August is The Perfect Time

For Premium Maintenance Checkup

Only $79 for Dave’s Previous Customers

YOUR $79 PREMIUM MAINTENANCE INCLUDES

GREAT SERVICE GUARANTEED

If your system breaks down this late summer after receiving your Premium Maintenance Checkup…

WE’LL WAIVE YOUR DIAGNOSTIC/TRIP CHARGE**

Call (571) 408-8170

We’ll get you scheduled for this special $79 premium system maintenance offer!

When Your AC Breaks, We Get It

We’ve all been there — the AC dies on a 95-degree day, and suddenly your home feels like an oven. Whether it’s a strange rattle, weak airflow, or total system failure, you need answers fast.

That’s where Dave’s comes in. Our experienced team is ready to travel anywhere from Leesburg to Arlington and knows the difference between a quick fix and a deeper issue. You never waste time or money guessing. We diagnose precisely, explain clearly, and fix it right the first time.

Why Reston Homeowners Choose Dave’s

Experience You Can Feel

We’ve served Northern Virginia homes for 50 years.

Fair, Upfront Pricing

No upsells, no hidden fees — just straight answers.

Local & Reliable

Based right here in Sterling, ready when you need us.

Respectful Service

We treat every home like it’s our own.

Some systems reach the point where another repair just isn’t worth it. If that’s the case, we’ll walk you through honest options for replacement, including energy-efficient models that can lower your monthly bills. No pressure — just clear advice from people who care about doing what’s right for your home.

Keep Your HVAC System Running Smoothly

Dedicated to Your Comfort Since 1975

Air conditioning is essential, especially during the intense summer heat we experience in Northern Virginia. When your system isn’t working as it should, Dave’s Heating and Air Conditioning is here to help.

We specialize in a full range of residential and light commercial AC services, from quick repairs to complete system replacements.

Our team is well-versed in servicing and installing a variety of top brands, ensuring your system operates at peak efficiency.

With nearly five decades of experience, we take pride in delivering transparent service and lasting results to Reston, Herndon, Sterling, and across Northern Virginia. Trust us to keep your home or business cool and comfortable.

Call 571.408.8170 and let’s fix your AC issues.

Hear It from Our Happy Customers

Nothing makes us prouder than hearing directly from the wonderful people we serve right here in Sterling, Herndon, Reston and Northern Virginia. Our reputation is built on knowledgeable technicians, courteous service, and the promise that we always leave your home as clean as we found it—if not cleaner!

Customers regularly praise our team for arriving on time, delivering expert system installations and repairs, and ensuring the whole process is seamless from start to finish. Whether it’s a complete HVAC replacement or routine maintenance, folks appreciate the extra care and attention to detail we bring. Many even say they’d recommend us to friends and neighbors without hesitation. Now that’s high praise!

      EXCELLENT  
   Based on 146 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Sarah Stein 
 
 
 
 Trustindex verifies that the original source of the review is Google. We just had Dave’s come out to our house today.  We thought we might have a serious issue with our heating and air system.  The two technicians cleaned and serviced the unit and let us know that our unit was fine.  We went from thinking we had an expensive problem to only having to pay a very reasonable service fee.  They were professional and wonderful to work with.  We will be using the company in the future and will recommend them to others.
  
 
      Posted on Google  
   
   Eric Moy 
 
 
 
 Trustindex verifies that the original source of the review is Google. I scheduled online for an AC diagnostic which was seamless. Adam came out in that time frame and gave me the run down of the issues. He was very knowledgeable and I would've went with him to fix the compressor issues.

Unfortunately, whoever this companies receptionist is sounds like she hates her life over the phone. It took them a week to get back to me with a quote. She calls me, asks if I want to get it fixed and immediately asks for my credit card info. I don't have an estimate of what's being repairs or materials they need. I tell her please send it over and I'll pay the down payment through the portal since I was driving to work. A day goes by and crickets, I get another call asking about payment. She says she sent the email but the only thing I received was a schedule confirmation. Finally it arrives and everything is still lumped into one price. It wasn't that big of a deal, but I decided to get a second quote and this other place turned an itemize quote around in an hour, came out the next day, didn't ask for a deposit, and got the job done.

If you all get that much business, the sentiment is your customers are just a number, and you can't be bothered to give the bare minimum customer experience then so be it.
  
 
      Posted on Google  
   
   Jan and Joe Adams 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great job. Dave’s assisted with design as this was a replacement of a chiller system. Very pleased. Adam and team doing the installation we awesome.
  
 
      Posted on Google  
   
   David Loughran 
 
 
 
 Trustindex verifies that the original source of the review is Google. Good experience from start to finish.  Notification of appointments and arrivals. All members of the team were professional and polite.  This was for a whole house steam humidifier.
  
 
      Posted on Google  
   
   Cheryl Wacker 
 
 
 
 Trustindex verifies that the original source of the review is Google. I needed a new AC system due to RELAC out of business.  Todd was my first contact.  He explained my options, answered all my questions...even after he left and I continued to contact him.  He was very patient with all my concerns.  On the install day, Adam and his team arrived on time, and communicated with me during the entire process.  They explained thoroughly what they were doing and why.  They did not leave until all had been checked out, and they cleaned up thoroughly.  I will recommend them to anyone needing a new AC system.
  
 
      Posted on Google  
   
   nora b 
 
 
 
 Trustindex verifies that the original source of the review is Google. I’ve been a Dave’s customer for over 20 years. Great people, great service.
  
 
      Posted on Google  
   
   Stuart Logan 
 
 
 
 Trustindex verifies that the original source of the review is Google. Exceptional service. Furnace delivered and installed professionally.  Very nice to work with family-owned business that understands customer care!
  
 
      Posted on Google  
   
   Norm Melnick 
 
 
 
 Trustindex verifies that the original source of the review is Google. The two techs (Adam and Stan) did an outstanding job. They were on time, professional, and thorough in analyzing the issue and then remedying the situation.
  
 
      Posted on Google  
   
   Robert Becker 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have been using Dave’s heating and air conditioning for many years. Their service has been impeccable. They always arrive on time and the quality of their workmanship is first class!