Premium quality

We solve HVAC & plumbing puzzles for you

Otech LLC was founded with a simple belief: every homeowner deserves honest, skilled plumbing and HVAC service at a fair price. Since 2009, we've served thousands of families and businesses across Northern Virginia — always showing up on time, always explaining the work, and always standing behind what we do. We're based in Chantilly, VA and proud to be your neighbors.

Mon–Sat: 8 AM – 8 PM | Emergency: 24/7

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Our awards

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Rumex Home Improvement, LLC
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Great job installing our water heater and completing the plumbing work. Professional, reliable, and highly recommended!
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shrewst
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Thanks to Jeff and his crew for a fantastic job replacing the hvac and matching carrier unit at our condominium! He provided many good advice on how to make sure the new unit is protected properly from potential condensation line overflow . Couldn’t be happier!
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PJ with Metro
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Fantastic service and high-quality work throughout the entire process. The team kept me informed during every stage of the HVAC Replacement 5 star service
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Jovan Giaimuccio
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Very responsive and trustworthy! Thank you for helping us with the AC and our plumbing issues! Thank you to Jafar …its like soup air out there right now and feels great in here!
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Maria Soledad Bergada profile picture
Maria Soledad Bergada
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Otech is the best! I’ve been using this company for more than 10 years at both of my properties. At one of them, they even replaced my water heater. They are always professional, reliable, and provide excellent service. I highly recommend Otech!
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Kaya Ikuma profile picture
Kaya Ikuma
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Jafar and his team at Otech Plumbing are among the best plumbers in the industry. Responsive, professional, quick to diagnose and to address issues. He has been my go to for any plumbing issues for the past 12 years.
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Miguel Rodriguez profile picture
Miguel Rodriguez
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We have been using OTECH Plumbing & HVAC for many years and have always been satisfied with their work. Most recently, we needed help with a clogged toilet at my parents’ place, and they were able to schedule the repair promptly. Communication was clear, the technician arrived in the expected window, completed the repair, tested everything, and made sure there were no leaks. The price was reasonable, and the whole process was straightforward. OTECH has consistently been responsive, professional, and easy to work with. I would definitely use them again.
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Kevin Tulop profile picture
Kevin Tulop
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Used them to replace my water heater and add an expansion tank. Pricing was fair. Came in lower than another quote I got. Crew was friendly and got the job done. Had one issue after the install where I'd randomly hear a knocking sound when the water turned on. Turns out the expansion tank had been mounted a little too close to the floor above and was making contact. They came back, repositioned it, and that was that Response times could be a little faster but nothing that'd stop me from calling them again. Would recommend.
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Aziz Abdelkefi
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Amazing workmanship, service and customer service.
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Sam profile picture
Sam
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When my water heater died, I contacted Jeff at OTech for help. I’d used OTech before and had no issues, so called them again. I’d been wanting to shift to a more efficient water heater and Jeff helped me research various options, sending me links to units, with his recommendations based on hot water output, ease of maintenance, cost to operate, and installation costs. I went with a tankless system with a circulating pump to speed hot water to the faucets. Jeff’s crew was prompt, friendly, efficient, knowledgeable, and kept their work area clean. At the same time, my garbage disposal went out and Jeff’s crew came back to install a new one, waiving the service call and labor costs and only charging for the disposal unit itself. I’ve been happy with the results and can recommend OTech without reservation.
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Premium quality

Our Values

Honesty

We tell you what you need, not what makes us the most money.

Quality

We use quality parts and never cut corners.

Affordability

Competitive, upfront pricing with no hidden fees.

Reliability

We show up when we say we will, every time.
Various services

Work examples

From a leaking faucet to a full HVAC installation, Otech LLC provides complete plumbing and HVAC services for homes and businesses across Northern Virginia. Our licensed technicians bring the right tools and the right expertise to every job — with upfront pricing and a 100% satisfaction guarantee.

Meet Our Team

Jafar Kaveh

Owner / Lead Technician

Jafar is a hard-working businessman who puts his customers first. Always looking to save his customers’ money, he does a complete evaluation at no additional charge.