Is your current IT company taking too long to respond to your issues? Are you tired of wasting time sitting on hold with tech support while your employees’ productivity plummets? Then, it’s time you partner with a new provider of computer IT services for businesses in the DC Metro area!

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With real people answering the phone and proactive IT solutions, Computer Services Unlimited has spent over 30 years building a solid reputation as an IT company. When you choose us for your business, we’ll provide you with current and cost-effective business computer services. Our business clients trust us as their IT consulting company to manage their IT needs with dedication and expertise.

If you are a business owner searching for a new managed IT service provider in the DC Metro area, give us a call today! When your company’s network is running slow or causing problems, we’ll help you and your team get back to work quickly!

Start enjoying fast, friendly, and highly responsive business computer services. We serve companies in Chantilly, Fairfax, Reston, Leesburg, McLean, Washington DC, and all surrounding DC Metro areas. Get started with a FREE network audit and consultation today.

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Many businesses are hesitant to switch IT companies. Even if you're unhappy with your current IT service provider, it seems like too much hassle to change. Plus, in the back of your mind, you know your current IT company has complete access to your systems, and you're nervous about cutting ties. We get it. Here's how we make switching easy!

Step 1: Evaluate Your Network

Onboard | Audit | Document

Your team will meet us onsite, so we can inspect your network and create new passwords, revoking your old IT company’s access. Plus, we document everything so you always have complete control of your systems.

Step 2: Secure Your Network

Update | Stabilize | Plan

Next, you’ll work with us to create an IT roadmap that includes updating and securing your network. Our team does all the heavy lifting, so you can sit back and relax as your business is better protected.

Step 3: Monitor Your Network

Manage | Solve | Advance

Finally, you focus on running your business, and we will handle your IT needs! From monitoring your network and repair issues to enhancing security with better data backup and recovery, you’ll be all set to go!

A man in a flannel shirt expresses frustration at his laptop.


You work hard for your business—whether you’ve built it from the ground up or have taken new ownership of it. So, when your technology doesn’t work how it should, or your current IT company is unreliable and hard to reach, it’s time to give your business the IT support it deserves.

Don’t let the threat of cybercriminals stealing your data or your employees unknowingly giving access to your network keep you up at night anymore. With information technology solutions for businesses from CSU, you can count on fast, reliable security services and network support 24 hours a day, seven days a week. With various types of IT services that you can customize to fit your business needs, you can quit dealing with technology problems and start focusing on what really matters—moving your business forward. Get in touch with our team today to schedule a consultation and give your business the IT support it deserves.


If your current IT plan contains services you don’t use, you’re wasting money on things you don’t need. One size does not fit all, and every business should have a customized IT plan. That is why we listen to all your IT concerns and needs to develop a customized plan to fit your specific business. Read about our business computer IT services below and reach out to see how we can customize an IT plan to suit your business’s needs.

Managed IT Services

As your IT company, we handle all of your business computer services for a flat-rate fee. We offer tailored packages, predictable costs, ramped-up productivity, and 24/7 customer support. If your current managed IT service provider isn’t cutting it, speak with an expert member of our team and see how we can alleviate any and all of your IT concerns.

Relieve IT Stress

Co-Managed IT

If you already have an internal IT staff, having an external IT support company on your side can be an excellent business strategy. This service provides assistance to your existing IT staff when they are inundated with work or don’t have the skills necessary to do a complicated project or upgrade. Ensure your business always has the IT support it needs to be successful.

Cloud Computing

Cloud-based platforms improve collaboration on your team by allowing employees to access, share, and edit documents in real-time, regardless of location. You’ll get security for your network and information systems, 24/7 customer service and support, data protection, and tools you can use every day. Control and manage the systems you need, when you need them.

Work From Anywhere

Remote IT Services

With the traffic issues around the DC metro area, you don’t have time to wait for a tech to come to your job site. With remote IT services, we can provide many of the IT services we offer in person easily and quickly through a network connection. Our remote IT solutions are affordable and quickly get your business the help it needs when it needs it.

VoIP Phone Services

Stop using an outdated landline or phone system that doesn't meet your communication needs. Our VoIP phone services grant you access to features you’ll actually use, come with a low-cost and easy installation, and can take on your company’s workload. It can even integrate with your CRM software for better customer data and insights.

Get More From Your Phones

Network Security

Your network is the lifeblood of your business, so keeping it protected is of utmost importance. That’s why you need to partner with an IT services firm that understands just how vital network security is. We can keep your data safe with security updates, firewall protection, password protection, antivirus software, and so much more.

Keep Hackers Out

IT Consulting

Do you ever wonder if you’re making the right choice with your technology? With IT consulting, we help you choose the best solution for your IT inefficiencies. You’ll receive a customized plan to address the issues holding you back. As your IT project manager, you’ll never have to take a shot in the dark with your technology decisions again.

Be Confident In Your IT

Backup and Recovery

Prevent the unexpected from ruining your company. Data backup solutions and recovery services include planning for unforeseen issues, safeguarding your business’s information systems, and speedy recovery time. We ensure your data is safe and that you have peace of mind knowing you can always access your data, no matter the disaster.

Plan For The Unexpected

Compliance Services

Like many businesses in the DC metro area, you may contract with the Department of Defense for various reasons. When this is the case, you must follow strict CMMC requirements to keep those contracts with your company. We can help you achieve and maintain your CMMC certification, NIST, and PCI DSS compliance so you don’t lose your DOD contracts.

Meet Compliance Standards

Cybersecurity Training

Did you know that your employees are your biggest online threat? They unknowingly click on links in phishing emails, set easy-to-guess passwords, and share personal information on social media. All these common practices practically roll out the red carpet for cybercriminals. Fight against cybercrime with our cybersecurity training.

Train Your Frontline


When your business needs computer IT services, you don’t want to be just another number in the system. You need personalized services that get results quickly so you can focus on running your business. When you partner with a company that understands business IT support services, like us, that’s precisely what you’ll get!

We understand business needs as a family-owned, operated IT company in the DC Metro area. We focus on being an IT consulting firm you can trust and count on every day as a business owner. Our reputation—built over the last 30+ years—is that of trust and expertise because we genuinely care about helping your business succeed.

Every relationship we have with our clients is valuable. You’re never just a number to us. We always keep the "yoU in CSU" by putting our clients first, and we look forward to making their business dreams easier to achieve by providing the highest quality IT services, computer network expertise, and help desk support.

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Why Choose Us as Your IT Company?

When you choose us, you choose a respected and trusted business computer services company with over 30 years of IT experience. Put that experience to work for your company and enjoy fast response times to IT issues (often before you even know there’s a problem), continued education for you and your staff, and the business IT support you deserve.

Superior Customer Support

Nothing is worse than having a major issue with your network and sitting through a series of phone prompts just to reach a service technician. When you call us, you will always reach a live person who will resolve your issues quickly. And, when you have an emergency or need after-hours help, we ensure you get the support you need to get back to work. Our remote support specialists are always available to help, even if we can’t get a tech out immediately to your location.

Expert Staff

Your IT security solutions team should be well-educated in various types of network and IT issues and the latest compliance requirements. We invest in our staff by offering them ongoing training, including HIPAA compliance and the latest technology and information systems. We believe in pushing ourselves as an IT company to stay on top of the latest technological advances and growing IT needs that businesses like yours have. Give your business the best in the DC metro area.

Commitment to Our Clients

We value our business clients and dedicate our time to their specific company needs. We execute our managed IT solutions with expertise and professionalism while also speaking to our clients in terms they will understand. We are committed to providing solutions to your IT problems so you can get back to focusing on running your business instead of worrying about IT nightmares like lost data, cybersecurity breaches, phishing schemes, and more.

Get Dedicated Business IT Support Services

If you’re a company that relies on technology and information systems for daily operations and has 10 to 50 workstations (even up to 100), you’re the kind of client we often work with. Our computer IT services company works with a broad cross-section of industries and business sizes.

No matter the size of your business, we provide a range of managed IT services, IT consulting, and onsite and remote computer support in Chantilly, Fairfax, Herndon, Reston, Sterling, Dulles, Leesburg, McLean, Tysons, Vienna, Burke, Oak Hill, Washington DC, Rockville, Bethesda, Annandale, Alexandria, Springfield, and the surrounding DC Metro area. Don’t see your city? Don’t worry—we will go there—just give us a call at  703-968-2600.

A group of business people smiling while working on their computers.

What Our Customers Say...

Wonder what it’s like having business IT support services from us? Learn about it from some of our happy customers!

We Took the Leap to Have Our Systems Monitored Consistently

CSU was instrumental in defining deficiencies within our computer equipment and network. They provided us with recommendations and a proposal to watch our Server 24x7, something we had never done before. Now if our Server has problems, CSU knows about it immediately and is able to remedy the problems, most times remotely. In addition, our operating system is kept up to date, as well as our virus protection. All of this is done without it affecting our daily use of our systems. We have been very pleased we took the leap to have our systems monitored consistently and we are very pleased with the staff’s technical abilities and customer service.

dr luce Dr. Luce DVM
Their Skilled Team Works Hard To Ensure Our Full Functionality

The ABRA gives us the ability to function in an electronic medical record environment with the confidence that we have constant redundant backup.  We have already relied on this fallback server one time when we had to have a raid hard drive replaced on our main server.  The technology allowed us to continue providing patient care with minimal interruption.  The best outcome of using CSU’s ABRA service is having access to their skilled team for other IT issues that may arise in our practice.  In the example above, Chuck Sherman helped repair the hardware issue that we had on our main server so that we could get back to full functionality.

taylor with dog Dr. Taylor CEO
They work remotely and are ready at a moment’s notice

We are a large staffing agency, providing nurses for INOVA Fairfax Hospital. Our staff is available to the hospital 24/7 and we have to be able to provide nurses at a moment’s notice. We are very fortunate to have found Computer Services Unlimited. They were able to stabilize our systems when they took over our network. They established a work from home policy for our company and trained our staff on how to log in remotely. If any of our staff has a problem, they call CSU directly and are taken care of immediately.

testimonial portrait Jim CFO


Maybe you’re concerned with the current rising costs and time-consuming support of your IT company and their business computer services. Or perhaps you are just running short on time because of your expanding business and need a helping hand. Whatever your reason, we can help you with quality computer IT services today.

With our business IT support services, you can save money and time today! Get help with managed IT services, network solutions, IT support, disaster recovery, and more by scheduling your FREE network audit and consultation.

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