A new furnace costs between $4,000 and $8,000 on average, including the unit and professional installation. Prices typically range from $2,800 to $10,000+ depending on your home's size, fuel type, and system efficiency.
The national average cost for replacing a gas furnace in the U.S. for a 1,600 to 2,000-square-foot home is about $7,000. However, the cost of furnaces can range widely depending on their size, type, and efficiency, and homeowners can generally expect a new furnace to cost anywhere between $3,800 and $10,000.
Yes, you should highly consider replacing a 30-year-old furnace. Most furnaces have a lifespan of 15 to 20 years. At 30 years old, your system has likely outlived its expected life. It is operating at a much lower efficiency than modern units and presents a significantly increased risk of catastrophic breakdown or dangerous carbon monoxide leaks.
The $5,000 rule is a guideline to help homeowners decide whether to repair or replace their HVAC system. You multiply the age of your unit by the cost of the needed repair. If that number exceeds $5,000, replacing your HVAC system is often more cost-effective.
A standard residential furnace lasts 15 to 20 years. However, the exact lifespan varies based on the type of system and how well it is maintained.
5 Warning Signs It's Time for Furnace Replacement
The best time to buy a furnace is during the off-season, specifically late spring (April-May) or early autumn (September-October), when HVAC companies are less busy and offer lower prices, rebates, or promotions. Purchasing in these shoulder seasons ensures faster installation times and better negotiating power compared to winter peak season.
How Do I Claim a New Furnace on My Taxes? As a homeowner, you can claim a credit on your energy-efficient furnace by filling out Form 1040 (or 1040NR for non-resident aliens). To determine your credit amount, complete the Residential Energy Credits Form 5695.
The heat exchanger is often considered the most costly part of a furnace to repair or replace. It is a critical component that transfers heat from the combustion process to the air that circulates throughout your home. Over time, heat exchangers can crack due to the constant heating and cooling cycles they undergo.
Yes, you can replace just your furnace without replacing your AC. Knowing whether you should look at a furnace replacement only or AC replacement only, or both at the same time depends on many variables, and we will look at reasons for and against the question.
Yes HVAC prices have steadily increased over the past few years, and 2026 is no exception. These increases are affecting everything from entry-level systems to high-efficiency units, making it more expensive than ever to install or replace HVAC systems.
You know it is time to replace your furnace when it is over 15 to 20 years old, requires increasingly expensive repairs, or struggles to maintain consistent heating. Waiting for a total, freezing-weather breakdown leaves you with higher costs and limited options, so being proactive is crucial.
Yes, a new furnace increases home value, though it rarely yields a 100% dollar-for-dollar return on the installation cost. Rather than directly inflating the appraised price, it serves as a powerful negotiation and marketing tool.
The following are the most costly parts to fix or replace:
First of all, your furnace typically shouldn't need repairs if it's under 10 years old. But as your furnace nears the end of its life expectancy, it may not be cost-effective to repair it. In other words, if your furnace is approaching 20 years old, you'll likely need to replace it in the near future.
Legally, you can install a furnace yourself in most areas, but it requires specialized permits that are often restricted to licensed professionals. Because of the severe risks involving gas leaks, carbon monoxide, and electrical hazards, it is strongly recommended to hire a certified HVAC professional.
Most furnace issues stem from a few common culprits. The easiest to check yourself are clogged air filters and thermostat errors, which usually cause the system to blow cold air, run inefficiently, or cycle on and off constantly. Other frequent problems include dirty flame sensors or failing blower motors.
Since the cost to install an HVAC system can vary by system type and other factors, it's important to understand your financing options.
For the 2025–2028 tax years, individuals age 65 or older by the end of the tax year can claim an additional $6,000 deduction ($12,000 for married couples) under the "One, Big, Beautiful Bill". This deduction requires a Modified Adjusted Gross Income (MAGI) below $75,000 for individuals ($150,000 joint) and is available regardless of whether you itemize or take the standard deduction.
However, with the passage of the new budget, homeowners now have until the end of 2025 to take advantage of the HVAC tax credits, which include: $2,000 for a qualified heat pump. $600 for a qualified air conditioner. $600 for a qualified gas furnace.
The most overlooked tax break depends on your situation, but the Saver’s Credit (Retirement Savings Contributions Credit) and out-of-pocket charitable/medical expenses consistently top the list. These breaks reduce your tax bill dollar-for-dollar without requiring you to itemize.
You should probably Replace if: [ ] The repair costs more than 50% of a new unit. [ ] The furnace is over 15 years old. [ ] You have had to repair it more than once in the last 2 years.
Shop around. Getting competitive bids from several contractors will save you money. For large installation jobs, it's common for company-to-company price differences to exceed $1,500 for the same equipment and work. Even for smaller installation jobs, prices vary considerably.
Prices will only climb in 2026. If you have a major repair pending or your system barely made it through summer, getting a quote now will save you money. During the fall and winter, we offer up to 20% off new systems. A $12,000 system can look more like $10,500 with these savings.