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Boiler repair and replacement reviews from Northern Virginia homeowners

What do customers say about SwiftPro's hot water boiler repair and replacement?

5 reviews of SwiftPro talk about hot water boiler repair and replacement on Google and Angi, and every one of them is five stars. One customer wrote: Replacement for my broken gas water boiler was professionally done and in a timely manner. (Isaac K., Google, September 15, 2026). The newest is from September 15, 2026. To book SwiftPro, go to goswiftpro.com/booking or call 703-997-9757.

Last updated October 19, 2026 · 5 reviews in all

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The boilers reviews that say the most

The ones up top say the most: the problem, how it turned out and how they were treated.

Alexandria5 out of 5 stars

Swift Pro gave me excellent service when my boiler needed to be replaced during the polar vortex. Alex Hittle came quickly, consultedith their boiler specialist, and replaced my boiler quickly. Alex even managed to change their schedule, with the kind permission of their other customer so that I could have heat again in the freezing weather.Alex noticed that I also needed an expansion tank for my hot water heater and installed that as well so I would be up to code. …

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There was excellent communication from the office throughout the work and everything was cleaned up each time there were repairs. I highly recommend this company.

Elizabeth W.Google (Chantilly profile) ↗
5 out of 5 stars

Replacement for my broken gas water boiler was professionally done and in a timely manner.

The technicians knew exactly what they were doing.

The price was a bit high and I was expecting to get a small rebate but there was none.

Thanks guys

Isaac K. · September 15, 2026Google (Chantilly profile) ↗
Woodbridge5 out of 5 stars

Efrain was amazing in diagnosing and repairing our HVAC unit. Suggested additional repair that need to be done as well without being pushy like other companies.

I had the pleasure of working with Efrain and Alex last year on a Boiler heater. The quality of work and total proffesionalism contributed 100% to my decision in reaching out to Swift Pro again.

David B.Google (Chantilly profile) ↗
Reston5 out of 5 stars

Swiftpro did a great job recommending a new system for a Condo that did not previously have one at all (Old Boiler System). The installation went great. The price was very reasonable.

Rachel G. · September 11, 2026Google (Chantilly profile) ↗

What this job usually involves

Boiler calls are mostly radiators that stay cold while the boiler runs, a boiler that locks out or won't fire, a rumble like a kettle, banging in the pipes, a relief valve that drips, or water on the floor under it. Cold radiators usually mean the hot water isn't moving: a stuck circulator pump, a zone valve that won't open, or air locked in the loop. A lockout is usually a safety doing its job: low water, a flame sensor that can't see the flame, or a run of failed starts. A dripping relief valve means the pressure is climbing, most often from a waterlogged expansion tank or a fill valve that won't shut off.

Repair it when the problem is a part: a circulator pump, a zone valve, an expansion tank, a flame sensor or the controls, with the price in writing first. Replace it when the boiler itself is failing: a leaking heat exchanger or a cracked cast iron section, kettling a flush won't fix, or a big repair on a boiler past 20 years old. A cast iron boiler often runs 25 years or more, and a condensing or combi boiler 15 to 20 with yearly service. We work on hot water boilers that burn natural gas or propane, and install Navien, Weil-McLain and Force. We don't work on steam boilers or oil, and we'll tell you on the phone if yours is one.

Hot water boiler repair and replacement on goswiftpro.com →

A new Weil-McLain gas boiler that SwiftPro installed in a Northern Virginia basement, with new copper near-boiler piping, three zone valves and a blue expansion tank
A gas boiler replacement, piped and zoned

Questions people ask

Where does SwiftPro do hot water boiler repair and replacement?

Across Northern Virginia, from the shop at 4230 Lafayette Center Dr N in Chantilly. The reviews on this page come from customers in Alexandria, Reston and Woodbridge.

How do I book SwiftPro?

Book online at https://goswiftpro.com/booking/ or call 703-997-9757. Emergency service is 24/7. SwiftPro Heating, Cooling & Plumbing is at 4230 Lafayette Center Dr N in Chantilly, Virginia, and works across Northern Virginia.

Why are my radiators cold when the boiler is running?

The hot water isn't moving: usually a stuck circulator pump, a zone valve that won't open, or air locked in the loop. Check that the thermostat is calling for heat and the pressure gauge reads above about 12 psi. If both look right, it's a repair, and a diagnostic finds which part.

What's the rumbling sound, like a kettle?

That's kettling: water flashing to steam inside the heat exchanger, usually because scale or sludge has built up and the water can't carry the heat away fast enough. It won't fix itself, and it gets louder. A flush and a look at the water flow usually sort it out; a badly scaled heat exchanger can mean the boiler is near the end.

Why is the relief valve on my boiler dripping?

The pressure is climbing. Most home hot water boilers sit around 12 to 15 psi cold and under about 25 hot, and the relief valve opens at 30 to protect the boiler. The usual cause is a waterlogged expansion tank or a fill valve that won't shut off. Never cap or plug the relief valve.

Should I repair my boiler or replace it?

Repair it when the problem is a part: a circulator pump, a zone valve, an expansion tank, a flame sensor or the controls. Replace it when the boiler itself is failing: a leaking heat exchanger, a cracked cast iron section, or a big repair on a boiler past 20 years old. Age alone isn't a reason to replace one that heats fine.

What kinds of boilers does SwiftPro work on?

Hot water boilers that burn natural gas or propane: cast iron boilers that vent up the chimney, and condensing and combi boilers that vent out the wall. We install Navien, Weil-McLain and Force. We don't work on steam boilers or oil. Repair and replacement prices are at goswiftpro.com/boilers.

Every other review that mentions it

5 out of 5 stars

Customer service was amazing. Alex came in with his techs, listened to what this issue was and got everything done in a timely manner. Efrain was amazing. He came in with considerable experience diagnosed the problem and fixed it. The job itself was not an easy one, but SwiftPro overcame the challenge and got it done right. Will definitely hire again! …

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Thank you so much, [Member Name Removed], for sharing your experience! It was truly our honor to guide you through getting your boiler heater back up and running. Alex, Efrain, and the team worked hard to diagnose and resolve the tricky zone valve issue, ensuring your upstairs is warm again. We're so glad we could turn this challenge into a success for you. Please don’t hesitate to call us for anything else you need, and we’d love for you to follow us to stay connected!

David B. · November 2024Angi (Chantilly profile) ↗

Need this done? Talk to us.

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Emergency service 24/7.

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