62/100IFR Score
Ranked #1 because of its Google rating and service focus: 4.5★ from 441 Google reviews, listed on Google as “Computer support and services”.
Best Managed IT Service Providers in Fairfield, CA (2026)
337 managed IT service providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Fairfield: Demandforce, IFR Score 62/100; 4.5★ from 441 Google reviews; open 7 days a week.
- 20
Most-reviewed: Tech 2U, 2,167 Google reviews at 4.9★, the most of 337 ranked; ranked #20.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
337 Fairfield managed IT service providers are ranked here by IFR Score, from nine published factors. 120 open Saturdays and 83 open Sundays, based on posted hours. The median Google rating is 5.0★ across 337 rated IT firms.
Top 10 managed IT service providers in Fairfield 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 | Demandforce | 62 | 4.5★ (441) | San Francisco, 37 mi away | Sat · Sun · Evenings | Overall |
| 2 | Intelligent Technical Solutions | ITS | 62 | 5.0★ (104) | San Francisco, 33 mi away | Sat · Sun · Evenings | — |
| 3 | Bay Computing Group | 61 | 5.0★ (48) | Concord, 19 mi away | Sat · Sun · Evenings | — |
| 4 | Total Secure Technology | Managed IT Services Company in Sacramento | 61 | 4.9★ (161) | Sacramento, 46 mi away | Sat · Sun · Evenings | — |
| 5 | CLEAR Technology | 61 | 5.0★ (123) | Alameda, 31 mi away | Sat · Sun | — |
| 6 | Net Swift Tech Solutions | 60 | 5.0★ (52) | Vineyard, 34 mi away | Sat · Sun · Evenings | — |
| 7 | Jones IT | 60 | 5.0★ (431) | San Francisco, 39 mi away | — | — |
| 8 | GroupOne IT - Sacramento Managed IT Services Company | 60 | 5.0★ (59) | Sacramento, 37 mi away | Sat · Sun · Evenings | — |
| 9 | Lamorinda Technology, Inc. | 60 | 5.0★ (239) | Antioch, 27 mi away | — | — |
| 10 | I Need A Techie | 60 | 4.9★ (116) | Dublin, 38 mi away | Sat · Sun · Evenings | — |
The 337 best managed IT service providers in Fairfield, 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 San Francisco, 33 mi away
62/100IFR ScoreRanked #2 because of its Google rating and service focus: 5.0★ from 104 Google reviews, listed on Google as “Computer support and services”.
Based in Concord, 19 mi away
61/100IFR ScoreRanked #3 because of its Google rating and service focus: 5.0★ from 48 Google reviews, listed on Google as “Computer support and services”.
Based in Sacramento, 46 mi away
61/100IFR ScoreRanked #4 because of its Google rating and service focus: 4.9★ from 161 Google reviews, listed on Google as “Computer support and services”.
Based in Alameda, 31 mi away
61/100IFR ScoreRanked #5 because of its Google rating and service focus: 5.0★ from 123 Google reviews, listed on Google as “Computer support and services”.
Based in Vineyard, 34 mi away
60/100IFR ScoreRanked #6 because of its Google rating and service focus: 5.0★ from 52 Google reviews, listed on Google as “Computer support and services”.
#7 Jones IT
Based in San Francisco, 39 mi away
60/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 431 Google reviews, listed on Google as “Computer support and services”.
Based in Sacramento, 37 mi away
60/100IFR ScoreRanked #8 because of its Google rating and service focus: 5.0★ from 59 Google reviews, listed on Google as “Computer support and services”.
Based in Antioch, 27 mi away
60/100IFR ScoreRanked #9 because of its Google rating and service focus: 5.0★ from 239 Google reviews, listed on Google as “Computer support and services”.
#10 I Need A Techie
Based in Dublin, 38 mi away
60/100IFR ScoreRanked #10 because of its Google rating and service focus: 4.9★ from 116 Google reviews, listed on Google as “Computer support and services”.
#11 I'm The Geek
Based in Fairfield
59/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 31 Google reviews, listed on Google as “Computer support and services”.
Based in San Francisco, 37 mi away
59/100IFR ScoreRanked #12 because of its Google rating and service focus: 4.9★ from 54 Google reviews, listed on Google as “Computer support and services”.
Based in Santa Rosa, 38 mi away
59/100IFR ScoreRanked #13 because of its Google rating and service focus: 5.0★ from 44 Google reviews, listed on Google as “Computer support and services”.
Based in Brentwood, 29 mi away
58/100IFR ScoreRanked #14 because of its Google rating and service focus: 5.0★ from 40 Google reviews, listed on Google as “Computer support and services”.
Based in San Francisco, 37 mi away
58/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 219 Google reviews, listed on Google as “Computer support and services”.
Based in San Francisco, 38 mi away
58/100IFR ScoreRanked #16 because of its Google rating and service focus: 5.0★ from 27 Google reviews, listed on Google as “Computer support and services”.
Based in North Highlands, 45 mi away
58/100IFR ScoreRanked #17 because of its Google rating and service focus: 4.9★ from 42 Google reviews, listed on Google as “Computer support and services”.
Based in Sacramento, 42 mi away
58/100IFR ScoreRanked #18 because of its Google rating and service focus: 4.9★ from 257 Google reviews, listed on Google as “Computer support and services”.
Based in Santa Rosa, 30 mi away
57/100IFR ScoreRanked #19 because of its Google rating and service focus: 5.0★ from 27 Google reviews, listed on Google as “Computer support and services”.
#20 Tech 2U
Based in Sacramento, 42 mi away
57/100IFR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 2,167 Google reviews, the most in Fairfield.
Based in Napa, 4 mi away
57/100IFR ScoreRanked #21 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer support and services”.
Based in Oakland, 33 mi away
57/100IFR ScoreRanked #22 because of its Google rating and service focus: 4.9★ from 143 Google reviews, listed on Google as “Computer security service”.
#23 Miles IT
Based in Pleasant Hill, 20 mi away
57/100IFR ScoreRanked #23 because of its Google rating and service focus: 4.3★ from 9 Google reviews, listed on Google as “Computer support and services”.
Based in San Ramon, 33 mi away
57/100IFR ScoreRanked #24 because of its Google rating and service focus: 5.0★ from 89 Google reviews, listed on Google as “Computer support and services”.
Based in San Francisco, 37 mi away
57/100IFR ScoreRanked #25 because of its Google rating and service focus: 4.8★ from 18 Google reviews, listed on Google as “Computer support and services”.
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 337 ranked managed IT service providers here; the rest are on their profiles.
Also serving Fairfield
20 more managed IT service providers within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| A&E TECHNOLOGY CONSULTANTS INC CORPORATI | In Fairfield | |
| Concerto Networks | In Fairfield | |
| Connected Systems | 5.0★ (2) | 11 mi |
| Digital Realms Computer Services | In Fairfield | |
| Flagg Applied Computer Technologies | 5.0★ (2) | 18 mi |
| IT & Cybersecurity Trusted Partner | 5.0★ (2) | 12 mi |
| Iteknique Inc | 5.0★ (2) | 19 mi |
| Juniors IT Consulting | 5.0★ (1) | In Fairfield |
| Justfixit Computer Repair | In Fairfield | |
| My It Guys | In Fairfield | |
| Nate's PC Repair Shop | In Fairfield | |
| Nor-Cal Computer Solutions | In Fairfield | |
| PC Service Center - Business IT Support, Managed IT Services & Cybersecurity | 4.5★ (2) | 14 mi |
| R J Computers | 5.0★ (48) | In Fairfield |
| Recall Total Information Management | In Fairfield | |
| Star Computers | 5.0★ (1) | In Fairfield |
| Sunset Systems | 4.3★ (3) | In Fairfield |
| Techsavvy LLC | In Fairfield | |
| Tier 3 Tech | In Fairfield | |
| XtremeTECH Pro | 4.9★ (107) | In Fairfield |
How we ranked Fairfield managed IT service providers
We scored 337 Fairfield 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 Fairfield 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 Fairfield: frequently asked questions
Who is the best managed IT service provider in Fairfield?
By IFR Score, the highest-ranked managed IT service provider in Fairfield, CA is Demandforce with an IFR Score of 62/100. It has 4.5★ from 441 Google reviews. It is open 7 days a week. Intelligent Technical Solutions | ITS (#2) and Bay Computing Group (#3) follow. We ranked 337 managed IT service providers on nine factors, last updated November 9, 2026.
How many managed IT service providers are there in Fairfield?
ITFirmsRanked ranks 337 managed IT service providers serving Fairfield, CA. 1 of them is based in Fairfield; the rest serve it from nearby towns. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.
Which managed IT service providers in Fairfield work on weekends?
120 of 337 ranked managed IT service providers post Saturday hours and 83 post Sunday hours. The highest-ranked open Saturdays are Demandforce (#1), Intelligent Technical Solutions | ITS (#2) and Bay Computing Group (#3). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Fairfield managed IT service providers have?
The median Google rating among 337 rated managed IT service providers in Fairfield is 5.0★, with a median of 11 reviews. Tech 2U has the most, 2,167 reviews, and ranks #20. 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 Fairfield count in this ranking?
Yes, if they are within 50 mi of the Fairfield city center, 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 Fairfield 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 Fairfield
- November 2026: IFR Scores recalculated for 337 managed IT service providers serving Fairfield.
- November 2026: 4 duplicate listings merged.
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