Looking for a whole-home generator in Northern Virginia? Leonard Splaine installs, repairs, and maintains standby generators that keep your heat, lights, and fridge running when the power goes out.
Why us?
Serving Northern Virginia
When a summer storm or winter ice takes out the power, a whole-home standby generator kicks on automatically within seconds, keeping your heat or AC, refrigerator, sump pump, and other essential appliances running until the grid comes back. We install, wire, and permit standby generators from the top brands, including Generac and Kohler, across Northern Virginia, size them to your home, coordinate any Dominion Energy and gas requirements, and set up the automatic transfer switch. A properly installed backup generator also adds resale value to your home, and we keep it serviced so it actually starts when you need it.
A standby generator only earns its keep if it actually starts, so the service relationship matters more than the nameplate. We repair and maintain every major generator brand, keeping oil changes, battery checks, and test runs on schedule, with the accountability of a third-generation family business. Maintenance plan members get priority scheduling and 15% off repairs on top.
Fault code on the controller, or a unit that skipped its weekly exercise? We answer every call live, whatever time it is, and a generator tech can often come out the same day.
Generac Sales Event
A $1,035 value, covered by Generac
August 17 – September 27, 2026
Buy a qualifying Generac home standby generator during the sale and Generac covers a 10-year extended warranty, up from the standard 5. Qualifying units are the air-cooled 10 kW to 28 kW models, which covers most Northern Virginia homes. We handle the install, the permit, and the online redemption paperwork.
Qualifying air-cooled 10 kW–28 kW models only. Installation and online redemption must be submitted by January 1, 2027. Terms and conditions apply.
Our Services
Standby generator installation, transfer switches, repair, and maintenance across Northern Virginia.
A permanently installed standby generator sits outside like an AC unit and runs on natural gas or propane, so there's no fuel to haul or wire to run. When the power drops, it starts on its own and powers your whole home, not just an extension cord's worth.
We install standby generators end to end: the pad, the unit, the gas line, the electrical tie-in, and the transfer switch, all permitted and inspected. We size it to what you actually want to keep running, from the essentials to the whole house.
The automatic transfer switch is the brain of a standby system. It senses when the grid drops, safely disconnects from the utility, and switches your home to generator power in seconds, then switches back when the power returns, all without you lifting a finger.
A generator that won't start during an outage is worse than none at all. We diagnose and repair every brand: no-start faults, bad batteries, controller and sensor issues, and engine problems, so yours actually runs when the lights go out.
Storms, ice, and grid failures take out power across Northern Virginia every year. A standby generator keeps your heat or AC, refrigerator, sump pump, medical equipment, and internet running, so an outage is a non-event instead of an emergency.
A generator only helps if it starts, and one that sits for months can fail when you need it. Our maintenance plan covers oil and filter changes, battery checks, and test runs, so your generator is ready for the next outage. Ask us for the details.
Brands
We're a Generac PowerPro dealer, and we install, repair, and maintain every major standby-generator brand, including Generac, Kohler, Cummins, and Briggs & Stratton.
Current offers
Trust comes first, but fair deals don't hurt. Every offer below is available to every Northern Virginia customer, every day.
Special Offer
With a New Home Standby Generator
Generac is covering a free 10-year extended warranty, a $1,035 value, on qualifying air-cooled 10 kW to 28 kW home standby generators bought August 17 – September 27, 2026. Installation and online redemption must be submitted by January 1, 2027. Qualifying models only; ask us for the list.
Expires: 09/27/2026
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
The difference
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Reviews
Real reviews from real Leonard Splaine generators jobs across Northern Virginia. 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 generators 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, we bring generators to Prince William, Fairfax, Arlington, Alexandria, Stafford, and the towns in between every day.
Don't see your town? If you're in Northern Virginia, call us. Odds are we've got a truck nearby.
Book now
Same-day appointments available. We'll call you right back.
Good questions
The questions Northern Virginia homeowners ask us most about generators. Anything else, the phone's faster than the internet.
It sits outside and connects to your natural gas or propane and your electrical panel through an automatic transfer switch. When the power fails, it starts on its own, powers your home, and shuts off when the grid returns, all automatically.
It depends on what you want to run: a few essentials, or the whole house including HVAC. We do a load assessment and size the generator so it comfortably covers what matters to you without overpaying for capacity you won't use.
Most run on natural gas or propane, so there is no fuel to store or refill. If you have a gas line, we can usually tap it; if not, we set it up on a propane tank.
Yes, and it matters. A generator that sits unused for months can fail to start in an outage. Regular oil changes, battery checks, and test runs keep it ready, which is exactly what our maintenance plan covers.
Yes. Generator installs are permitted and inspected, and we coordinate the gas hookup and electrical tie-in as part of the job, so it is done safely and to code.
Same-day service across Northern Virginia. Talk to a real person, day or night.
