61/100IFR Score
Ranked #1 because of its Google rating and service focus: 4.9★ from 121 Google reviews, listed on Google as “Computer support and services”.
Best Managed IT Service Providers in Sarnia, ON (2026)
123 managed IT service providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sarnia: Stark PC LLC, IFR Score 61/100; 4.9★ from 121 Google reviews; open 7 days a week.
- 25
Most-reviewed: Phone Clinic, 547 Google reviews at 4.7★, the most of 123 ranked; ranked #25.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
123 Sarnia managed IT service providers are ranked here by IFR Score, from nine published factors. 37 open Saturdays and 25 open Sundays, based on posted hours. The median Google rating is 5.0★ across 123 rated IT firms.
Top 10 managed IT service providers in Sarnia 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 | Stark PC LLC | 61 | 4.9★ (121) | Troy, 73 km away | Sat · Sun · Evenings | Overall |
| 2 | Tech Enterprises | 58 | 4.9★ (128) | Saint Clair Shores, 64 km away | — | — |
| 3 | Grid4 Communications | 58 | 4.5★ (54) | Troy, 78 km away | Sat · Sun · Evenings | — |
| 4 | Maxify IT INC. | 57 | 5.0★ (20) | London, 71 km away | Sat · Sun · Evenings | — |
| 5 | Binary Computer Solutions | 57 | 5.0★ (191) | Port Huron, 4 km away | Sat | — |
| 6 | Zari Computers | 57 | 5.0★ (17) | Sterling Heights, 69 km away | Sat · Sun · Evenings | — |
| 7 | GRIT Technologies | 57 | 5.0★ (61) | Clinton Township, 62 km away | — | — |
| 8 | Managed IT Services in Port Huron - CTS Companies | 57 | 5.0★ (17) | Port Huron, 5 km away | — | — |
| 9 | BAE Networks | Managed IT and Compliance Services | 57 | 4.9★ (90) | Troy, 76 km away | — | — |
| 10 | Leet Services | 57 | 5.0★ (79) | Rochester Hills, 73 km away | — | — |
The 123 best managed IT service providers in Sarnia, 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 Saint Clair Shores, 64 km away
58/100IFR ScoreRanked #2 because of its Google rating and service focus: 4.9★ from 128 Google reviews, listed on Google as “Computer support and services”.
Based in Troy, 78 km away
58/100IFR ScoreRanked #3 because of its Google rating and service focus: 4.5★ from 54 Google reviews, listed on Google as “Computer support and services”.
Based in London, 71 km away
57/100IFR ScoreRanked #4 because of its Google rating and service focus: 5.0★ from 20 Google reviews, listed on Google as “Computer support and services”.
Based in Port Huron, 4 km away
57/100IFR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 191 Google reviews.
Based in Sterling Heights, 69 km away
57/100IFR ScoreRanked #6 because of its Google rating and service focus: 5.0★ from 17 Google reviews, listed on Google as “Computer support and services”.
Based in Clinton Township, 62 km away
57/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 61 Google reviews, listed on Google as “Computer support and services”.
Based in Port Huron, 5 km away
57/100IFR ScoreRanked #8 because of its Google rating and service focus: 5.0★ from 17 Google reviews, listed on Google as “Computer support and services”.
Based in Troy, 76 km away
57/100IFR ScoreRanked #9 because of its Google rating and service focus: 4.9★ from 90 Google reviews, listed on Google as “Computer support and services”.
#10 Leet Services
Based in Rochester Hills, 73 km away
57/100IFR ScoreRanked #10 because of its Google rating and service focus: 5.0★ from 79 Google reviews, listed on Google as “Computer support and services”.
Based in Troy, 77 km away
57/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 18 Google reviews, listed on Google as “Computer support and services”.
Based in Sarnia
56/100IFR ScoreRanked #12 because of its Google rating and service focus: 4.8★ from 13 Google reviews, listed on Google as “Computer support and services”.
Based in Auburn Hills, 77 km away
56/100IFR ScoreRanked #13 because of its Google rating and service focus: 4.9★ from 16 Google reviews, listed on Google as “Computer support and services”.
Based in Warren, 72 km away
56/100IFR ScoreRanked #14 because of its Google rating and service focus: 4.9★ from 57 Google reviews, listed on Google as “Computer support and services”.
Based in Port Huron, 9 km away
56/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 12 Google reviews, listed on Google as “Computer support and services”.
Based in Clinton Township, 60 km away
55/100IFR ScoreRanked #16 because of its Google rating and review volume: 4.8★ from 507 Google reviews.
Based in Clinton Township, 64 km away
55/100IFR ScoreRanked #17 because of its Google rating and service focus: 5.0★ from 40 Google reviews, listed on Google as “Computer support and services”.
#18 CanWeb
Based in Sarnia
55/100IFR ScoreRanked #18 because of its Google rating and service focus: 4.8★ from 9 Google reviews, listed on Google as “Computer support and services”.
Based in Sarnia
55/100IFR ScoreRanked #19 because of its Google rating and service focus: 5.0★ from 9 Google reviews, listed on Google as “Computer support and services”.
Based in Sarnia
55/100IFR ScoreRanked #20 because of its Google rating and service focus: 4.6★ from 10 Google reviews, listed on Google as “Computer support and services”.
#21 Awecomm
Based in Troy, 77 km away
55/100IFR ScoreRanked #21 because of its Google rating and service focus: 4.9★ from 53 Google reviews, listed on Google as “Computer support and services”.
#22 TAZ Networks Inc
Based in Clinton Township, 61 km away
55/100IFR ScoreRanked #22 because of its Google rating and service focus: 4.9★ from 32 Google reviews, listed on Google as “Computer support and services”.
Based in Pontiac, 77 km away
54/100IFR ScoreRanked #23 because of its Google rating and service focus: 4.6★ from 9 Google reviews, listed on Google as “Computer support and services”.
Based in Troy, 78 km away
54/100IFR ScoreRanked #24 because of its Google rating and service focus: 5.0★ from 8 Google reviews, listed on Google as “Computer support and services”.
#25 Phone Clinic
Based in Rochester Hills, 70 km away
54/100IFR ScoreRanked #25 because of its Google rating and review volume: 4.7★ from 547 Google reviews, the most in Sarnia.
Managed IT service providers 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 123 ranked managed IT service providers here; the rest are on their profiles.
Also serving Sarnia
20 more managed IT service providers within 80 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 |
|---|---|---|
| Acute Network Solutions | 5.0★ (2) | In Sarnia |
| Atlas Technologies | 5.0★ (134) | In Sarnia |
| Baysar Business Solutions | 5.0★ (1) | In Sarnia |
| C.E Technology Solutions Ltd. Sarnia | 5.0★ (31) | In Sarnia |
| Dark Sector Technologies Inc. | 5.0★ (1) | In Sarnia |
| Digital Friends Inc | 4.7★ (40) | In Sarnia |
| Experior IT | 5.0★ (2) | 54 km |
| Helpdesk and Support Inc | In Sarnia | |
| Howell Data Systems Inc. | 5.0★ (2) | In Sarnia |
| Jordan IT Services | 5.0★ (2) | 63 km |
| Letsy Tech Co | 5.0★ (2) | 55 km |
| MaryanVTech LLC | 5.0★ (2) | 58 km |
| McLean & McLean Computer Services | 5.0★ (25) | In Sarnia |
| Metro Computer Rescue | 5.0★ (2) | 70 km |
| MicroTech Systems, Inc. | 5.0★ (2) | 75 km |
| NexalOne | 5.0★ (2) | 72 km |
| Overwulf Technologies | 5.0★ (6) | In Sarnia |
| PLEXUS Developments Ltd | 4.5★ (4) | In Sarnia |
| Sarnia Computers | 5.0★ (14) | In Sarnia |
| Simplified Business Solutions, Llc | 5.0★ (2) | 2 km |
How we ranked Sarnia managed IT service providers
We scored 123 Sarnia managed IT service providers 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 Sarnia 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 managed IT service provider
- Ask for a sample service-level agreement and compare response times, support hours and exclusions.
- Check how backups are done and tested, and ask when they last restored a client’s data.
- Ask which security tools are included and which cost extra (MFA, endpoint protection, email filtering, staff training).
- Make sure you, not the firm, own your accounts, domain names and licences.
- 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 managed IT service provider
- Is the price per user, per device or a bundle, and what is not included?
- What are your response times for urgent, normal and low-priority tickets?
- Is your help desk in-house or outsourced, and what are its hours?
- How do you back up our data, how often do you test restores, and where are the copies kept?
- Which security tools are included, and do you monitor alerts after hours?
- What happens to our passwords, documentation and data if we leave?
- Can you give us references from clients of our size and industry?
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.
Managed IT service providers in Sarnia: frequently asked questions
Who is the best managed IT service provider in Sarnia?
By IFR Score, the highest-ranked managed IT service provider in Sarnia, ON is Stark PC LLC with an IFR Score of 61/100. It has 4.9★ from 121 Google reviews. It is open 7 days a week. Tech Enterprises (#2) and Grid4 Communications (#3) follow. We ranked 123 managed IT service providers on nine factors, last updated November 9, 2026.
How many managed IT service providers are there in Sarnia?
ITFirmsRanked ranks 123 managed IT service providers serving Sarnia, ON. 6 of them are based in Sarnia; the rest serve it from nearby towns. Another 20 within 80 km are listed but not ranked yet. Counts are as of November 2026.
Which managed IT service providers in Sarnia work on weekends?
37 of 123 ranked managed IT service providers post Saturday hours and 25 post Sunday hours. The highest-ranked open Saturdays are Stark PC LLC (#1), Grid4 Communications (#3) and Maxify IT INC. (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Sarnia managed IT service providers have?
The median Google rating among 123 rated managed IT service providers in Sarnia is 5.0★, with a median of 15 reviews. Phone Clinic has the most, 547 reviews, and ranks #25. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank managed IT service providers?
Each managed IT service provider 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 managed IT service providers outside Sarnia count in this ranking?
Yes, if they are within 80 km of the Sarnia city centre, our service radius for managed IT service providers. 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 managed IT service providers 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 managed IT service provider do?
Managed IT service providers (MSPs) run a business’s computers, servers, network, Microsoft 365 or Google accounts, backups and help desk for a monthly fee, or provide IT support by the hour.
How are managed it service providers in Sarnia ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does managed IT services and IT support, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
What should a managed IT agreement include?
At minimum: help desk support for your staff, monitoring and patching of computers and servers, backups that are tested, security tools such as endpoint protection and multi-factor authentication, and a named contact. The agreement should state response times, support hours and what counts as out of scope.
Is managed IT priced per user or per device?
Both models are common, and some firms sell tiered bundles. Per-user pricing suits staff with several devices; per-device pricing suits shared computers. Compare quotes on the same number of users, devices and servers.
How long are managed IT contracts?
Often one to three years, sometimes month to month. Check the notice period, any early-termination fee and how the firm hands over passwords, documentation and data when the contract ends.
Update log for Sarnia
- November 2026: IFR Scores recalculated for 123 managed IT service providers serving Sarnia.
- November 2026: 2 duplicate listings merged.