How much you get
Like the water heater and larger insulation rebates, this one requires a home energy assessment (about $600, refunded as a rebate) and at least one other qualifying upgrade — it's not a no-assessment, walk-in rebate.
Windows & doors
Per rough opening replaced with an eligible ENERGY STAR window or door. Part of the assessment-required tier.
Guelph Greener Homes can finance this once it reopens
Window and door replacement is an eligible use for the City of Guelph's own Guelph Greener Homes zero-interest loan (up to $50,000, 20% down payment capped at $10,000) — but the City says loan funding is currently almost all committed, and new applicants go on a waitlist rather than getting funded right away. If your windows and doors project is part of a bigger renovation, it's worth checking current loan status at [email protected] or 519-822-1260 ext. 3984 before you plan financing around it.
Windows & Doors installers in Guelph
We're still building our verified installer network for Guelph specifically. In the meantime, browse our full directory of vetted installers across Ontario — many serve the Guelph area.
Browse the installer directory →
Local context
Utilities: Alectra Utilities (electricity) and Enbridge Gas (natural gas). Alectra took over Guelph's electricity system when Guelph Hydro merged in on January 1, 2019.
Typical heating: Mostly natural gas, which affects which heat pump tier a household lands in.
Permits & timeline: 6–10 weeks quote to installation for solar, faster for a heat pump swap. City building permit and ESA electrical inspection where required.
Common questions
How much is the windows and doors rebate in Guelph?
$100 per rough opening, for each window or door replaced with an eligible ENERGY STAR product. It's part of the assessment-required tier of the Home Renovation Savings Program, so you'll need a home energy assessment (about $600, refunded) and at least one other qualifying upgrade.
Can Guelph Greener Homes help finance new windows and doors?
Windows and doors are an eligible use for the City's zero-interest loan, but the City says loan funding is almost all committed right now and new applicants are on a waitlist. Contact [email protected] or 519-822-1260 ext. 3984 to check current status.
Your utility: Alectra Utilities
Guelph's own municipal utility, Guelph Hydro, stopped existing as a separate company back in 2019 when it merged into Alectra Utilities, and the last remaining piece of the old system, the billing platform, finally switched over to Alectra's in 2026, so if your account number changed recently, that's why. The windows and doors rebate is unaffected either way since it's a provincial payment, but Alectra is now who you'd call about panel capacity or a new electrical connection tied to this project.
What Guelph's winters mean for this upgrade's payback
Guelph's winters run colder than nearby Kitchener-Waterloo despite the short distance between them, a difference tied to elevation and distance from Lake Ontario's moderating effect — the 10-year average January daily low (2015-2024) is -9.3°C, with a coldest recorded day of -30.8°C. For a home with original 1960s or '70s-era windows, that's enough sustained cold to make the payback on replacement faster than the province-wide average suggests.
Next steps
View all Guelph rebate programs → or check the official Home Renovation Savings Program site → for the current source of truth.