Cost to Install a Furnace

You’re planning for your new furnace and realize you have no idea what your budget should be. A new furnace installation usually ranges between $4,000 and $8,000, but your final price will depend on a few factors.
Keep reading for a more complete breakdown on everything there is to know about furnace installation pricing, including:
Having pricing information will be valuable so you know what to expect when you gather quotes (and can spot when someone is ripping you off) and can budget accordingly.
Key Takeaways:
- Homeowners can expect to pay between $4,000 and $8,000 for a new furnace installation.
- Several factors can impact your final furnace installation cost, including the furnace size, type (oil, electric, or gas), existing ductwork condition, and add-ons.
- If your furnace is less than 10 years old, still working optimally, and only needs a minor repair, a repair might be the better option over replacement.
Get a Precise Furnace Installation Quote from Michael & Son
If you need furnace installation, look no further than the experts at Michael & Son. We have decades of experience, hire only the most experienced technicians, and offer high-quality personalized service. Contact us now, and we’ll be on the way!
Average Furnace Installation Cost Range
A new furnace installation typically ranges between $4,000 and $8,000, depending on system type and efficiency. This total is an all-inclusive number, including the new furnace, labor, removal of the old unit, and minor ductwork adjustments.
High-efficiency models may cost more upfront but offer lower long-term operating costs due to reduced energy usage.
Here are some average examples of price tiers:
- Basic single-stage units: $4,000–$5,500
- Mid-range two-stage units: $5,500–$7,000
- High-efficiency variable-speed systems: $7,000–$9,000+
Factors That Affect Furnace Installation Cost
Several key factors influence total installation price, such as:
- System size and BTU rating. Larger homes require more powerful, sizable furnaces.
- Fuel type. Gas, electric, and oil furnaces each vary in material and installation cost. An electric furnace is the most affordable, gas is the mid-range, and oil is the most expensive.
- Energy efficiency rating (AFUE). Higher-efficiency units cost more up front but save money over time.
- Existing ductwork condition. Leaky or outdated ducts may need sealing or replacement. This will require additional labor, which can increase overall costs.
- Labor and local permitting costs. Installation complexity and local code requirements affect the final bill.
- Add-ons and upgrades. Smart thermostats, zoning systems, and humidifiers can increase overall cost. These add-ons are usually optional and aren’t mandatory for those who are on a budget.
Gas vs. Electric Furnace Pricing
Gas and electric furnaces are the two most common furnace types in South Carolina, so you’ll likely be picking between these two. Note that these two options can differ greatly in initial cost, maintenance, and efficiency.
Gas furnaces:
- More common and efficient for colder climates
- Cost: $4,500–$8,000
- Require venting and gas line connections
Electric furnaces:
- Ideal for smaller homes or mild climates
- Cost: $3,500–$6,000
- Easier installation and lower maintenance, but higher long-term energy bills
Luckily, you don’t have to guess when it comes to such a big decision. The technicians at Michael & Son can evaluate which system best fits your home’s size, comfort goals, and utility costs.
When Repair Makes Sense vs. When Replacement Is Smarter
You don’t always have to jump to furnace replacement if a repair makes more sense. Here’s how homeowners can decide between repairing an older furnace and replacing it:
Repair may make sense when:
- The furnace is under 10 years old
- Repairs cost less than one-third of a replacement
- Efficiency is still reasonable, and no major safety concerns exist
Replacement is usually smarter when:
- The furnace is 12-15 years old or older
- It requires frequent repairs or produces uneven heat
- Energy bills have noticeably increased
- The heat exchanger or major components are damaged
Of course, upgrading to a new, energy-efficient model provides better comfort and reliability, often with rebate opportunities. A furnace replacement is an investment that you’ll benefit from for many years to come.
How to Get an Accurate Quote From Michael & Son
Michael & Son provides in-home evaluations to determine the exact cost based on size, ductwork, and efficiency preferences. We don’t just do guesswork over the phone and give you a wide range estimate. Our customers want transparent pricing so they can budget properly.
Our technicians assess airflow, insulation, and square footage before recommending the right furnace type.
A professional installation ensures manufacturer warranty coverage and optimal performance.
Schedule a free or low-cost estimate to get a detailed quote today.
Stay Warm and Save More with Michael & Son
Book your furnace installation today with Michael & Son. Our experienced technicians offer same-day service so we can be there when you need us. And you’ll always receive upfront, transparent pricing with our in-home evaluations.
This blog was written on Dec 15, 2025. Any pricing information is subject to change.

