What kind of door do I need for a furnace room?
James Stevens
Updated on May 02, 2026
A fully louvered door. The most common solution is to get combustion air from the rest of the house. This is done simply by putting vent openings in the furnace room to connect it to other rooms in the rest of the house and allow air to get in.
Does a furnace room require a door?
NO. If you have a combustion air from the outdoors duct into the room you do not need a louvered door.
How much open space does a furnace need?
As a general recommendation, your heater should be 30 inches away from furnace room walls on all sides. This allows our service experts to comfortably replace it. You also need to check the space has enough airflow and ventilation, especially if you have an aging furnace with a metal flue.
Can you enclose your furnace?
If you are finishing your basement and building walls, incorporate a small area to enclose the furnace, AC, and or water heater. These louvered doors provide great ventilation. Another option is to create a set of built-in shelves in the door that don’t even look like a closet.
Can a furnace be installed in a bedroom closet?
It’s not recommended to have a furnace in your bedroom closet due to the toxic fumes that a furnace emits. Keep the furnace as far away from the air you breathe daily as possible. Furnaces are built to not only heat bedrooms but entire houses.
Does a furnace closet need ventilation?
Ventilating a closet is generally easy to do. Furnaces have their own supply and exhaust vents that need to be installed along with the unit. For safety, you need the required venting, but as long as you extend pipes to the roof or outside walls, you do not need to worry about the closet.
How big does a furnace room need to be Ontario?
Furnace/Utility Room Any door leading to a utility room (furnace, hot water tank or laundry room) must be a minimum 32” x 78” door. This 32” width applies to all doors leading to that utility room in the path of travel from the top of the basement stairs to the utility room.
Can you put a gas furnace in a closet?
High-efficiency furnaces may be installed in basements, ground-floor utility rooms, garages or attics, in open spaces or confined closets.
What qualifies as a bedroom in Ontario?
The Ontario Building Code (OBC): 9.5. 7.1. Areas of Bedrooms: (1) Except as provided in Articles 9.5. 7.3., bedrooms in dwelling units shall have an area not less than 7 m² where built-in cabinets are not provided and not less than 6 m² where built-in cabinets are provided.
Can a gas furnace be located in a bedroom?
Can you put a gas heater in a bedroom?
Unvented gas heaters are designed for supplemental use only. Do not use unvented heaters in bedrooms, bathrooms, or confined spaces. Provide adequate ventilation, as required in the owner’s manual. If the home has weatherstripped doors and windows an outside air source will likely be required.
How to determine the correct home furnace size?
Select the region you live in according to the color keyed map below.
What size Furnace do I need for my house?
A standard that is used by heating and cooling equipment companies is to provide at least 25 to 30 Btu of heat per square feet in the home for a moderate to warm climate. A mid-sized home of 2,000 square feet would need approximately 50,000 to 60,000 Btu to heat it properly.
How do you size a furnace for a house?
A rule of thumb is to allow 25 to 30 BTU per square foot for moderate climates and up to 45 BTU per square foot in harsher climates. For a 2,000 square foot home, the ideal furnace size therefore varies from 60,000 to 90,000 BTU.
What size Furnace do you need?
Determining the size of your furnace requires a little more than choosing small, medium or large, but it doesn’t have to be very complicated. A basic rule of thumb is that it takes 30 BTUs for every 1,000 square feet.