A new furnace in Indiana typically costs $3,500-$7,500 installed, with many standard gas-furnace replacements near $5,300. The final price depends on furnace size and efficiency, installation complexity, local labor rates, and whether the project needs ductwork or code updates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed gas furnace | $3,500 | $5,300 | $11,000 | Replacement; premium equipment or added work raises price |
| Equipment only | $1,200 | $2,500 | $5,000 | Furnace price before installation |
| Installation labor | $1,000 | $1,800 | $3,500 | More for difficult access or system changes |
| Annual fuel utilization efficiency | 80% AFUE | 96% AFUE | 98% AFUE | Higher efficiency usually costs more upfront |
What Indiana homeowners pay for a gas furnace replacement
A straightforward replacement of a standard gas furnace in an accessible home generally runs $3,500-$7,500, including equipment, removal of the old unit, and installation. A common midrange quote is about $5,300 for a 60,000- to 80,000-BTU furnace with 90%-96% AFUE and no major duct or vent changes.
For a like-for-like replacement, budget around $4,000-$6,500 before unusual repairs or premium upgrades. Small homes may need a lower-capacity unit, while larger or poorly insulated homes can require more capacity. A contractor should size the furnace using a heat-loss calculation rather than simply matching the old unit.
Assumptions: Indiana labor market, standard gas furnace, normal access, existing compatible ductwork and venting.
How equipment, removal, and labor shape the quote
Quotes may bundle equipment and labor, so homeowners should ask for an itemized estimate. The ranges below describe common line items; costs can overlap when a contractor quotes a complete installed system.
| Quote item | Typical price | What changes the charge |
|---|---|---|
| Furnace equipment | $1,200-$5,000 | Capacity, brand, staging, and AFUE rating |
| Installation labor | $1,000-$3,500 | Access, venting, electrical work, and job duration |
| Old-unit removal | $100-$400 | Disposal requirements and access to the furnace |
| Thermostat or controls | $100-$700 | Basic replacement versus communicating controls |
| Permits and inspection | $50-$300 | Local requirements and project scope |
Equipment, skilled labor, and any venting or electrical changes account for most of the total. Labor can be estimated as . A basic replacement may take 6-10 hours, while a conversion or extensive modification can take 10-16 hours or more.
Why BTU capacity and AFUE rating move Indiana prices
Capacity and efficiency are two major price drivers. A 40,000- to 60,000-BTU furnace for a smaller, well-insulated home may cost less than a 100,000-BTU unit for a larger home. Higher capacity does not automatically improve comfort; an oversized furnace can cycle frequently and may waste energy.
An 80% AFUE furnace is often less expensive to buy but requires a suitable chimney or vent setup. A 90%-96% AFUE condensing model commonly costs more and needs PVC venting and a condensate drain. Moving from a basic 80% unit to a high-efficiency model can add roughly $800-$2,500 installed, depending on how much vent and drain work is needed.
Confirm the proposed BTU size, AFUE, venting plan, and warranty in writing before comparing totals. A quote for a 96% AFUE furnace is not directly comparable with one for an 80% model unless equipment and installation scope are both clear.
How long installation takes and when labor adds up
A standard replacement usually takes one workday, often 6-10 hours for a two-person crew. A new furnace installation where no compatible gas line, vent, thermostat wiring, or return-air connection exists can take longer and may require additional trades.
Indiana contractors commonly charge roughly $75-$150 per labor hour for service or separately billed work, though fixed-price installation bids are more typical. Difficult basement stairs, tight mechanical rooms, asbestos concerns, or a furnace located in an attic can add time and handling expense. Ask whether the estimate includes startup testing, thermostat setup, and removal of the old equipment.
Compare the included tasks and crew plan, not just the number of labor hours. The lowest bid may exclude commissioning or necessary vent corrections that appear later as change orders.
What ductwork, venting, and code updates can add
Existing ductwork that is leaky, undersized, or poorly connected can reduce comfort and may need repair. Minor sealing or transition work can add $200-$800; larger duct modifications often cost $1,000-$3,500. A full duct replacement is a separate project and can exceed $5,000, depending on home size and access.
Other possible charges include a new flue liner or PVC vent route, condensate pump, gas-line adjustment, electrical disconnect, or return-air improvement. These items can add a few hundred dollars each, while combined venting and utility changes may increase a furnace quote by $1,000-$2,500. Permit fees vary by Indiana municipality and should be listed or identified as excluded.
Request written approval before any work outside the quoted scope begins. The estimate should identify included disposal, permit handling, startup, and code-related corrections.
How Indiana location and winter scheduling affect furnace prices
Labor and contractor availability differ across the state. Quotes in the Indianapolis metro and other higher-demand urban markets may run about 5%-15% above comparable rural Indiana work; limited contractor availability or travel can narrow or reverse that difference. These are broad planning ranges, not fixed regional price rules.
Emergency replacement during a cold snap may cost more because of rush scheduling, overtime, or limited equipment choices. A planned replacement during a milder season can allow time to compare proposals, although seasonal discounts are not guaranteed. Ask whether a quoted price is firm and how long it remains valid.
For a fair comparison, obtain two or three written quotes for the same capacity, AFUE, venting scope, and warranty. Compare the total installed price, not an advertised equipment-only price.
Where homeowners can trim the furnace budget without cutting safety
Keeping compatible gas, electrical, vent, and duct connections can avoid conversion work. Choosing a correctly sized single-stage or two-stage model instead of premium communicating equipment may also reduce the initial bill. A basic programmable thermostat can be adequate when a smart control is not needed.
Homeowners can clear access to the furnace and provide accurate details about the existing system before the estimate, reducing surprises. They should not skip required permits, combustion testing, or safety checks to lower a bid. If the furnace has a failed component but the heat exchanger is sound and the unit is not near the end of its service life, compare a repair estimate with replacement before committing.
Control scope and compare equivalent proposals; avoid choosing by price alone. A lower upfront cost may not be the better value if it excludes venting work, startup testing, or a meaningful parts warranty.