Skip to content
ContractorsRanked

How much does a furnace replacement cost in Johnsburg, IL?

US national rangeUpdated Prices checked October 20261 source

A furnace replacement costs $2,823 to $6,896 nationally, typical $4,814. We have no documented price index for Johnsburg for this job, so this is the US national range from HomeAdvisor, checked October 2026.

US national range, not adjusted for this city

Low
$2,823
Typical
$4,814
High
$6,896

Get furnace replacement quotes in Johnsburg

Furnace replacement cost in Johnsburg, IL

We have no documented price index for Johnsburg for this job, so the table shows the US national range.

Furnace replacement cost in Johnsburg, IL
EstimateLowTypicalHighBasisChecked
US national range$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs (HomeAdvisor)October 2026

Furnace replacement cost by type or size

US national figures in USD, as published by each source.

Furnace replacement cost by type or size
Type or sizePrice (USD)Source
Electric furnace$2,000 to $7,000HomeAdvisor
Gas furnace$3,800 to $10,000HomeAdvisor
Oil furnace$6,750 to $10,000HomeAdvisor

What drives the cost of a furnace replacement

  1. Fuel type

    Electric furnaces cost least to install; oil costs the most.

  2. Efficiency rating

    High-AFUE furnaces cost more up front.

  3. Home size

    Furnaces are sized at roughly 30 to 60 BTUs per square foot.

  4. Climate

    Colder regions need more capacity.

  5. Removal of the old unit

    Removal and disposal typically add $150 to $330.

Permits and what's included in Johnsburg

Permit note

Furnace replacement usually needs a mechanical permit, and gas work may need its own. Ask your local building department for the fee.

Rules are set locally; confirm with Johnsburg’s building department.

What’s usually included

  • The new furnace
  • Connection to existing ducts, venting and fuel supply
  • Startup and testing

Scopes vary. Get the scope in writing on every quote.

Get furnace replacement quotes in Johnsburg

Tell us about the job and we will pass it to local pros. Asking for quotes never changes how we rank anyone.

Two short steps: your name, then how to reach you. Free, and it never changes anyone’s rank.

Top-ranked HVAC contractors in Johnsburg

The top 3 of 518 HVAC contractors we rank for Johnsburg, IL, by CR Score. Paid placement never changes rank.

  1. #1
    Black Diamond Plumbing & Mechanical Inc.
    CR Score 934.9from 6,580 Google reviews
  2. #2
    Command Service Center, INC
    CR Score 905.0from 745 Google reviews
  3. #3
    McHenry Heating & Air, Inc.
    CR Score 904.9from 596 Google reviews

See all ranked HVAC contractors in Johnsburg

Furnace replacement cost in Johnsburg: questions

How much does a furnace replacement cost in Johnsburg, IL?

A furnace replacement costs $2,823 to $6,896 nationally, typical $4,814. We have no documented price index for Johnsburg for this job, so this is the US national range from HomeAdvisor, checked October 2026.

Do I need a permit for a furnace replacement in Johnsburg?

Furnace replacement usually needs a mechanical permit, and gas work may need its own. Ask your local building department for the fee. Rules are set locally, so confirm with Johnsburg’s building department.

What affects the cost of a furnace replacement?

Fuel type: electric furnaces cost least to install; oil costs the most. Efficiency rating: high-AFUE furnaces cost more up front. Home size: furnaces are sized at roughly 30 to 60 BTUs per square foot. Climate: colder regions need more capacity.

How many HVAC contractors serve Johnsburg?

We rank 518 HVAC contractors for Johnsburg, IL by CR Score. Get at least three written quotes for the same scope.

What is usually included in the price?

The new furnace; Connection to existing ducts, venting and fuel supply; Startup and testing. Always get the scope in writing on the quote.

Sources

Checked October 2026. Figures are estimates, not quotes.

  1. HomeAdvisor: Furnace replacement cost · page updated June 17, 2026 · checked October 2026Primary source. Used for: Low, typical and high; prices by fuel; drivers.
These are published estimates, checked October 2026. They are not quotes. Typical range shown: $2,823 to $6,896. Editorial policy

Related pages

More cost guides for Johnsburg