ENERGY STAR furnace prices typically range from $3,000 to $7,500 installed, with many standard replacements averaging about $5,000. The final quote depends on furnace capacity and efficiency, local labor rates, venting and ductwork needs, and whether the old unit must be removed or the system reconfigured.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace equipment only | $1,000 | $2,300 | $4,500 | Gas furnace; price varies by capacity and controls |
| Installed replacement | $3,000 | $5,000 | $7,500 | Standard access and limited system changes |
| High-efficiency or complex installation | $6,000 | $8,500 | $12,000+ | May include advanced controls, venting, or ductwork |
| Typical labor charge | $800 | $1,500 | $3,000 | Varies with crew time and installation scope |
What an ENERGY STAR Furnace Installation Usually Costs
For a like-for-like gas furnace replacement in an average U.S. home, a reasonable planning range is $3,000-$7,500 installed. A common midrange quote is around $5,000, including a qualifying furnace, standard removal, basic connections, and startup testing. Equipment-only prices are often $1,000-$4,500, but buying the furnace separately does not include professional installation or warranty requirements tied to correct setup.
Most routine replacements land near $4,000-$6,500 when the existing ductwork, gas line, and vent route can be reused. The lower end generally assumes a smaller home, straightforward access, and a basic single-stage unit. A larger home, premium variable-speed blower, difficult access, or code-related changes can push the total above $8,000.
ENERGY STAR is a performance certification, not a price grade. In the United States, certified residential gas furnaces generally meet an AFUE threshold of at least 95%; qualifying oil furnaces generally meet at least 85% AFUE. Models, requirements, and regional availability can change, so buyers should confirm the specific model’s current certification rather than relying on an advertisement that says “high efficiency.”
Assumptions: Gas furnace replacement, standard residential access, existing ductwork in usable condition, and ordinary U.S. labor rates.
How Equipment, Labor, and Venting Shape the Quote
A furnace estimate combines the unit price with skilled installation and any changes required to make the new system operate safely. A low equipment price can still produce a high installed total if the job requires new PVC venting, condensate drainage, electrical work, or duct transitions. Ask for the quote to separate the furnace from installation and other work.
| Quote component | Typical price | What it covers | Common cost trigger |
|---|---|---|---|
| ENERGY STAR furnace | $1,000-$4,500 per unit | Gas furnace, commonly 40,000-100,000 BTU input | Higher capacity or variable-speed equipment |
| Installation labor | $800-$3,000 per job | Removal, placement, connections, testing | Restricted access or extensive conversion work |
| Venting and condensate | $250-$1,200 | Pipe, fittings, drain routing, and termination | New route or long vent distance |
| Permit and inspection | $50-$500 | Local permit and required inspection | Municipal fee schedule and project rules |
| Removal and disposal | $100-$500 | Old furnace disconnection and haul-away | Heavy equipment or difficult removal |
| Duct or electrical changes | $200-$2,000+ | Transitions, wiring, or limited repairs | Damaged ducts or incompatible connections |
Request itemized prices for the furnace, labor, venting, permits, and disposal before comparing bids. A two-person crew working 6-10 hours at an effective labor rate of $75-$150 per worker-hour can account for a substantial part of a replacement quote; contractor pricing may also include insurance, overhead, and warranty administration.
How AFUE, BTU Capacity, and Duct Changes Move Price
Capacity should be based on a heating-load calculation, not simply copied from the old furnace. Common residential gas furnaces range from roughly 40,000 to 100,000 BTU per hour of input, but the correct size depends on insulation, climate, home layout, windows, and air leakage. An oversized unit may cost more while cycling inefficiently; an undersized unit may struggle during cold weather.
Efficiency and controls also affect the equipment budget. A basic single-stage ENERGY STAR model often costs less than a two-stage or modulating furnace with a variable-speed blower. Depending on brand and size, choosing advanced controls can add roughly $500-$2,000 for equipment, and compatible thermostats or zoning changes may add more. AFUE ratings describe the share of fuel converted into usable heat; they do not guarantee a particular bill reduction.
Capacity, controls, and site changes can shift a quote by several thousand dollars even when both models carry the ENERGY STAR label. Venting is a particular consideration for high-efficiency gas furnaces: a condensing model commonly needs plastic exhaust piping and a condensate drain. A vent run over 30-50 feet, multiple elbows, or a drain location far from the furnace may require additional parts and labor.
Duct repairs can also change the project scope. Replacing a short transition may cost a few hundred dollars, while substantial duct sealing, resizing, or replacement can add $1,000-$5,000 or more. Ask the contractor to identify the specific problem and the measured amount of work rather than accepting a broad ductwork allowance.
What Midwest and Coastal Furnace Quotes Usually Include
Regional prices reflect wages, contractor demand, permit fees, and the home’s heating requirements. In high-cost coastal metros, installed furnace quotes can run about 10%-25% above a national midrange estimate. Rural areas may come in 5%-15% below a nearby large-city quote, but fewer available installers or longer travel distances can erase that difference.
Use regional percentages as a budgeting adjustment, not as a substitute for local written bids. A standard replacement that might be quoted at $4,500-$6,000 in a lower-cost market could reach $5,000-$7,500 in an expensive metro before unusual duct or vent work. Cold-climate homes may need a higher-capacity model, but properly sizing the furnace matters more than selecting a larger unit by default.
Labor and permitting can vary within the same state. Some municipalities require a mechanical permit and inspection, while others have different procedures or fees. In a condo or tightly packed urban neighborhood, carrying equipment through stairs or coordinating building access may also add labor. Confirm that the estimate lists local permit charges and any access-related fee.
How Long a Furnace Replacement Takes and Why It Matters
A straightforward replacement usually takes a two-person crew about 6-10 hours, often completed in one day. A conversion from an older furnace type, a new vent route, condensate-drain work, or duct modifications can extend the job to 1-2 days. The labor portion commonly falls around $800-$3,000, although regional rates and the amount of installation work make a single hourly comparison unreliable.
Compare the listed tasks and crew scope, not just the number of labor hours. A quote may include startup checks, combustion testing, thermostat setup, and removal; another may charge separately for those items. Ask whether labor is a fixed project price or based on time and materials, and whether the contractor will return if startup testing identifies an issue.
Scheduling can affect the price indirectly. During a severe cold snap, emergency replacement may be more expensive because of rush service, limited equipment availability, or after-hours labor. Planning a replacement before the furnace fails can allow time to compare models and schedule standard installation, though seasonal discounts are not guaranteed.
Three ENERGY STAR Furnace Quotes for Common Homes
These examples show how capacity and job scope affect installed totals. They are illustrative U.S. estimates, not fixed market prices, and assume professional installation with ordinary access. Permit fees and local tax treatment may differ by location.
| Home and scope | Equipment | Labor and extras | Estimated total |
|---|---|---|---|
| 1,200-sq-ft home, 40,000-60,000 BTU, basic replacement | $1,400-$2,000 | $1,400-$2,200 | $2,800-$4,200 |
| 2,000-sq-ft home, 60,000-80,000 BTU, new vent and drain | $2,000-$3,000 | $2,000-$3,000 | $4,000-$6,000 |
| 2,800-sq-ft home, 80,000-100,000 BTU, variable-speed unit and duct repair | $3,000-$4,500 | $3,000-$5,000 | $6,000-$9,500 |
The scope, rather than square footage alone, explains much of the difference between these example totals. For example, the smallest project assumes an existing compatible vent and no major duct changes. The largest includes a premium control package and limited duct repair, but a complete duct replacement could exceed the stated range.
When comparing a quote against these examples, check model numbers, AFUE, input capacity, blower type, warranty, permit allowance, and included startup work. A bid that is $1,000 lower may exclude removal, vent components, or required electrical work. A higher quote may be reasonable if it includes clearly specified upgrades, but each added charge should have a stated purpose and price.
How to Lower Furnace Price Without Cutting Essential Work
Collect at least three itemized bids based on the same heating-load needs and comparable equipment. Ask each contractor to price the same capacity range, efficiency class, controls, and installation scope. This makes it easier to spot a low bid that omits permits or venting and a high bid that includes optional upgrades.
Keep the project limited to necessary safety, code, and compatibility work before paying for convenience upgrades. Reuse a sound thermostat, serviceable ducts, and compatible vent paths when the contractor confirms they meet requirements. Avoid automatically selecting the largest furnace, a communicating control system, or zoning equipment unless the home’s layout and load calculation support the expense.
Replacing a failing furnace before an emergency can reduce rush charges and leave time to compare equipment. If the existing unit is relatively new and the problem is a repairable component, get a repair quote before approving replacement. A repair costing $200-$1,000 may be sensible for a unit with years of expected service remaining; repeated major repairs on an older furnace can make replacement more practical.
Ask whether removal, disposal, thermostat setup, permit fees, and post-installation testing are included. Confirm the warranty terms in writing, including who handles labor if a covered part fails. A low purchase price may not be the least expensive option over time if it excludes essential setup or leaves the homeowner responsible for avoidable service charges.
When a Repair Costs Less Than a Certified Furnace
Repair pricing depends on the failed part and the furnace’s age. Common service calls may total $150-$400, while a blower motor, control board, or igniter replacement can bring the bill to roughly $250-$1,200. Heat exchanger replacement can be much more expensive, and a cracked exchanger may raise safety concerns that require professional evaluation.
Compare the repair estimate with the furnace’s age, operating history, and remaining warranty. A single moderate repair on a maintained unit may cost far less than a $3,000-$7,500 replacement. If the furnace is 15-20 years old, has recurring breakdowns, or needs a major component, request both a repair and replacement estimate so the choice reflects the actual condition rather than age alone.
ENERGY STAR certification does not by itself determine whether replacement is financially worthwhile. Fuel prices, usage, climate, insulation, and the old system’s efficiency all affect potential savings. Ask the contractor to state the current unit’s condition and the new furnace’s AFUE, then compare likely energy use without treating projected savings as guaranteed.