Like-for-like replacement
Confirm the old size is still appropriate before matching it.
FORCED-AIR HEATING
Compare furnace replacement beyond the AFUE label
Fuel, venting, airflow, duct condition, controls and safety work determine whether a furnace proposal is truly complete.
Choose your route
Three ways to frame the project
Use the same home details and assumptions for every contractor so the proposals can be compared fairly.
High-efficiency upgrade
Review condensate, venting and installation changes.
Dual-fuel system
Coordinate a heat pump and furnace with clear changeover controls.
Installed scope
What a complete proposal should address
Not every item creates extra work, but every contractor should state whether it is included, excluded or not applicable.
- 01Heating load calculation
- 02Fuel supply and combustion safety
- 03Venting or flue work
- 04Blower and duct airflow
- 05Thermostat and controls
- 06Permit, startup and safety testing
Cost drivers
Why local installed prices vary
- Fuel and efficiency level
- Venting conversion
- Duct and filtration changes
- Gas or electrical work
- Access and code corrections
CoolCompare does not present a national sticker price as your project price. ZIP code, property conditions, code requirements and proposal scope must be evaluated together.
Ownership viewFuel Safety Maintenance 5/10 years
Compare 5- and 10-year cost
Compare local fuel prices with consistent weather assumptions.
Include combustion, venting and carbon-monoxide checks.
Budget filters and scheduled inspection.
Test a furnace-only path against heat-pump or dual-fuel alternatives.
Built for US homes
Your ZIP code changes the comparison.
Climate, utility rates, fuel availability, building codes, permit offices and incentive administrators vary across the United States. A national average is only an orientation point.
Heating and cooling loads, humidity control and equipment performance must match the home’s actual climate.
Use current electricity and fuel prices, rate structure and any demand-response or electrification program terms.
Ask who obtains permits, schedules inspections and documents required electrical, mechanical or structural work.
Check the installation year, ZIP code, system tier, income rules, funding status and official reservation process.
Quote checklist
Ask every bidder for the same six items
Comparable documentation makes price differences easier to understand and reduces hidden-scope surprises.
- 01Documented heat loss
- 02Exact model and efficiency
- 03Venting and condensate scope
- 04Airflow measurement
- 05Safety and permit work
- 06Parts and labor coverage
Official guidance
Verify the fundamentals
Incentives and eligibility can change by year, state, utility and system. Confirm current requirements before signing or purchasing.
US project questions
Answers to use before requesting bids
What should be included in a compare furnace replacement beyond the afue label quote?+
The quote should identify the exact equipment or materials, installation scope, permits, electrical or fuel work, commissioning, exclusions, schedule, payment terms and separate labor and product warranties.
How should I compare furnaces contractors?+
Give each contractor the same home details and ask for an itemized scope. Compare credentials, measurements, assumptions, cash price, financing, warranty and post-installation verification—not the headline price alone.
Can incentives reduce the project cost?+
Federal, state, Tribal, local and utility programs can differ by installation year, ZIP code, equipment tier, income and funding status. Verify eligibility with the official program administrator before signing or spending.
YOUR NEXT STEP
Start with ZIP code →