68/100IFR Score
Ranked #1 because of its Google rating and service focus: 4.7★ from 780 Google reviews, listed on Google as “Computer repair service”.
Best Computer Repair Shops in St. Catharines, ON (2026)
56 computer repair shops ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in St. Catharines: Mobile Klinik, IFR Score 68/100; 4.7★ from 780 Google reviews; open 7 days a week.
- 2
Most-reviewed: JTG Systems - Computer Repair - Laptop Repair, 1,199 Google reviews at 4.9★, the most of 56 ranked; ranked #2.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
56 St. Catharines computer repair shops are ranked here by IFR Score, from nine published factors. 40 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 4.9★ across 56 rated IT firms.
Top 10 computer repair shops in St. Catharines at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mobile Klinik | 68 | 4.7★ (780) | St. Catharines | Sat · Sun · Evenings | Overall |
| 2 | JTG Systems - Computer Repair - Laptop Repair | 67 | 4.9★ (1,199) | Welland, 20 km away | Sat · Sun · Evenings | Most reviews |
| 3 | SLP Computer Repairs | 65 | 4.8★ (180) | St. Catharines | Sat · Sun · Evenings | — |
| 4 | EZ PC | 64 | 4.9★ (158) | Welland, 18 km away | Sat · Sun · Evenings | — |
| 5 | Scott E Muma Computer Repairs | 62 | 5.0★ (28) | St. Catharines | Sat · Sun · Evenings | — |
| 6 | Geeko Computer Systems | 62 | 4.8★ (122) | St. Catharines | Sat | — |
| 7 | Brett The Tech | 62 | 4.9★ (204) | Niagara Falls, 14 km away | Sat | — |
| 8 | Wintronic Computers & Security | 61 | 4.3★ (171) | St. Catharines | Sat · Evenings | — |
| 9 | Cyberdyne Systems | 61 | 4.7★ (183) | Niagara Falls, 13 km away | Sat | — |
| 10 | Romtek on-site Computer support | 61 | 4.9★ (52) | Niagara Falls, 11 km away | Sat · Sun · Evenings | — |
The 56 best computer repair shops in St. Catharines, ranked
Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
Scores below: based on 8 of 9 factors; recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Welland, 20 km away
67/100IFR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 1,199 Google reviews, the most in St. Catharines.
Based in St. Catharines
65/100IFR ScoreRanked #3 because of its Google rating and service focus: 4.8★ from 180 Google reviews, listed on Google as “Computer repair service”.
#4 EZ PC
Based in Welland, 18 km away
64/100IFR ScoreRanked #4 because of its Google rating and service focus: 4.9★ from 158 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
62/100IFR ScoreRanked #5 because of its Google rating and service focus: 5.0★ from 28 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
62/100IFR ScoreRanked #6 because of its Google rating and service focus: 4.8★ from 122 Google reviews, listed on Google as “Computer repair service”.
Based in Niagara Falls, 14 km away
62/100IFR ScoreRanked #7 because of its Google rating and service focus: 4.9★ from 204 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
61/100IFR ScoreRanked #8 because of its Google rating and service focus: 4.3★ from 171 Google reviews, listed on Google as “Computer repair service”.
Based in Niagara Falls, 13 km away
61/100IFR ScoreRanked #9 because of its Google rating and service focus: 4.7★ from 183 Google reviews, listed on Google as “Computer repair service”.
Based in Niagara Falls, 11 km away
61/100IFR ScoreRanked #10 because of its Google rating and service focus: 4.9★ from 52 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
60/100IFR ScoreRanked #11 because of its Google rating and service focus: 4.3★ from 102 Google reviews, listed on Google as “Computer repair service”.
#12 ThrifTech
Based in Thorold, 14 km away
60/100IFR ScoreRanked #12 because of its Google rating and service focus: 4.9★ from 91 Google reviews, listed on Google as “Computer repair service”.
Based in Niagara Falls, 15 km away
60/100IFR ScoreRanked #13 because of its Google rating and service focus: 5.0★ from 52 Google reviews, listed on Google as “Computer repair service”.
Based in Welland, 21 km away
59/100IFR ScoreRanked #14 because of its Google rating and service focus: 5.0★ from 59 Google reviews, listed on Google as “Computer repair service”.
#15 Wifi Accessories
Based in Niagara Falls, 15 km away
59/100IFR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 767 Google reviews.
#16 Mobiphix
Based in St. Catharines
59/100IFR ScoreRanked #16 because of its Google rating and review volume: 4.8★ from 370 Google reviews.
Based in Niagara Falls, 12 km away
59/100IFR ScoreRanked #17 because of its Google rating and service focus: 4.9★ from 104 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
58/100IFR ScoreRanked #18 because of its Google rating and service focus: 4.3★ from 7 Google reviews, listed on Google as “Computer repair service”.
Based in Welland, 29 km away
58/100IFR ScoreRanked #19 because of its Google rating and service focus: 4.8★ from 90 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
58/100IFR ScoreRanked #20 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
58/100IFR ScoreRanked #21 because of its Google rating and review volume: 5.0★ from 223 Google reviews.
#22 Cyber Buildz
Based in Thorold, 9 km away
58/100IFR ScoreRanked #22 because of its Google rating and service focus: 5.0★ from 14 Google reviews, listed on Google as “Computer repair service”.
#23 Wifi Accessories
Based in St. Catharines
58/100IFR ScoreRanked #23 because of its Google rating and review volume: 4.8★ from 264 Google reviews.
Based in Welland, 19 km away
58/100IFR ScoreRanked #24 because of its Google rating and service focus: 4.6★ from 89 Google reviews, listed on Google as “Computer repair service”.
Based in St. Catharines
57/100IFR ScoreRanked #25 because of its Google rating and service focus: 5.0★ from 15 Google reviews, listed on Google as “Computer repair service”.
Computer repair shops ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 56 ranked computer repair shops here; the rest are on their profiles.
| Rank | Business | IFR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | ThrifTech | 57 | 5.0★ (35) | 18 km |
| 27 | Jump+ | Apple Premium Partner | 56 | 3.9★ (910) | In St. Catharines |
| 28 | ByteWagon | 56 | 5.0★ (3) | 9 km |
| 29 | Wifi Accessories | 56 | 4.6★ (604) | 17 km |
| 30 | Niagara Warehouse of Hope | 56 | 4.4★ (24) | In St. Catharines |
| 31 | Niagara Custom PC & Repair | 55 | 4.6★ (9) | 12 km |
| 32 | Wifi Accessories | 55 | 5.0★ (176) | 14 km |
| 33 | Optimist Computer Sales and service (MSP) | 55 | 5.0★ (6) | 13 km |
| 34 | Skycomp Solutions Inc. | 55 | 4.9★ (248) | In St. Catharines |
| 35 | DF Computer Centre | 55 | 4.5★ (270) | In St. Catharines |
| 36 | Grand Island Computer Repair | 54 | 5.0★ (20) | 28 km |
| 37 | Micro Tech Niagara Inc | 54 | 5.0★ (5) | In St. Catharines |
| 38 | Jc Gilmour | 53 | 3.5★ (4) | 14 km |
| 39 | Niagara Systems Solutions Inc | 53 | 5.0★ (4) | In St. Catharines |
| 40 | PDC Computers | 53 | 5.0★ (11) | 32 km |
| 41 | Jen Tech | 53 | 2.6★ (5) | 7 km |
| 42 | Solid State IT | 53 | 5.0★ (6) | 15 km |
| 43 | Get IT Easier | 52 | 5.0★ (4) | 16 km |
| 44 | Intro Security | 52 | 4.3★ (3) | In St. Catharines |
| 45 | Vaxxine.com | 52 | 4.3★ (114) | In St. Catharines |
| 46 | Universal Services Computer Repair | 52 | 4.3★ (23) | 23 km |
| 47 | Morcor Computers | 52 | 4.4★ (82) | In St. Catharines |
| 48 | On Off Computers | 52 | 5.0★ (3) | 16 km |
| 49 | JSM CompTech | 49 | 5.0★ (8) | 31 km |
| 50 | Bowes IT Solutions | 49 | 5.0★ (74) | 20 km |
Also serving St. Catharines
20 more computer repair shops within 32 km that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Around the House Technologies | In St. Catharines | |
| BizNet Computer Integration Inc | 5.0★ (2) | In St. Catharines |
| Carr's Computers | 5.0★ (2) | In St. Catharines |
| Display Your Way | 5.0★ (128) | In St. Catharines |
| Dreamscape Canada - K3NADIAN | In St. Catharines | |
| eHousecalls | In St. Catharines | |
| Fixmysite.com | 5.0★ (38) | In St. Catharines |
| Frontier Team Buiding | In St. Catharines | |
| IKE Software | In St. Catharines | |
| Jones PC | 5.0★ (2) | 14 km |
| MicroAge St. Catharines | 3.2★ (11) | In St. Catharines |
| Nerds On Site | In St. Catharines | |
| Next Door Computer Services | 3.0★ (1) | In St. Catharines |
| Niagara Computer Systems | 4.8★ (39) | In St. Catharines |
| Regional Wifi | 4.5★ (16) | In St. Catharines |
| Singular Media Inc. | 5.0★ (18) | In St. Catharines |
| techalex.ca | 4.7★ (9) | In St. Catharines |
| Telecom Computer | In St. Catharines | |
| Titan Microsystems | 5.0★ (9) | In St. Catharines |
| U.S Computer services | 5.0★ (1) | In St. Catharines |
How we ranked St. Catharines computer repair shops
We scored 56 St. Catharines computer repair shops on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm 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 November 9, 2026.
Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In St. Catharines data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (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 firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a computer repair shop
- Ask for a written estimate and approve any extra work before it is done.
- Ask whether they come on site and whether they work on business systems as well as home computers.
- Check the warranty on parts and labour.
- Ask for two or three references from clients of your size and industry, and call them.
- Get the scope, response times and price in writing before you sign, including how you leave and get your data back.
Questions to ask a computer repair shop
- Is the diagnosis free, and how much is the estimate likely to change?
- Do you back up our data before the repair?
- Do you offer on-site visits for businesses?
- What warranty do you give on parts and labour?
- How long will the repair take?
Terms explained
- MSP (managed service provider)
- A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
- Co-managed IT
- An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
- Break-fix
- IT support paid per incident or per hour, with no monthly agreement.
- SLA (service-level agreement)
- The contract terms for response and resolution times, uptime and support hours.
- Help desk
- The support line staff call or email for IT problems.
- RMM
- Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
- vCIO
- A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
- MSSP
- A managed security service provider: a firm that monitors and manages security tools around the clock.
- EDR / MDR
- Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
- MFA
- Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
- Penetration test
- An authorised, simulated attack on your systems to find weaknesses before criminals do.
- SOC 2
- An independent auditor’s report (AICPA standard) on a service provider’s security controls.
Computer repair shops in St. Catharines: frequently asked questions
Who is the best computer repair shop in St. Catharines?
By IFR Score, the highest-ranked computer repair shop in St. Catharines, ON is Mobile Klinik with an IFR Score of 68/100. It has 4.7★ from 780 Google reviews. It is open 7 days a week. JTG Systems - Computer Repair - Laptop Repair (#2) and SLP Computer Repairs (#3) follow. We ranked 56 computer repair shops on nine factors, last updated November 9, 2026.
How many computer repair shops are there in St. Catharines?
ITFirmsRanked ranks 56 computer repair shops serving St. Catharines, ON. 21 of them are based in St. Catharines; the rest serve it from nearby towns. Another 20 within 32 km are listed but not ranked yet. Counts are as of November 2026.
Which computer repair shops in St. Catharines work on weekends?
40 of 56 ranked computer repair shops post Saturday hours and 25 post Sunday hours. The highest-ranked open Saturdays are Mobile Klinik (#1), JTG Systems - Computer Repair - Laptop Repair (#2) and SLP Computer Repairs (#3). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do St. Catharines computer repair shops have?
The median Google rating among 56 rated computer repair shops in St. Catharines is 4.9★, with a median of 52 reviews. JTG Systems - Computer Repair - Laptop Repair has the most, 1,199 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank computer repair shops?
Each computer repair shop gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.
Do computer repair shops outside St. Catharines count in this ranking?
Yes, if they are within 32 km of the St. Catharines city centre, our service radius for computer repair shops. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.
Can computer repair shops pay to rank higher on ITFirmsRanked?
No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.
What does a computer repair shop do?
Computer repair shops fix desktops, laptops and printers in store or on site: hardware repairs, upgrades, virus removal and setup. Many serve small offices as well as households.
How are computer repair shops in St. Catharines ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does computer repair, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
Should a business use a computer repair shop or an IT provider?
A repair shop suits one-off fixes on a few computers. Once you rely on shared files, email, backups and security across several staff, an IT provider with a support agreement usually works out better.
Should we back up before a repair?
Yes, if the computer still starts. Repairs can involve replacing drives or reinstalling the system. Ask the shop whether it backs up data first and what it charges.
Update log for St. Catharines
- November 2026: IFR Scores recalculated for 56 computer repair shops serving St. Catharines.
More computer repair shops and St. Catharines pages
Computer repair shops near St. Catharines
- Computer repair shops in Thorold, ON63 ranked
- Computer repair shops in Niagara Falls, ON99 ranked
- Computer repair shops in Welland, ON68 ranked
- Computer repair shops in Port Colborne, ON72 ranked
- Computer repair shops in Fort Erie, ON95 ranked
- Computer repair shops in Oakville, ON316 ranked
- Computer repair shops in Hamilton, ON115 ranked
- Computer repair shops in Burlington, ON210 ranked
- Computer repair shops in Mississauga, ON474 ranked
- Computer repair shops in East York, ON518 ranked
Other services in St. Catharines
- Managed IT service providers in St. Catharines653 ranked
- Cybersecurity companies in St. Catharines376 ranked
- IT consultants in St. Catharines393 ranked
- Network cabling and installation companies in St. Catharines184 ranked
- Business phone system providers in St. Catharines304 ranked
- Data recovery services in St. Catharines218 ranked
- All IT providers in St. Catharines