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Heating & Cooling in Sterling, VA

Bringing Comfort to Homes & Businesses in Fairfax & Loudoun Counties

Broken air conditioner or heater? Contact Cardinal Heating & Cooling right away! Our family owned and operated Sterling heating and air conditioning repair company responds promptly to all service calls. We know the inconvenience of having an ineffective heating or air conditioning system when you need it most. That’s why we are here to provide you with the timely and efficient services you deserve. Whether your comfort equipment is down to its last legs or just needs a little tune-up, our professional team can handle it. We are NATE-certified and licensed in the state of Virginia. We also offer flat-rate pricing, free estimates on system installations, and financing options through Wells Fargo. As your one-stop shop for all things HVAC, we always put your comfort and satisfaction as our top priorities.

Trane Certified Dealer

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Founded on Honesty, Reliability & Professionalism

Cardinal Heating & Cooling was established in 1991 by HVAC industry veteran, Nelson Workman. After 35 years of working for different HVAC companies, Nelson bravely pursued a lifelong passion of opening his own company together with his sons. Right from the start, Nelson has set very high standards for the company, emphasizing the core values of honesty, reliability, professionalism, and respectability. In a short amount of time, all of the family’s hard work and good intentions eventually cemented Cardinal Heating & Cooling’s reputation as the most trusted HVAC service company in Herndon, Ashburn, and all of Fairfax and Loudoun Counties. After Nelson’s passing, his son, Tod Workman, took over and is now personally overseeing that his father’s legacy continues with the high-quality services and products the company offers.

Cardinal Heating & Cooling remains committed to creating comfort for our customers, one at a time. Schedule an appointment with our HVAC service in Sterling, VA and experience the difference.

Why Cardinal Heating & Cooling?

  • Lifetime Relationship

    We focus on creating long-term relationships with our customers.

  • We Repair What's Damaged

    We only suggest a replacement when your system is beyond repair.

  • NATE Certified Technicians

    Our technicians are trained and tested to the highest standards.

  • Upfront Pricing

    Feel at ease with no surprises—we charge by the job, not by the hour.

Why Choose Cardinal Heating & Cooling? Learn More About Us
Keeping You Comfortable All Year Round Ask about our Cardinal Heating & Cooling Maintenance Plan and sign up to get the peace of mind you deserve. Learn More

HVAC Frequently Asked Questions

Answers From The Cardinal Heating & Cooling Team!

  • Is there a way for me to know if my AC or heater is about to break down?

    While heating and cooling system failures usually catch us by surprise, there are actually some telltale signs that you can look out for to determine if you need repairs.

    These signs include:

    • Loud, strange sounds when the system is operating
    • Burnt, musty, or other strange odors when the system is running
    • Poor airflow
    • Inability to heat or cool the space evenly
    • A sudden rise in energy bills

    Don’t wait until your heater or AC has stopped working altogether. Get in touch with a professional tech from Cardinal Heating & Cooling right away.

  • How do I choose a new AC or heater?
    Getting a new AC or heater is an exciting time. However, you’ll soon find out that you have a myriad of options, making the decision a bit harder for you. Whether you’re getting a system for a newly constructed home or replacing an old, inefficient one, our expert team can help you narrow down your choices. We take into consideration several factors when finding the right air conditioning or heating system for your property including your specific comfort needs and budget. We also consider if you have the time to construct a duct system or not. Rest assured that your system will be the right size for your home, energy efficient, and correctly installed.
  • I think my gas furnace is leaking. What should I do?
    If you smell a strong gas odor like a rotten egg smell or your carbon monoxide alarm has suddenly gone off, the first thing that you should do is to get out of your home immediately. You would also want to vacate anyone in the building as gas leaks can become very dangerous. Move to a safe distance and call 911 or your local gas company to report the leak. You may also call our team at (703) 755-0680 to help with any gas line repairs or if you need to connect a new gas line. Our technicians are licensed Master Gasfitters so you can have the peace of mind knowing that we provide safe, efficient gas line services.

Don't Just Take Our Word For It

See What Our Customers Have to Say!
  • “You won't be disappointed.”

    Cara M.

  • “They're always fast, curtious and honest!! Great company.”

    Janet D.

  • “These guys came right away and fixed me up quickly”

    Doug D.

  • “Very friendly, courteous and professional.”

    Elaine A.

  • “I would recommend Cardinal to any and all.”

    Kathy B.

  • “I have been using the team at Cardinal for over 10 years. ”

    Dave W.

  • “Overall a great experience and would definitely call them again!”

    Terri M.

  • “I highly recommend hiring them for any HVAC need you may have in the future.”

    Helik S.

  • “The service at Cardinal is excellent, professional, considerate, honest and prompt.”

    Kathy B.

  • “They need 6 stars.”

    Matthew S.

  • “They did excellent work and were priced fairly.”

    Frequent V.

  • “I would highly recommend Tod Workman and Cardinal Heating & Cooling to anyone. ??”

    Ying C.

  • “Very professional company.”

    John R.

  • “Cardinal staff were very helpful and courteous.”

    First L.