Looking for an HVAC company in Gainesville? Gainesville's big 2000s-era homes work their HVAC hard, two systems, three floors, bonus rooms over garages. Leonard Splaine keeps them all running, with same-day service out Route 29 and Linton Hall Road.
Why us?
Serving Gainesville
Gainesville grew up fast in the 2000s, and its housing stock shows it: large colonials in Virginia Oaks and Lake Manassas, active-adult homes in Heritage Hunt, and townhome rows around Somerset Crossing and the Route 29 corridor. Most of these homes run dual systems, one per floor, and those systems are now hitting the 15-to-20-year window where original equipment starts failing in waves.
Big newer homes fail differently than old ones. It's rarely the whole system, it's the upstairs zone that can't keep up, the bonus room over the garage that swings twenty degrees, the humidifier that quit years ago, or one of the two ACs quietly dying while the other carries the load. We diagnose per-zone instead of guessing, and we right-size replacements for how the house actually gets used.
Gainesville is part of our Prince William home turf, and it gets treated that way: same-day service as the standard, not the upsell, and a real person answering the phone whenever you call. Seventy years of family ownership means the name on your invoice is the same one that was on it in 1956.
Our Services
Dual-zone AC and heating, heat pumps, ductless, and tune-ups for the Linton Hall and Route 29 corridors.
When one of your two systems quits in a Gainesville colonial, summer gets miserable fast, especially upstairs. We run same-day AC repair across Heritage Hunt, Virginia Oaks, and the Linton Hall corridor, and we're used to the 2000s-era equipment here: failed capacitors and condenser fan motors, TXV problems, and coils leaking at the 15-year mark.
Most Gainesville homes pair gas furnaces with AC or run dual heat pumps, and when a zone goes cold we fix it the same day. Failed igniters, inducer motors, control boards, and thermostats that lost the plot, we sort the real cause, and in Heritage Hunt we're happy to coordinate around community schedules and gate access.
Original builder systems across Gainesville's 2000s subdivisions are aging out on schedule, and often the smart move is replacing the dying unit with equipment matched to its zone instead of cloning the builder's spec. Real load calculations on every quote, and as a Lennox Premier Dealer we'll happily price both systems if the second one is close behind.
The bonus room over the garage is Gainesville's signature comfort complaint, too hot in July, too cold in January, no matter what the rest of the house does. A single-zone ductless head solves it permanently. As a Mitsubishi Diamond Contractor we also fit finished basements, home offices, and garage gyms across Virginia Oaks and Lake Manassas.
Plenty of Gainesville homes, Heritage Hunt especially, run heat pumps, and the original units are reaching replacement age. We repair every brand and install high-efficiency inverter systems that hold comfort more evenly and cut electric bills, with dual-fuel setups for homeowners who want gas-furnace backup.
Two systems mean twice the parts that can fail, and Gainesville's manufacturer warranties require documented maintenance to stay valid. Our tune-ups cover both zones, coils, refrigerant, capacitors, drains, filters, and our maintenance plan handles the scheduling so a working couple or a Heritage Hunt retiree never has to think about it.
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 Gainesville 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 Gainesville 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 Gainesville 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, Gainesville is part of Prince William County, 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, and we recommend it. Most Gainesville homes run one system per floor, and we tune up or diagnose both in a single appointment, which is cheaper and keeps both warranties documented.
Regularly. We're used to the gate, the community's schedules, and the original builder equipment now reaching replacement age, and many of our Heritage Hunt customers are on our maintenance plan so they never have to think about it.
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.
