How Much Does It Cost to Replace a Furnace in 2025?

According to Home Services website ANGI, the cost of changing furnace is about $ 4,800, but it can cost about $ 2,800 to $ 6,800. Your total cost will include installation costs and labor costs, as well as permits and duct installation or removal when needed.

Factors affecting the overall cost of furnace change include furnace type and heating capacity for your home size. The age of your current furnace and ductwork can also affect the final bill. The furnace average lasts about 20 20 years, and the older ductwork is not compatible with a new unit.

The furnace comes in five main types, which have different cost limits and features. Your options are:

Natural gas furnaces are the most common. More energy efficient natural gas models may cost high but you can save money under the road.

Cost of furnace from home size

Forti is available in various heating capabilities, measured in British thermal units (BTUS). A BTU represents the amount of temperature required to increase one pound of water temperature to a degree Fahrenheit.

Your home will need a furnace with a capacity of 30 to 60 btus per square feet, with a home in the cold climate at the upper end. If your home is old or not well insulated, you may also need more BTU capacity, your windows are not energy efficient, or your furnace is not energy efficient.

Here are some sampling house size through square feet, BTU recommends heating the house and the cost of the furnace with this capacity:

Labor cost for furnace change

For a standard furnace installation, which can take four to 10 hours, expect the labor costs about $ 75 to 100 hours per hour. The following labor costs can increase:

• Removing your current furnace The additional $ 60 to $ 330 can cost.

• Installing a new ductwork It can cost about $ 2,000 to $ 5,000. The old ductwork is not compatible with new furnaces. Usually the change takes five to seven hours, and you can expect to cost more than half.

• Obtaining a permit It can cost $ 400 to $ 1,500 and may be required in some areas. Your furnace installer will receive the necessary permits, and the cost may be included in the reference to your contractor.

Indicators you need to change your furnace

The furnace usually lasts for 15 to 20 years, but some types can stay with proper care for 30 years. Old furnace is less energy -efficient, which can increase your monthly energy costs, and it can be a high risk of dangerous carbon monoxide leaks.

Here are the signs that now is the time to change your furnace:

• Your energy bills are growing.

• Your furnace is often broken and requires repeated repairs.

• Your home, or some rooms, are not warm.

• Dust and mascara are getting ready in your home.

• The furnace is bringing strange sounds, which includes poping, screaming and confusion.

• The smell of furnace is coming. The smell of the egg is a sign that the furnace is developing carbon monoxide.

• Flames are yellow instead of blue. It may be a sign that the furnace is developing carbon monoxide.