How Much Does It Cost to Replace a Gas Furnace in La Grange?

how much does it cost to replace a gas furnace

At JC Heating & Cooling, we offer competitive La Grange furnace replacement pricing, so reserve your appointment with us today. 

Heating repairs are a great way to keep your gas furnace running smoothly throughout the winter. Unfortunately, the best solution to a furnace issue may be to replace the system, but furnace replacement expenses can be high. If you live in Illinois, you might ask, “How much does it cost to replace a gas furnace in La Grange?”

Our HVAC experts at JC Heating & Cooling offer professional gas furnace installation in La Grange, Illinois at affordable rates. With our guide below, you can learn about the many factors that help determine the price of a gas furnace replacement. 

Warning Signs That Your Furnace Is Failing

Sometimes it can be tricky to know when to contact an HVAC professional to repair a malfunctioning furnace and when you must replace the system. Problems like dirty air filters and defective thermostats are simple fixes. However, you might need to get a new gas furnace if:

  • Your heating system frequently needs repairs
  • Your energy bills are skyrocketing
  • The cost of repairing the furnace exceeds the cost of replacing it
  • The pilot light has a yellow flame instead of a blue one, indicating low efficiency
  • The furnace keeps cycling on and off

A detailed inspection from a qualified heating system professional will tell you if it’s time to replace your gas furnace.

The Average Gas Furnace Replacement Cost

How much does it cost to replace a gas furnace in La Grange, Illinois? The cost of replacing a gas furnace will vary, but the national average is between $3,000 and $7,000. The heating system alone can cost between $700 to $2,800, but many factors go into the final cost, such as the furnace brand, labor, and furnace size. 

In general terms, the more work that goes into installing a furnace, the more you should expect to pay. However, financing and rebates can make a gas furnace replacement more affordable without requiring you to sacrifice your comfort or energy efficiency by installing a cheap system or hiring an inexperienced HVAC contractor.

For example, provisions in the 2022 Inflation Reduction Act include a 100% rebate worth up to $8,000 to install an electric heat pump. Reputable contractors may also offer discounts and specials to replace natural gas heating systems. 

Contributing Factors of Gas Furnace Replacement Expenses

The best way to understand how much you could pay for gas furnace replacement is to know what goes into the final cost. Here are some of the factors that go into furnace replacement costs. 

Furnace Type

If you prefer to heat your La Grange home with a gas furnace, you have several options to choose from. The greater the efficiency, the more you’ll likely pay to install it. Gas furnaces fall into these categories:

  • Single-Stage Furnace: These units have a single fixed heating output. They’re basic systems that won’t provide the best comfort and energy efficiency due to the single output level. On average, they cost between $3,000 to $4,000 to install. 
  • Two-Stage Furnace: This furnace type offers dual heating outputs, allowing the system to be more efficient. If you don’t require much heat, you can run the furnace at a lower level. Expenses for a two-stage gas furnace installation are about $4,000 to $5,000.
  • Modulating Furnace: The most efficient type of gas furnace is the modulating furnace. Though they are the most expensive option, costing between $5,000 and $7,000, you can adjust the heating output to create the ideal comfort level with outstanding efficiency. 

Furnace Size

The size of the furnace will also contribute to the replacement price. Sizing an HVAC system differs from other appliances because bigger doesn’t always mean better. Size in this context refers to heating capacity. 

You’ll need an experienced HVAC professional to assess your home and your heating needs. They’ll consider many factors to determine the correct size or capacity of your new furnace, including:

  • The property’s square footage (including ceiling height)
  • Home insulation
  • Number of windows
  • Air leakage
  • Local climate

Heating System Brand

Well-respected HVAC brands put a lot of work into ensuring the quality of their products. From research and development to extensive testing of high-quality materials, established brands tend to go above and beyond to produce long-lasting, durable products. As such, you’re likely to pay more for a name-brand furnace than you would for a lesser-known manufacturer. 


Though it might not cost as much to buy a gas furnace as you may expect, you can’t forget about labor costs. Depending on the HVAC company you hire for the job, labor costs could vary between $600 to $3,100 or more. Average hourly labor rates for experienced installers can range between $70 to $100 per hour, while assistants may garner a $30 to $50 hourly pay. 

The scope of the project will determine how many people the HVAC company will need to complete the furnace replacement. The job’s complexity will also determine how long it will take to complete the project — some furnace replacements can take over 15 hours! 

Other Expenses

If your home in La Grange has an existing furnace, there’ll be another charge of up to $400 to remove and dispose of it. It’s also illegal to replace or install a furnace without a permit and inspection, which could cost between $250 to $1,500.

Get the Most Out of Your New Gas Furnace with JC Heating & Cooling

If your furnace keeps shutting off or exhibiting another problem, you might ask yourself, “How much does it cost to replace a gas furnace in La Grange?” Fortunately, our team at JC Heating & Cooling makes the cost of replacing a gas furnace affordable to our customers in La Grange, Illinois and the surrounding areas. Our highly trained and certified team offers flat rate pricing to take the guesswork out of gas heating system replacements. 

At JC Heating & Cooling, your satisfaction is our top priority and guarantee. Contact us today at (708) 367-6720 to schedule a consultation.