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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Divya Kulkarni profile picture
Divya Kulkarni
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Five stars all the way! Adam did a fantastic job replacing our HVAC — professional, knowledgeable, and tidy, and he took the time to explain everything along the way. Dave's Residential Electrical and Air Conditioning made the whole process smooth from start to finish, and owner Javier clearly runs a company that cares about doing the job right. Our new system is running beautifully. Highly recommend!
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Diane Ludewig profile picture
Diane Ludewig
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Adam is the best! Efficient, knowledgeable, considerate… represents Dave’s extremely well!
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Janet Lynn Parker profile picture
Janet Lynn Parker
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Dave's provides excellent , dependable service. Adam is a great technician. Honest service and products provided at a good price.
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Sherry Brown profile picture
Sherry Brown
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I am a realtor and I have had the pleasure of working with Dave’s heating and air for a few of my real estate clients. The team has replaced water heaters, serviced HVAC systems and been a 2nd opinion when needed! Highly recommend having this company as a vendor if you are an agent!
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Tanya Clarke profile picture
Tanya Clarke
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Adam and his team were very professional and friendly. Once the water heater was installed he walked me through the installation process, showed me how it functions and gave tips for maintenance etc.
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Pauline Montague profile picture
Pauline Montague
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From the initial, timely estimate to the install everyone at Dave's was very responsive. The install was seamless and the cleanup was excellent. Even though I know next to nothing about HVAC systems, Adam never let me feel like my questions were silly. I would highly recommend this company for all of your HVAC needs.
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Paul Curylo profile picture
Paul Curylo
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These guys were prompt, professional, fast, and attentive from initial contact to system startup. Highly recommend them for your needs.
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Greg Stavrou profile picture
Greg Stavrou
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Dave’s did a great job replacing my old gas hot water heater! Professional and clean work with a choice of Bradford White and AO Smith 75 gallon in stock. Excellent planning visit, quoting and contracting process. Even a follow up to make sure we are happy! Thank you Dave’s!
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Jason G profile picture
Jason G
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Adam did an excellent job replacing my water heater. He was professional, courteous, and respectful of my home throughout the entire installation. He took care to keep everything clean and made sure there was no mess left behind. I also really appreciated that he kept me updated throughout the process and explained what he was doing along the way. Once the installation was complete, his team walked me through everything that had been done and made sure I understood the new system before he left. Overall, it was a great experience. Adam was knowledgeable, professional, and easy to work with. I would definitely recommend him.
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浅川 Asakawaめぐみ Megumi profile picture
浅川 Asakawaめぐみ Megumi
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Today, Adam came to install two UV units. We have been with Dave’s Heating & Air Company for more than 20 years, even through a change in ownership. We still recognize many of their technicians from the old days. Adam is very knowledgeable about HVAC systems. He is friendly, professional, and clearly takes pride in his work. We were very pleased and grateful to have him help us. Dave’s company is lucky to have employees like Adam.