Looking for an HVAC company in Alexandria? From Old Town rowhouses with no room for ductwork to Del Ray bungalows and West End high-rises, Alexandria's housing demands more HVAC creativity than anywhere we serve, and we've been supplying it since 1956.
Why us?
Serving Alexandria
Alexandria runs the whole architectural gamut: 18th- and 19th-century rowhouses in Old Town, early-1900s bungalows in Del Ray and Rosemont, mid-century garden condos, and West End towers. The historic stock has no ductwork, party walls on both sides, and courtyards where a condenser has to be small, quiet, and sometimes approved before it's installed. That's a different trade than dropping a system into a suburban colonial, and it's one we know well.
The classic Alexandria jobs: pairing ductless heads with a rowhouse's original radiators, threading compact ducts through a Del Ray attic, replacing the boiler that's heated a Rosemont foursquare for half a century, and finding the leak in a rooftop condo unit. We also handle the modern side, the townhomes off Duke Street and the single-families toward the West End with conventional systems aging on schedule.
Alexandria has been on our service map for decades, and the same family still owns the company: no private equity, no franchise badge, no games. Whether the call is a rowhouse boiler, a Del Ray mini-split, or a West End heat pump, the pricing is upfront and the number is the same.
Our Services
Ductless retrofits, boilers, AC repair, and heat pumps, from Old Town to the West End.
Alexandria cooling problems come in period-appropriate flavors: mini-split heads dripping in Old Town, attic systems fighting Del Ray's summer heat load, and conventional units in the West End hitting end-of-life. We repair all of it same-day, with techs who know that in a rowhouse, the diagnosis often starts on the roof or in the courtyard.
A meaningful slice of Alexandria still heats with boilers and radiators, especially Old Town and Rosemont, and we're one of the last companies that services them properly, along with gas furnaces, heat pumps, and the oil systems a few older homes still run. Winter no-heat calls in historic homes get priority; old masonry loses warmth fast.
Cooling an Alexandria rowhouse or bungalow is a design exercise: ductless multi-zone, compact or high-velocity ducts, or a hybrid, sized with a real load calculation that accounts for brick mass and party walls. We quote the honest options, handle placement constraints, and back it with free estimates and 0% financing options.
Old Town and Del Ray are made for ductless: no ducts, plaster worth protecting, and rooms that need individual control. As a Mitsubishi Diamond Contractor we install low-profile heads and slim outdoor units that fit courtyards and alley setbacks, quiet enough for neighbors a wall away.
Heat pumps fit Alexandria's electrification wave and its housing: cold-climate ductless for the historic stock, conventional inverter systems for the West End. We repair every brand and install high-efficiency units, keeping boilers as backup where owners want the radiators to stay.
Alexandria equipment lives in tough spots, rooftops, crawl spaces, courtyards, and it collects city grime accordingly. Our tune-ups clean coils, check refrigerant and electrical, clear drains, and keep boilers safe, with priority scheduling and waived diagnostics for maintenance plan members.
Brands
We repair every major brand and install new systems from the best of them. We're a Lennox Premier Dealer and a Mitsubishi Electric Diamond Contractor.
Current offers
Trust comes first, but fair deals don't hurt. Every offer below is available to every Alexandria customer, every day.
Special Offer
On a New Carrier System
0% APR with 60 equal monthly payments on qualifying new Carrier systems, financed through Wells Fargo and subject to credit approval. Sale period August 1 – November 20, 2026. Mention this offer when you book and we'll run the numbers on your replacement.
Expires: 11/20/2026
Special Offer
On a New Lennox System
Rebate up to $1,300, paid as a Lennox Prepaid Mastercard®, on a qualifying Lennox home comfort system, or combine a rebate up to $1,100 with 0% financing for 60 months. Buy July 6 – August 14, 2026; install by August 21. Qualifying system required; see us for details.
Expires: 08/14/2026
Special Offer
Plus 3% Off When You Pay by Cash or Check
Valid ID required. Applies to service visits. Cannot be combined with other discounts or offers. Ask about our 3% discount when paying by cash or check.
Expires: 12/31/2026
Why us
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Reviews
Real reviews from real Leonard Splaine jobs across Alexandria and Northern Virginia, from same-day AC repairs to full system installs. We've earned our 4.9-star average the slow way: answering the phone, showing up on time, and doing right by every home.
Lynn Gilbertson Google review Kyle provided emergency holiday weekend service when our a/c was completely out with 104F "feels like" temperatures. He quickly diagnosed and fixed our system, with solutions for avoiding similar problems in the future. We are grateful to Kyle and Leonard Splaine!
Katie Kada Facebook recommendation Couldn't have asked for better service! Leonard Splaine was timely, honest and did a wonderful job replacing our very outdated AC unit. We plan to use them again for any service or replacement in the future and we'll recommend them to our friends and family.
I will definitely use this company again! Our AC went out on one of the hottest days of the year. They answered and came to the rescue! Family owned and very kind. Technician was knowledgeable and quick.
Ankur Mundra Facebook recommendation I've used Leonard Splaine the last 5 years. They are professional, provide quality service, and answer my questions and concerns. Michael Ford came out this year to do my spring maintenance as well as eztrap installation and condenser coil cleaning. He did an excellent job.
Candace Bond Google review They were such gentlemen and seemed to be very knowledgeable and honest. They were also very patient and took the time to answer all of our questions. I would highly recommend these guys.
A/C stopped working on the hottest day of the year, so far. They came over the same day and had it up and running in no time. The price was reasonable and the tech was great.
Our Team
Every Alexandria visit is handled by real, named people who treat your home like their own. We're family-owned, 70 years in, and three generations of the same family crew. When you call Leonard Splaine, you reach these folks. Learn more about us.
Ted Leonard 3rd-Generation Owner 
Gary Leonard 2nd-Generation Owner 
Johnny Baker General Manager 
Erin Simmons Office Manager 
Brian Boyce Service Manager 
Brad Hoskins Field Supervisor 
Ira Sacknowitz Install Manager 
Ricky Seminario Comfort Advisor Where we work
Headquartered on Occoquan Road in Woodbridge, Alexandria is part of City of Alexandria, and our techs cover the surrounding towns every day.
Don't see your town? If you're in Northern Virginia, call us. Odds are we've got a truck nearby.
Good questions
The things homeowners ask us most. Anything else, the phone's faster than the internet.
Yes, it's some of our most frequent Alexandria work. The usual answer is ductless multi-zone or a compact ducted system, with the outdoor unit sited for courtyards and setbacks. We handle the practical constraints, including keeping things quiet for close neighbors.
We do, and we're one of the last companies in the area that does it properly. Plenty of Old Town and Rosemont homes heat beautifully with systems older than our techs, and we keep them that way.
In most cases, yes. We run a large fleet out of Woodbridge and hold room in the schedule for same-day repair calls across Northern Virginia. Call before noon and we can almost always be there the same day. Earlier in the day is better during peak season.
For residential HVAC, our diagnostic fee is $89. It covers a real diagnosis and a straight, written price before any work starts. Maintenance members have the diagnostic fee waived when they proceed with the repair. Ask us about the membership. Replacement estimates for HVAC systems, water heaters, electrical panels, and EV chargers are always free.
Yes. We work with multiple financing partners and pass along manufacturer promotions as they run, including 0% and low-monthly-payment options on new systems. Tell us your budget and we'll build options around it.
All of them. Our technicians repair every major brand of furnace, heat pump, AC, boiler, and water heater. For new installations we're a Lennox Premier Dealer and a Mitsubishi Diamond Contractor, including ductless mini-splits, and we also specialize in Carrier.
We do. We're one of the last companies in Northern Virginia that both services oil heating systems and delivers home heating oil and off-road diesel. If you have an oil furnace or boiler, you only need one phone number.
Yes. Alongside heating and cooling we install air filtration, whole-home humidifiers, UV purification, and air purifiers, a big help during Northern Virginia's pollen seasons and dry winters. Ask about it during any air conditioner or furnace visit, or book an air quality assessment on its own.
Yes, and it matters. Leonard Splaine has been owned and run by the same family for three generations, since 1956. We haven't been bought by private equity, and we're not going to be. When you call us, you're dealing with people whose name is on the trucks.
Same-day service across Northern Virginia. Talk to a real person, day or night.
