Security system supplier · Tustin, CA · reviewed since 2020
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%90+57.2Reliability 28%82+23.2Replies to reviews 8%45+3.7Experts Score= 84Not enough data for value; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.84SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#31 of 44 security system installersiPosition by Experts Score among all companies we track in this category. · better than 30%
4.9★★★★★648 Google reviews · 24 photos
96%five-star reviews
5.00★last 12 monthsiAverage stars on reviews from the last 12 months only.
3.5%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
Alert 360 Home & Business Security Los Angeles at a glance
Google reviewers rate Alert 360 Home & Business Security Los Angeles 4.9 out of 5 based on 648 reviews, with the owner responding to 61 percent of them. Customers frequently praise technicians for being punctual, knowledgeable, and professional, noting that staff explain system functions clearly and complete repairs efficiently. Common complaints involve communication lapses, such as missed arrival notifications or delayed follow-up visits, and isolated instances where systems failed during security breaches or left equipment in a non-functional state.
Google rating: 4.9 out of 5 from 648 reviews (96% five-star).
Reviews on this page: 648 Google reviews (394 with written comments, 2 with photos).
Owner responses: the business replied to 61% of reviews.
Most recent review: October 15, 2026.
Service: Security System Installer serving Tustin, California.
Data from Google, last updated October 28, 2026.
Score profile vs other security system installers
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and satisfaction; weakest: replies to reviews.
This companySecurity System Installers median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Alert 360 Home & Business Security Los Angeles: 90/100 on this factor. Category median: 92.A
90
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Alert 360 Home & Business Security Los Angeles: 82/100 on this factor. Category median: 92.A
82
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Not enough reviews for this factor yet. Category median: 98.–
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ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 100.–
–
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Alert 360 Home & Business Security Los Angeles: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Alert 360 Home & Business Security Los Angeles: 45/100 on this factor. Category median: 45.C
45
Bar = this company · dark tick = category median.
Star ratings
648 Google reviews we collected
4.9of 5
5 stars62096%
4 stars152%
3 stars30%
2 stars30%
1 star71%
Praise vs complaints
Phrases our text analysis found in 394 written reviews
98%praise
Praise61798%
Complaints132%
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude24739%
Quality & results13822%
Speed & response13521%
Communication518%
Would recommend366%
Price & value142%
Honesty & trust91%
What customers talk about
We read 394 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“He is prompt, knowledgeable, and consistently courteous.”
“He discussed the problems I was having with my cameras He fixed them, was very patient and thorough in explaining and fixing the problems.”
“Poor Service, they didn’t fix what needed to be done”
“The company is always fast and efficient and helping for whatever you might need help with.”
“In my opinion, Alert360 is unreliable, unresponsive, and completely unprepared for real-life emergencies.”
“Jason was especially great—he was very professional, patient, and answered all of my questions.”
“I really appreciate his help and highly recommend Alert 360 to anyone looking for a reliable home security company!”
“Alert360 is well worth every penny I pay and then some.”
“Locked-in contracts, cancellation fees, and more pressure to “upgrade” with them.”
“Felipe is friendly, professional, and a knowledgeable expert that we trust.”
People customers mention
Tina9 reviews
Felipe8 reviews
Victor8 reviews
Scott7 reviews
Alarm5 reviews
Chris4 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Recent reviews
DDaniel2 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★
Scott at Alert360 is an excellent technician. He is prompt, knowledgeable, and consistently courteous. I have been very impressed with both Scott and Alert360. This is the third time he has visited our home over the past few years. Alert360's customer service is professional and courteous, and the team reliably completes whatever work is required.
MMajid3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 weeks ago★★★★★
I had a great experience with Alert 360. They were very professional, helpful, and took care of everything we needed. Jason was especially great—he was very professional, patient, and answered all of my questions. I really appreciate his help and highly recommend Alert 360 to anyone looking for a reliable home security company!
MMarianne3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★
We had service on our system today. Our technician, Felipe, who has serviced our system in the past, provided an outstanding level of customer service. Felipe is friendly, professional, and a knowledgeable expert that we trust.
RRyta2 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★
I am very pleased with the service. Dominick was absolutely excellent! He discussed the problems I was having with my cameras He fixed them, was very patient and thorough in explaining and fixing the problems.
JJob7 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★
Alert 360 technician was able to debug the root cause of the issue, and replace the defective device.
PPedroLocal Guide · 38 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★
Knowledgeable and experienced technician updated my alarm control unit. Explained how the new system works in an easily-understood manner. Inspected the existing sensors and replaced one that was not working properly. Excellent job.
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Carolyn! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
D
Daniel Dolan2 reviewsiTotal number of Google reviews Daniel has written across all businesses on Google Maps, not just this one.
Scott at Alert360 is an excellent technician. He is prompt, knowledgeable, and consistently courteous. I have been very impressed with both Scott and Alert360. This is the third time he has visited our home over the past few years. Alert360's customer service is professional and courteous, and the team reliably completes whatever work is required.
Response from the owner · a week ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Daniel! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
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Majid Ravan3 reviewsiTotal number of Google reviews Majid has written across all businesses on Google Maps, not just this one.
I had a great experience with Alert 360. They were very professional, helpful, and took care of everything we needed. Jason was especially great—he was very professional, patient, and answered all of my questions. I really appreciate his help and highly recommend Alert 360 to anyone looking for a reliable home security company!
Response from the owner · 3 weeks ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Majid! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
M
Marianne M3 reviewsiTotal number of Google reviews Marianne has written across all businesses on Google Maps, not just this one.
We had service on our system today. Our technician, Felipe, who has serviced our system in the past, provided an outstanding level of customer service. Felipe is friendly, professional, and a knowledgeable expert that we trust.
Response from the owner · a month ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Marianne! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
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Nereida Morales11 reviewsiTotal number of Google reviews Nereida has written across all businesses on Google Maps, not just this one.
Absolutely great service. The technicians are very knowledgeable and polite.
Response from the owner · a month ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Nereida! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
V
val saucedo5 reviewsiTotal number of Google reviews val has written across all businesses on Google Maps, not just this one.
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Val! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
R
Ryta Jones2 reviewsiTotal number of Google reviews Ryta has written across all businesses on Google Maps, not just this one.
I am very pleased with the service. Dominick was absolutely excellent! He discussed the problems I was having with my cameras He fixed them, was very patient and thorough in explaining and fixing the problems.
Response from the owner · a month ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Ryta! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
J
Job Alvarez7 reviewsiTotal number of Google reviews Job has written across all businesses on Google Maps, not just this one.
Alert 360 technician was able to debug the root cause of the issue, and replace the defective device.
Response from the owner · 2 months ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Job! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
S
Salvatore Perchez4 reviewsiTotal number of Google reviews Salvatore has written across all businesses on Google Maps, not just this one.
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Salvador! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
P
Pedro DelemosLocal Guide · 38 reviewsiTotal number of Google reviews Pedro has written across all businesses on Google Maps, not just this one.
Knowledgeable and experienced technician updated my alarm control unit. Explained how the new system works in an easily-understood manner. Inspected the existing sensors and replaced one that was not working properly. Excellent job.
Response from the owner · 2 months ago
Thank you for the amazing 5-star review. It's wonderful to hear that you're happy with your Alert 360 security system, Pedro! Our Corona team takes pride in providing top-notch service and technology to all of our CA customers. Thank you for choosing Alert 360 Home Security. If you ever have any other questions or concerns, please do not hesitate to call us @ (213) 602-9001.
