How Much Does Boiler Replacement Cost in Washington, D.C.? [2025 Data]

Trying to estimate your boiler replacement costs in Washington, D.C.? On average, you’ll pay $4,339 for a new boiler in our nation’s capital. However, depending on the size of your house, the type of boiler, and other factors, you could spend between $2,454 and $6,723. To help you create an accurate budget, this guide breaks down the key cost factors for replacing a boiler in Washington, D.C.

Boiler Replacement Cost Factors 

The size of your Washington, D.C., home and the specifics of your boiler have a major impact on your overall costs. Here’s how they come into play.

Size

You can estimate the cost of your boiler by your home’s square footage and boiler capacity using the table below. However, call an HVAC pro in Washington, D.C., for the most accurate estimate.

Fuel Type

The most common fuels used for boilers in Washington, D.C., are natural gas, propane, and oil. The fuel type you choose will have a major impact on both your ongoing costs and how much you pay for a new boiler.

• Oil boiler: Oil burns hotter than gas, so oil boilers provide more heat and are better in colder climates. However, oil boilers require more maintenance than gas options, so keep things like long-term maintenance costs in mind before buying. 

• Gas and propane boiler: Propane and natural gas are common options for heating homes. In addition to the unit price, installation costs $1,000 to $3,000 and requires new exhaust lines, drains, and fuel lines.

• Electric: Electric boilers are highly efficient and don't require some of the components that gas and oil boilers need, like exhaust vents. They take a long time to heat up but are an attractive option for tiny homes in warm climates.

• Wood: Large, outdoor, wood-fueled boilers are good options for rural areas that have easy access to wood. 

System Type

Boilers are broken out by fuel type, but they can also vary in other ways—like their system types.

• Standard or conventional boilers: These boilers work by quickly heating water in pipes and sending it to your taps. Standard units are one of the most popular choices for homeowners in large homes and those with floor heating systems. 

• Combination boilers: Combination boilers are popular because they’ll give you access to hot water quickly. However, the supply tends to be limited due to the lack of a storage tank. 

• System boilers: These work by keeping high-pressure hot water in a sealed cylinder, where it can be sent to multiple taps within your home simultaneously. 

• High-efficiency boilers: High-efficiency boilers are up to 98% efficient, which accounts for thousands of dollars in savings over the boiler's life. Standard boilers are around 80% efficient, making them ideal for cold climates.

Climate Zone

The capacity of your boiler (in BTUs) depends on your region and climate. Warmer climates make it much easier to heat water, even for larger houses, so fewer BTUs are required. You can estimate your necessary BTUs by finding out which climate zone you live in.

HVAC Pro Costs

Beyond the price of the boiler itself, you should also weigh the costs of labor, permits, and sales tax in Washington, D.C. 

Licensing and Certification

Replacing a boiler isn’t a DIY job. If you aren’t experienced with heating and cooling systems, you could damage your boiler or HVAC system, cause a gas leak, or injure yourself while trying to install your own boiler. For those reasons, you should have a licensed HVAC pro in Washington, D.C., set up your new boiler.

When hiring for HVAC projects (including boiler installation), you might also want to look for a technician who’s certified by North American Technician Excellence (NATE). This leading nonprofit program certifies the skills and knowledge of professionals in the HVAC and refrigeration (HVACR) field. It’s a voluntary certification, so if your contractor has one, you know they’re committed to ongoing education, safety, and HVAC knowledge.

Permits

To “add, replace, remodel or repair fuel-burning or unfired pressure vessel equipment such as furnaces or boilers” in Washington, D.C., you’ll need a boiler permit from the District’s Department of Buildings (DOB). Permit costs depend on the size of your boiler and your home’s square footage, but you should see the costs listed in your contractor’s quote.

Sales Tax

The sales tax rate in Washington, D.C., is 6%, which can increase the cost of your boiler or other materials purchased in the District. For example, on a $3,500 boiler, you’d owe $210 in taxes.

Does Boiler Replacement Increase Home Value?

During Washington, D.C.’s, frigid winters, a home heating system is a must-have, so if your boiler is on its last legs, you should consider replacing it. 

However, installing a new boiler doesn’t just keep you comfortable and safe through the coldest months of the year. If you decide to sell your house, an upgraded boiler can appeal to interested buyers and increase your home’s resale value. In fact, when combined with a new cooling unit, an updated HVAC system can bump up your property’s value by 5% to 7%.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.