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Tech Security USA

Security system supplier · Tustin, CA · reviewed since 2016

How 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 55%74+40.4Reliability 24%49+11.9Value 14%25+3.5Replies to reviews 7%26+1.8Craft & service penalty62−3.8Momentum penalty61−3.9Experts Score= 50Grade C: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.50SCORE
CGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#43 of 44 security system installersPosition by Experts Score among all companies we track in this category. · better than 2%
4.8 ★★★★★ 237 Google reviews · 18 photos
95%five-star reviews
4.43★last 12 monthsAverage stars on reviews from the last 12 months only.
15%1–2★, last 20 reviewsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
8%reviews answered by the owner
Sep 2026latest review

Tech Security USA at a glance

Customers generally praise the business for professional service, clear communication, and reasonable pricing on security camera installations and device repairs. Recurring themes include quick turnaround times and helpful staff who avoid unnecessary upselling. However, low-star reviews highlight concerns about screen quality, unexpected price increases, and instances of additional damage occurring during repairs.

  • Google rating: 4.8 out of 5 from 237 reviews (95% five-star).
  • Reviews on this page: 237 Google reviews (228 with written comments, 1 with photos).
  • Owner responses: the business replied to 8% of reviews.
  • Most recent review: September 30, 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)Each 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: satisfaction and craft & service; weakest: value.

Satisfaction74Reliability49Craft & service62Value25Momentum61Replies to reviews26Satisfaction: 74 (median 92)Reliability: 49 (median 92)Craft & service: 62 (median 98)Value: 25 (median 100)Momentum: 61 (median 100)Replies to reviews: 26 (median 45)
Tech Security USASecurity System Installers median0 = centre, 100 = best
SatisfactionSatisfaction · 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.Tech Security USA: 74/100 on this factor. Category median: 92.B
74
ReliabilityReliability · 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.Tech Security USA: 49/100 on this factor. Category median: 92.C
49
Craft & serviceCraft & 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.Tech Security USA: 62/100 on this factor. Category median: 98.B
62
ValueValue · 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.Tech Security USA: 25/100 on this factor. Category median: 100.D
25
MomentumMomentum · 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.Tech Security USA: 61/100 on this factor. Category median: 100.B
61
Replies to reviewsReplies 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.Tech Security USA: 26/100 on this factor. Category median: 45.D
26

Bar = this company · dark tick = category median.

Star ratings

237 Google reviews we collected

  • 5 stars22495%
  • 4 stars52%
  • 3 stars00%
  • 2 stars10%
  • 1 star73%

Praise vs complaints

Phrases our text analysis found in 228 written reviews

  • Praise44998%
  • Complaints92%

Topic share

How often each topic comes up in the written reviews

  • Speed & response11024%
  • Price & value10322%
  • Would recommend8118%
  • Staff & attitude7717%
  • Quality & results6414%
  • Honesty & trust184%
  • Communication51%

What customers talk about

We read 228 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “They were quick and reasonable in replacing the battery for my MacBook Pro.”
  • “…ineer fixed it in a few days (he had to order the battery) and it was reasonable priced, very good, thank you…”
  • “Amir is a great representative of the company, and we highly recommend him!”
    “will not use and other repair store.”
  • “Allan and his team were very professional, courteous and clean”
  • “We truly appreciated his attention to detail and excellent customer service.”
    “Tried to use the phone, but the buttons didn't work.”
  • “He was so professional, friendly, welcoming, honest and trustworthy ‼️✨ Fixed my battery to my iPhone 6”
  • “He explained everything clearly and made sure we felt comfortable using the system before he left.”

People customers mention

  • Savannah 15 reviews
  • James 7 reviews
  • Samsung 4 reviews
  • Xfixit 4 reviews
  • Verizon 3 reviews

praise complaint · found by our text analysis, Google review wording unchanged.

Recent reviews

PDX7 reviewsTotal 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. · 4 weeks ago★★★★★

Tech Security USA provided excellent service! I’m very happy with my experience and truly appreciate their help. highly recommended!

Charle1 reviewTotal 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★★★★★

Allan and his team were very professional, courteous and clean We got the AI system, which is great

Customer photo from Charle's reviewCustomer photo from Charle's review
AranLocal Guide · 12 reviewsTotal 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. · 4 months ago★★★★★

Amir was fantastic! He took the time to listen to our needs and helped us find the right security camera setup for our home. He was professional, knowledgeable, and very patient throughout the entire process. He explained everything clearly and made sure we felt comfortable using the system before he left. We truly…

T1 reviewTotal 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. · 6 months ago★★★★★

Found this business through FB marketplace while searching for internal hard drives. I bought many working used internal hard drives from Alan and they all work GREAT! He sold them to me at a good price. Alan is great with communication and is friendly and professional. Easy to work with! This business sells lots…

Carol1 reviewTotal 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. · 6 months ago★★★★★

Very professional, and great customer service! I was very satisfied with the job they did and highly recommend them.

Baryalai2 reviewsTotal 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. · 6 months ago★★★★★

I visited the Tech Security USA orange to install security cameras for my home. I found it a very professional company, with high quality products that were made me impressed. I recommend it to anyone who are looking a professional security cameras company in onrange city of Orange County CA.

Photos

Customer reviews

4.8 ★★★★★ 237 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
PDX CARS & TRUCKS7 reviewsTotal number of Google reviews PDX has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Tech Security USA provided excellent service! I’m very happy with my experience and truly appreciate their help. highly recommended!

Charle B1 reviewTotal number of Google reviews Charle has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Allan and his team were very professional, courteous and clean We got the AI system, which is great

Aran ZareiLocal Guide · 12 reviewsTotal number of Google reviews Aran has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Amir was fantastic! He took the time to listen to our needs and helped us find the right security camera setup for our home. He was professional, knowledgeable, and very patient throughout the entire process. He explained everything clearly and made sure we felt comfortable using the system before he left. We truly appreciated his attention to detail and excellent customer service. Amir is a great representative of the company, and we highly recommend him!

Response from the owner · 4 months ago

Hello, Thank you for choosing us for your safety and security. Our GOAL is always keep our customers happy and satisfied of our products and service. We are here to help you if you any questions or concerns. Your security and safety is our priority. Stay Safe, Tech Security USA Management,

T Hanh1 reviewTotal number of Google reviews T has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Found this business through FB marketplace while searching for internal hard drives. I bought many working used internal hard drives from Alan and they all work GREAT! He sold them to me at a good price. Alan is great with communication and is friendly and professional. Easy to work with! This business sells lots of high quality tech items. I specifically saw many high quality and advanced security cameras when was there. Highly recommend visiting and buying from this business!

Carol Dikenta1 reviewTotal number of Google reviews Carol has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Very professional, and great customer service! I was very satisfied with the job they did and highly recommend them.

Baryalai Nasrat2 reviewsTotal number of Google reviews Baryalai has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I visited the Tech Security USA orange to install security cameras for my home. I found it a very professional company, with high quality products that were made me impressed. I recommend it to anyone who are looking a professional security cameras company in onrange city of Orange County CA.

Andy Lopez1 reviewTotal number of Google reviews Andy has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

“Edit (this review is not “spam” which the owner claims it is and the story is absolutely real however it was about 2 years ago and if I wasn’t shy back then(9th grade) or I wish I had done/said something about my dad and I being taken advantage of as it was a scam (quoted at around $150 but after having to wait 3weeks instead of 3 days for the guy to charge us $300 for a cheap screen that no longer had a haptic button or working Touch ID along with many white pressure dots along the edges). Do not go here. If you look at most of their 5-star reviews, they are older than 7 years. I went here recently to fix my iPad Air (3rd gen). The problem was the screen's backlight wouldn't work, so it would just show a black image. The technician said he could get it done for around $150 and in 2-3 days he would call us (my dad and I). After a week of waiting, we decided to call but to no avail. We went to the place to check up on the work done, if any. We got there and the iPad was in the exact same spot as the day we left it there. The guy told us it would be ready in about 4 days, no later, and that he would call us. We never got the call, so we went back after about another 3 days of waiting for a call (2 weeks now). After waiting, we went back to the store for the iPad, and it appeared to us as if he had just gotten started by breaking the screen to replace it. After another week, we came back and he pulled it out from a drawer saying something along the lines of, "I was about to call you guys." The screen was working, but it was clearly a cheap screen that was ordered online, and the Touch ID didn’t work anymore. The button was replaced with a non-haptic one. There are many white dots along the edges of the screen that look as if someone pressed their thumb down too hard for too long. The guy said with all the "extra" work done to it, the new total would be $300. When my dad and I looked at each other, we knew that wasn’t right, but I watched my dad grab his wallet and pay. I wish I had said something because we were taken advantage of, and after a week, the iPad's screen isn’t functioning properly as it feels unresponsive.

Response from the owner · Edited 5 months ago

Hello If, you are real person come here show me the receipt, i will return your money back but i don't think you have any address or any receipt. This review is a Spam unfortunately competitors can not see how we take care of our customers. we do not repair and touch any iPad, also we never had any customer Son and DAD in last 2 years. (Fake Story) if, we charged you come here and bring your receipt we will pay you but i don't think you are real.

Hu Johnson Jr1 reviewTotal number of Google reviews Hu has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Will somebody please tell the owner to stop responding? She’s only validating the bad reviews.

RickLocal Guide · 113 reviewsTotal number of Google reviews Rick has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Little messy inside but brought an old Moto Z2 Play in to finalize my failed battery self install. Done when promised, phone looked as good as new and works fine. I'm happy.

Tre Way1 reviewTotal number of Google reviews Tre has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Garbage screen quality do not come here the screen is more different then a regular apple screen they use low quality screens the whole screen shattered and has black lines throughout it after a tiny drop with a screen protector.

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