Furnace Replacement Cost in Boone County (2026)

The most common question we get after a diagnosis is: "How much is a new furnace going to cost me?" It's a fair question, and the honest answer is that it depends on five variables — equipment size, efficiency rating, brand, installation complications, and permit requirements. What we can give you are real 2026 ranges for Boone County, Indiana, based on what we're actually quoting and installing right now.

Most Lebanon ranch homes — the 1,200 to 1,600 square foot single-story builds that make up a large share of the housing stock in Lebanon and the surrounding county — require a 60,000 to 80,000 BTU furnace at 2.5 to 4 tons of air movement. That sizing context matters because it anchors the price discussion. A Carmel two-story at 3,200 square feet has a very different cost than a Lebanon slab ranch, and quotes that don't start with a load calculation aren't worth the paper they're printed on.

What Drives Furnace Replacement Cost

Four factors control the price of a furnace replacement in Boone County:

• Equipment size (BTU) — A 60,000 BTU unit costs less than a 100,000 BTU unit. Oversizing to "be safe" drives up cost and causes short-cycling, which kills equipment faster.
• Efficiency (AFUE rating) — 80% AFUE units are simpler and cheaper to install. 96% AFUE units recover more heat from combustion but require PVC flue piping and a condensate drain.
• Brand and tier — Entry-level Goodman and value Carrier differ by $800–$1,200 in equipment cost. That gap is partially real and partially marketing.
• Installation complications — Gas line modifications, duct resizing, flue rerouting, and electrical upgrades all add to labor cost. A straightforward swap in an existing furnace closet is faster and cheaper than a first-time install in a utility room that was never properly set up.

80% AFUE vs 96% AFUE: Which Makes Sense in Indiana

Indiana sits in climate zone 5 — cold enough that heating costs are a real line item, not an afterthought. That makes the efficiency choice meaningful.

80% AFUE (Standard Efficiency)

A standard 80% furnace exhausts combustion gases through a metal B-vent flue through the roof or sidewall. Installation is simpler. The unit itself costs less. The tradeoff is that 20 cents of every gas dollar goes out the flue as exhaust heat. For a homeowner replacing a 20-year-old 80% unit in a house they're selling in three years, the 80% replacement often pencils out better.

96% AFUE (High Efficiency)

A 96%+ furnace (often called a condensing furnace) extracts so much heat from combustion that the exhaust is cool enough to vent through PVC pipe out a sidewall. It produces condensate that drains to a floor drain or pump. The equipment costs more, the install takes longer, and if the home doesn't already have a condensate drain run, that adds cost. For a family planning to stay in a Lebanon or Whitestown home for 10+ years, the monthly gas savings typically cover the cost difference in 5 to 8 years at current Indiana gas rates.

Real 2026 Installed Price Ranges in Boone County

These are complete installed prices — equipment, labor, permit, and standard materials:

• $4,500 – $6,500: 80% AFUE, single-stage, 60,000–80,000 BTU. Goodman or Airquest (Carrier's value line). Straightforward swap in existing location.
• $6,000 – $8,500: 96% AFUE, single-stage, 80,000 BTU. Carrier, Lennox, or Trane value tier. Includes new PVC flue and condensate drain if existing drain is nearby.
• $8,500 – $12,000: 96%+ AFUE, two-stage or modulating, variable-speed blower. Carrier Infinity, Lennox XC series, Trane XV. Includes full commissioning, zoning-compatible setup, and all associated install materials.

Quotes that come in significantly below $4,500 for a Lebanon install usually mean one of three things: unlicensed labor, no permit pulled, or equipment pulled from an irregular supply chain. We'll tell you which bracket your home falls into and why before we quote a number.

Brand Comparison

We install across multiple brands and have no financial incentive to push one over another. Here's the honest field view:

• Goodman / Airquest: Best value per BTU. Robust parts availability. Build quality is functional, not premium. Good choice when budget is the primary constraint.
• Carrier / Bryant: Mid-tier is reliable and well-supported in Indiana. Controls integration is strong for homeowners who want smart thermostat features. Bryant is Carrier under a different badge.
• Lennox: Premium build quality. The iComfort controls platform is genuinely good. Parts can be harder to source in rural Indiana — worth knowing if you're outside Lebanon or Zionsville.
• Trane: Durable compressors and heat exchangers. "It's hard to stop a Trane" is not entirely marketing — the heat exchangers hold up well. S-series is entry-level; XV-series is premium modulating.

Extra Costs to Budget For

The equipment and standard labor are only part of the picture. Budget for these separately if they apply:

• Boone County mechanical permit: Approximately $90–$120 for a residential HVAC mechanical permit through the Boone County Building Department or the Town of Lebanon. We pull the permit — it's our responsibility, not yours.
• Gas line modifications: If your existing gas line is undersized for a higher-capacity unit or needs to be rerouted, expect $150–$400 in additional materials and labor.
• Duct modifications: A furnace with a larger blower may require duct resizing to handle the increased static pressure. Common in older Lebanon homes where ductwork was undersized from the original install. Adds $200–$800 depending on scope.
• Old furnace removal and disposal: Included in most quotes from reputable contractors. If a quote you receive excludes this, ask specifically.
• Electrical circuit upgrade: Some high-efficiency variable-speed units require a dedicated 15-amp circuit if one isn't present. Uncommon, but worth checking in older Lebanon utility rooms.

Financing Options

We offer financing on qualifying furnace replacements. Net 15 payment terms are available for customers who prefer to pay after the job is verified complete. Ask about current financing when you call — rates and terms change, and we'd rather give you accurate information over the phone than publish numbers that go stale.

HVAC equipment may also qualify for federal energy efficiency tax credits under the Inflation Reduction Act for high-efficiency units (96%+ AFUE, Energy Star certified). A qualified tax preparer can advise on your specific eligibility.

How to Avoid Getting Overcharged

Three things protect you on a furnace replacement:

1. Get at least two itemized quotes. A quote that gives you a single number with no breakdown is not a quote — it's a number. Ask for equipment model number, labor cost, permit cost, and materials listed separately.
2. Verify the permit is pulled. Ask the contractor for the permit number before work starts. You can verify it with the Boone County Building Department or Town of Lebanon Building Office. Unpermitted work creates real problems at resale and voids most manufacturer warranties.
3. Don't let anyone quote you remotely without measuring. Furnace sizing requires at minimum a room-count walkthrough and a review of existing duct sizes. Any contractor quoting a number without setting foot in the house is guessing — and if they guess high, you pay for it for 20 years.

Call us at (765) 894-0047. We'll schedule a no-pressure estimate, pull the permit, and give you a flat-rate price before any work starts. No upsell, no commission-based tech on your doorstep.

Frequently Asked Questions