Ducted heating installation cost typically ranges from $4,000 to $12,000 for a new forced-air furnace and ductwork in a typical U.S. home, with an average near $7,500. The final price depends on system type and capacity, whether ducts already exist, home size, local labor rates, and electrical or venting work.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace replacement using existing ducts | $2,500 | $4,500 | $7,500 | Standard gas furnace, similar capacity |
| New furnace and ductwork | $4,000 | $7,500 | $12,000 | Typical 1,500-2,000 sq ft home |
| High-efficiency furnace installation | $4,500 | $7,500 | $11,000 | Equipment and venting affect price |
| Heat pump with ducted air handler | $6,000 | $10,000 | $16,000 | Heating and cooling equipment |
| Ductwork installation | $2,000 | $4,000 | $7,000 | Varies with access and duct length |
What a Typical Ducted Furnace Installation Includes
For a standard 1,500-2,000-square-foot home with accessible installation space, a complete gas furnace and new duct system commonly costs $6,000-$9,000. A reasonable planning average is about $7,500, including midrange equipment, basic controls, installation labor, and ordinary startup testing. Homes with usable ducts may pay substantially less because the project becomes an equipment replacement rather than a full system installation.
On a replacement using existing ductwork, expect roughly $2,500-$7,500, with many straightforward jobs landing around $4,500. A new duct network often adds $2,000-$7,000, or approximately $2-$5 per square foot of conditioned floor area. That unit rate is a broad estimating aid, not a fixed bid; concealed routes, multiple floors, and difficult access can raise it.
For budgeting, first establish whether the quote includes new ducts, removal, permits, and all required venting. A low equipment-only figure is not comparable to a complete installed price. Assumptions: midrange equipment, ordinary access, standard U.S. labor rates, and no major structural repairs.
How Equipment, Ducts, and Labor Shape the Quote
Installed prices usually combine equipment, trade labor, duct materials, and job-specific charges. The table gives typical ranges for a standard residential project; individual bids may group several items together. Ask the contractor to identify what is included rather than comparing only the furnace model or headline total.
| Quote component | Typical range | Pricing basis | What changes it |
|---|---|---|---|
| Furnace or air handler | $1,500-$4,500 | Per system | Capacity, efficiency, brand, and features |
| New ductwork and registers | $2,000-$7,000 | $2-$5 per sq ft | Run length, floors, materials, and access |
| Installation labor | $1,200-$3,500 | $75-$150 per crew hour | Crew size, removal, and project complexity |
| Venting, controls, and electrical work | $300-$1,500 | Per project | New exhaust route, thermostat, circuit needs |
| Permits and inspection | $100-$500 | Per project | City, county, and scope of work |
| Removal and disposal | $150-$600 | Per old unit | Access, hazardous materials, and disposal fees |
These items can overlap in a contractor’s price. For example, a ductwork line may already include registers and installation, while a furnace package may include basic controls and startup. Confirm whether sales tax, permit fees, haul-away, and commissioning are included before comparing totals.
Why Home Size and Furnace Capacity Change Pricing
Capacity is often quoted in British thermal units per hour, or BTU/h. A smaller home might need a 40,000-60,000 BTU/h furnace, while a larger or leakier home may require 80,000-100,000 BTU/h or more. Bigger equipment can cost more, but capacity should be determined by a heat-loss calculation—not chosen solely by square footage or by matching an oversized old furnace.
Duct length and layout also matter. A 1,200-square-foot, single-story home with a short, open duct route may keep a new duct system near $2,000-$4,000. A 2,500-square-foot, two-story home requiring 250-350 linear feet of ducts, additional returns, and balancing may reach $5,000-$8,000 for ductwork alone.
Efficiency specifications influence both equipment price and installation details. A basic furnace around 80% AFUE may cost less upfront than a condensing model rated around 95%-98% AFUE, which may require PVC venting and a condensate drain. Ask for the proposed capacity, AFUE rating, and duct design in writing. A high-efficiency rating does not guarantee lower bills if the system is oversized or poorly installed.
What Changes When Ducts Already Exist
Using existing ducts can save thousands, but only if they are correctly sized, sealed, and in serviceable condition. A straightforward furnace swap may take one day and cost $2,500-$5,500. Replacing an older unit with a different venting arrangement, adding a return, or correcting a restricted supply trunk can bring the total to $5,000-$8,000.
New construction or a home without central ductwork has a wider price range. Installing a furnace and ducts may run $6,000-$12,000 for a typical home; extensive remodeling or concealed duct routes can push the project above $15,000. Ducts routed through an unfinished basement or attic are generally less expensive to reach than ducts hidden behind finished walls and ceilings.
Before accepting a replacement quote, request an inspection of the existing plenum, return-air path, and duct leakage. A contractor may recommend sealing or limited repairs rather than full replacement. Reusing sound ducts is usually the largest opportunity to reduce an installation bill. If the ducts are badly undersized, damaged, or contaminated, keeping them can compromise comfort and system performance.
How U.S. Region and Home Access Affect Installed Prices
Labor availability, local code requirements, and cost of living create meaningful regional variation. A standard furnace replacement in a lower-cost Midwest or Southern market may come in about 10%-20% below the national average. Major coastal metros and high-cost Western cities can run 15%-30% above it, particularly when permits, parking, or specialist labor add time.
Climate changes the equipment choice as well as the labor quote. In colder northern areas, a high-efficiency gas furnace may be a common selection, while homes in milder regions may use a heat pump or dual-fuel system. A ducted heat pump installation often costs $6,000-$16,000, with higher-end cold-climate equipment and electrical upgrades affecting the total.
Physical access can add $300-$1,500 or more when installers must work in a cramped crawlspace, carry equipment up stairs, or open and repair finished ceilings. Request local bids using the same equipment capacity and work scope. A national range is useful for planning, but quotes from licensed contractors familiar with local inspection rules are more reliable for a specific home.
How Long Installation Takes and What Labor Covers
A basic furnace replacement generally takes 6-10 hours for a two-person crew when the existing unit and connections are accessible. Adding a new duct system can take 2-5 days, depending on the number of rooms, route complexity, and whether walls or ceilings need finishing. Labor often accounts for roughly $1,200-$3,500 of a standard project, although new duct installation can raise that portion.
Installation work may include removing the old unit, setting and connecting the new equipment, adapting gas or electrical connections, installing venting, connecting the thermostat, and testing airflow and safety controls. Some projects also require a licensed electrician or additional plumbing for condensate drainage. Ask whether repair of drywall, paint, or flooring is included; it is often excluded from HVAC bids.
Get a written scope that names the crew’s work and the final testing steps. A complete installation should address airflow, thermostat operation, combustion safety for gas equipment, and any required inspection. Scheduling during the busiest cold-weather period can also make appointment dates less flexible, even when the base labor rate is unchanged.
Which Add-On Charges Can Push the Total Higher
Common extra charges include $150-$600 for removal and disposal, $100-$500 for permits and inspections, and $200-$800 for a new thermostat or upgraded controls. A new electrical circuit or panel work may add $300-$2,000, depending on the existing service and local electrician rates. Gas-line modifications can add several hundred dollars or more if the line is undersized or needs rerouting.
For a high-efficiency furnace, new intake and exhaust piping and a condensate drain may add $300-$1,200 if they are not included in the equipment installation. Sealing or insulating accessible ducts may cost $500-$2,000, while extensive duct repairs can exceed that range. Mold remediation, asbestos handling, or major framing work requires separate evaluation and may substantially alter the project budget.
Check for minimum service charges and exclusions, especially when a quote is based on a quick site visit. Separate necessary code or safety upgrades from optional accessories. A contractor should explain why each added item is needed and whether it is required for safe operation, inspection approval, or improved comfort.
Three Realistic Quotes for Different Ducted Heating Jobs
These examples illustrate how scope changes the total. They are planning scenarios, not guaranteed local bids, and assume midrange equipment and ordinary working conditions. The labor figures represent crew time and do not include unrelated finish repairs.
| Home and scope | Equipment and ductwork | Labor estimate | Other charges | Estimated total |
|---|---|---|---|---|
| 1,400 sq ft, furnace replacement, usable ducts | $2,300-$3,400 | 8-10 crew hours, $1,000-$1,500 | $300-$700 | $3,600-$5,600 |
| 1,800 sq ft, new furnace and accessible ducts | $4,000-$6,000 | 2-3 days, $2,000-$3,000 | $400-$900 | $6,400-$9,900 |
| 2,400 sq ft, high-efficiency furnace, complex duct routes | $6,000-$9,000 | 3-5 days, $3,000-$4,500 | $800-$1,800 | $9,800-$15,300 |
The first scenario assumes no major venting or duct repairs. The second includes roughly 180-250 linear feet of accessible new ductwork at about $2-$5 per square foot of floor area. The third allows for longer runs, additional returns, higher-capacity equipment, and more demanding access. Compare estimates by matching scope, not by picking the lowest total alone.
Ways to Lower the Ducted Heating Bill Without Cutting Corners
Keep the existing duct system when an inspection confirms that it is adequately sized, sealed, and structurally sound. If only a few runs are damaged, ask for a repair price alongside a full replacement quote. Select furnace capacity from a documented load calculation; oversizing to create a safety margin can increase equipment cost and lead to short cycling.
Compare at least three itemized quotes with the same capacity, efficiency level, thermostat, venting, permit allowance, and removal scope. A price difference of $1,000 or more may reflect different duct assumptions or omitted work rather than a better deal. Ask whether a less expensive 80% AFUE unit is allowed and practical in the home, or whether a high-efficiency model’s venting and operating savings justify its higher initial price.
Plan work before equipment failure if possible, giving time to compare bids and avoid emergency scheduling. Handle simple access preparation, such as clearing the furnace area, but leave gas, electrical, and refrigerant work to qualified tradespeople. The most dependable savings come from controlling scope and avoiding unnecessary upgrades—not from skipping safety checks. Review the labor warranty, parts warranty, and required maintenance conditions in the written proposal.