Alex and Poseidon are the best vendor I've used in D.C. -- PERIOD! Fast, reliable and responsive. When I had an manufacturer caused issue with hardware they installed 2 years ago, Alex was there the next day, replaced it free and handled the warranty and return process himself. read more

Excellent and prompt service for Internet and TV connections When a small problem arose the team, particularly Alex, was outstanding in resolving promptly read more

Alex mounted a big screen tv for us. He was on time, extremely professional and did an outstanding job. Highly recommend.

Highly recommend Poseidon Systems. Alex installed a Samsung Frame TV flush against our wall with all wires hidden. The studs in our wall were not regularly spaced but Alex quickly identified a solution. On top of the tv looking great, Alex was easy to work with, flexible in scheduling, and did the job for a fair price. read more

Alex is super professional and always gets back to you really quickly, making communication a breeze and ensuring everything runs smoothly.

Poseidon installed a 65" Samsung Frame and Sonos Arc for us, and we couldn't be happier with the results. We were a little unsure of what we could and couldn't do in mounting our TV above a fireplace and containing the connected devices, but Alex had great suggestions and his team executed them flawlessly. read more

Alex and his team were fantastic! They installed tv wiring, in wall speakers and mounted a tv in our basement. Alex was very knowledgable and guided us on where we should place the speakers as we had some questions. He got our job done quickly and followed thru on everything we discussed. We're very happy with the work that was done. Alex was very professional and had great customer service. Highly recommend! read more

The team at Poseidon Systems are great! My new home builder left a bunch of unfinished wires for AV equipment and they were able to hook up everything and look very professional. They were on time, respectful, and cleaned up afterwards. Pricing was very good too. Highly recommend! read more

Did an amazing job in creating the home audio setup I had been wanting for years! I finally moved into my new home and knew what I wanted, but Alex and his team laid out the options and delivered exactly what I had been looking for. Can't recommend Poseidon enough! read more

These guys are great! We did a major house renovation a few years ago and our contractor brought in Nick from Poseidon Systems to do the alarm system and a few other low-voltage items around the house. Nick did a fantastic job. He was very careful and strategic about where to place the various sensors around the house and was very thoughtful about the installation, testing all of the sensors many, many times to make sure they worked as intended. As we've lived in the house, we've had Nick back a number of times to add items to the system. He has always responded to our calls quickly and professionally and we've had nothing but positive experiences with him. I should also add that his prices are reasonable. We looked into installing an off-the-shelf DIY system (e.g., Ring alarm system), but it really wasn't that much cheaper. I would rather hire a pro like Poseidon Systems! read more

Used them for a security system, and they were very diligent about working with me to make sure that the very complicated project was done right. Importantly, it did not feel like they were trying to up-sell me on anything, unlike the quote that I got from ADT. read more

I'm giving 4.5 out of 5! (But it doesn't show up that way with the stars unfortunately) If you have a custom television installation as we did, Alex did a terrific job. We had a large HDTV to place above a fireplace on a wall with 6-inch wood slats. Without going into the details, it got complicated between drilling homes to hide the wires. He came back to paint afterwards, still keeping to the original price despite the extra time spent to complete the work. He does more than TV installations, with increasing demand for home automation/integrations. He can make recommendations, but also follow your lead if you have specific ideas about what you want done. Alex was thoroughly professional and communicated well between email and phone. He was in contact rapidly after I made the initial request. read more

Alex unmounted a 50 inch plasma TV in the house we were moving from and mounted it in the house we moved to. I purchased a soundbar for the new house, and he installed that as well. I asked him to hide the cable box for a clean looking installation, and he did that as well. He's extremely nice and does great work at a very fair price! read more

A week ago, the wife and I decided that we wanted to mount a TV on the opposite side of our cable connection wall. I went on to Yelp and searched "Mounting TV." I sent the same message to each business describing the job for which I was looking to do to include a photo of the room. Each business wrote back some more detailed than others but the common thread which I discovered from each company was that they wanted to run the cable wire around the room via staples then concealing the wire with wire-mold. After much debate we really thought the wire-mold was tacky and we wanted the wires snaked through the wall to the opposite wall so that the wires were hidden. Out of the 20 messages sent out to business, 5 business were willing to snake the wire to the other side. Out of those 5 businesses 4 of the business were willing to snake the wire then patch the holes using patches and leaving me (the customer) left to finish the job of sanding and or fixing the patch or applying mud and leaving me to sand down the mud. None of these 4 businesses were willing to sand the mud and or paint. My wife and I eliminated those 4 businesses and decided we needed to find a business willing to do the entire job and not leaving the job short by not sanding the patch and painting. At last, we find Poseidon Systems and Alex. To begin, Alex is intelligent, professional and described the project from beginning to end. I felt relieved that after much research and interviewing that Alex fit the project to a T. On the day of the project, Alex came prepared and mapped out his work. The end result of the project was exceptional. Alex snaked the cable wires to the opposite wall, mounted our TV and used mud which we wanted over patching to give the wall the treatment it needed to return to its former self. Alex did a phenomenal job sanding and then re-painting the wall back to its original form. After interviewing all the possible TV mounting services in the DMV I can honestly say that Alex did the job as described and would highly recommend him! read more

Alex, just wanted to thank you for an amazing job! We love it. Second time using Alex for our new home. Highly recommended. read more

Poseidon Systems, Inc. - Security Systems Near Me

Alex is a pro's pro. He came in and got the job done dispute some unforseen elements. He was a pleasure to work with for a second time. Alex continues to take the TV installation world by storm read more

Poseidon Systems, Inc. - Security Systems Near Me

Very happy with this Company. Alex is very helpful and always wiling to help you, and make sure all the services he provides are great. Prices, timing, quality is all AA+++. Will be using him again. Thank you read more

Update : I have included email conversations with the business, telling them about the mistake they made, with them acknowledging the speakers were in the wrong place and they weren't sure why, even offering up excuses. And as seen in the email, this correspondence was a little over a year ago. A very dishonest business that blames the customer for their mistakes, does not take responsibilty for fixing the mistakes they make even after acknowledging in emails, and then denied making the mistake all together when called out. I would not do business with this company if I were you. If you do, good luck. read more

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Alex quickly responded to my request regarding TV installation and mounting and offered an extremely fair price for the services requested. He was professional and communicative in the days leading to my appointment. On the day of installation, Lucas arrived wearing a mask and followed safety precautions throughout his time in my home. The task was completed in an efficient fashion but was incredibly well done. I will certainly use Poseidon Systems for any future home theater or security related needs! read more

Excellent full service A/V work and advice. Alex came to help move outlets, hide cabling, and mount an awkwardly shaped WiFi access point. He did a great job. I would highly recommend Poseidon System's service and planning hiring again for additional work in the future. read more

Great experience with Alex. Had him come to mount two big screen tvs on concrete pillars. He was very Professional and knowledgeable. Two drill eating concrete pillars didn't stop him from getting the job done. He even cleaned up after the job. Would definitely recommend and hope to use again. read more

Easy to make an appointment. Alex arrived on time and mounted the tv professionally and quickly. Looks great. Highly recommend Poseidon Systems. Very friendly and professional. Elisabeth read more

Alex has now installed two TVs for me on separate occasions and once again, I'm very satisfied with the work he's done. I booked the second TV installation recently and he was able to accommodate my schedule nicely. I will definitely be calling him in the future for more work, and he is someone who I would absolutely recommend to my friends and family. Top notch dude. read more

Alex and Randy overcame numerous unforeseen obstacles including a covered up window. The result was an excellent on budget timely installation. I highly recommend Poseidon Systems. read more

Alex's bid to mount our TV was far lower and he had overwhelmingly positive reviews on Thumbtack. He arrived on time and go right to work mounting our TV on the wall. He'd had experience with the mount we purchased and completed the project in under an hour. He was very professional and the TV looks great. Definitely would hire again! read more

I am surprised this company does not have more reviews on Yelp- they've got to get more active here. The TV mounting over the fireplace was just completed. I'd recommend Alex for the next job- mine or other's. He was extremely nice, polite and friendly, an increasingly rare quality these days. He was also very patient and when I asked for a small adjustment after the job was done, he didn't hesitate to step out to go to the nearest hardware store to pick up the missing pieces to finish the job to my satisfaction, even though it added almost an extra hour to his job. His fee was competitive to begin with but for the above qualities it was totally worth more than that. Thanks Alex! read more

Alex was amazing. We had a very intense job. He mounted a tv, soundbar, and large floating entertainment console. He created new electrical outlets, moved the cable box, and wired around 2x4s in drywall. All in all it took about 7 hours and he never took a break. He brought his own vacuum and cleaned. Everything was centered and aligned perfectly. Initially I thought the price estimate was high but after the work I watched him do it was completely justified. read more

Alex assembled a TV stand; mounted a 55-inch TV to the stand; installed a soundbar; made all connections; and explained it all to me including operations of the remotes. I found Alex to be knowledgeable & skilled, also friendly. I am certain I will seek out his services when I need them again and I am grateful for his service. read more

Alex is a great technician. He resolve all our problems with our equipment. He was patient and very kind. He taught us how to manage the equipment. He is so profesional. Hope we can count with him in the future. read more

Had a 10 year old in wall speaker that was not working properly. Alex came to my house, and diagnosed the problem as a loose connection within the speaker, removed the speaker, was able to repair the speaker (needed soldering) and reinstall. He was prompt , courteous , priced fairly and was a pleasure to deal with overall. Would highly recommend. read more

We called and made an appointment with Alex. He came and hung three of our televisions in our office. His quote was much lower than most of the tv hanging services in the area. He was easy to deal with and very friendly. He did a great job hanging the televisions. When we realized the television in our kitchen area was hung a little high for us, we called him, and he adjusted the television height at no extra cost to us! We will definitely use him again in the future. read more

Alex was super knowledgeable and responsive. He put in the overtime on a Friday night to get all of our AV setup as we moved into our new home and as we were planning a Super Bowl party at the same time. Great service! read more

Alex did an excellent job. He was friendly, reasonable,and professional. He hid the wires for 2 mounted TVs and patched up a hole in the wall from a previous electrician who incorrectly attempted to hide the wires. We will certainly use him again!!! read more

We interviewed about six companies to install a video system into our condo building. Alex and his partner were very professional. They installed an eight (8) surveillance camera system in our condo building, partnering with our Board members to decide where the cameras should to be positioned. They trained us to operate the system, and they've been coming back when adjustments are needed. Our Board is very pleased. We highly recommend them. The system has already been valuable to our Condo Association. read more

Gave us a quote. Very friendly, but did not end up using them.

We were looking for some one to help us with wiring for Our home theater set up in the basement . We did interview so many people and we found Alex being very knowledgeable and competent . He helped us to choose the right things . He is very reasonable and reliable . He does not try to sell things and force something on you . When he recommends something he has very clear justification and reasoning behind it which we really loved . He also helped us in mounting our flat panel TV . He was very clean in his work and did the best job. We are happy with his work... and we will recommend Alex to any one who is looking for AV and media services read more

Alex and Nick installed a 60" TV above our fireplace, with cabling done down to a basement closet. Installation was quick (even though there were some quirks with the walls), they were friendly and helpful with suggestions, and the end result was very clean and seamless. Easy group to work with, great workmanship, reasonable prices. Couldn't have asked for a better experience! read more

I needed help at the last minute un-mounting my TV and he came through. Responded fast every time I sent a message and arrived on time.

Alex was absolutely outstanding. He was quick to respond to my initial questions here. Once we connected, he came out for a free review of my setup. He took the time to explain to me all of my options, even the cheap ones where he would have made little or NO money. He was determined to get my current system functioning again when he could have easily told me I HAD to get a new one. I felt really comfortable talking to him - there was never any sales pressure or technobabble - even though I am a little geeky. In the end, I felt that my best option was to replace my system and he scheduled me immediately. He had the unit in stock and I was up and running within 48 hours of initial contact. When the time for the bill came, it was LESS than what he quoted originally. He is a trustworthy guy, who truly knows his stuff. You can not go wrong with Alex and Poseidon Systems for your system. read more

Wow! Poseidon Systems, was amazing at understanding the requirements of our project, arriving in a timely fashion, meeting our business needs, and interacting in a professional and perceptive manner. We hired him to integrate a small business computer network. All computers are now linked just as we wanted them to be, including hard wiring between offices. It's rare to find a company that hits all the high notes; Poseidon definitely delivers. I highly recommend this company. read more