
Heating and Air Conditioning Services in Northern VA
Keeping Homes and Small Businesses Comfortable All Year Round
Looking for reliable HVAC services in Fairfax and Prince William Counties? Look no further! Choose Alex HVAC Service, LLC for top-notch heating and air conditioning solutions. Call us when you need quality service and we’ll ensure your comfort is our priority. Trust us to get the job done right the first time.
EXCELLENT Based on 241 reviews Annette HinamanMarch 25, 2025 Thank you for doing such a great job. Price was right and the professionalism of the company and your staff was outstanding. Kelvin PierceMarch 14, 2025 Alex and his team are great. They have done several projects for me and they are the best. Great service at reasonable prices. I couldn't be more satisfied. Phyllis IsraelMarch 13, 2025 LUIS GOUROMarch 6, 2025 Best services Alex , tell you the truth what needs to be done to get your system working again recommended 100% Alex VillaMarch 6, 2025 Renponsabilidad y professionalismo recomendado 100% Jose FloresFebruary 28, 2025 Very good service Isabella ZuluagaFebruary 26, 2025 Excelente servicio. Miguel was great and very helpful. Eleleta GezahegnFebruary 15, 2025 Alejandro and his team are amazing! We had an old AC system that went out after 25 years! The area where the AC system was difficult to access and I was quoted high prices and even told they may have to tear down a wall. Alex HVAC gave me the best deal and completed it with no issues. Will definitely recommend them! Sonya HoffmannFebruary 13, 2025 Everything about my experience was great. Knowledge, serive, pricing. Mike DJanuary 28, 2025 Great work, fast and efficient!
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Family Owned Business for 25 Years
Expert Heating, Ventilation & Air Conditioning Services in Northern VA
We want all of our customers to be happy they chose ALEX HVAC Service, LLC
Welcome to Alex HVAC Service, your go-to solution for exceptional heating repair in Northern VA. As temperatures rise and drop, ensuring your HVAC system is in optimal condition becomes crucial.
As a family-owned and operated business, we prioritize the reliability of your heating, ventilation, and air conditioning (HVAC) systems, recognizing their pivotal role in sustaining a comfortable environment throughout the year.


- Free Estimates
- Free Estimates
- Up-Front Pricing
- Convenient Financing Options
- Licensed & Certified Technicians
- Family Owned & Operated
- Fast Reliable Servies
If you’re in need of reliable and efficient cooling and heating repair services, Alex HVAC Services is the name you can trust.
Family Owned Busines for 25 Years
Expert Heating, Ventilation & Air Conditioning Services in Northern VA
We want all of our customers to be happy they chose ALEX HVAC Service, LLC
Welcome to Alex HVAC Service, your go-to solution for exceptional heating repair in Northern VA. As temperatures rise and drop, ensuring your HVAC system is in optimal condition becomes crucial.
As a family-owned and operated business, we prioritize the reliability of your heating, ventilation, and air conditioning (HVAC) systems, recognizing their pivotal role in sustaining a comfortable environment throughout the year.


- Free Estimates
- Free Estimates
- Up-Front Pricing
- Convenient Financing Options
- Licensed & Certified Technicians
- Family Owned & Operated
- Fast Reliable Servies
If you’re in need of reliable and efficient cooling and heating repair services, Alex HVAC Service is the name you can trust.
Heating, Ventilation & Air Conditioning Services in Northern Virginia
Our Services
Experience the ultimate comfort all year round with our wide range of HVAC services tailored for homes and commercial businesses. Count on our extensive knowledge and expertise to keep you cozy and comfortable every day. Say goodbye to discomfort and hello to uninterrupted bliss with our services.
SPECIALS
$30 off on Your Next Repair
*Terms and conditions apply. Contact us for more details.
Good until March 31, 2025
Save 10%* on
any HVAC System Upgrade
Upgrade your comfort level while saving big!
Good until April 6, 2024
*Terms and conditions apply. Contact us for more details.
Seniors Save 10%* on all HVAC Services
We value our seniors and want to make home comfort more affordable for you!
Good every day of the week!
*Terms and conditions apply. Contact us for more details.

We offer flexible payment options
Prefer to pay over time rather than all at once? Prequalify for financing today and contact us to learn more about our services!
Customer Reviews
Providing a Customer-Focused Approach to Comfort
- Proffesionalism
- Responsiveness
- Punctuality
- Quality of Work
Don’t just take our word for it—hear what our satisfied customers have to say about their experience with Alex HVAC Service, LLC. Our testimonials speak volumes about the quality of our work and our commitment to customer satisfaction.
5/5
Alex installed a brand new Furnace and Humidifier in my townhome. He not only did a great job with the installation, but also provided me with exceptional customer service. When I called Alex to ask him how to work the furnance because I wasn't available during the actual installation, he went out of his way and drove all the way back to my home just to show me! I will use Alex for any of my future Heating and Cooling needs, and highly recommend him!

5/5
Alex HVAC is timely, responsive, and communicative. I couldn't be happier with their service. They installed a new system throughout my house, responded to two minor issues, and it works perfectly. Thank you

5/5
Alejandro showed up on time, was able to fix the issue promptly and was friendly. Alex HVAC, gave me better pricing and explained the issue better than the previous technician I had come out. I’d recommend them for HVAC needs.

5/5
Alex is absolutely amazing! I had 2 different companies come out to look at my HVAC system and both told me they couldn’t even service my A/C because of the way it is set up. They did know I needed a new one because they could tell it was from the 80s! All of them quoted me the price of a nice used car! Both companies had to call their managers for them to explain how my A/C is even set up! Alex came out and took a look at it and right away knew everything these 3 companies had to call managers for. All of his employees are professional and kind! Alex will go out of his way to help anyone and won’t over charge you. He’s a kind, professional, and honest man!

5/5
Alex HVAC Service LLC provides exceptional service for HVAC maintenance, repair and replacement. Five stars. Alex HVAC Service was recommended by a friend. I have since used them through two moves. They kept my system working for years until it could no longer be safely repaired and installed a new HVAC system, beating competitors prices. They also replaced my hot water heater. Most recently they have maintained a traditional and a split Air/Heat system. I trust Alex HVAC Service to provide expert advice on my systems. They respond to issues and get me scheduled on their calendar promptly. Alex HVAC Service provides estimates and invoices as well as photos and a detailed explanation of work that is needed. I highly recommend Alex HVAC Service LLC.

Offering Affordable Financing Options for your HVAC Installation

We're Here for Your HVAC Needs
Our Service Areas
Alex HVAC is happy to serve Fairfax and Prince William Counties and the surrounding areas with quality air conditioning & heating services.
- Alexandria, VA
- Arlington, VA
- Annandale, VA
- Dumfries, VA
- Gainesville, VA
- Lorton, VA
- Lakeridge, VA
- McLean, VA
- Reston, VA
- Stafford, VA
- Triangle, VA
- Woodbridge, VA

Ready For Quality Service?
Call Alex HVAC Service
Today
Call Now! Available 24/7
571-368-2050
We Accept All Major Credit Cards

CONTACT ALEX HVAC SERVICE TODAY!
From HVAC repairs to complete systems installations, your heating and cooling systems is one of the most important systems in your house, and we’ll make sure it’s done right!
- Financing Options Available
- Licensed & Insured for your peace of mind
- Always on Time & on Budget
- 100% Upfront Pricing - No Unprecedented Costs
- Hablamos Español
Fill in the form or call us now for your inspection and estimate.
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