How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

Natural gas furnaces need sufficient space and airflow to work properly.

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

Annual furnace maintenance is crucial to keep your system working smoothly. A regularly serviced furnace may run more efficiently, which could reduce your energy expenses.

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

Maintenance often helps us spot troubles before they become expensive. This could help reduce future repair costs and possibly prolong the life of your system.

So how much area should your furnace really have?

How Much Space Does My Furnace Need?

If you’re remodeling your basement or sealing off your furnace room, you should consult manufacturer instructions and East Bernard statutes for clearance requirements.

As a general rule of thumb, your system should be 30 inches away from furnace room walls on all sides. This allows our service experts to conveniently 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You also need to make sure the area has ample airflow and ventilation, especially if you have an outdated furnace with a metal flue.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 needs combustion air from the adjacent space. If there’s not enough air, dangerous gas fumes and poisonous carbon monoxide could back draft into your home.

If your furnace is placed in a little room with a gas water heater, you may need to add supplemental openings. This could include a fully louvered door or vents in the walls.

Uncertain if your furnace or water heater has adequate ventilation? We can help!

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You don’t need to think about airflow and ventilation as much if you have a newer, high-efficiency furnace with PVC piping. Your unit uses one pipe as an exhaust vent and the other to add 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 elsewhere. Cat urine contains ammonia, which could create wear on your furnace’s heat exchanger. Plus, the furnace could spread the smelly odors throughout your home.

You should also routinely vacuum near your furnace to stop dust from developing.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you have to have furnace replacement or routine maintenance in East Bernard, E.B. Air, LLC can expertly take care of your needs. Our highly trained technicians can repair any HVAC model or brand.

Call us at 979-335-4262 or use our online scheduler to get an appointment today.