What size furnace do I need?

The size of the furnace you’ll need largely depends on the size of your home. Size recommendations based on square footage are:

1,200 square foot home: 36,000 to 72,000 BTUs
1,500 square foot home: 45,000 to 90,000 BTUs
1,800 square foot home: 54,000 to 108,000 BTUs
2,100 square foot home: 63,000 to 126,000 BTUs
2,400 square foot home: 72,000 to 144,000 BTUs

Other factors that affect the size of the new furnace installation you’ll need include:

• Climate zone (for example, Edmonton is in Climate Zone 5)
• Quality of insulation
• Window thickness
• Ceiling height
• Number of people living in your home
• Preferred temperature
• Size and state of the basement

For more info om furnace shopping, read our full article on “how to choose the right furnace“.