Heating and cooling
Furnace replacement (gas): what it costs in Massachusetts
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts and materials | $3,800 | $7,500 |
| Labor: 14 to 28 hours × $100 to $140 an hour | $1,400 | $3,920 |
| Fees: disposal, permits, supplies | $150 | $600 |
| Total, rounded | $5,300 | $12,100 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $38.41 an hour, times 2.6 to 3.6 to cover what a contractor bills (overhead, tools, insurance, profit). Materials are a band from basic to high-end. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your home, materials and contractor change the number.
Remove an old gas furnace and install a new one with the same fuel. Needed when the furnace is past 15-20 years, cracked, or repairs cost more than half of a new unit.
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What is usually included
- New gas furnace and filter rack
- Removal and disposal of the old unit
- Gas, flue and electrical hookups
- Thermostat connection and startup test
- Permit and inspection in most towns
What moves the price
- Efficiency (80% vs 95%+ condensing)
- Furnace size and single vs two-stage blower
- Flue changes or new PVC venting
- Ductwork or gas line fixes found on the day
Questions to ask before you say yes
- What size is the unit and how was it figured (load calculation)?
- Are the permit and gas inspection part of the quote?
- What does the warranty cover on parts and labor?
- Are Mass Save rebates available for this model?
Can you do it yourself?
Not a DIY. Gas lines, venting and carbon monoxide risk require a licensed pro and a permit in Massachusetts.
Common questions
How long does a furnace last?
Most gas furnaces last 15 to 20 years. Cracked heat exchangers or constant repairs mean it is time to replace.
Is a high-efficiency furnace worth it?
In Massachusetts winters it often pays back over several years, and Mass Save rebates can cut the cost. Ask for both options in writing.
How long is the house without heat?
A standard furnace swap takes one day, often 6 to 10 hours. Ask the crew to start early, and to leave a space heater plan if the job runs late in winter.
How much does furnace replacement (gas) cost in Massachusetts?
A typical range is $5,300 to $12,100. It is an estimate built from labor wages and material prices, not a quote.
Typical range in 10 metro areas
Only the labor rate changes between cities. Same parts, same hours.
| Area | Typical range, estimate |
|---|---|
| Boston area, Massachusetts | $5,300 to $12,100 |
| New York City area | $5,300 to $12,100 |
| Los Angeles area, California | $5,200 to $11,800 |
| Chicago area, Illinois | $5,300 to $11,900 |
| Houston area, Texas | $5,000 to $11,100 |
| Dallas-Fort Worth area, Texas | $5,000 to $11,100 |
| Phoenix area, Arizona | $5,000 to $11,200 |
| Atlanta area, Georgia | $5,000 to $11,100 |
| Miami area, Florida | $5,000 to $11,100 |
| Seattle area, Washington | $5,400 to $12,300 |