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Best Managed IT Service Providers in South Whittier, CA (2026)

887 managed IT service providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in South Whittier: Sam's IT Solutions, IFR Score 68/100; 5.0★ from 497 Google reviews; open 7 days a week.

  2. 2

    Most-reviewed: Annansys, 713 Google reviews at 4.9★, the most of 887 ranked; ranked #2.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

887 South Whittier managed IT service providers are ranked here by IFR Score, from nine published factors. 365 open Saturdays and 230 open Sundays, based on posted hours. The median Google rating is 5.0★ across 887 rated IT firms.

Top 10 managed IT service providers in South Whittier at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 managed IT service providers in South Whittier at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1Sam's IT Solutions685.0★ (497)Pasadena, 15 mi awaySat · Sun · EveningsOverall
2Annansys664.9★ (713)Chino Hills, 20 mi away—Most reviews
3GenCare Managed IT Services Los Angeles655.0★ (174)Glendale, 21 mi awaySat · Sun · Evenings—
4QuickMountTV™ - Your Trusted TV Mounting & Smart Home Experts!645.0★ (144)Laguna Beach, 22 mi awaySat · Sun · Evenings—
5Forum Info-Tech645.0★ (173)Corona, 28 mi awaySat · Sun · Evenings—
6Tech Expert Guys644.9★ (241)Irvine, 22 mi awaySat · Sun—
7Support.com644.9★ (85)Pasadena, 15 mi awaySat · Sun · Evenings—
8Licensed Electrician Services Inc635.0★ (51)Baldwin Park, 9 mi awaySat · Sun · Evenings—
9Burgi Technologies | Managed IT & Cybersecurity635.0★ (75)Tustin, 21 mi awaySat · Sun · Evenings—
10Intelecis Cyber Security Company Irvine635.0★ (87)Irvine, 24 mi awaySat · Sun · Evenings—

The 887 best managed IT service providers in South Whittier, 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.

  1. Ranked #1 in South Whittier

    Based in Pasadena, 15 mi away

    68/100IFR Score

    Ranked #1 because of its Google rating and service focus: 5.0★ from 497 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 497 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    35 N Lake Ave #710, Pasadena, CA 91101
  2. Based in Chino Hills, 20 mi away

    66/100IFR Score

    Ranked #2 because of its Google rating and service focus: 4.9★ from 713 Google reviews, listed on Google as “Computer support and services”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.9★ from 713 Google reviews
    Address
    15970 Los Serranos Country Club Dr #115, Chino Hills, CA 91709
  3. Based in Glendale, 21 mi away

    65/100IFR Score

    Ranked #3 because of its Google rating and service focus: 5.0★ from 174 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 174 Google reviews
    Hours
    Mon–Tue 12 AM–12 AM · Wed closed · Thu–Sun 12 AM–12 AM
    Address
    3524 Ocean View Blvd, Glendale, CA 91208
  4. Based in Corona, 28 mi away

    64/100IFR Score

    Ranked #5 because of its Google rating and service focus: 5.0★ from 173 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 173 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    160 W Foothill Pkwy Ste 105-231, Corona, CA 92882
  5. Based in Irvine, 22 mi away

    64/100IFR Score

    Ranked #6 because of its Google rating and service focus: 4.9★ from 241 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 241 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat–Sun 12 PM–4 PM
    Address
    20 Corporate Park Ste:118, Irvine, CA 92606
  6. Based in Pasadena, 15 mi away

    64/100IFR Score

    Ranked #7 because of its Google rating and service focus: 4.9★ from 85 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 85 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    150 S Los Robles Ave #400, Pasadena, CA 91101
  7. 63/100IFR Score

    Ranked #11 because of its Google rating and service focus: 5.0★ from 87 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 87 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    10960 Wilshire Blvd #1415, Los Angeles, CA 90024
  8. Based in Lynwood, 8 mi away

    63/100IFR Score

    Ranked #13 because of its Google rating and service focus: 4.2★ from 319 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.2★ from 319 Google reviews
    Hours
    Mon–Sat 10 AM–8 PM · Sun 12 PM–5 PM
    Address
    5138 E Imperial Hwy, Lynwood, CA 90262
  9. #14 Hailo

    Based in Santa Monica, 25 mi away

    63/100IFR Score

    Ranked #14 because of its Google rating and service focus: 4.7★ from 125 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 125 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    2834 Colorado Ave, Santa Monica, CA 90404
  10. Based in Calabasas, 40 mi away

    62/100IFR Score

    Ranked #15 because of its Google rating and service focus: 5.0★ from 130 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 130 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    26635 Agoura Rd #250, Calabasas, CA 91302
  11. Based in Los Angeles, 25 mi away

    62/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 63 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 63 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    12100 Wilshire Blvd Ste 800, Los Angeles, CA 90025
  12. Based in Los Angeles, 22 mi away

    62/100IFR Score

    Ranked #17 because of its Google rating and service focus: 5.0★ from 93 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 93 Google reviews
    Hours
    Mon–Sun 8 AM–8 PM
    Address
    10514 National Blvd #220, Los Angeles, CA 90034
  13. Based in Anaheim, 15 mi away

    62/100IFR Score

    Ranked #18 because of its Google rating and service focus: 4.8★ from 47 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 47 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    5101 E La Palma Ave, Anaheim, CA 92807
  14. Based in Glendale, 20 mi away

    62/100IFR Score

    Ranked #19 because of its Google rating and service focus: 5.0★ from 83 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 83 Google reviews
    Hours
    Mon–Fri 9 AM–9 PM · Sat–Sun 10 AM–7 PM
    Address
    920 W Glenoaks Blvd #209A, Glendale, CA 91202
  15. Based in Pasadena, 15 mi away

    62/100IFR Score

    Ranked #20 because of its Google rating and service focus: 4.5★ from 68 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.5★ from 68 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    150 S Los Robles Ave #400, Pasadena, CA 91101
  16. Based in Woodland Hills, 36 mi away

    62/100IFR Score

    Ranked #22 because of its Google rating and service focus: 5.0★ from 91 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 91 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    6200 Canoga Ave #325, Woodland Hills, CA 91367
  17. Based in El Monte, 8 mi away

    62/100IFR Score

    Ranked #23 because of its Google rating and service focus: 4.6★ from 189 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 189 Google reviews
    Hours
    Mon–Fri 10 AM–5:30 PM · Sat 10 AM–3 PM · Sun closed
    Address
    11833 Valley Blvd, El Monte, CA 91732
  18. 62/100IFR Score

    Ranked #24 because of its Google rating and service focus: 4.9★ from 39 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 39 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    903 E 1st St, Long Beach, CA 90802
  19. Based in Irvine, 27 mi away

    62/100IFR Score

    Ranked #25 because of its Google rating and service focus: 4.7★ from 87 Google reviews, listed on Google as “Computer support and services”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 87 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    18 Technology Dr #141, Irvine, CA 92618

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 887 ranked managed IT service providers here; the rest are on their profiles.

managed IT service providers in South Whittier, ranks 26 to 50
RankBusinessIFR ScoreGoogle ratingDistance
26GetMyDrivers614.5★ (120)15 mi
27AllSafe IT614.9★ (40)20 mi
28Advanced Networks | IT Support and Managed IT Services Orange County615.0★ (35)20 mi
29Relion - Managed IT Services & Business IT Support615.0★ (97)5 mi
30Tech Guardian604.9★ (87)44 mi
31Textron Technologies604.8★ (146)11 mi
32KaufmanIT, Inc. | Managed IT Support & Cybersecurity605.0★ (45)22 mi
33LAN WAN Enterprise - IT Services In Orange County & Irvine605.0★ (174)21 mi
34Be Structured Technology Group605.0★ (65)19 mi
35TechMD604.9★ (134)19 mi
36Rasec TECH IT Services604.9★ (85)36 mi
37Friendly IT Pros605.0★ (29)14 mi
38techie605.0★ (19)18 mi
39WinC Services | Managed IT Services & IT Support Company in Pasadena605.0★ (15)14 mi
40LB Computer Help604.6★ (38)14 mi
41MimiByte605.0★ (16)3 mi
42Los Angeles IT605.0★ (14)14 mi
43Trinity Networx, LLC | Managed IT Services & Support Ontario, California605.0★ (26)28 mi
44STG IT Consulting Group & IT Support Los Angeles605.0★ (122)21 mi
45Miles IT595.0★ (10)8 mi
46CentraLink - Pasadena Advisory and IT Services Company594.7★ (15)15 mi
47FTI Services595.0★ (23)14 mi
48Netready IT595.0★ (71)14 mi
49Productive IT Solutions595.0★ (49)16 mi
50Advanced Networks - Downtown Los Angeles595.0★ (12)14 mi

Also serving South Whittier

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.

Unranked managed IT service providers serving South Whittier
BusinessGoogle ratingDistance
Brothers in Arms IT Services5.0★ (2)11 mi
Comtek Systems, Inc.5.0★ (2)10 mi
Creative One Solutions LLC5.0★ (2)10 mi
e-Mayhem LLC5.0★ (2)9 mi
EIZO Inc.5.0★ (2)10 mi
Glitchgrid IT ServicesIn South Whittier
Good Ol' JVIn South Whittier
I System Pros LLCIn South Whittier
Jafam IT ConnectionIn South Whittier
JPNetworksIn South Whittier
Larson IT Management5.0★ (2)4 mi
Los Angeles IT - IT Support and Managed IT Services East Los Angeles5.0★ (2)11 mi
MV Network Consulting / Technology Services5.0★ (2)7 mi
myRestro – Complete Restaurant Ordering & Marketing System (90-Day Free Trial)5.0★ (2)6 mi
Nettechy5.0★ (2)11 mi
OA Technology4.5★ (2)11 mi
RP Technology Inc.5.0★ (2)11 mi
Seniors Tech TrainingIn South Whittier
Shur-Net Solutions5.0★ (2)8 mi
TechWise Group3.0★ (2)11 mi

How we ranked South Whittier managed IT service providers

We scored 887 South Whittier 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.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn South Whittier data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a managed IT service provider

  1. Ask for a sample service-level agreement and compare response times, support hours and exclusions.
  2. Check how backups are done and tested, and ask when they last restored a client’s data.
  3. Ask which security tools are included and which cost extra (MFA, endpoint protection, email filtering, staff training).
  4. Make sure you, not the firm, own your accounts, domain names and licences.
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. 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 South Whittier: frequently asked questions

Who is the best managed IT service provider in South Whittier?

By IFR Score, the highest-ranked managed IT service provider in South Whittier, CA is Sam's IT Solutions with an IFR Score of 68/100. It has 5.0★ from 497 Google reviews. It is open 7 days a week. Annansys (#2) and GenCare Managed IT Services Los Angeles (#3) follow. We ranked 887 managed IT service providers on nine factors, last updated November 9, 2026.

How many managed IT service providers are there in South Whittier?

ITFirmsRanked ranks 887 managed IT service providers serving South Whittier, CA. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.

Which managed IT service providers in South Whittier work on weekends?

365 of 887 ranked managed IT service providers post Saturday hours and 230 post Sunday hours. The highest-ranked open Saturdays are Sam's IT Solutions (#1), GenCare Managed IT Services Los Angeles (#3) and QuickMountTV™ - Your Trusted TV Mounting & Smart Home Experts! (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do South Whittier managed IT service providers have?

The median Google rating among 887 rated managed IT service providers in South Whittier is 5.0★, with a median of 13 reviews. Annansys has the most, 713 reviews, and ranks #2. 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 South Whittier count in this ranking?

Yes, if they are within 50 mi of the South Whittier 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 South Whittier 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 South Whittier

  1. November 2026: IFR Scores recalculated for 887 managed IT service providers serving South Whittier.
  2. November 2026: 5 duplicate listings merged.