What Is The Average Cost Of A Furnace Installation In Minooka, IL?
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A new gas furnace installed in a Minooka home typically costs $4,000 to $8,500, including the furnace, labor, venting connections and startup. Where your project lands in that range comes down to three things: the efficiency you choose, the size of your home, and what your ductwork and venting need.
For a range built around your own home, try our furnace installation cost calculator. It takes about a minute and shows good, better and best options side by side.
Furnace Installation Cost In Minooka, IL: Good, Better & Best
These are typical installed prices for a gas furnace replacement in an average size Minooka home with ductwork in good shape.
| Option | What you get | Typical installed cost |
|---|---|---|
| Good | 80% AFUE single-stage gas furnace. The lowest upfront cost, and a good fit when the home has a standard chimney vent and you plan to move in a few years. | $4,000 to $5,500 |
| Better | 96% AFUE two-stage gas furnace. Runs on low most of the winter, so rooms stay more even and the furnace runs quieter, with lower gas bills than an 80% model. | $5,500 to $7,000 |
| Best | 97%+ AFUE modulating gas furnace with a variable-speed blower. Adjusts its output in small steps for the most even heat and the lowest gas use. | $7,000 to $8,500 |
Replacing the air conditioner at the same time is common when both systems are 12 or more years old. An AC and furnace replacement together typically runs $9,000 to $16,000, with one crew and matched equipment. See our AC installation cost calculator for that range.
What Changes The Price Of A New Furnace
Home Size & Heat Loss
A furnace is sized to how much heat your home loses on the coldest days, not just its square footage. Insulation, windows and basement layout all play a part. An oversized furnace short-cycles, wears out sooner and leaves rooms uneven, so our technicians size every furnace to the house before recommending one.
Efficiency & Venting
High-efficiency furnaces (90% AFUE and up) vent through PVC pipe and need a condensate drain. If your current furnace is an 80% model vented into a chimney, moving to a 96% furnace adds new venting and a drain line, which is part of the price difference between the good and better options.
Ductwork Condition
Leaky or undersized ducts waste heat you pay for. Sealing a few joints adds little to the project, while replacing sections of ductwork can add $1,000 or more. We look at the ducts during the in-home estimate so the price you approve already covers them.
Access & Gas Line
A furnace in a tight crawlspace or attic takes longer to install than one in an open basement, and an older gas line may need updating to meet code for a new furnace.
Permits, Rebates & Financing In Minooka
Minooka’s adopted building code requires a permit to replace a furnace, and the Village adds heating load calculations to the permit application. Those calculations are also how we size the new furnace. Ask us about the permit when we quote your installation.
Nicor Gas, which serves Minooka homes, pays a $150 rebate on furnaces rated 95% AFUE or higher and $225 at 97% AFUE or higher for 2026 installs, with $25 more when a qualifying smart thermostat goes on the same application. That brings the better option down by $150 and the best option by $225. The application is due within 90 days of the install.
EZ Air also offers financing for new furnaces, so you can spread the cost of a new system over monthly payments.
Should You Replace Your Furnace Or Repair It?
If your furnace is under 12 years old and the repair is a part like an igniter, flame sensor or inducer motor, a repair usually makes sense. If the furnace is 15 years or older, needs a heat exchanger or a control board, or has needed several repairs in recent winters, the money is usually better spent on a new furnace. Our technicians give you both prices so you can compare them. Start with furnace repair in Minooka or read more about furnace installation in Minooka.
Why Minooka Homeowners Choose EZ Air For Furnace Installation
- Serving Grundy County since 1984, from our shop on Cemetery Road in Morris.
- Installations done by our own trained technicians, not subcontractors.
- Free in-home estimates, with the price confirmed in writing before any work begins.
- More than 260 five star Google reviews.
- Furnace tune-ups after the install through the EZ Air Comfort Club.
See every furnace service we offer in Minooka, or all of our HVAC services in Minooka.
Questions We Get Asked About Furnace Installation Costs
How much does a new furnace cost in Minooka, IL?
Most gas furnace replacements in Minooka cost $4,000 to $8,500 installed. An 80% AFUE single-stage furnace sits at the low end, a 96% two-stage furnace in the middle, and a 97%+ modulating furnace at the top. Replacing the air conditioner at the same time typically brings the project to $9,000 to $16,000.
Is a 96% AFUE furnace worth it over an 80% furnace?
For most Minooka homes, yes. A 96% furnace uses about 16% less gas than an 80% furnace for the same heat, it qualifies for the $150 Nicor Gas rebate, and two-stage heating keeps rooms more even through the winter. An 80% furnace can still make sense if you plan to move soon or your chimney venting setup makes the switch expensive.
How long does a furnace installation take?
Most straightforward furnace replacements are finished in a single day. Changing from an 80% to a high-efficiency furnace, which needs new venting and a condensate drain, or adding ductwork can add time.
Does EZ Air offer financing on a new furnace?
Yes. EZ Air offers financing on new furnaces and full systems, with a simple application and no hard credit pull to check if you are pre-approved.
Is the furnace calculator price my final quote?
No. The calculator gives a planning range based on typical installations around Morris and Minooka. Your exact price is confirmed in writing at a free in-home estimate before any work begins.