Air Conditioning

Air conditioning service.
Air conditioning service.

These days, air conditioning (AC) is no longer a luxury. When outdoor temperatures soar, you want the cool comfort an air conditioning system brings to your Virginia home.

At Comfort Defender Heating and Air, our team of heating and cooling experts can help you manage the level of comfort you want. As a company, we stay current on our professional education and training to bring top technologies and techniques to you. You can rest assured we will recommend exactly what you need.

With our years of experience in the Fairfax, VA, area, you can rely on us for your air conditioner’s installation, replacement, repair, and maintenance. We work with all makes and models of air conditioners, so that is never a concern for you. Your satisfaction means everything to us.

How Much Money Can a New Air Conditioner Save You?

Our SEER2 (Seasonal Energy Efficiency Ratio 2) energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit’s SEER value and compare it to a newer, more efficient SEER2 unit. You can even customize it to better match your home’s system for a more accurate calculation.

SEER2 Energy Savings Calculator

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This calculator does not guarantee actual costs or savings and is only to be used for educational purposes.

Customize to Your Home

Adjust these settings for a more accurate calculation:




Rate (¢/kWH)


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** Data from U.S. Energy Information Administration
*** Data from 2002 EPA study

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Air Conditioning Installation and Replacement

If your air conditioner has reached the point where repairs no longer do the job or your home’s energy efficiency is at an all-time low, you may need a new system. When your home is ready for a new or replacement air conditioner, our Comfort Defender Heating and Air professionals will install your cooling system without delay.

How do you know if you need a replacement air conditioner? Here are some of the most common issues. Your unit is:

  • Approaching the end of its life span, usually between 15 and 20 years
    Efficiency decreases as your system gets closer to the end of its life. You want to act proactively to plan what your replacement purchase will be instead of acting reactively when your system unexpectedly quits. This can save you money.
  • Experiencing more and more repairs
    Similar to when your car requires more and more repairs, there comes a time for evaluation. Are you spending more in repairs than it would cost to invest in a new system? If the answer is yes, call and talk to one of our knowledgeable team members to discuss your options.
  • Showing signs of running inefficiently
    How can you tell if your air conditioner is running inefficiently? A good indication is if your energy bills are increasing and your utility company’s rates remain steady.

This typically demonstrates it’s taking longer for your heating, ventilation, and air conditioning (HVAC) system to cool down your Virginia home to your preferred comfort level. Your system is running longer and using more energy than it should in this case—an increase in energy costs.

If you notice any of these signs with your air conditioner, or if you suspect another reason for needing a replacement, talk to one of our Comfort Defender Heating and Air team members. We will design a system best matched for your comfort needs and budget. Our experts are always here to help you.

We also offer several financing options to help if this is a concern. Contact us to discuss how our team can guide you through our process.

Air Conditioning Repairs

Not having your air conditioner working on the hottest of days in Virginia can be exasperating. Whenever you need a repair, let our heating and cooling experts quickly remedy it for you.

There are many ways your air conditioner can stop working in its normal capacity. A few symptoms you could experience are:

  • Hearing an unusual noise
  • Smelling an unusual odor like burning
  • Feeling warm air coming from your vents
  • Noticing your air conditioner is frozen
  • Leaking water

These symptoms mean you have an issue with your air conditioner. Ignoring problems usually only makes them bigger and more costly. Our recommendation is to have one of our Comfort Defender Heating and Air team members promptly diagnose and repair the issue for you.

Sometimes a repair turns into an emergency. Give us a call when it’s urgent. We are here 24/7 for you.

When you do need our professionals to make a repair, you can count on it staying repaired. We make our repairs right the first time—and only use the highest quality parts and materials when working on your system. Our experts are always here for you.

Air Conditioning Maintenance

Keeping your air conditioner in its best operating condition is your goal. You want your system inspected, cleaned, and tuned up on a regular basis to help avoid unexpected and costly repairs and breakdowns.

Routine maintenance by our trained and experienced Comfort Defender Heating and Air team helps your air conditioner cool your home efficiently and reliably. With annual professional care, you may experience maintenance benefits such as improved energy efficiency, extended system life span, and decreased emergencies.

We recommend having our experts prep your air conditioner before you use it for the first time in the spring to give you consistent cooling all season.

To help you manage your maintenance, talk to us about our maintenance program, Precision Tune-Up Maintenance Plan. Your air conditioner tune-up and inspection are part of the plan, so call and speak with one of our educated and friendly team members about our program today.

Trust Comfort Defender Heating and Air With All Your Air Conditioning Needs

We provide all the services you need to achieve the level of cooling comfort you want in your Fairfax, VA, home from your air conditioner. Call Comfort Defender Heating and Air at 703-594-7900 or request service online today to schedule your air conditioning installation, replacement, repair, or maintenance.


“The team was really helpful. Sadaf immediately helped me get on the schedule when my AC broke late on a Sunday night, and again at midnight during the week. Both times they got me back to normal in less than a day. David helped get my home taken care of for my family and was great with all my pets. He was pleasant, fixed my problems quickly, and explained everything as many times as I asked. He even gave me some advice to watch for in the coming years so I can plan for service in the future. This was a great experience!”
- Briana G.

“David and the entire team were extremely professional. They arrived early, kept me updated on the progress, and stayed late to make sure everything was working. I highly recommend Comfort Defender and plan to share with all my neighbors and friends. Excellent customer service across the board from initial meeting to install.”

- Darlena R.

“To me everything started from the greetings.
Sadaf did wonderful job to let me feel that, I'm in good hands on my 1st contact!

2nd chapter, because of my work schedule, I couldn't be at home, so my wife was there to deal with Mr. David and other gentleman.
They were just ausome!!!!


- Shahnewaz S.

“David and his brother installed Air Conditioner at our home. David is very customer oriented and tries his best to help out the customer. He is very timely and very responsive. I would highly recommend his service”

- Chalapathi K.

“Comfort Defender's AC repair service at my home today was not only professional and courteous but also impressively timely. I called in and within 2 hours my ac was working. Tony exhibited exceptional skills and maintained a high level of professionalism throughout the repair process. I highly recommend Comfort Defender for their top-notch service and dedication to customer satisfaction.”

- Lida Q.

“Highly Recommend!!!! We had the best experience with Comfort Defender installing our Trane HVAC system. Our daughter has severe allergies to dust mites and pet dander, David also installed an air purifier and humidifier and this helped eliminate the allergens in our home by 90%. We have also used them for whole house water filtration and water softening system to our home. David is a top notch professional, courteous and extremely knowledgeable in his field. I highly recommend them as they are experts in all aspects of HVAC.

We have also used him for installation of Trane unit with air purification system to our Business in Fairfax, the company is well versed in both residential hvac and commercial hvac. Top notch professionals!”

- Mariam A.

“Comfort Defender provided us with an excellent service for the replacement of our HVAC system. David is very knowledge in his field and performed the tasks in a professional and timely manner. We will definitely consider using their services in the future.”

- hamid y.

“They came out and took care of our house. Awesome! Very experienced, honest, and did an exceptional job. We’re so thankful for the professionalism and expertise. Thank you!”

- Lindsey C.