About Us
Serving Northern Virginia families with comfort, reliability, and integrity for nearly 70 years.
Our Mission
From the very beginning our mission has been the same:
“To keep a small family business atmosphere while providing our customers with the comfort and dependability they expect.”
This means we offer world-class HVAC expertise while never compromising our small business, customer-first approach.
Our Promise
We're so confident you'll find us to be a company you can rely on for all your heating and air conditioning needs that we guarantee your complete satisfaction! Contact us today and experience the difference for yourself.
Our Journey
Founded by James Leonard & Charlie Splaine in Woodbridge, VA (originally a gas station delivering heating oil).
Expanded into oil furnace installation & service.
Second generation (Gary & Tom Leonard) built new HQ & warehouse.
Third generation began leading operations.
A trusted Northern Virginia HVAC & home comfort provider.
Founded by James Leonard & Charlie Splaine in Woodbridge, VA (originally a gas station delivering heating oil).
Expanded into oil furnace installation & service.
Second generation (Gary & Tom Leonard) built new HQ & warehouse.
Third generation began leading operations.
A trusted Northern Virginia HVAC & home comfort provider.
Our Impact
Leonard-Splaine sets itself apart through quality, integrity, and expert service. The company offers a full range of reliable HVAC products and services such as furnaces, heat pumps, air conditioners, water heaters, air filtration, and duct cleaning. Customers benefit from world-class solutions delivered by highly trained and certified technicians.
With decades of experience and a focus on customer needs, Leonard-Splaine continues to provide trusted comfort and dependable solutions to homeowners and businesses in Northern Virginia.
Our Loyalty
Every great team has a loyal companion, and for us, that’s Sonny, the HVAC Dog. More than just a mascot, Sonny embodies the values we bring to every job—reliability, loyalty, and genuine care. Whether he’s perched on an HVAC unit or tagging along at a job site, Sonny reminds us that comfort and trust go hand in hand. Just like Sonny, we’re always dependable, always by your side, and always here to keep your home comfortable.
Why Choose Leonard Splaine
Serving Northern Virginia homes since 1956.
Knowledgeable, certified, and respectful professionals.
Clear explanations, no upselling, only what you need.
On-time arrivals, emergency service, dependable results
We prioritize your family’s safety and comfort.
Get Started Today
Whether it’s HVAC, plumbing, electrical, or fuel delivery—Leonard Splaine is your trusted home comfort partner.