LP gas furnace prices typically range from $2,500 to $8,500 installed, with many standard replacements averaging about $5,200. The final quote depends on furnace capacity and efficiency, venting and propane-line work, local labor rates, and whether the project involves a straightforward swap or changes to the heating system.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace equipment | $1,200 | $2,600 | $5,000 | LP-compatible, roughly 40,000-100,000 BTU |
| Standard installation | $1,300 | $2,600 | $4,000 | Removal and connection with typical access |
| Installed replacement | $2,500 | $5,200 | $8,500 | Existing furnace and venting generally reused |
| High-efficiency or complex project | $6,000 | $8,500 | $12,000+ | May include vent, drain, duct, or propane-line changes |
What an LP gas furnace costs for a typical home
For a common replacement in a 1,500- to 2,500-square-foot home, an LP gas furnace and standard installation often total $3,500-$6,500. A basic, single-stage unit with a reusable vent and accessible connections may land near the low end. A larger furnace, variable-speed blower, or high-efficiency model can push the installed quote above $7,000.
Furnace capacity is measured in British thermal units per hour, or BTU/h. Smaller homes may need a unit near 40,000-60,000 BTU, while larger or less insulated homes may require 80,000-100,000 BTU or more. A contractor should size the equipment based on a heat-loss calculation rather than floor area alone.
A reasonable planning budget for a standard LP furnace replacement is about $4,000-$6,500. That assumes a midrange unit, ordinary access, no major duct repairs, and compatible venting. Quotes can be higher in high-wage markets or where an LP conversion kit, new flue, condensate drain, or propane piping is needed.
Assumptions: U.S. installed pricing for a residential replacement, standard materials, normal access, and no major structural or ductwork changes.
How equipment, labor, and vent work shape the quote
Contractors may present one bundled price or itemize equipment, installation, and related work. Comparing the line items helps reveal whether two quotes include the same furnace capacity, thermostat, removal, permit, and venting scope. The ranges below are common planning figures, not fixed national rates.
| Quote item | Typical range | Pricing basis | What it covers | Common cost trigger |
|---|---|---|---|---|
| LP furnace | $1,200-$5,000 | Per unit | Standard to premium equipment | Capacity, efficiency, blower type |
| Installation labor | $900-$2,400 | Per project | Disconnect, set, connect, startup | Access and scope changes |
| Venting and fittings | $150-$1,200 | Per project | Flue materials and connections | New vent route or vent type |
| Propane-line work | $150-$900 | Per project | Connection or line adjustments | Undersized or relocated piping |
| Permit and inspection | $50-$400 | Per permit | Local review where required | Jurisdiction and project rules |
| Removal and disposal | $75-$300 | Per unit | Haul-away of old furnace | Access or disposal requirements |
Installation labor commonly takes 6-10 hours for a direct replacement, but a crew may need more time when it must modify the vent, plenum, gas connection, or electrical wiring. A typical labor estimate can be checked with . At a loaded rate of $75-$150 per technician-hour, labor time and crew size explain a substantial share of the total.
Equipment is only part of the price; venting and connection work can materially change the installed total. Ask whether the quote includes removal, startup testing, permit fees, thermostat setup, and any LP-specific conversion parts. Also confirm whether the furnace is supplied configured for propane or needs a manufacturer-approved conversion kit.
How BTU capacity and AFUE change LP furnace pricing
Capacity and efficiency are two of the strongest equipment-price drivers. A basic 40,000-60,000 BTU furnace may cost $1,200-$2,500 for equipment, while an 80,000-100,000 BTU model commonly costs $2,000-$4,000. Premium, modulating equipment can exceed $5,000 before installation. Higher capacity is not automatically better; an oversized furnace can cycle frequently and may not heat evenly.
Annual Fuel Utilization Efficiency, or AFUE, measures how much fuel energy becomes useful heat. Standard-efficiency models around 80% AFUE often cost less upfront, at approximately $1,200-$2,800 for the furnace. High-efficiency models near 90%-98% AFUE may cost roughly $2,500-$5,000 for equipment and can require compatible venting and a condensate drain.
The upgrade economics depend on local propane prices, heating demand, and years of expected use. A higher-AFUE model may reduce fuel consumption, but the savings may not recover its extra purchase and installation cost quickly in a mild climate or lightly used home. Compare the installed price difference with estimated annual fuel savings, not just the efficiency percentage.
LP gas appliances need the correct burner orifices, regulator settings, and setup. Conversion work typically adds about $150-$500 when the manufacturer permits conversion and parts are readily available. If the unit is not approved for propane use, selecting a factory-configured LP model is generally the safer route.
A jump from 80% to 95% AFUE can add hundreds or thousands of dollars, especially when venting must change. Request the model number, input capacity, AFUE rating, and exact LP configuration on each estimate so equipment comparisons are like-for-like.
Which property conditions push an LP furnace estimate higher?
Existing vent type and location can create a major price difference. A direct replacement using a sound, code-compliant vent may require little more than reconnection. Changing from an older metal flue to a high-efficiency furnace’s sidewall PVC vent can add about $300-$1,500, depending on routing, wall access, and condensate disposal. Long or obstructed vent runs can increase labor and material expense.
Propane supply capacity matters as well. A furnace rated above 80,000 BTU/h may expose limitations in an existing line or regulator, particularly if a water heater, range, or other appliances share the supply. A line upgrade can cost $300-$1,500 or more depending on pipe length, diameter, trenching, and local code requirements. The propane tank itself is usually separate from the furnace purchase.
Duct condition can turn a replacement into a broader project. Minor plenum or transition changes may add $200-$700, while extensive duct sealing, resizing, or replacement can add $1,000-$5,000+. A furnace replacement does not automatically include repairs to return-air sizing, damaged ducts, or insulation; the estimate should identify those items separately.
Access and location also affect labor. A furnace in an open basement is generally easier to replace than one in a tight crawlspace, attic, or finished mechanical closet. Difficult removal, stairs, restricted work areas, or required protection of finished surfaces can add $200-$1,000 or more.
Venting, propane delivery capacity, and duct condition are frequent reasons a simple replacement quote grows. Ask the contractor to document any proposed upgrades and explain the code, safety, or performance issue each one addresses.
How much does the installation take, and what does labor include?
A basic replacement often takes one workday, with a two-person crew completing about 6-10 hours on site. Labor usually covers disconnecting and removing the old furnace, positioning the new unit, connecting fuel and electrical service, adapting transitions, and startup checks. A quote may also include cleanup and a walkthrough of basic operation.
Work that changes the vent route, propane line, drain, or duct transitions may take 1-2 days. Additional time can be needed when a permit inspection must be scheduled or when installers discover concealed damage. These delays do not always mean more labor charges, so the contract should state how change orders are priced.
In many U.S. markets, HVAC labor is effectively billed at about $75-$150 per technician-hour after overhead, although contractors typically quote a project price rather than an hourly invoice. Emergency or after-hours work can be 25%-75% more expensive than routine scheduling. A diagnostic visit for an existing furnace commonly costs $75-$200, sometimes credited toward approved repairs.
Ask for the expected crew size, working hours, and exclusions before comparing installation labor. A lower quote may omit removal, permit coordination, startup testing, or corrections to unsafe connections. Confirm whether the installer will test combustion and verify proper operation on LP fuel.
How LP furnace prices vary by U.S. region
Installed prices can differ by roughly 10%-25% between lower- and higher-cost markets. Rural areas with fewer HVAC contractors may have higher travel or delivery charges, while large cities often have higher labor and permit costs. Climate and local fuel access can also affect which furnace models contractors commonly stock.
For a standard midrange replacement, a homeowner might see quotes around $3,500-$5,500 in lower-cost parts of the Midwest or South, $4,000-$6,500 in many suburban markets, and $5,000-$8,000 in high-cost coastal metros. These are broad planning bands, not regional price guarantees; home access, equipment availability, and scope can outweigh geography.
Rural projects may incur a $50-$250 trip or delivery charge when the contractor or supplier is far away. Urban jobs may have parking, elevator, or access constraints that add time. Comparing at least three local, itemized estimates is more informative than applying a national average to a specific home.
Local labor and access can move a furnace quote by hundreds or thousands of dollars. Compare offers from contractors serving the same area and verify that each includes the same capacity, efficiency, LP setup, venting, and disposal.
Three LP furnace replacement quotes for different homes
A small, easy-access replacement could involve a 50,000 BTU, 80% AFUE LP furnace in a 1,200-square-foot home. Equipment might cost $1,600-$2,200, while a two-person crew spends about 6 hours on removal and installation. With reused venting, minor fittings, and disposal, a realistic total is approximately $3,000-$4,300.
A typical 1,900-square-foot home might use a 70,000 BTU, 95% AFUE furnace with a new sidewall vent and condensate drain. Equipment could run $2,800-$4,000, labor and setup $1,500-$2,400, and vent materials and permit $400-$1,000. The project may total $4,700-$7,400, depending on access and routing.
A larger home with an 90,000 BTU furnace, propane-line adjustment, and duct transition work may receive a quote near $6,500-$10,000. Equipment could account for $3,000-$5,000, with labor, line modifications, venting, permit, and removal making up the rest. If the project requires extensive duct replacement or difficult attic access, costs can exceed that range.
These examples show why equipment specifications and included work matter more than a single advertised furnace price. The totals assume replacement of one furnace, not a new propane tank, major duct replacement, or whole-home heating redesign.
How to lower an LP furnace quote without cutting safety
Keep the scope focused on necessary work. Ask the contractor to separate required repairs from optional upgrades, such as a premium thermostat, extensive duct improvements, or add-on air treatment. Do not remove safety work simply to reduce the bid; instead, request the reason, code basis, and price for each repair.
Choose capacity based on a heat-loss calculation and compare equivalent models. Paying for an oversized furnace or a feature-rich control system that the home does not need may add cost without improving comfort. A standard single-stage furnace can be a sensible lower-price option when its output and efficiency match the home’s needs.
Schedule replacement before the existing furnace fails during peak winter demand. Routine installation may cost less and allow time to compare bids, while emergency service can carry rush charges and limit equipment choices. Ask whether the contractor can reuse sound venting and connections, but require confirmation that reuse complies with manufacturer instructions and local rules.
Get at least three written quotes and compare model numbers, labor scope, permits, removal, startup tests, and warranty terms. A price gap of $500-$1,000 may reflect different equipment or excluded work rather than a better deal. Confirm whether sales tax, delivery, and disposal are included, and request written approval before any added work begins.
The most reliable savings come from controlling scope and comparing equivalent, itemized bids. A lower upfront price should not depend on skipping LP setup checks, required permits, proper venting, or safe combustion testing.