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The Home Depot

What to Know for a Furnace Installation

Pro Referral > Home Guides > Heating & Cooling > What to Know for a Furnace Installation
What to Know for a Furnace Installation

Without a furnace in your home, you’d literally be out in the cold. Furnaces warm the air inside your home to keep you safe and comfortable. If you’re reading this guide, you are facing a situation where a furnace must be installed in a home that has never had one before, or an existing furnace must be replaced.


According to a study from the National Association of Home Builders, your furnace should last anywhere from 15 to 20 years. However, a poorly installed furnace could seriously shorten it’s lifespan and cost you lots of money in wasted energy.


Furnace work can be tricky, so it’s a job best left to the professionals. But how do you find a professional and what questions should you ask?

  1. 1.Are You Licensed for a Furnace Installation?

    Make sure your contractor is a licensed HVAC professional. This will guarantee that your pro has been specially trained to install your furnace correctly and safely. Professionals are often required to take continuing education classes, which means that he or she will be knowledgeable about the newest, best innovations relating to your home’s heating and cooling system.

  2. 2.What Type of Furnace Should I Buy?

    According to a study from the National Association of Home Builders, your furnace should last anywhere from 15 to 20 years.

    Will your furnace be electric, natural gas, propane or oil? Will you choose a high efficiency furnace? How large is your house? Do you have space constraints? Your professional will help you find the best furnace for your specific needs. Furnace manufacturer Rheem says that homeowners should look for furnaces that have corrosion-resistant heat exchangers, direct-drive blower units, induced draft blowers, pressure switches and an insulated blower compartment that helps minimize operating noise. The company says consumers should ask if the furnace’s manufacturer quality-checks and tests every unit before it leaves the plant.

  3. 3.How Will My Furnace be Installed?

    If you are replacing an existing furnace, your contractor will disconnect the original furnace and replace it with the new one. Ask if he or she will be disposing of the furnace or if you will have to make arrangements yourself. If you are having the furnace installed in a home for the first time, your professional will also have to carefully install the duct work inside your home. That will take a bit longer and throw your house into a bit of chaos while it happens. Make sure your contractor explains what he or she will do, what they will need from you and how long the process will last.


    The purpose of your home’s heating and cooling system is to keep your home comfortable and livable throughout the year. Treat your home’s HVAC system with care and respect and hire a contractor that does the same. Ask lots of questions and make sure you get a written cost estimate. You don’t want to be left out in the cold when the temperatures drop.

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