Looking for an HVAC company in Dale City? Dale City's split-levels and ramblers have kept us busy since the Hylton era: same-day AC repair, heating, and everything else your home runs on, from the company ten minutes away on Occoquan Road.
Why us?
Serving Dale City
Dale City was famously built out section by section, Ashdale, Birchdale, Cloverdale, Darbydale, and the rest of the alphabet, mostly split-levels and ramblers from the 60s and 70s. That consistent housing stock means consistent HVAC patterns: original ductwork runs that starve the upstairs bedrooms, heat pumps and furnaces several generations in, and additions that never got proper conditioning. We've worked these sections for decades.
Split-levels are their own HVAC animal. The half-floors fight each other, the upstairs bakes in July while the lower level stays cave-cold, and a single thermostat in the hallway can't referee it. We fix that with right-sized replacements, airflow corrections, zoning, and ductless heads in the rooms that never got comfortable.
We're ten minutes away, family-owned since 1956, and a real person answers day or night. One call covers cooling, heating, water heaters, electrical, and generators, from certified employees, with straight prices and an $89 diagnostic that's waived for maintenance members.
Our Services
AC repair, heating, heat pumps, and ductless, tuned to the split-levels and ramblers the -dale sections are built on.
When a Dale City AC dies in July, we're ten minutes out. The 60s and 70s split-levels along Dale Boulevard fail in predictable ways: compressors at end-of-life, refrigerant leaks in original line sets, and airflow problems that masquerade as cooling failures. We diagnose the real cause, quote flat-rate, and fix most of it the same visit.
Dale City heats mostly with gas furnaces and heat pumps, many of them replacements-of-replacements at this point. We repair every brand the same day: no heat, short-cycling, failed igniters and blowers, and the cracked heat exchangers that show up in furnaces past their 15th winter. If it's time to talk replacement, you get honest math, not a scare pitch.
The classic Dale City problem: the original AC was sized for the house as built in 1970, not for the finished rec room and enclosed carport it has now. We install and replace central systems with a real load calculation, fix the duct runs that starve the top floor, and can usually have the new system running next-day, with the estimate free and in writing.
Every Dale City split-level has that one floor that never matches the thermostat. A ductless mini-split head upstairs, or in the basement rec room, ends the fight without redoing the ductwork. As a Mitsubishi Diamond Contractor we install single- and multi-zone systems all over the -dale sections, and in the carport-conversion rooms that never had ducts at all.
Dale City has been heat-pump country for decades, and we've replaced units here that we also installed twenty years earlier. We repair every brand and install high-efficiency replacements that make a visible difference on a split-level's electric bill, with dual-fuel options for homeowners who want gas backup on the coldest nights.
A tune-up matters more when your system is fighting a split-level's airflow all summer. We clean coils, check refrigerant and capacitors, clear condensate lines, and check the duct-side issues that make Dale City systems work harder than they should. Maintenance plan members get priority scheduling and waived diagnostics.
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 Dale City 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 Dale City 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 Dale City 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, Dale City 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 it's the most common call we get from Dale City. Depending on the house, the fix is airflow and duct corrections, a zoned system, or a ductless head in the problem floor. We diagnose which one your home needs instead of guessing.
All of them, Ashdale to Yorkdale. Our shop is ten minutes away on Occoquan Road and our trucks work Dale Boulevard daily.
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.
