Here is the boiler we recommend.

Review your estimate and book a visit to confirm it.

SwiftPro Heating, Cooling and Plumbing

Estimate

Install

Questions?

(703) 997-9757
A new Weil-McLain cast iron gas boiler SwiftPro installed on the chimney in a Northern Virginia basement, with rebuilt copper piping and a blue expansion tank
Navien NHB-H high-efficiency condensing boiler, a heat-only wall-hung boiler that vents out the wall, which SwiftPro installs in Northern Virginia homes (Navien product photo)
Navien NCB-H combi boiler, the wall-hung unit that heats the house and makes the hot water, which SwiftPro installs in Northern Virginia homes (Navien product photo)

Boiler Recommendation

Cast Iron Boiler

On your chimney

A new Weil-McLain cast iron gas boiler, swapped onto your chimney.

The straightest swap for a house that already vents up the chimney.

We install Navien, Weil-McLain and Force
Eleven SwiftPro heating, cooling and plumbing technicians lined up in front of the company's wrapped service vans in Northern Virginia

SwiftPro Heating, Cooling & Plumbing

4.951,131 Reviews

Boiler repair and replacement for Northern Virginia homeowners

Estimate

Recommended
$9,900to $13,690Installed. Your exact price is written down at your house before any work.

15yrs @ 9.99%

$106/mo

8yrs @ 7.99%

$140/mo

60mo @ 0%

$165/mo

What moves it in the rangeA chimney liner, or rebuilt piping around the boiler, takes a job to the top.

Your Boiler Cast iron: a new cast iron gas boiler on your chimney, the straightest swap for an older house.High-efficiency: a condensing boiler that vents out the wall in white plastic pipe.Combi: a condensing boiler that also makes your hot water, from one wall-hung box.

Slide to compare a cast iron boiler, a high-efficiency one and a combi.

On your chimney
From $9,900
Cast IronHigh-EfficiencyCombi

Got a lower comparable quote? We’ll match or beat it.

Boiler Service

Boiler tune-upA system, regularly $99. The same price as a furnace tune-up.
$69
Boiler repairThe diagnostic finds the problem, and the repair is priced in writing before any work.
$99

24/7 emergency service. Often same-day, and we will tell you honestly when we can get there.

Free In-Home Visit

No obligation, and the visit is free. Schedule today 👇

Book Now

No obligation to book

Estimate is a range from SwiftPro’s own boiler replacements in Northern Virginia: a hot water boiler on natural gas or propane, installed. Your exact price is written down at your house before any work. We don’t work on steam boilers, oil boilers or radiant floor systems. Monthly payments are on the low end of the range, based on good credit.

SwiftPro HVAC specialist shaking hands with a homeowner at the front door before a free in-home measurement in Northern Virginia
SwiftPro Heating, Cooling and Plumbing service van
FREE

In-Home Boiler Visit

To confirm your quote and make sure everything is accurate, we’ll need about an hour to:

  • Look at your boiler, the venting and the piping
  • Find what’s wrong, or size the new one to the house
  • Write the price down before any work
  • Go over financing

Select Date & Time

To confirm your quote and make sure everything is accurate, book your free in-home visit.

Select Date & Time

October 2026
SunMonTueWedThuFriSat

Time zone

GMT-04:00 America/New_York (EDT)

Arrival time(Required)
A painted cast iron radiator in a Northern Virginia home, the heat emitter on a hydronic boiler system
FAQ

Frequently Asked Questions

Our boiler replacements run $9,900 to $16,500 installed. A cast iron boiler swapped on the chimney is the low end, $9,900 to $13,690, and a high-efficiency condensing or combi boiler lands at $12,782 to $16,500. A chimney liner, when one is needed, is on top. We write yours down at the house before any work.

No heat, a noise or a leak on a boiler under 20 years old is usually a part: a circulator pump, a zone valve, an expansion tank or the controls. The $99 diagnostic finds it and prices the repair in writing. Water coming out of the boiler’s own cast iron sections or heat exchanger is the leak that ends a boiler.

When the house’s hot water needs are modest and you want the water heater’s space back, yes. A big house with several showers running at once may do better with a heat-only boiler and its own water heater.

$69 a system, regularly $99, the same as a furnace tune-up. If it turns up a repair, you get the price in writing before any work, and you decide.

No. We work on hot water boilers, the kind that heat radiators or baseboard, on natural gas or propane, Navien combis included. If yours is steam, oil-fired or a radiant floor system, we’ll say so on the phone rather than send someone out.

Simple 3 Step Process

SwiftPro van parked outside a Northern Virginia home for a free HVAC measurement Step 1

Check & Size

Book a free visit so a tech can look at your boiler, the venting and the piping, and size the new one to the house, not to the old nameplate.

SwiftPro HVAC specialist going over system options with a homeowner beside the furnace Step 2

Plan & Budget

We lock in your price, go over financing, and tell you which boiler we’d put in and why.

A new Weil-McLain gas boiler installed by SwiftPro in a Northern Virginia basement, with copper near-boiler piping and a bank of Taco zone valves feeding the heating loops Step 3

Install & Relax

We put in the new boiler, fire it up and check the heat before we leave.

SwiftPro technicians standing in front of three SwiftPro vans with their equipment
WHY US

Trust us. Get it done right.

SwiftPro Heating, Cooling & Plumbing works on hot water boilers all over Northern Virginia, natural gas and propane, Navien combis included. A boiler is half heating system and half plumbing, and both of our teams come to your house.

We write the price down at your house before any work, finance it if you want, and tell you straight when a repair makes more sense than a new boiler.

Here’s What Our Customers Say

SwiftPro Heating, Cooling & Plumbing

1,131 Reviews
Elizabeth W.February 2025

…excellent service when my boiler needed to be replaced during the polar vortex. Alex Hittle came quickly, … 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.

Isaac K.September 2026

Replacement for my broken gas water boiler was professionally done and in a timely manner. The technicians knew exactly what they were doing.

Rachel G.September 2026

…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.

A SwiftPro boiler installation in a Northern Virginia utility room: the new Weil-McLain, its flue, the blue expansion tank and the rebuilt copper piping
Close view of a SwiftPro boiler installation in Northern Virginia showing the expansion tank, automatic air vent, fill valve and the vent connector into the chimney
An aging Peerless cast iron boiler in a Northern Virginia basement, chimney vented, on a SwiftPro service call
A gas conversion label on a Northern Virginia boiler showing a conversion date of January 1994, found by a SwiftPro technician on a service call

Boiler Photos

Boilers we’ve put in and worked on around Northern Virginia: a new Weil-McLain, its expansion tank and venting, and the older cast iron we find in basements here.

Get Started This Week!

Ready to get started? Book your appointment now.

Book Now
SwiftPro Heating, Cooling and Plumbing

© 2026 SwiftPro Heating, Cooling & Plumbing. All Rights Reserved.

Installed range

$9,900 to $13,690

Book Now

Take the 1-minute quiz|Questions? (703) 997-9757

Call Now Book Online