How Much Does a New Furnace Cost in Baltimore? [2025 Data]

Not sure how much to budget for new furnace costs in Baltimore, Maryland? On average, homeowners here spend $4,920 on furnace installation, with most projects costing between $3,168 and $7,061. The amount you’ll pay depends on multiple factors, including the type and efficiency rating of your furnace. Here’s how to estimate your costs.

New Furnace Cost Factors in Baltimore

In Baltimore, furnace installation costs greatly depend on the specifics of the project. Here’s what to consider when budgeting for your new heating system.

Type of Furnace

In Baltimore, there are four main types of furnaces to consider: electric, gas, propane, and oil. In terms of up-front costs, electric models are the most affordable option. Natural gas furnaces (the most popular kind) cost slightly more than electric units, and oil furnaces are the priciest of the four.

Size of Furnace

The size of your furnace is another big cost factor. A furnace’s size is a reflection of its heat output (rather than its physical dimensions) and is measured in British Thermal Units (BTUs). The larger the furnace, the more heat it can generate—and the more it will cost. You can see the link between furnace size and price below: 

Not sure which size you need? An HVAC professional can calculate the right size furnace for your home based on its square footage, insulation, and other factors.

AFUE Rating

A furnace’s Annual Fuel Utilization Efficiency (AFUE) rating represents how efficiently it uses fuel. Furnaces with higher AFUE ratings convert more fuel into heat, so they’re less expensive to run and better for the environment. However, as efficiency ratings go up, so do furnace prices.

If you buy a high-efficiency furnace (which has an AFUE rating of at least 90%), it will often cost at least twice as much as a standard-efficiency model (with an AFUE rating of 80% to 89%). In Baltimore (and the rest of the U.S.), the minimum AFUE rating for new gas furnaces is 80%.

Ductwork Replacement

Like your furnace itself, your ductwork also needs replacing from time to time. If your HVAC installer sees that your air ducts are leaking, damaged, or inefficient, they’ll probably recommend installing new ductwork. In Baltimore, average ductwork replacement costs range from $458 to $1,699.

Furnace Removal

If you’re replacing an outdated furnace, your HVAC pro will often offer to remove and dispose of the old unit as part of their services. You can expect to spend a few hundred dollars on this.

HVAC Pro Costs in Baltimore

There are a few other factors that come into play when determining the cost of furnace installation in Baltimore, including labor and permits.

Licensing and Certification

In Baltimore, any type of electric, mechanical, or gas work—including furnace installation—requires a licensed contractor. Before hiring an HVAC pro in Baltimore, Maryland, make sure they have an active license from the Maryland Board of Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) Contractors.

While not legally required, it’s also smart to seek out a furnace installer with a North American Technician Excellence (NATE) certification. When a technician is NATE certified, it means they have several years of real-world HVAC experience under their belt and have completed a series of tests to verify their knowledge.

Permits

To change, install, or replace a furnace (or any other part of your HVAC system), you must have a permit from the City of Baltimore. Your contractor should obtain all required permits before any work begins.

Sales Tax

It might not make or break your budget, but you should still consider the city’s 6% sales tax when pricing out furnace installation in Baltimore. If you buy a $2,000 gas furnace, for example, you’d pay $120 in sales tax.

Does Installing a New Furnace Increase Home Value in Baltimore?

In Baltimore, a reliable heating system is a must-have. If you plan on selling soon, having a new furnace will make your property more appealing to potential buyers—and could help you earn more money from the sale.

From a buyer’s point of view, a home with a new heating system is especially enticing because it means they shouldn’t have to pay for a replacement for a decade (or more). And if it’s a high-efficiency furnace that could help them save on their utility bills, that’s even better.

Something else to consider: If your AC unit is around the same age as your furnace, it often makes sense to replace it when installing a new furnace. By upgrading both parts of your HVAC system, you could see a 5% to 7% rise in your home’s value.

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.