Leonard Splaine CO. Your Northern Virginia Heating & Air Company!

Sonny the HVAC dog from Leonard Splaine Heating and Cooling

Friendly, honest, and reliable service Commited to Our Customers' Comfort

The latest HVAC repair and installation expertise, and the highest quality products at the fairest price for over 67 years.

HVAC heating and cooling systems icon

Heating & Cooling
Systems

Heating & Cooling System Solutions

Air Quality Icon

Indoor Air Quality

Humidifiers, Dehumidifiers
& Air Purifiers

Home Comfort Icon

Home Comfort

Insulation, Hot Water Heaters,
Duct & Vent Cleaning

HVAC service

Service & Maintenance

Service, Maintenance &
Annual Service Agreements

Sonny the HVAC dog driving the Leonard Splaine van

HEATING OR COOLING REPAIRS OR NEW SYSTEM ESTIMATES

SCHEDULE ONLINE 24 HOURS A DAY, 7 DAYS A WEEK!

Serving Northern Virginia Since 1956 We GUARANTEE Your 100% Satisfaction

We're a local, family-owned business serving Prince William County and Northern Virginia for over 65 years.

Dedicated to helping you with all your air conditioning and heating needs, our qualified, caring team and quality products are what sets us apart from everyone else.

Our accredited and experienced technicians understand the complexities of residential and commercial HVAC systems and are ready to help you understand your options to make an informed decision.

We are the expert solution to all your HVAC needs. We solve problems and deliver solutions like no other HVAC company!

Mitsubishi Elite Diamond Contractor Mitsubishi Elite Diamond Contractor: The Most Reliable Name in HVAC

What Does Mitsubishi Elite Diamond Contractor Mean?

An Elite Diamond Contractor designation signifies exceptional technical expertise and outstanding customer service. Our team undergoes specialized training certified by Mitsubishi. Technicians also receive hands-on training directly through Mitsubishi's certified programs.

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Sonny gives the thumbs up on Leonard Splaine's 100% Satisfaction Guarantee

We Are the Expert Solution to All Your HVAC & Home Comfort Needs

Take it from our customers: we solve problems and deliver solutions like no other HVAC company can.  Contact us today!