491 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Markham: Sprint Auto Glass, CR Score 62/100; 4.7★ from 413 Google reviews; open 24/7.
Best for emergencies (open 24/7): OhMyGlass "Window and Door Repairs", posts 24/7 hours; ranked #4 of 491.
Most-reviewed: EcoTech Windows & Doors, 3,159 Google reviews at 4.8★, the most of 491 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
491 Markham window installers are ranked here by CR Score, from ten published factors. 56 are open 24/7, 326 open Saturdays and 202 open Sundays, based on posted hours. The median Google rating is 4.9★ across 491 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Sprint Auto Glass | 62 | 4.7★ (413) | Scarborough, 14 km away | 24/7 | Overall |
| 2 | EcoTech Windows & Doors | 62 | 4.8★ (3,159) | Concord, 19 km away | Sat | Most reviews |
| 3 | Magic Windows & Doors | 62 | 4.7★ (1,916) | Concord, 24 km away | Sat · Sun | — |
| 4 | OhMyGlass "Window and Door Repairs" | 61 | 5.0★ (160) | North York, 23 km away | 24/7 | Emergencies |
| 5 | Horizon Windows and Doors Inc. | 61 | 5.0★ (75) | Vaughan, 14 km away | 24/7 | — |
| 6 | Glass Doctor of Barrie, ON | 61 | 4.9★ (1,586) | Barrie, 61 km away | 24/7 | — |
| 7 | Renewal by Andersen of Greater Toronto | 61 | 4.8★ (2,808) | Mississauga, 48 km away | Sat · Sun · Evenings | — |
| 8 | Alco Glass LTD | 61 | 5.0★ (38) | Ajax, 5 km away | 24/7 | — |
| 9 | Icarus Services | 61 | 4.9★ (184) | Richmond Hill, 13 km away | Sat · Evenings · Emergency | — |
| 10 | Jay's Glass | 60 | 5.0★ (128) | Toronto, 28 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.7★ from 413 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 19 km away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 3,159 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 24 km away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 1,916 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North York, 23 km away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 160 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vaughan, 14 km away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 75 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 61 km away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,586 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Mississauga, 48 km away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 2,808 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ajax, 5 km away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Richmond Hill, 13 km away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 184 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Toronto, 28 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milton, 5 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 87 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brampton, 32 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Etobicoke, 38 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Concord, 20 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Toronto, 21 km away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 138 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Richmond Hill, 10 km away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Barrie, 19 km away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 159 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vaughan, 19 km away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 599 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vaughan, 19 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 295 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Toronto, 20 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 112 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vaughan, 24 km away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 1,932 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in King, 19 km away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 130 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vaughan, 20 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 165 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Toronto, 28 km away
Ranked #24 because of its Google rating and review volume: 5.0★ from 1,240 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North York, 21 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 491 ranked window installers here; the rest are on their profiles.
20 more window installers within 64 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| ACCL CUSTOM HOMES AND ADDITIONS | In Markham | |
| ALERT GLASS | In Markham | |
| Bollards Toronto Ltd. | In Markham | |
| Burano Doors Toronto | 5.0★ (2) | 24 km |
| DWM Windows and Doors Repairs | 5.0★ (1) | In Markham |
| FALCON WD WINDOWS AND DOORS | 5.0★ (2) | 22 km |
| Griffon Home Renovations | 4.0★ (2) | 17 km |
| High Efficiency Cooling & Heating Inc. | 4.8★ (1,319) | In Markham |
| Iron Villa | In Markham | |
| Master Edge Homes | 4.8★ (18) | In Markham |
| New Glass Technologies | 5.0★ (2) | 29 km |
| NYO Doors Repairs and Windows | 5.0★ (2) | 23 km |
| Pro Desk at RONA+ | 3.0★ (2) | 16 km |
| Real Clean | 4.2★ (11) | In Markham |
| Ruff House Renovations Corporation | 5.0★ (2) | 29 km |
| SHACK SHINE Markham, Richmond Hill and Vaughan | 4.9★ (205) | In Markham |
| Sobol Inc. | 5.0★ (2) | 19 km |
| Windows & Doors Markham | In Markham | |
| X&H Construction | 4.9★ (55) | In Markham |
| Yok Mei Construction Corp. - General Contractors Markham | 5.0★ (43) | In Markham |
US national ranges converted to CAD, not adjusted for Markham. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | CA$4,830 | CA$10,330 | CA$16,640 | Per project (several windows): typical range of customer-reported projects. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
We scored 491 Markham window installers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Markham data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |