Furnace Replacement Cost in Lewiston, Maine
Furnace replacement in Lewiston runs about $6,300 for a typical job. Basic installs start near $3,500. High-efficiency equipment with duct or electrical work can reach $8,500.
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Lewiston Weather and HVAC Load
In a normal year, Lewiston racks up 7,270 heating and 485 cooling degree days (NOAA 1991-2020 normals). Heating is the bigger job here, and furnaces and heat pumps in Lewiston put in far more hours than the air conditioner. A normal year brings 141 nights at or below freezing and 10 days over 90°F. Snowfall averages about 65 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 70,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 7,270 |
|---|---|
| Cooling degree days / year | 485 |
| Nights at or below 32°F | 141 |
| Days above 90°F | 10 |
| Average low / high | 37.7°F / 54.9°F |
Lewiston Housing Stock
The median Lewiston home dates to 1957, according to the Census ACS. That makes the typical house about 69 years old. Houses that old often still have duct runs sized for an old coal or oil furnace and 60- or 100-amp electrical panels. Both can add cost when new equipment goes in. Owners live in 50.3% of occupied homes, roughly 7,900 households. The median home value is $214,200, and median household income is $56,558. We use both figures to adjust labor and pricing for this page.
NOAA storm reports for Androscoggin County show 3 hail days and 12 days with damaging thunderstorm winds over the six years from 2020 to 2025. The largest hail reported was 1.5 inches across. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost. In Lewiston, 18.2% of residents are 65 or older. For older adults, a house with no heat in January or no AC during a heat wave is a medical risk. Mention it when you call, since many companies put those calls first.
When Replacement Makes Sense
- A tech found a cracked heat exchanger, or the CO detector has gone off
- The furnace is 15 to 20 years old or more
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
- A repair quote runs past a third of the cost of a new unit
What Moves the Price
- Permit and inspection fees, which the local building department sets
- Single-stage, two-stage or modulating gas valve
- New PVC venting if you move to a condensing model
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- Condition of the existing ductwork and any changes it needs
- BTU size, which should come from a Manual J load calculation
We raised the national figures about 9% for Lewiston using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- Removing and hauling away the old furnace
- Combustion and safety tests
- Gas line and vent connections
- The new furnace, filter rack and thermostat wiring
- The permit and the manufacturer warranty registration
Maine Permits, Efficiency Rules and Rebates
Maine falls in the DOE's North region. New split central air conditioners must meet at least 13.4 SEER2, and heat pumps sold anywhere in the U.S. need 14.3 SEER2 and 7.5 HSPF2. Expect the contractor to pull a mechanical permit for a replacement job in Lewiston. If a bidder suggests skipping it, move on. Also ask for a Maine license or registration number and proof of insurance. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Look up utility rebates on 95%+ AFUE units before you buy.
- Replace it in early fall if you can. A no-heat emergency in January costs more and leaves you fewer choices.
- Make sure all three quotes are for the same AFUE and staging, or you can't compare them.
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Furnace Replacement Questions from Lewiston Homeowners
How much is furnace replacement in Lewiston?
Plan on $3,500 to $8,500, with most jobs near $6,300. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule furnace replacement in Lewiston?
Between late spring and early fall. Lewiston averages 141 freezing nights a year, and heating calls spike from November through February.
How long does a furnace replacement take?
A straight swap is usually done in one day, somewhere between 4 and 10 hours. Moving to a condensing furnace with new PVC venting can add a few more.
Is a high-efficiency furnace worth it?
In cold climates, a 95%+ AFUE furnace usually earns back the price difference in lower gas bills. Where winters are mild, the payback can take a very long time.
Furnace Replacement Near Lewiston
- Auburn $3,700 to $9,000
- Portland $4,100 to $10,000
- Bangor $3,500 to $8,500
- South Portland $4,100 to $10,100
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Lewiston; NOAA Storm Events Database 2020-2025, Androscoggin County. Prices are our estimates, not contractor quotes. Updated 2026.