Reliable Heat Pump Service for Year-Round Comfort

From heating to cooling and everything in between, Dave’s keeps your heat pump running efficiently in every season.

A Smarter Approach to Heat Pump Care

Heat pumps work all year long in Northern Virginia — heating your home in the winter, cooling it in the summer, and constantly adjusting to outdoor temperatures. When one system handles everything, it needs more than a quick visual check to stay efficient and reliable.

That’s why Dave’s takes a different approach. Heat pumps aren’t built like traditional furnaces or standard AC systems, and treating them the same way can lead to missed issues, higher energy use, or unnecessary breakdowns. Our technicians are trained specifically to evaluate heat pump performance, including variable-speed and inverter-driven models. We focus on the components and patterns that matter most, so your system stays balanced, efficient, and ready for whatever the season brings.

What We Look For During a Heat Pump Service Visit

A well-maintained heat pump keeps your home comfortable without wasting energy.

During your service appointment, we take a deep look at the components that matter most, so you get a healthier, more efficient system.

Measure refrigerant levels and system pressures
Inspect reversing valve operation
Test defrost cycle functionality
Verify airflow and clean coils
Check compressor and electrical performance
Confirm heating and cooling mode efficiency
Inspect thermostat communication and sensor readings

Repairing Heat Pumps the Right Way

When something goes wrong — weak heat, ice buildup, unusual noises, or a sudden spike in your electric bill — a heat pump problem can worsen quickly. Our technicians don’t rely on guesswork. We troubleshoot methodically to identify the root cause, explain your options clearly, and complete repairs with long-lasting results. Here are some of the most common repairs we experience in Northern Virginia:

Defrost board issues
Reversing valve failures
Electrical or control board problems
Low refrigerant or leaks
Outdoor unit icing
Compressor and fan motor failures

The Value of Routine Heat Pump Maintenance

Because your heat pump runs year-round, maintenance brings even more value than with a traditional HVAC system. A clean, tuned, well-balanced heat pump uses less energy, keeps temperatures consistent, and experiences fewer mid-season breakdowns.

Most homeowners schedule service twice a year to keep performance high in both heating and cooling seasons.

Sometimes a repair isn’t the most cost-effective solution — especially if your heat pump is older or facing multiple failing components. If replacement is the smarter move, we’ll help you compare efficiency ratings, costs, and comfort features without the pressure or pushy sales tactics.

Why 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.

Not everyone is comfortable with HVAC terminology — and that’s okay. At Dave’s, every tune-up includes a quick explanation of what we inspected, what looked great, and what might need attention down the road. Our goal is to make the health of your AC easy to understand, without overwhelming you with jargon.

If something needs repair, we show you why. If everything looks good, we tell you that too.

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Keep Your Heat Pump Running Smoothly

Dedicated to Your Comfort Since 1975

Heat pumps do double duty in Northern Virginia—keeping your home warm in the winter and cool in the summer. When one system handles comfort year-round, it needs the right care and the right team behind it. That’s where Dave’s Heating & Air comes in.

We provide comprehensive heat pump services for both residential and light commercial properties, including precise diagnostics, reliable repairs, seasonal tune-ups, and full system replacements when it’s time for an upgrade. Our technicians are trained specifically in heat pump technology, from standard units to high-efficiency inverter and variable-speed models, so your system can perform at its best in every season.

With nearly five decades of experience serving Reston, Herndon, Sterling, and surrounding Northern Virginia communities, we’ve built our reputation on transparent service, honest recommendations, and lasting workmanship. When your heat pump needs attention, trust Dave’s to keep your home comfortable—no matter the weather.

Call 571.346.3940 and let’s keep your heat pump humming!

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!