Dog mascot giving a confident thumbs up

Committed to Customer Comfort since 1956

Northern Virginia’s Trusted HVAC & Generator Experts Since 1956

We treat your home like our own, with unmatched care, integrity and craftsmanship. As Northern Virginia’s most trusted HVAC and Generator partner, we deliver exceptional service through a dedicated team grounded in a legacy of trust, care, and long-standing commitment. Built on trust, driven by excellence and committed to comfort for generations to come

Request Service Now — It Only Takes 7 Seconds!

Trusted & Certified

Recognized by top industry leaders and award platforms.

Dog mascot giving a confident thumbs up

Testimonials

Real Reviews from Northern Virginia Homeowners

See what local families say about our service. We’re proud to earn their trust with every call.

Dog mascot giving a confident thumbs up

Product & Services

Complete HVAC, Generator & Home Comfort Services in Northern Virginia

From emergency repairs to new installations, Leonard Splaine has you covered. Explore our full range of services.

explore our services

Dog mascot giving a confident thumbs up

Service Areas

Proudly Serving Northern Virginia Homeowners Since 1956

Leonard Splaine has provided heating, cooling, and generator services to families across Northern Virginia for more than 65 years. Whether you’re in the suburbs, the city, or the countryside, our team is ready to keep your home safe and comfortable.

DC Metro map, Northern Virginia service area, geographical boundary, Arlington, Alexandria, Fairfax, Manassas, Woodbridge, Mount Vernon, Washington D.C., Virginia, NoVA.

Not sure if we service your area?

Call Us Today

(571) 989-1825

Our Coverage Area

Dog mascot giving a confident thumbs up

Service Areas

Proudly Serving Northern Virginia Homeowners Since 1956

Leonard Splaine has provided heating, cooling, and generator services to families across Northern Virginia for more than 65 years. Whether you’re in the suburbs, the city, or the countryside, our team is ready to keep your home safe and comfortable.

Not sure if we service your area?

Call Us Today

(571) 989-1825

Leonard Splaine owner smiling with mascot dog at the office desk.
Dog mascot giving a confident thumbs up

About Us

Family-Owned & Trusted in Northern Virginia Since 1956

Leonard Splaine owner smiling with mascot dog at the office desk.

For over six decades, Leonard Splaine has helped families across Northern Virginia stay safe and comfortable. As a third-generation family business, we combine technical expertise with neighborly service treating your home like our own.

Learn More About Our Story

Dog mascot giving a confident thumbs up

Problem & Solution

From Hot Summers to Power Outages. We’ve Got You Covered!

Leonard Splaine bright yellow service truck for HVAC, electrical, and generator services in Northern Virginia

Home comfort problems can strike at the worst times. A broken AC during a heat wave, a furnace that won’t start on a freezing night, or losing power when you need it most. At Leonard Splaine, we understand the stress and urgency these problems create and we’ve built our services to solve them quickly and reliably.

Leonard Splaine bright yellow service truck for HVAC, electrical, and generator services in Northern Virginia

Common Problems

AC Stops Working in Summer Heat

Uncomfortable rooms, sleepless nights, rising energy bills.

Furnace Breaks in Winter Cold

Dangerous low temps, frozen pipes, emergency stress.

Power Outages Without Backup

Food spoilage, lost work time, unsafe living conditions.

Poor Indoor Air Quality

Allergies, dust, mold, and unhealthy air circulating through your home.

Our Solutions

Reliable AC Repairs & Installations

Fast response times and expert service to restore your comfort.

Heating Service You Can Count On

Emergency furnace repairs and energy-efficient replacements.

Whole-Home Generators

Keep your lights, fridge, and HVAC running — no matter the storm.

Indoor Air Quality Solutions

Filters, purifiers, and humidity control for a healthier home environment.

Don’t wait until small issues become big problems.

Dog mascot giving a confident thumbs up

Why Choose Us

Making a Difference

Local & Family-Owned

Serving Northern Virginia homes since 1956.

Friendly dog mascot wearing overalls gives thumbs-up for home services.
Friendly dog mascot wearing overalls gives thumbs-up for home services.

Expert Technicians

Knowledgeable, certified, and respectful professionals.

Honest Service

Clear explanations, no upselling, only what you need.

Fast & Reliable

On-time arrivals, emergency service, dependable results

Home Comfort First

We prioritize your family’s safety and comfort.

Dog mascot giving a confident thumbs up

Our Process

How We Make Service Stress-Free

01

Power Outages Without Backup

Food spoilage, lost work time, unsafe living conditions.

02

Stay Informed

Receive updates & technician info before arrival.

03

Upfront Estimate

Get a clear, upfront estimate.

04

Professional Service

Professional service or installation.

05

Guaranteed Comfort

Enjoy lasting comfort backed by our guarantee.

Dog mascot giving a confident thumbs up

Special Offers

Affordable Comfort Solutions

From seasonal promotions to flexible financing, we make it easier to invest in your home’s comfort.

Call Us Today

(571) 989-1825

Dog mascot giving a confident thumbs up

Special Offers

Expert Tips for Home Comfort

View All Blog Articles