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Oakville is in Canada Climate Zone 2. What Does That Mean for Windows and Doors?

Happy New Year

To start, the team here at Fasada welcomes you to 2018. We hope the upcoming year is rewarding and prosperous for you and your family.

Now that it’s January, people are in the mindset of making New Year’s Resolutions. A popular one is to learn something new.

With that in mind, did you know Oakville, Burlington, Milton, and Hamilton are all located in Canada Climate Zone 2?

Here’s what it means – and its impact on your windows and doors.

What are climate zones?

Natural Resources Canada is the government agency responsible for things like:

Global climate map

  • Energy.
  • Minerals and metals.
  • Forests.
  • Mapping.
  • Earth sciences.

As such, they have divided Canada into 3 distinct climate zones as they relate to windows, doors and other fenestration products.

  • Zone 1: The warmest zone. This zone is only found in British Columbia.
  • Zone 2: This is where we are. Covers most of the southern part of the country and all of Atlantic Canada.
  • Zone 3: The coldest zone is also the largest one. Encompasses all of the territories and the central-to-north areas of all provinces (except Atlantic Canada).

Why are climate zones important?

Firstly, you need to know about the “heating degree day” (HDD) which is defined by Investopedia as:

  • “The number of degrees that a day’s average temperature is below 18°C, the temperature at which buildings need to be heated.”

And in case you’re wondering, the 18°C benchmark was established in the National Building Code of Canada in 2010.

Here’s how to calculate HDDs (using 10°C average temperature as an example):

  • Take the average of a day’s high and low temperature and subtract from 18
    • 18 – 10 = 8
  • Multiply the average temperature by days in a month
    • 8 x 30 = 210

Do that for each month of the year, and you’ll come up with the HDD for that climate zone.

Remember, we’re in climate zone 2. That means, on average, we get between 3500 – 6000 HDDs (the higher the number, the colder the location).

What does this mean for doors and windows?

Climate Zone Label

Sample climate zone label from Natural Resources Canada

When you know your climate zone, you can ask for ENERGY STAR products that are certified for it.

Here’s what could happen if you purchase, say, a replacement vinyl window which isn’t certified for your particular climate zone:

  • If the window is warmer than the zone you’re in, it will not provide adequate insulation once the winter months hit.
  • However, if the window is colder than your climate zone, you can actually save money on energy costs by reducing heat loss.

Something to remember as you look at windows and doors: All ENERGY STAR products like fibreglass doors and Vinylbilt windows have the recommended climate zone printed on the label.

Why purchase a door or window that’s not made for your climate zone?

In some instances, you might want a particular custom window or door style which looks amazing, but isn’t certified for your climate zone.

You can still purchase it. And if you take some smart precautions, you can greatly improve its efficiency:

For windows

For doors

  • Replace the weather-stripping around the door frame.
  • Make sure the hinges in the door frame are installed tightly and in the right spots.
  • Install an automatic door closer to ensure it shuts tight every time.

Looking for new windows or doors? Contact Fasada

If one of your New Year’s Resolutions is to replace your windows or doors, Fasada can help you keep it.

And now that you know about Canada’s climate zones, you’ll be able to make the best decision for you, your family, and your home.

Here’s how you can start:

Join the thousands of Families who have invested in us over the years Request a FREE Quote

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