Looking for an HVAC company in Old Town Alexandria? Old Town's rowhouses have survived two centuries; the wrong contractor can undo that in an afternoon. We cool and heat these homes with equipment that fits their bones, and we've been at it since 1956.
Why us?
Serving Old Town Alexandria
Old Town Alexandria is one of the hardest places in Virginia to do HVAC well, and one of the most rewarding. Federal and Georgian rowhouses from the 1700s and 1800s, brick party walls, plaster and horsehair, heart-pine floors nobody wants drilled, and mechanical spaces that were designed for a coal bin, not a modern air handler.
The answers here are specialized: high-velocity mini-duct systems that snake through old framing where full-size ductwork will never fit, ductless heads placed where they respect the moldings, compact equipment tucked into closets and knee walls, and boilers, plenty of them still running, kept alive by techs who know cast iron. Preservation matters on these blocks, and the BAR has opinions about what shows from the street; we design around both.
We've serviced Old Town since 1956, long enough to have worked on some of these houses under three different owners, and the same crews cover the blocks just beyond the historic district, in Rosemont, Potomac Yard, and the West End. A real person answers day or night, and one number covers the rowhouse, the carriage house, and the condo conversion above the King Street shop.
Our Services
High-velocity retrofits, ductless, boiler care, and discreet outdoor equipment for the historic blocks.
Old Town cooling is high-velocity systems, mini-splits, and compact retrofits, and each fails its own way: attic handlers over plaster, condensate lines threading between floors, heads dripping over a parlor. We repair all of it same-day, with floor protection and respect for the house.
Plenty of Old Town still heats with boilers and radiators, some over a century old, alongside the gas furnaces in renovated homes. We're one of the last companies that services steam and hot-water systems properly, and no-heat calls in an 1810 rowhouse get same-day response.
Cooling an Old Town rowhouse without wrecking it is our specialty: high-velocity mini-duct where framing is tight, ductless where walls must stay closed, compact ducted where a closet run allows. We walk the house, quote honest options with a real load calculation, and offer free estimates and 0% financing options.
Ductless was made for these blocks. As a Mitsubishi Diamond Contractor we place low-profile heads that defer to the moldings and mantels, run linesets where they don't scar the brick, and site condensers in courtyards and alleys where the BAR and the neighbors stay happy.
Heat pumps let Old Town homes electrify without new gas lines or flues: cold-climate inverter systems, often paired with existing radiators in hybrid setups. We size for 200-year-old brick's real heat loss, not a spreadsheet's guess, and zoning floor by floor keeps the third story from running ten degrees warmer than the parlor.
Historic-house systems punish neglect: boilers need an annual safety inspection, high-velocity handlers hide in attics that bake, condensate runs cross irreplaceable ceilings, and old brick holds humidity that feeds pollutants into the indoor air. Our tune-ups keep it all honest and the energy efficiency where it should be, with priority scheduling and waived diagnostics for 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 Old Town 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 Old Town 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 Old Town 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, Old Town 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 what we're known for here. High-velocity mini-duct systems and ductless mini-splits both cool historic rowhouses without opening walls. We walk the house and recommend whichever fits its framing, and it's often a combination.
We design around them. Condensers go in courtyards, side alleys, and rooflines out of street view, and we keep sound ratings low for the close quarters. You handle any approvals; we make the layout easy to approve.
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.
