How to Choose the Right Windows
Buying windows is a significant investment that affects your home's comfort, energy bills, and appearance for decades. This guide will help you understand your options and make the best choice for your Ottawa home.
Step 1: Understand Window Types
Different window styles suit different needs and locations:
Casement
Hinged on side, crank to open. Best ventilation and air seal. Popular in Ottawa.
Double-Hung
Both sashes slide. Classic look, easy to clean. Great for traditional homes.
Awning
Hinged at top, opens outward. Allows ventilation in rain.
Sliding
Horizontal operation. Good for wide openings, tight spaces.
Picture
Fixed, non-operating. Maximum glass area and light.
Bay/Bow
Projects from wall. Creates space, adds architectural interest.
Step 2: Choose Your Frame Material
| Material | Pros | Cons | Price |
|---|---|---|---|
| Vinyl | No maintenance, affordable, good insulation | Limited colours, can't paint | $$ |
| Fiberglass | Strongest, paintable, best thermal stability | Higher cost | $$$ |
| Aluminum | Slim profiles, durable, modern look | Conducts heat (needs thermal break) | $$ |
| Wood | Beautiful, natural insulator, paintable | High maintenance, can rot | $$$$ |
Step 3: Understand Glass Options
Number of Panes
- Double-pane: Standard for most homes. Two panes with air/gas between.
- Triple-pane: Premium insulation. Recommended for Ottawa's extreme temperatures.
Glass Coatings
- Low-E (low emissivity): Invisible coating that reflects heat. Keeps heat inside in winter, outside in summer. Essential for energy efficiency.
- Tinted glass: Reduces glare and heat gain. Good for south/west-facing windows.
Gas Fill
- Argon: Standard upgrade. Denser than air, improves insulation 15-20%.
- Krypton: Premium option. Even better insulation, used in triple-pane.
Step 4: Check Energy Ratings
Look for ENERGY STAR certification and check these ratings:
- U-Factor: Measures heat transfer. Lower is better. Look for 1.4 or less.
- ER (Energy Rating): Canadian rating that considers all factors. Higher is better. Look for 34+ for Ottawa.
- Solar Heat Gain Coefficient (SHGC): How much solar heat passes through. Lower reduces cooling costs.
Step 5: Consider Ottawa's Climate
Ottawa's extreme temperatures (-35°C to +35°C) require windows that:
- Maintain thermal performance in extreme cold
- Have quality weatherstripping that stays flexible
- Use warm-edge spacers to reduce condensation
- Are properly installed with air sealing
Step 6: Choose a Reputable Installer
The best windows perform poorly if installed incorrectly. Look for:
- Established local company (not just a salesperson)
- Written warranty on both product and installation
- References from past customers
- Licensed and insured installers
- Clear written quotes with no hidden fees
Red Flags to Watch For
- High-pressure sales tactics or "today only" pricing
- Extremely low prices (often means low quality or bait-and-switch)
- No physical showroom or office
- Vague or verbal-only warranties
- Large deposits required upfront