Waco area. An electric furnace system is more energy efficient, but they do have some downsides. Electric furnaces are slower to heat your home than gas furnaces, and if the power goes out, so will your furnace. 


Depending on the age of your home and former heating system installations, your home may not have any ductwork installed. Ductwork is a system of airflow passages and vents used by a central heating system, such as a conventional furnace or heat pump, to circulate heated air throughout a home. 

If your home does not currently have ductwork installed or it is not in good condition, it will be necessary to install a new duct system for the new furnace. One of the biggest challenges is that older homes often don’t have enough space to accommodate the ductwork. This can be a problem because the ductwork needs to be installed in a way that allows for proper airflow. Another challenge is that older homes often have plaster walls, which can make it difficult to install the ductwork without causing damage. Finally, you may also find it challenging to find somewhere to put the ductwork that won’t be disruptive to your home’s aesthetic. 

Despite these challenges, however, installing ductwork in an older home is definitely possible when you work with a skilled HVAC company. The duct installation process will add considerable time to your furnace installation project as well as the furnace replacement cost. Installing ducts can take two to three days, but this can take longer in older homes that require considerable alterations to accommodate the new ducts.

Removing Old Infrastructure

Some older homes were built with a boiler and radiators to heat the house. While this system is effective, it can be expensive to operate and maintain. Additionally, the boiler, pipes, and radiators can take up a lot of space in the home, making it difficult to use the room for other purposes. For these reasons, many homeowners opt to remove the boiler and install a furnace instead. 

Removing the pipes and radiators along with the old boiler requires much more time and labor than simply taking out an old furnace. Doing so can add a day to a week to your furnace installation, depending on the extent of the removal. For this reason, some homeowners elect to leave the piping system and radiators in place.

If you’re replacing your current furnace, your old one will need to be removed first. Furnace removal and disposing of are often included with your furnace installation service. 

Furnace Installation Services in Waco, TX

Installing a furnace in an older home can be a daunting task. It is important to have the right professional to do the job to make sure everything goes smoothly. Make sure you look for an HVAC company that is experienced and certified in electric and gas furnace installation. Don’t just buy any furnace, either. Ensure that your HVAC technician gives you a proper estimate for the entire furnace installation project, including ductwork and removal of old equipment. They should also be able to help you find the correct furnace that is the right size and efficiency to fit your budget. 

Contact Evergreen Heating and Cooling Today!

Contact Evergreen Heating and Cooling for all of your furnace installation needs. We can provide you with your first estimate, or for a second opinion.  Our team of certified professionals will make sure the job is done properly, and on time.

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401 S 13th St,
Waco, TX 76706





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