Boiler Replacement Cost in Montgomery, Alabama
Our 2026 estimate for boiler replacement in Montgomery, AL is $4,400 to $10,100. That puts Montgomery 19% below the national average, mainly because of lower local labor costs.
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Montgomery Weather and HVAC Load
Montgomery logs 1,755 heating degree days and 2,846 cooling degree days in a normal year, based on the closest NOAA weather station. Cooling carries most of the load. Heating equipment gets light use, so a furnace here often outlasts the AC it's paired with. A normal year brings 40 nights at or below freezing and 92 days over 90°F. For a 2,000 sq ft house, this climate points to a heating load somewhere near 35,000 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 | 1,755 |
|---|---|
| Cooling degree days / year | 2,846 |
| Nights at or below 32°F | 40 |
| Days above 90°F | 92 |
| Average low / high | 57.1°F / 78.7°F |
Montgomery Housing Stock
Half the homes in Montgomery were built before 1977 (Census ACS median), so the typical house is about 49 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Owners live in 54.3% of occupied homes, roughly 44,000 households. Homes here have a median value of $148,500 and households a median income of $55,687. Those two numbers drive the labor adjustment in our estimate.
NOAA storm reports for Montgomery County show 12 hail days and 21 days with damaging thunderstorm winds over the six years from 2020 to 2025. The largest hail reported was 1.75 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage. Montgomery County also had 7 tornado days in that period.
When Replacement Makes Sense
- The pilot or ignition keeps failing
- The boiler is 20 to 30 years old or more
- Fuel bills keep going up
- Leaks, rust, or pressure that keeps dropping
What Moves the Price
- A new chimney liner or venting
- Fuel type: gas, oil or propane
- A combi boiler that also makes your hot water
- Condensing or non-condensing boiler
- Pumps, zone valves and the piping around the boiler
We lowered the national figures about 19% for Montgomery 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
- The new boiler and the piping around it
- Startup and safety tests
- Flushing and refilling the system
- Removing the old boiler
- Venting and fuel hookups
Alabama Permits, Efficiency Rules and Rebates
Alabama is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Plan on a mechanical permit for most replacements in Montgomery; the contractor normally pulls it. Before you sign, ask each bidder for their Alabama 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
- Ask for a heat-loss calculation. A lot of old boilers are much bigger than the house needs.
- For a steam system, hire a contractor who works on steam regularly.
- A combi boiler frees up space and replaces your water heater.
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Boiler Replacement Questions from Montgomery Homeowners
How much is boiler replacement in Montgomery?
Plan on $4,400 to $10,100, with most jobs near $7,500. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule boiler replacement in Montgomery?
Between late fall and early spring. With 92 days over 90°F, Montgomery contractors are booked solid all summer, and off-season jobs are easier to schedule and negotiate.
How long does a boiler last?
A cast-iron boiler can last 25 to 35 years. A modern condensing boiler usually lasts 15 to 20 with yearly service.
Can I replace a boiler with a heat pump?
Yes, with an air-to-water heat pump or a ductless system. The radiators may need upgrading, because heat pumps run cooler water than boilers.
Boiler Replacement Near Montgomery
- Birmingham $4,500 to $10,300
- Tuscaloosa $4,700 to $10,700
- Mobile $4,300 to $9,800
- Huntsville $5,300 to $12,000
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Montgomery; NOAA Storm Events Database 2020-2025, Montgomery County. Prices are our estimates, not contractor quotes. Updated 2026.