How Much Do New Windows Cost in Ontario? (2026)
Straight answer: about $800–$1500 per opening installed, which puts a typical home around $8,000–$15,000 before the rebate. But "per opening" hides a lot — here's what moves the price, and a calculator to get your own number.
119 days until Ontario's HRS rebate stops accepting applications (November 30, 2026 — reported funding window; can close earlier). A full rebate cycle takes 3–6 months — starting now is the safe window.
Check my rebate →Window & Door Cost Calculator
What new windows cost in Ontario — after the rebate
Cost figures are Ontario market estimates (editable above), not a quote — actual pricing depends on size, frame material, and glazing. The $100/opening rebate is the HRS program figure. For an exact price, get quotes from installers.
How the window rebate works →The rebate truth about windows
The $100/opening rebate is not standalone: it pays only through the assessment (bundled) path, combined with at least one other qualifying upgrade (insulation, air sealing), with a minimum of 3 windows or 1 door — all ENERGY STAR® certified. A windows-only project earns $0 rebate. If windows are your only upgrade, compare quotes on price and quality and skip the rebate math; if you are also insulating, bundle them and the rebate is real. Applications run until November 30, 2026 (reported funding window — terms can change earlier).
Full-frame vs retrofit: the fork in every quote
Every window quote silently answers one question — does the existing frame stay or go — and it moves the price more than the glass does.
Retrofit (insert) — the cheaper path
The new unit slides into your existing frame. Less labour, less finishing, lower price — but only legitimate when the frame is sound and dry. A retrofit over a rotting frame buries the problem and you pay twice later.
Full-frame — roughly 15–20% more
Everything comes out to the rough opening: frame, trim, and insulation around it get redone. Canadian installers price this about 15–20% above retrofit. It is the right — and sometimes only — call when there is moisture or condensation damage, rot around the frame, or aging vinyl/aluminum frames that can hide decay.
Red flag: a quote that does not state which method it prices. Ask directly — and if one installer quotes retrofit where another insists on full-frame, make them each explain why.
What you're actually paying for
The per-opening price bundles the window unit, removal of the old one, installation labour, and finishing. Three factors swing it most: size (a small bathroom window costs a fraction of a large picture window), frame material (vinyl cheapest; fibreglass and wood premium), and glazing (triple-pane over double adds cost but cuts heat loss). Upper-floor and hard-access openings add labour.
Cost by project size (before rebate)
Estimates only — adjust the per-opening figure in the calculator to match your quotes. Then subtract the $100/opening rebate.
How to bring the cost down
Get three quotes (prices for identical windows vary a lot), claim the HRS rebate, and if you're doing other work, bundle upgrades to lift your total rebate. ENERGY STAR® certification is required for the rebate anyway — and it's what cuts your heating bills long-term.
Get real numbers
We'll match you with an installer for free quotes — the only way to turn an estimate into a price.
Get matched with an installer →Common questions
How much does it cost to replace windows in Ontario?
Installed replacement windows typically run $800–$1500 per opening in Ontario, so a typical 8–10 window home is roughly $8,000–$15,000 before rebate. Size, frame material, and glazing drive the range.
What makes windows more expensive?
Larger openings, premium frame materials (fibreglass and wood over vinyl), triple- vs double-pane glazing, and custom shapes. Labour and removal of old units also add up, especially on upper floors.
Does the rebate lower the cost much?
The HRS rebate is $100 per opening — about $1,000 off a 10-window project. Important: the window rebate is NOT standalone — it requires the assessment (bundled) path with at least one other qualifying upgrade, a minimum of 3 windows or 1 door, and ENERGY STAR® certified units. Windows-only projects earn $0 rebate.
What is the difference between full-frame and retrofit replacement?
Retrofit (insert) keeps your existing frame and swaps the window unit — cheaper and faster, but only valid if the frame is sound. Full-frame strips everything to the rough opening and runs roughly 15–20% more, and it is the right call whenever there is moisture damage, rot, or aging vinyl/aluminum frames. A quote that does not say which method it prices is not a complete quote.
How many quotes should I get?
At least three. Per-opening pricing varies widely between installers for the same windows, and quotes are the only way to pin down your real number — the calculator gives you a baseline to sanity-check them against.
Independent guide; not affiliated with the Government of Ontario. Cost figures are editable Ontario market estimates, not quotes. Full-frame vs retrofit premium (~15–20%) reflects published Canadian installer guidance.
All rebate amounts on this page come from ClaimRebate's program registry, last verified July 30, 2026 against homerenovationsavings.ca. Rebate programs can be modified or discontinued at any time without notice — always confirm current amounts and eligibility with the official program before making financial decisions. This is an independent homeowner resource, not affiliated with any government or program administrator.