5 Tips on How to Install Your Furnace

5 Tips on How to Install Your Furnace 05 Nov

A furnace is a home heating system that comes in handy during colder seasons. The last thing any homeowner wants is to experience a malfunctioning heating system. This significant investment is designed with a thermostat to detect the rise or fall of temperature in a room and control this by heating the air. Ultimately, a furnace ensures the comfort of your family and lowers your energy costs.

However, a furnace needs to be professionally installed from the beginning. Otherwise, poor installation can compromise your family’s safety, decrease efficiency, and cause other significant problems. Additionally, there is a need for furnace repair and maintenance to ensure it runs smoothly.

For this reason, it is advisable to hire a qualified HVAC professional to perform the proper and effective installation. However, if you want to undertake a do-it-yourself project, you need to know how to install the unit as easy as possible. Below are a few tips to guide you.

Choose your Furnace

There are three types of furnaces in the market to choose from, depending on your needs and budget. It would be best if you put a lot of thought when selecting a furnace for your home’s needs. The three types of furnaces in the market include electric, gas, and oil furnaces.

Electric furnaces are considerably small and extremely easy to install. These home heating systems are also energy efficient and work best in areas that don’t encounter harsh winter weather.

On the other hand, gas furnaces are standard among most homeowners and are ideal for areas with intense winter weather. They are energy efficient and can quickly heat your home. Although they are expensive to install than electrical models, they have lower operating costs. However, it’s important to note that these heating systems come with extra expenses like regular maintenance, annual inspections, and replacing filters.

Just like gas models, oil furnaces also do well in areas with harsh winter climate. Because they use oil, these systems are not immensely popular among homeowners due to instability in oil prices. Plus, they are time-consuming and come with an additional cost of a fuel storage tank. Nonetheless, they have low monthly operating costs.

Select a Suitable Location

Once you have chosen the right furnace for your needs, the next step is to select the most appropriate location where you will install it. The site you choose will depend on your furnace type since each furnace comes with specifications for its installation.

If placed in the basement, position it at least 4 inches off the floor to protect it against basement floods. If you opt to place it in the attic, put a drain pan just below it if it leaks.

Make sure that the location is apparent from items to make the area accessible. Also, get rid of any hazards that can get in the way as you move from one place to another through the installation process. The last thing you want is to trip over things during the installation process. Remove any boxes and other stores that are placed directly from the old furnace. You can also take the time to sweep the area and keep your children from the site until you are done.

Also, it is vital to ensure that your furnace has a good foundation. For this, you should place your unit on rubber isolation pads. Rubber isolation helps to minimize noise when the company is running.

The Installation Process

After choosing a suitable location, the next step is to install your new unit. To do this, you first need to determine where the drain and duct will run.

To position the furnace unit, consider where the condensate drain will run. Once you decide that, arrange your furnace slightly sloping the condensate drain. Something else that you need to decide is where the air duct will be.

Usually, the air duct is placed on the side or bottom of the furnace. For this, you will need to cut a hole into the furnace. A professional HVAC to help with this is essential because the last thing you want is to cut the wrong-sized hole on a new unit.

The Connection Process

If you choose the gas unit, you need to connect the furnace to your home’s ducting system. Use a duct sealant to seal any connection with the system. You can also use metal foil tape for this. Make sure that you connect the ductwork to the surface appropriately to prevent damaging them.

Upon connecting the duct system to your unit, you also need to connect your vent pipes to the Furnace unit. Position the vent pipe so that it slightly slopes towards the Furnace to ensure that condensation drains safely and effectively.

If you are installing a gas furnace, make sure that there are adequate ventilation and shutoff. Once complete, inspect the furnace to ensure that there are no leaks.

Furnace Testing

After completing the connection process, it’s now time to test the Furnace and see if it’s working correctly and safely as it should. To do this, run the unit on a heating cycle to ensure that the temperature output meets the manufacturer’s specifications.

It is also here that you will check for any gas leaks on the gas line. Also, see to it that there is proper draining on the condensate drain.


As you have seen, the process of installing a furnace is not that simple as it requires a lot of connections. There is work involved in this project that will contribute to your safety and comfort and the efficiency of the unit when done right. Hence, this job is better left in the hands of professional furnace installers who will guarantee quality workmanship. It’s always preferable to do regular furnace maintenance just to check if it works properly and provides optimal results.

The tips provided above are meant to help homeowners who have experience with furnace installation get their unit right. They also serve to emphasize the importance of hiring qualified furnace installers to complete the job. However, minor tasks like detecting an empty fuel oil tank and replacing the air filter can be done as a do-it-yourself project.