Local HVAC & Plumbing Experts
Defending Your COMFORT.

ABOUT US

Welcome to Comfort Defender Heating and Air, your reliable partner in heating, ventilation, and air conditioning (HVAC) services. We are a full-service HVAC company dedicated to providing our customers with top-notch solutions for all their comfort needs.

At Comfort Defender Heating and Air, we understand the importance of maintaining a comfortable and healthy indoor environment, and we are committed to helping our clients achieve just that. Whether you need repairs, installations, maintenance, or replacement of your HVAC system, we have the skills and experience to deliver quality workmanship and exceptional customer service. Our team consists of highly trained and certified technicians who have years of experience in the HVAC industry.

We take pride in our work and strive to exceed our customers’ expectations by providing efficient, reliable, and affordable services. We use state-of-the-art equipment and top-quality materials to ensure our work is of the highest standard.

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Comfort Defender service vehicle parked in front of houses.

WHAT OUR CUSTOMERS ARE SAYING ABOUT US

Air Conditioning Maintenance in Ashburn 20148

October 6, 2025

“Working with David, Olef, and Sadaf was an absolute pleasure. They were fast, extremely courteous, knowledgeable and took care of all my questions and concerns. I trusted them to take care of my HVAC needs and they did not disappoint. Top shelf service all the way. They also provided me with very competitive pricing compared against their competitors. Comfort Defender Heating and Air will have my business from now on. Thank you so much for all your support and guidance.”

- Apollo M.

Air Conditioning Repair in Ashburn 20148

October 6, 2025

“I can’t say enough good things about this company and the staff. I’m always impressed by the professionalism and knowledge of the employees. They absolutely offer the best pricing. My AC was completely out. David showed up and analyzed it and repaired it with in 10 minutes. He took the time to explain it to me and I really appreciate the attention to detail. Cole air was pouring out of the ducts in a few minutes. I only use Comfort Defender for all my home needs. Theu have earned my respect and I trust them.”

- Abe M.

Gas Fireplaces Maintenance in Reston, VA 20194

May 30, 2025

“Comfort defender is the best experience that I’ve had so far with HVAC and fireplace maintenance. Their technicians were prompt, courteous, swift, and knowledgeable. Their entire organizational structure from their owner through all of their employees have been nothing but helpful and extremely proficient in their jobs. I am extremely impressed and would recommend them for anyone.”

- Greg B.

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FINANCING AVAILABLE

Synchrony Financing offers a seamless and efficient solution to ease the financial burden of HVAC system repairs or replacements. With flexible payment plans and competitive interest rates, homeowners can now tackle unexpected HVAC expenses without straining their budgets. By spreading the cost over manageable monthly installments, Synchrony Financing ensures that customers can swiftly restore comfort to their homes without delay. Let our team help you Defend Your Comfort.

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RECENT NEWS

Schedule Your Annual Furnace Inspection Now

September 30, 2025

What’s at the top of your fall to-do list in Fairfax? Make sure it is your furnace.

What Is a Plumbing Inspection?

September 15, 2025

When was the last time you thought about your plumbing? If you’re like most Reston, homeowners, it’s probably only when something goes wrong—a leaky faucet, a clogged drain, or worse, a burst pipe.

Is Your Thermostat Causing Your AC to Freeze Up in Centreville?

August 30, 2025

It’s another hot summer day in Centerville, and you feel like you might melt. Your air conditioner is not doing its job.

It’s acting a bit icy.

We service northern Virginia and the surrounding areas!

Centreville • Reston • Oakton • Chantilly • Manassas • Clifton • Herndon • Annandale • Vienna • Lorton • Springfield • Woodbridge • Newington • South Riding • Fairfax

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PRECISION TUNE-UP MAINTENANCE PLAN

Our comprehensive program offers regular, scheduled maintenance that ensures optimal performance and extends the lifespan of your HVAC equipment. With skilled technicians conducting precision tune-ups, potential issues can be detected and resolved early, preventing costly breakdowns down the road. Improve energy efficiency, lower utilities, and protect your system's manufacturer warranty with our Precision Tune-Up Maintenance Plan.

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