Consumer's Guide – To buying Energy-Efficient Windows and Doors

Catalogue No.: M-92-156/2001E
ISBN: 0-662-27162-9

Section 10 –
Deciding What You Need

10.1 Shopping Checklist

Window Shopping Checklist

Performance results

• IGMAC label present on sealed glazing unit
• CSA-A440 compliance
• CSA air leakage level (recommended minimum A3)
• CSA water penetration level (recommended minimum B3)
• CSA wind load level (recommended minimum C3)
• CSA condensation resistance (optional)
• CSA forced entry (optional)

Energy performance

• Energy Rating (ER) number
• ER: -11 for operable and +2 for fixed are good levels to aim for.

Resistance to wear and tear

• Maintenance-free materials
• Joints well sealed
• Easily operated, well-balanced mechanisms
• Strong, durable hardware

Style

• Meets aesthetic needs
• Suitable for size and orientation
• Non-operable except for code or ventilation requirements

Price

• Three quotes for product and installation (site estimation)

Warranties

• Installation: minimum 90 days
• Sealed glazing unit: minimum five years
• Window: minimum one year

In northern areas, consider durability and operability under extreme conditions. Opening windows in very cold conditions can cause a heavy accumulation of ice from the condensing interior air, making them difficult to close again. Operable windows in northern houses must be extremely sturdy.

Choose a replacement window type that is compatible with the exterior architectural style of the building. Select high-performance windows that have the same "look" as the original windows. When replacing windows with divided lights, manufacturers may provide removable grid inserts that match the appearance of the original windows or grills placed within the sealed glazing unit.

For the maximum in energy efficiency, select doors with:

• well-insulated cores;
• wood, vinyl, fibreglass or thermally broken metal frames;
• weatherstripping made from high-performance, durable materials;
• low air leakage rates (for pre-hung door systems);
• maintenance-free framing materials; and,
• for glass areas, high-performance glazings.

10.2 Comparison Shopping Using the ER System

The goal of the ER system is to provide window buyers with a simple and easy way to compare the energy performance of windows. It's clearly the best standard to assist in this task because it rates the entire window, not just the edge seal or the centre of glazing.

The best window is the one that fits your needs for the least amount of money. Remember that some very moderately priced windows perform as well as more expensive ones.

10.3 Choosing a Supplier

Once you have decided to purchase new windows or doors, and you have a general idea of what you are looking for, it is time to choose a supplier. A good supplier knows the technology and will help you in your decision-making process. Start with the phone book, with recommendations from friends or neighbours, or by visiting home shows or dealer showrooms.

Visit several suppliers to inspect their products. Ask to be shown the installed product in a home, and don't hesitate to follow up on references provided by the supplier. If you are satisfied that the product suits your needs and the company is reputable, ask for a quote.

Normally, the supplier will visit your home and take measurements for each door and window. Obtain quotes from at least three different suppliers. When comparing costs and services, make sure the products are comparable. And don't forget the warranty.

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