Furnace Replacement cost: Decatur vs Montgomery (2026)
Decatur runs 2% lower than Montgomery for furnace replacement — expect around $4,950 in Decatur against $5,050 in Montgomery, a difference of about $100.
Decatur AL
Lower costTypically around $4,950
Montgomery AL
Typically around $5,050
Decatur vs Montgomery: full breakdown
| Factor | Decatur | Montgomery |
|---|---|---|
| Typical 2026 cost | $4,950 | $5,050 |
| Estimated range | $3,550–$6,350 | $3,600–$6,450 |
| Labor index (vs US) | ×0.92 | ×0.94 |
| Climate zone | Hot | Hot |
| Climate factor | ×0.95 | ×0.95 |
| Local permit | $200 | $200 |
| Labor share | $2,950 | $3,050 |
| Materials/equipment | $2,000 | $2,000 |
Furnace replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
Is the gap worth worrying about?
2% is within noise for furnace replacement — contractor selection and timing move the price more than which of these two metros you're in.
Furnace replacement by type: Decatur vs Montgomery
Every furnace replacement type gets its own localized price for each metro, using the same labor, climate and permit adjustments — a true apples-to-apples comparison.
| Type | Decatur | Montgomery |
|---|---|---|
| Gas furnace | $3,450–$6,250 | $3,500–$6,350 |
| High-efficiency gas furnace | $3,100–$6,250 | $3,150–$6,350 |
| Electric furnace | $1,950–$4,150 | $2,000–$4,200 |
These are 2026 planning figures for furnace replacement, localized to each city — not formal quotes.
Furnace replacement by home size: Decatur vs Montgomery
Furnace cost scales with the heating capacity (BTU) your home needs — roughly 40–45 BTU per square foot in a mixed climate. Larger homes need a bigger unit and more ductwork.
| Size | Decatur | Montgomery |
|---|---|---|
| 1,000 sq ft (≈45,000 BTU) | $2,650–$4,750 | $2,700–$4,850 |
| 1,500 sq ft (≈68,000 BTU) | $3,100–$5,450 | $3,150–$5,550 |
| 2,000 sq ft (≈90,000 BTU) | $3,550–$6,350 | $3,600–$6,450 |
| 2,500 sq ft (≈110,000 BTU) | $4,050–$7,200 | $4,150–$7,350 |
| 3,000 sq ft (≈130,000 BTU) | $4,600–$8,100 | $4,650–$8,250 |
| 3,500+ sq ft (≈150,000 BTU) | $5,100–$8,950 | $5,200–$9,150 |
These are 2026 planning figures for furnace replacement, localized to each city — not formal quotes.
Cheapest time for furnace replacement in either city
Installers cut prices in spring and fall because job volume drops and crews sit idle — the opposite happens during a summer heat wave or winter cold snap, when a dead system forces homeowners into a full-price emergency swap.
How much should you really budget for HVAC in 2026?
Get the sizing wrong or the efficiency tier mismatched to your climate, and the price drifts fast in either direction. Below, a look at how those choices — plus brand markup — shape the real number.
The longevity case
The single biggest cost driver isn't the brand — it's correct sizing and install quality. A properly sized, well-commissioned mid-tier system with annual maintenance outlasts an oversized premium unit that short-cycles. Spend on the install, not the badge.
The efficiency-first case
Where you face brutal summers or hard winters, a higher SEER2/AFUE system or a heat pump runs enough hours to claw back its premium through lower bills — and utility or state rebates can still trim the sticker even though the federal 25C/25D credits closed at the end of 2025. Do the payback arithmetic before you reach for the cheapest box on the lot.
The budget-first case
Size the system to your home with a Manual J calculation and buy the standard efficiency tier (80% AFUE / 14.3 SEER2). In a mild climate the cheaper unit pays off because you rarely run it hard — paying for premium efficiency you won't use is the most common way to overspend.
Climate decides the efficiency tier; a proper load calculation decides everything else. Nail both, stack the rebates you can, and you've sidestepped the two mistakes — wrong size, rushed install — that actually inflate the lifetime cost.
Decatur vs Montgomery
Is furnace replacement cheaper in Decatur or Montgomery?
Decatur wins on price: furnace replacement runs about $4,950 there versus $5,050 in Montgomery, a gap of roughly $100 (2%) as of 2026.
Why does furnace replacement cost more in Montgomery than Decatur?
Montgomery's higher labor index (0.94 vs 0.92 in Decatur) is the biggest factor, with the hot/hot climate split playing a smaller role.
How much is furnace replacement in Decatur, AL?
Expect to pay $3,550 to $6,350 for furnace replacement in Decatur in 2026, averaging around $4,950.
When is the cheapest time to buy furnace replacement — and does it differ by city?
Timing doesn't change by city here — Spring and fall (Mar–May, Sep–Oct) is the cheapest window in both Decatur and Montgomery, saving roughly 5–15%. Avoid peak summer and mid-winter in either location, when emergency replacements push prices up.
Should I choose where to live based on furnace replacement cost?
Rarely. The $100 difference is real but one-time, and you can often close most of it in Montgomery by buying in the off-season and getting tighter, apples-to-apples bids. Ongoing factors — energy prices, climate and home condition — matter more over the life of the system.
Compare furnace replacement in other cities
Updated June 2026 · By Serhat Özçelik