A New Heating System Installed With Care and Expertise

When your heater can no longer keep your home warm—or the cost of repairs outweighs the life it has left—Dave’s Heating & Air is here to guide you through a smooth, honest, and stress-free replacement experience. 

When It’s Time to Upgrade, We Make It Simple

No one looks forward to replacing their heating system. But when your heater becomes unreliable, noisy, or expensive to run, a new system isn’t just a fix—it’s a long-term upgrade to your comfort, safety, and energy efficiency.

At Dave’s, we believe in making the process clear and straightforward. We evaluate your home, explain your options, and help you choose a system sized and designed for your unique Northern Virginia needs. No overselling. No pressure. Just honest recommendations backed by decades of experience.

Why Homeowners Choose to Replace Their Heater

Most systems give clear signs when they’re nearing the end of their lifespan. You might notice longer run times, inconsistent heat, rising utility bills, or frequent repairs that never seem to solve the problem for long. Older equipment also becomes less safe and less efficient over time, especially gas furnaces with aging combustion components.

Replacing your system isn’t just about new equipment—it’s about restoring comfort, reducing stress, and giving your Reston home reliable heat for years to come.

An HVAC technician from Dave's Heating & Air holding a manifold gauge set next to an outdoor Trane air conditioner condenser unit during a home service call.

What a Heating Replacement Looks Like With Dave’s

A proper installation affects how your system performs for its entire lifespan. That’s why we take the time to do it right. Before any work begins, we walk you through the plan, answer questions, and make sure the chosen system aligns with your home and budget.

On installation day, our team protects your home, removes the old equipment carefully, installs the new system with precision, and ensures everything is operating safely and efficiently. Once complete, we’ll review the setup with you so you feel confident and informed.

Systems We Install

We replace a wide range of heating equipment depending on what your home needs:

  • Gas and electric furnaces

  • Heat pumps

  • Dual-fuel and hybrid systems

  • High-efficiency models designed for lower energy usage

We work with trusted brands and help you compare features, efficiency ratings, and long-term value so you can choose the system that fits your goals—not someone else’s sales quota.

When Replacement Makes More Sense Than Repair

While our first choice is always to repair when it makes practical and financial sense, there are times when replacement is the more responsible option. If your system is older, facing multiple failing components, or requires a costly repair that doesn’t guarantee long-term reliability, we’ll talk through the numbers and the benefits so you can decide with confidence.

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.

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Keeping Northern Virginia Warm Since 1975

Reliable Heating Service, Repairs, and Installations

When the temperatures drop, your heating system becomes one of the most important parts of your home. Whether you rely on a furnace, heat pump, or a hybrid setup, you need service you can trust — and a team that understands how to keep your system running safely and efficiently.

At Dave’s Heating & Air, we provide complete heating care for residential and light commercial properties. From seasonal tune-ups and safety inspections to fast repairs and full system replacements, our technicians bring decades of experience and a commitment to doing the job right.

For nearly 50 years, homeowners in Reston, Herndon, Sterling, and surrounding Northern Virginia communities have turned to Dave’s for honest recommendations, dependable service, and comfort they can rely on all winter long.

Smiling HVAC expert from Dave's Heating & Air wearing a company uniform shirt in a residential home setting.

Call 571.346.3940 and let’s keep your system 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!

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Sarah Stein profile picture
Sarah Stein
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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.
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Eric Moy profile picture
Eric Moy
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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.
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Jan and Joe Adams profile picture
Jan and Joe Adams
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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.
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David Loughran profile picture
David Loughran
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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.
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Cheryl Wacker profile picture
Cheryl Wacker
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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.
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nora b profile picture
nora b
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I’ve been a Dave’s customer for over 20 years. Great people, great service.
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Stuart Logan profile picture
Stuart Logan
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Exceptional service. Furnace delivered and installed professionally. Very nice to work with family-owned business that understands customer care!
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Norm Melnick profile picture
Norm Melnick
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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.
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Robert Becker profile picture
Robert Becker
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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!