10/12/2026
Cold drafts in January, fogged-up glass between the panes, and rising heating bills?
Replacing your windows solves the problem—but only if you hire the right installer. In Ontario, the real test of a window isn't the showroom; it’s the first -25°C freeze.
Before you sign any contract, check these non-negotiables:
• In-House Crews vs. Subcontractors: Direct employees guarantee accountability and consistent installation standards.
• WSIB & General Liability: Never take verbal confirmation; verify the actual certificate to protect your home.
• Real Warranties in Writing: Ensure you get coverage for both the product and the installation labour (minimum 5–10 years).
• OBC & Permit Compliance: Proper flashing, insulation, and code adherence prevent leaks and resale headaches.
• Itemized Quotes: Walk away from lump-sum estimates or aggressive 24-hour pressure discounts.
Want the full checklist to avoid expensive contractor mistakes? Read our complete Ontario window replacement guide:
https://panoramawindows.ca/blog/choose-window-replacement-company-ontario/