Furnace Price in 2026: What a New Furnace Really Costs (Installed)
- Adam Haas
- 4 days ago
- 7 min read
If you are pricing a new furnace, most homeowners land in a typical installed range of about $2,824 to $6,889. Real projects can run $3,800 to $10,000 once you factor in fuel type, efficiency, venting, permits, and ductwork. Propane furnace cost is often the widest spread, commonly $3,700 to $14,200 installed, because propane installs can turn into a venting and safety update project fast. If you are stuck choosing repair vs replacement, the simplest way to decide is to compare three numbers: the repair price, the furnace-only replacement price, and the long-term best-fit option.
Quick furnace price ranges (installed)
By fuel type
Electric furnace cost: $2,000 to $7,000
Natural gas furnace cost: $3,800 to $10,000
Oil furnace cost: $6,750 to $10,000
Propane furnace prices (installed): $3,700 to $14,200
By efficiency (AFUE)
80% AFUE (basic): $3,000 to $5,000
90% AFUE (high efficiency): $4,000 to $8,000
96%+ AFUE (ultra-high efficiency): $6,000 to $12,000
By home size (rule-of-thumb examples)
A lot of cost guides tie furnace sizing and pricing to home size. For a 2,500 sq ft home, it is common to see sizing guidance around 75,000 to 150,000 BTUs, with installed costs often shown in the $3,000 to $5,000 range for basic installs. In other guides, a 2,000 to 2,500 sq ft home is often shown closer to $6,000 to $9,000 because those totals commonly assume more real-world add-ons.
The takeaway: sizing matters, but install details are what usually move the price the most.
Furnace price by region (South Florida focus)
Furnace installation cost changes by region because labor rates, demand, and code requirements vary. Cold-climate markets often see higher demand and more furnace-specialized contractors. Warm-climate markets see fewer furnace replacements overall, and many homes are heat pumps or electric heat.
South Florida (Palm Beach, Broward, Miami-Dade)
In South Florida, furnace calls tend to spike after one of those cold fronts when a homeowner suddenly realizes the heat is not working. Because furnaces are less common here and many homes are electric, I usually see propane furnace pricing skew toward the higher end when venting, corrosion, or safety updates are involved.
Based on what I see on calls in Palm Beach County and nearby:
Propane furnace repair: commonly $300 to $1,800, depending on parts and whether the fix is simple or stacking multiple failures.
Propane furnace replacement (furnace-only swap): often $5,000 to $9,000 when permits, reconnect, startup, and small code fixes are part of the job.
Complex propane installs (venting, access issues, significant updates): can push $9,000+.
If you have a heat pump option, it is worth pricing too, because in South Florida the cooling side does most of the work year-round.
What drives furnace price the most
When two homeowners buy “the same furnace” and get wildly different totals, it is usually one of these:
1) Fuel type and infrastructure
Switching fuel types can add gas line work, venting changes, electrical updates, and inspection requirements. Staying with the same fuel and reusing safe infrastructure usually costs less.
2) Efficiency level (and what it changes)
High-efficiency furnaces can require different venting and condensate handling. You are not only paying for better efficiency, you are paying for a more complex installation.
3) Access and install complexity
A basement install is usually easier than a tight closet, attic platform, or cramped utility space. Access can add labor time, materials, and sometimes safety modifications.
4) Ductwork and airflow
If ducts are undersized, damaged, or poorly designed, a furnace swap may include duct repairs or airflow changes. That is a major reason furnace replacement cost can jump.
5) Permits, inspection, and code fixes
Even a “simple swap” often triggers permit and inspection requirements. Older installs may need updates to meet current safety expectations.
Propane furnace cost: the details most people miss
When someone searches propane furnace prices, they often expect a single number. In the real world, propane furnace cost is usually shaped by what is happening around the furnace, not just the furnace itself.
The biggest propane cost multipliers
Venting updates (sizing, materials, routing, termination location)
Combustion air issues (especially in closets and tight utility rooms)
Corrosion or rust near burners
Gas line sizing, shutoffs, regulators, and leak testing
Compatibility with the existing cooling side (controls and airflow)
In my market around Lake Worth Beach, a “propane furnace” call is usually not a standard cookie-cutter job. It often shows up in older custom homes, larger properties, or houses that already have a propane tank and a less-common heating setup.
Real-world example (how propane pricing actually plays out)
One call west of Wellington was a one-story ranch a little over 2,500 square feet with a split system: straight cool outside and a propane furnace inside, plus a buried propane tank already onsite. The furnace was around 18 years old and failed on the first real cold snap.
Once I opened it up, it was not one clean failure. The hot-surface igniter was weak, the burners were dirty, the inducer was inconsistent at startup, and I could see early rust starting around the burner compartment. That is the moment I tell homeowners what they do not see online: the “furnace price” is rarely just the box.
Propane safety and venting checklist (use this before you sign)
If you are replacing a propane furnace, I want to see these items clearly addressed in the written estimate:
Permit and inspection included
Venting type and sizing confirmed for the new unit
Combustion air plan included (especially for closets)
Carbon monoxide safety plan (detectors where required and strongly recommended even where not required)
Gas shutoff setup verified and accessible
Leak test performed and documented
Clearances and service access meet manufacturer requirements
Startup testing completed (burners, flame signal, draft, safeties)
Model and serial recorded for warranty registration
If you are installing a high-efficiency condensing furnace: condensate drain route or pump plan included
Sample quote comparison table (3 realistic examples)
These are sample numbers to help you compare line items. Your actual price will depend on your home, access, and code requirements.
Line item | Option A: Repair (buy time) | Option B: Replace (standard efficiency) | Option C: Replace (96%+ high efficiency) |
Diagnostic and safety check | $125 | Included | Included |
Parts (example: igniter, inducer, tune-up items) | $650 | N/A | N/A |
Labor | $600 | $1,600 | $2,200 |
New furnace equipment | N/A | $2,900 | $4,600 |
Venting and combustion-air updates | Minor cleanup | $450 | $1,350 |
Permit and inspection | N/A | $250 | $300 |
Thermostat or controls update | N/A | $200 | $350 |
Condensate drain or pump (if needed) | N/A | N/A | $350 |
Removal and disposal | N/A | $150 | $200 |
Estimated total | $1,375 | $5,550 | $9,350 |
Repair vs replacement: the “three prices” method
When a homeowner asks me “What’s the furnace price?” I answer with three numbers because that is how the decision really works:
Repair price: what it costs to make heat reliable again
Furnace-only replacement price: swap the furnace and keep the rest intact
Long-term best-fit price: what you should do if you plan to stay and want fewer problems
When repair is the smart move
Repair often makes sense when:
the furnace is not that old
the failure is limited to one or two clear components
the heat exchanger is healthy and the system is otherwise clean
you need one or two seasons before a bigger upgrade
In that Wellington-area propane call, a repair to replace the igniter, clean burners, and address the inducer would have landed around $1,300 to $1,700. It would have restored heat, but it would not have turned an 18-year-old furnace into a long-term plan.
When replacement is usually the better investment
Replacement usually wins when:
the unit is older and showing corrosion
repairs are piling up or becoming unpredictable
venting and safety updates are needed anyway
the repair estimate is a large chunk of the replacement cost
For that same home, a furnace-only replacement with permit, reconnect, startup, and the small code-related fixes the old install needed landed in the mid-$5,000s. That is why I say there are really three prices, not one.
How to get an accurate furnace quote (and compare bids fast)
Ask every contractor for a written estimate that includes:
brand and model number
fuel type and efficiency (AFUE)
what is happening to venting (reuse vs replace, materials, routing)
permits and inspection
scope for gas line work and leak testing (if gas or propane)
removal and disposal
thermostat or electrical changes
startup testing and commissioning steps
warranty terms (parts and labor)
Red flags
vague totals with no line items
“no permit needed” said casually without explanation
no mention of venting changes on older installs
no mention of combustion air on closet installs
no clear startup testing plan
How to save on furnace price without cutting corners
Replace in the off-season, typically spring or early summer, when demand is lower.
Get two to three bids and compare line items, not just the bottom number.
Pick efficiency that fits your climate and usage. If you barely run heat, ultra-high efficiency may not pay back like it does up north.
Fix the house first when it is practical. Air sealing and insulation can reduce the size you need and improve comfort immediately.
Furnace price FAQs
How much does a furnace cost installed?
A typical installed range is about $2,824 to $6,889, but many real projects land $3,800 to $10,000 depending on fuel type, venting, ductwork, and efficiency.
What is the average propane furnace cost?
Propane furnace prices often range $3,700 to $14,200 installed. The spread is wide because venting, safety updates, access, and gas line work can change the scope.
What do common furnace repairs cost?
Small repairs can be a few hundred dollars, but major component failures can add up quickly. Typical part ranges often look like:
flame sensor: $75 to $250
ignitor: $150 to $300
control board: $200 to $600
gas valve: $200 to $1,000
draft inducer motor: $200 to $1,500
blower motor: $400 to $1,500
heat exchanger: $500 to $1,500
What is the cheapest time of year to replace a furnace?
The cheapest window is usually spring or early summer, when HVAC demand is lower.
Bottom line
If you want a clean answer for furnace price, start here: $2,824 to $6,889 installed is a typical range, but real-world totals can run $3,800 to $10,000, and propane furnace cost can stretch much higher when venting and safety updates are involved. The fastest way to make the right call is to get line-item bids and use the three prices method so you are not forced into a rushed decision the first cold morning your system finally gets tested.
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