How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

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

Your furnace can get too hot if it doesn’t have enough clearance. It also makes it hard for our professionals to accomplish furnace repair.

Regular furnace maintenance is essential to keep your system running well. A regularly serviced furnace may run more efficiently, which could reduce your utility costs.

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

Maintenance often helps us spot problems before they start. This could help lessen future repair costs and possibly prolong the life of your unit.

So how much area should your equipment really have?

How Much Space Does My Furnace Need?

If you’re updating your basement or sealing off your furnace room, you should consult manufacturer instructions and Huffman statutes for clearance guidelines.

As a general recommendation, 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You also need to make sure the area has ample airflow and ventilation, especially if you have an outdated furnace with a metal flue.

Related: Furnace Service or Furnace Replacement: What to Consider

This model of furnace draws combustion air from the surrounding area. If there’s not enough air, unsafe gas fumes and poisonous carbon monoxide could leak into your home.

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

Unsure if your furnace or water heater has adequate ventilation? We can take a look!

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

Keep Combustible Materials Away from Your Furnace

Although furnace rooms function as laundry and storage space, you should keep yours free of clutter 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, situate your litter box elsewhere. Cat urine contains ammonia, which could create wear on your furnace’s heat exchanger. Plus, the furnace could circulate the smelly odors all over your home.

You should also frequently clean by your furnace to prevent dust from accumulating.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you have to have furnace replacement or routine maintenance in Huffman, Air Houston Mechanical LLC can expertly meet your needs. Our highly trained technicians can fix any heating equipment model or brand.

Call us at 832-777-1521 or use our online scheduler to get an appointment today.