KD Mechanical
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KD Mechanical
With over 50 combined years of experience, KD Mechanical manages all your climate challenges with an honest, affordable and quality approach. Providing both residential and commercial solutions, our family-owned business operates with your best interest in mind. We provide outstanding service to all of Fairfax and Loudoun Counties, VA.

I felt like they were extremely knowledgeable and fair; would definitely recommend them and use them again! Regular maintenance and repair of all makes and models, including all Carrier, Trane, Amana, Lennox, York and Rheem products. At KD Mechanical, it's all about building lasting relationships with our customers and that's the reason our customers keep coming back.
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KD Mechanical is a family-owned and operated company serving the greater Washington, D.C. metropolitan area including all of Fairfax and Loudoun Counties. With over 50 years of combined experience, we pride ourselves on providing expert service and the very best solutions for all our customers' heating, air conditioning and water heater needs.
Cutting energy cost will help up to put money towards other things we need the most. One of the simplest ways to cut energy cost is concentrating on the things we use the most. More than likely the most used appliance in any home is the heating and cooling system. Being able to find a comfortable thermostat reading can be hard to do.
Living in the Leesburg area, the weather is often unpredictable. And you can guarantee, at some point, you're going to need a reliable heating system to keep you comfortable. Through the accurate installation of leading-edge equipment, KD Mechanical makes sure you enjoy maximum comfort inside regardless of the weather conditions outside.
KD Mechanical offers a broad range of heating repair and maintenance services to meet your needs. We work on all makes and models, including all Carrier, Trane, Amana, Lennox, York and Rheem, and provide prompt, knowledgeable and affordable service to home and business owners.

With years of dedication, we continue to evolve with the industry, staying current with technological advancements and delivering innovative solutions to temperature control.Annual inspection of your heating system is a proactive service. It allows us to stay ahead of potential malfunctions, and lowers overall cost of ownership.
Heat pumps are an ideal solution to year-round temperature control. You get all the benefits of air conditioning, with the added ability to heat your home during colder weather. These systems allow you to quickly raise and lower temperatures and maintain perfect comfort no matter what the season. Heat pumps are a clean, safe and cost-saving investment that not only provide all year comfort, but also raise the value of your home.
Reviews (16)
Russell Kelz
Russell Kelz
Dec 05, 2021
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I have used several companies in Leesburg area over last 14 years, these folks are by far the best.
Jake O is delightful young man and very professional. I applaud his parents for raising such a fine young man.
Maggie O'Neill
Maggie O'Neill
Nov 29, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
We couldn’t be happier with KD Mechanical Heating and Air Conditioning. The company is fast to reply and has stellar overall communication, and Jake is honest and passionate about the work he does.
Services: HVAC maintenance, Heating maintenance
Brian Buchanan
Brian Buchanan
Nov 21, 2021
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Positive: Professionalism, Punctuality, Quality
Jake was very thorough, and clearly explained what he was looking for and what to watch for.
Service: HVAC maintenance
Linda Jeffries
Linda Jeffries
Nov 13, 2021
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This company is friendly, professional, trustworthy, and HONEST. A rare combination in today’s culture. I highly recommend them even though this review probably means I’ll have to wait longer for my next appointment because they’ll be so popular.
Services: Repair heating system, Heating maintenance
Steven Cohen
Steven Cohen
Oct 28, 2021
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Roger did a thorough inspection (and cleaning) of our furnace unit and went over the punch list with me at the end. He adjusted a damper to eliminate a chirping noise that had developed over the last year. He also made sure that out steam humidifier was working properly. He did not rush and made sure to do the job right.
Services: Repair ducts & vents, Heating maintenance
Cabot Davis
Cabot Davis
Oct 28, 2021
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This is an amazing company. They were here 1 minute before the time scheduled. They worked quietly, hard and professional the whole time. They worked hard and solid. I was amazed at how organized the crew was. Before they arrived when setting things up and getting quotes they were simply one of the nicest companies to work for. Never minding to answer any and all questions I had. I would 100 percent recommend them to anyone needing Heat or AC work.
Michael Goldenberg
Michael Goldenberg
Oct 25, 2021
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Positive: Professionalism
Did a very professional job checking the furnace and providing good advice on setting the dampers.
Service: Heating maintenance
Chuck Whitacre
Chuck Whitacre
Oct 20, 2021
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Positive: Professionalism
Tech (Jake)was great. Explained everything to the detail that was good for me. Only reason for the 4 star was I thought a bit pricey at >$300 for a seasonal check and one sensor replacement - but if it keeps my 19 year system chugging for another 5, it will be worth it.
Service: HVAC maintenance
Jacqueline Keenan
Jacqueline Keenan
Oct 19, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
The service person was competent and did a thorough exam. He explained everything and answered my questions.
Services: HVAC maintenance, Cleaning
Cynthia Patience
Cynthia Patience
Sep 04, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
I've had KD out two times, and my experiences with both technicians were positive. I'm happy to have found a new home after my former guy retired!
Services: HVAC maintenance, Install thermostat
A. W.
A. W.
Jul 01, 2020
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Completely satisfied with the work KD Mechanical did! They had our old water heater out and the new one in without any hiccups. Good team of people. Will certainly look to them in the future for our furnace and air conditioning needs.
Ashley P.
Ashley P.
Jun 05, 2020
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KD Mechanical was amazing!! My AC stopped working on perhaps the hottest day of the year. They were able to get someone out quickly, determine the issue and swap out the bad capacitor. The technicians were friendly, knowledgeable and had my unit back up and running in less than half an hour. Thank you so much for such excellent service. I highly recommend KD Mechanical for HVAC services and repair.
Mark E.
Mark E.
Jun 02, 2020
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The KD Team was GREAT ! I ran into an issue with my AC and they jumped on it right away...customer service was the BEST I have seen with a HVAC ! The Owner actually called me to make sure I was happy with a few hours after the team left. Gave his cell and told me to call him anytime !

Great Job ! Highly Recommend
Jen B.
Jen B.
Apr 24, 2020
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Our HVAC guy would not call us back so we googled and the first company wanted 95.00 just to out. Second was KD. What a relief- nice family run business that showed up and hooked us up! Left without charging us as well. Worked out a replacement part price over the phone. The two installers explained my entire unit and serviced it as well. I'm telling my neighbors because AC techs are hard to come by and not get ripped off. Lucky to have found you!
Tricia C.
Tricia C.
May 03, 2018
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Excellent Service from KD Mechanical. Roger was thorough and explained every step of what needed to be done. Kelly provided excellent customer service by helping me with the process and working with my warranty company. They were compassionate and understanding. The price was also very reasonable. I would highly recommend KD Mechanical. I would also recommend their annual service plan, very affordable!
Mary H.
Mary H.
Dec 10, 2016
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This is a family owned company that prides itself on customer satisfaction. Our humidifier was not working and we were desperate to get in working order so we could bring a fresh Christmas tree into the house safely for the month of December. We were ready to replace it, but thankfully it was an easy fix with just new tubing. No job too small. Thank you for such a quick response and fix! You saved Christmas! I highly recommend KD Mechanical for any size job.