How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

Natural gas furnaces need adequate space and airflow to heat correctly.

Your furnace can overheat if it doesn’t have enough clearance. It also makes it difficult for our professionals to perform furnace repair.

Regular furnace maintenance is important to keep your unit running smoothly. A regularly serviced furnace may heat more efficiently, which could decrease your energy bills.

Related: How Does Furnace Maintenance Impact the Energy Efficiency of Your Home?

Maintenance often helps us discover troubles before they begin. This could help reduce future repair expenses and potentially lengthen the life of your system.

So how much area should your furnace really have?

How Much Space Does My Furnace Need?

If you’re updating your basement or enclosing your furnace room, you should take a look at manufacturer instructions and Bossier City ordinances for clearance requirements.

As a general suggestion, your system should be 30 inches away from furnace room walls on all sides. This permits our service experts to easily work on it.

You also need to ensure the area has ample airflow and ventilation, especially if you have an aging furnace with a metal flue.

Related: Furnace Service or Furnace Replacement: What to Consider

This type of furnace needs combustion air from the surrounding location. If there’s insufficient air, unsafe gas fumes and poisonous carbon monoxide could back draft into your home.

If your furnace is positioned in a tiny room with a gas water heater, you may need to put in supplemental openings. This could involve a fully louvered door or vents in the walls.

Unsure if your furnace or water heater has proper ventilation? We can assist you!

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You don’t need to assess airflow and ventilation as much if you have a modern, high-efficiency furnace with PVC piping. Your furnace uses one pipe as an exhaust vent and the other to pull in air.

Keep Combustible Materials Away from Your Furnace

Although furnace rooms function as laundry and storage space, you should keep yours free of items that could be fire hazards.

This includes:

  • Clotheslines
  • Cleaning or laundry products
  • Gasoline, paint or paint thinner
  • Rags and papers
  • Wood scraps and sawdust
  • Used filters

If you have a cat, place your litter box somewhere else. Cat urine contains ammonia, which could create wear on your furnace’s heat exchanger. Plus, the furnace could circulate the smelly odors throughout your home.

You should also regularly clean near your furnace to prevent dust from building up.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you want furnace replacement or regular maintenance in Bossier City, Central Aire Heating & A/C Inc can expertly take care of your needs. Our highly trained technicians can work on any HVAC model or brand.

Call us at 318-855-2326 or use our online scheduler to set up an appointment today.