AIR CONDITIONERS
Expert AC installation and maintenance to keep your Virginia home cool, comfortable, and energy-efficient.
Learn more → Professional HVAC service
Heating, cooling and water heater service you can rely on
Expert HVAC service and reliable comfort for your home.
Certified techniciansSkilled, professional service
Work you can trustCare in every detail
Responsive supportReady when you need us
Healthy comfortClean, comfortable air
Comfort solutions for your home
GAS & OIL FURNACES
Professional furnace installation and maintenance for reliable, efficient heating when your home needs it most.
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HEAT PUMPS
Expert heat pump installation and maintenance for efficient heating and cooling throughout every season.
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WATER HEATERS
Reliable water heater installation and maintenance to keep hot water flowing efficiently throughout your home.
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HUMIDIFIERS
Professional whole-home humidifier installation and maintenance for better comfort and balanced indoor humidity.
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DUCT WORK
Expert ductwork installation and maintenance designed to improve airflow, efficiency, and comfort throughout your home.
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ELECTRONIC AIR
Professional electronic air cleaner installation and maintenance to help reduce airborne particles and improve indoor air quality.
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DESIGN AND INSTALLATION
Custom HVAC system design and professional installation tailored to your property, comfort needs, and energy-efficiency goals.
Learn more →Installation
Is it time to replace your whole system?
We know how miserable and expensive a broken system can be during extreme temperatures. Don't wait until it's too late. We offer a variety of equipment brands to suit your needs.
Request an estimateEquipment optionsBrands and systems selected for your home.
Efficient comfortModern equipment built for dependable performance.
Professional installationCareful work from experienced HVAC technicians.
Keep your equipment performing at peak efficiency
Preventive maintenance prolongs the life of mechanical equipment. We recommend a yearly service visit to help ensure reliable operation and peak efficiency.
Heat pumps
Our annual inspection includes:
- Capacitor
- Refrigerant pressure
- Compressor amps
- Blower motor amps
- Evaporator coil
- Flush drain pipe
Gas furnaces
Our annual inspection includes:
- Blower motor amps
- Clean flame sensor
- Igniter test
- Carbon monoxide detector
- Heat exchanger
- Inducer motor
About us
Professional HVAC maintenance, repair, and installations
Operating in Northern Virginia and Maryland, our goal is to help our customers know they can depend on us.
Are you tired of feeling too hot in the summer or too cold in the winter? Don’t sweat it! At Marathon HVAC Services LLC, we’re your go-to HVAC experts for all your heating and cooling needs. With over 10 years of experience in the industry, we’ve built a reputation as a reliable and trusted HVAC company.
- Skilled and experienced technicians
- Modern tools and careful workmanship
- Clear, dependable communication
- Solutions tailored to your home
- Reliable service you can count on
- Comfort in every season
Energy efficiency
A well-maintained HVAC system helps support efficient comfort.
Longer system life
Professional care helps your equipment perform at its best.
Comfort in every season
Heating and cooling solutions tailored to your home.
Expert workmanship
Detailed service from knowledgeable HVAC professionals.
HeatingHome comfort solutions
CoolingComfort for warm days
Water HeaterService you can trust
Expert ServiceReliable comfort
Get service in three simple steps
Call us
Tell us what you need and how we can help.
Schedule a visit
We will coordinate a time that works for you.
Enjoy your comfort
Our team completes the job with care and attention.
Homeowners trust our service
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Professional, punctual and thorough. Our system is working perfectly again.
★★★★★
M
Michael R.Homeowner
“
Great service from start to finish. The technician explained everything clearly.
★★★★★
S
Samantha L.Homeowner
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Reliable team and excellent work. I would absolutely recommend them.
★★★★★
D
Daniel P.Homeowner