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How Much Does a Furnace Replacement Cost?

Author: Airling HVAC
Published: Friday February 23, 2024
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A furnace serves as a home's primary heat source, particularly crucial in regions with harsh winters. Installing a new furnace averages $4,700, with costs typically ranging from $2,800 to $6,800. However, several factors can influence the final cost for homeowners.

What Is a Furnace?

A furnace produces warm air, which is then circulated throughout a home via ducts and emerges from vents and radiators to heat the space. Typically located centrally in the home, such as in the basement, attic, or utility space, furnaces can last for over a decade with regular maintenance.

Factors That Affect Furnace Costs

Several factors contribute to the total cost of your furnace, including the type you select, its size, and additional considerations.


Furnaces, though operating similarly, vary in power source. The main types are electric, natural gas, and oil.

  • Electric: Installation costs range from $1,800 to $7,300, including the furnace. It uses heat coils to warm air, distributing it through vents and ducts. Electric furnaces are measured in kilowatts and are efficient but require substantial electricity, making them more common in milder climates.
  • Natural Gas: Installation costs typically range from $2,800 to $9,500, with higher costs for high-efficiency models. While initially more expensive, natural gas furnaces offer long-term utility savings. They're ideal for regions with cold winters, as natural gas heat feels warmer.
  • Oil: Common in the Northeast, oil furnaces cost between $4,500 and $8,000 or more to install. Oil is costly and less efficient than natural gas, requiring more maintenance and filter changes. However, oil furnaces are safer and can last up to a decade longer than gas furnaces with proper maintenance.


Similar to air conditioning systems, furnace size is measured in British Thermal Units (BTUs). A rough calculation for the appropriate BTUs for your space is to multiply the square footage by 40. For example, a 2,000-square-foot home would need about 80,000 BTUs, though more may be necessary for colder climates.

Furnace costs typically range from $2,000 to $3,000 for a 40,000 to 60,000 BTU unit, while larger homes up to 3,500 square feet may require a furnace costing around $7,000. Factors like cathedral ceilings or drafty windows may require higher BTUs for adequate heating.

Refer to the table below for estimated furnace replacement costs based on size. If unsure, consult a local furnace repair company for assistance.


Efficiency is crucial for home heating and cooling. A highly efficient furnace can significantly reduce monthly energy expenses. While high-efficiency furnaces may have higher initial costs, they often lead to long-term savings through lower energy bills.

To estimate potential energy savings, multiply the increased efficiency of your new appliance (expressed as a percentage) by your average monthly bill. For instance, if you upgrade to a furnace that's 25% more efficient than your current one, you could save 25% of your monthly bill.


There are many HVAC companies that produce furnaces for residential use. Your choice of brand can impact the cost of your new furnace. Your options will depend on the type of furnace you require and the availability in your area.

Is your furnace investment worth it?

Choosing to install a furnace of the same type is a more cost-effective option than converting from one type to another. Conversions might require moving the unit or modifying ductwork, increasing overall costs. However, installing a furnace provides significant benefits, improving energy efficiency and indoor air quality. These advantages result in utility savings and a healthier indoor environment.

The financial aspect of furnace installation can be made more manageable through several avenues. Financing options, rebates, and tax credits can significantly reduce the cost of installation.

While some may consider a do-it-yourself (DIY) approach to furnace installation as a cost-saving measure, it comes with its own set of challenges. Handling intricate tools, dealing with potentially hazardous elements like gas lines, and the risk of errors leading to expensive repairs make DIY installations less appealing. Opting for a professional technician is advisable, especially considering that installation mistakes can result in significant expenses. Additionally, many furnace warranties require professional installation, and attempting DIY could potentially void such warranties. Therefore, it's important to carefully consider the costs and benefits when deciding on furnace installation methods.


Looking for top-notch Heating and Air Conditioning services in San Bernardino, Highland, Fontana, Redlands, Rialto, Riverside, Moreno Valley, and Colton? AirLing HVAC Solutions is your go-to destination for expert installation, maintenance, and repair in Southern California. Our team specializes in guiding customers towards optimal system choices, ensuring the safe and precise installation of cutting-edge, high-efficiency AC units.

Experience the advantages of lower energy bills, minimized maintenance expenses, and enhanced indoor comfort and air quality with our services. At AirLing HVAC Solutions, we're dedicated to making HVAC system replacements affordable for you. Explore our in-house financing options featuring low-interest rates and budget-friendly monthly payments for new units and major repairs.

Ready to transform your HVAC experience? Reach out to us at (909) 787-1555 to apply for financing or request a quote today. Discover unparalleled Heating and Air Conditioning solutions right here, near you!

We serve the areas of San Bernardino, Highland, Fontana, Redlands, Rialto, Riverside, Moreno Valley and Colton, CA.


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