When it comes to heating and cooling, we are your most trusted resource. Leonard-Splaine Heating, Air Conditioning, and Fuel Oil is a full service residential and commercial HVAC contractor serving the greater Northern Virginia Area for over 65 years. We specialize in the installation, service, and repair of heat pumps, air conditioners, gas furnaces, electric furnaces, instant water heaters, gas water heaters, electric water heaters, air filtration systems, duct work, humidifiers, and much more. We also sell and deliver heating fuel oil and off-road diesel
⭐⭐⭐⭐⭐ Leonard Splaine — Professionalism, Thorough Diagnosis & Results
“Good morning, how can we make your day better?”
That was how my first conversation with Leonard Splaine began. My response was, “I really do need my day to be better.” After several frustrating days dealing with an HVAC problem, I meant it.
From that first conversation through the service visit, the experience was professional and refreshingly straightforward. Technician Logen Phannavong took the time to diagnose my existing system rather than immediately recommending replacement. He listened to the history of the problem, explained what he was finding, answered my questions, and approached the system methodically.
During his inspection, Logen identified an additional wiring issue associated with the condenser fan motor that was affecting proper system operation. He corrected the wiring as part of his inspection without adding another charge. He also explained the condition and expected service life of the major components and did not try to sell me a replacement system that he did not believe I needed.
What impressed me most was the attention to detail. I never felt rushed or pressured. Logen seemed genuinely interested in determining why the system was behaving the way it was rather than simply treating the symptom.
Before leaving, he asked whether he could place a Leonard Splaine sticker on the outdoor unit. I told him absolutely — take ownership. I appreciated that confidence.
We intentionally waited before writing this review so we could evaluate the system after the service rather than judge the experience immediately. Since Logen’s visit, the HVAC system has maintained the thermostat setting, cycled normally in response to the thermostat, and operated noticeably more smoothly. I also inspected the outdoor unit afterward, and the icing/frost condition that had been part of the original problem has not returned.
Mistakes and mechanical problems happen. What matters to me is how a company responds: listen to the customer, investigate carefully, explain what you find, and take ownership of the work.
That was my experience with Leonard Splaine and Logen.
Excellent customer service, professional communication, thorough troubleshooting, and—most importantly—results.
Highly recommended. ⭐⭐⭐⭐⭐
GJ
Gina Jackson
Sep 24, 2026
5.0
I now have AC again!
Logen arrived within the scheduled time, introduced himself and shared the plan for the visit which included an illustration of the process and expected cost. Very professional and polite. He assured me he would be able to access my condos roof top compressor(an issue with 2 previous contractors). He also labeled my compressor (one of many on the roof) to avoid any potential future difficulty finding it.
Overall an excellent experience and because of that, I did follow through with purchasing a maintenance package with Leonard Splaine for my aged HVAC system.
AD
Alphonse Dembele
Sep 21, 2026
4.0
Technician arrived 3 hours earlier than the 4 hours window I was given.
He diagnosed my hvac system with clogged drain pipe that required just 10 minutes to unclogged. Price breakdown. $95 service call, $95 diagnostics, $110 unclogging of drain pipe.
EK
Erik Kirkpatrick
Sep 17, 2026
5.0
I couldn’t be happier with the HVAC system installation! From start to finish, the entire experience was excellent. Dominic Garner, Jacob Dunger, and John Howard were all extremely respectful, professional, and courteous throughout the entire installation.
They did a fantastic job installing the new system, took the time to make sure everything was done properly, and cleaned up after themselves when the work was finished. It’s clear that they take pride in their work and care about providing a great experience for the customer.
I really appreciate the hard work and professionalism from all three of them. I would definitely recommend Leonard Splaine to anyone looking for quality work and a great team!
Special shoutout to Brad Hoskins who helped diagnose my issue initially, he is always spot on!
JC
Jameela Conway-Turner
Sep 17, 2026
5.0
I had a great experience with Leonard Splaine. They sent their technician Kade and he came just a couple hours after I called. He was professional and explained everything to me. He checked the whole HVAC system and explained a potential problem. He was realistic and also gave me a quote about additional work without pressuring to complete the work. Was very happy with the service and will call them again for any additional work.
Frequently Asked Questions About Leonard Splaine Co
What services does Leonard Splaine Co offer?
Leonard Splaine Co specializes in HVAC installation, service, and repair including heat pumps, air conditioners, gas & electric furnaces, water heaters, air filtration systems, duct work, humidifiers, and also provides home heating oil and off-road diesel delivery.
Where is Leonard Splaine Co located?
Leonard Splaine Co is located at 13300 Occoquan Road, Woodbridge, VA 22191, United States.
What are the operating hours of Leonard Splaine Co?
Leonard Splaine Co operates 24 hours a day, 7 days a week, providing round-the-clock service.
Which brands does Leonard Splaine Co work with?
Leonard Splaine Co works with top brands including Lennox, Mitsubishi, Honeywell, Navien, AprilAire, Bosch, Bradford White, and Trane.
Is Leonard Splaine Co certified or associated with any professional organizations?
Yes, Leonard Splaine Co is associated with ACCA and is NATE-certified, ensuring professional industry standards.
What areas does Leonard Splaine Co serve?
Leonard Splaine Co serves the greater Northern Virginia area including Fairfax Station, Fredericksburg, Lorton, Manassas, and Northern VA.
How can I schedule a service call with Leonard Splaine Co?
You can schedule a service call by visiting their contact page at https://www.leonardsplaine.com/contact/ or contacting them via their phone number +1 703-494-2855.
What nearby services can I access when visiting Leonard Splaine Co in Woodbridge, VA?
Nearby Leonard Splaine Co, you'll find various amenities including Solution Home Care Inc (retirement home), Lake-Wood Auto Service Inc. (automotive repair), and 7-Eleven (convenience store and coffee shop) for your convenience.
Are there dining options near Leonard Splaine Co?
Yes, near Leonard Splaine Co, you can enjoy dining at Pizza Palace for pizza, Antojitos Valencia #1 for Mexican cuisine, or Xela Super Deli and Kabob for Latin American dishes.
What nearby places can help customers relax or socialize after visiting Leonard Splaine Co?
Customers can visit The Woodbridge Inn, a bar and restaurant nearby, or check out local hair and beauty salons such as De' Unique Braids and Beauty for personal care and relaxation.
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