Furnace Replacement cost: Decatur vs Mobile (2026)
There's essentially no price gap here: furnace replacement runs close to $4,950 in both Decatur and Mobile in 2026.
Decatur AL
Typically around $4,950
Mobile AL
Typically around $4,950
Decatur vs Mobile: full breakdown
| Factor | Decatur | Mobile |
|---|---|---|
| Typical 2026 cost | $4,950 | $4,950 |
| Estimated range | $3,550–$6,350 | $3,550–$6,350 |
| Labor index (vs US) | ×0.92 | ×0.93 |
| Climate zone | Hot | Hot |
| Climate factor | ×0.95 | ×0.95 |
| Local permit | $200 | $200 |
| Labor share | $2,950 | $2,950 |
| Materials/equipment | $2,000 | $2,000 |
Treat these as 2026 localized estimates for furnace replacement, not quotes from a contractor.
No real cost edge either way
With no real price gap on furnace replacement, the choice comes down to contractor quality and timing, not which city you're in.
Furnace replacement by type: Decatur vs Mobile
Below, each furnace replacement option is priced independently for both cities, with identical local labor, climate and permit logic applied — so the comparison holds up.
| Type | Decatur | Mobile |
|---|---|---|
| Gas furnace | $3,450–$6,250 | $3,450–$6,300 |
| High-efficiency gas furnace | $3,100–$6,250 | $3,100–$6,300 |
| Electric furnace | $1,950–$4,150 | $1,950–$4,150 |
Treat these as 2026 localized estimates for furnace replacement, not quotes from a contractor.
Furnace replacement by home size: Decatur vs Mobile
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 | Mobile |
|---|---|---|
| 1,000 sq ft (≈45,000 BTU) | $2,650–$4,750 | $2,650–$4,800 |
| 1,500 sq ft (≈68,000 BTU) | $3,100–$5,450 | $3,100–$5,500 |
| 2,000 sq ft (≈90,000 BTU) | $3,550–$6,350 | $3,550–$6,350 |
| 2,500 sq ft (≈110,000 BTU) | $4,050–$7,200 | $4,100–$7,250 |
| 3,000 sq ft (≈130,000 BTU) | $4,600–$8,100 | $4,600–$8,150 |
| 3,500+ sq ft (≈150,000 BTU) | $5,100–$8,950 | $5,150–$9,000 |
Treat these as 2026 localized estimates for furnace replacement, not quotes from a contractor.
Cheapest time for furnace replacement in either city
A furnace or AC that dies mid-heat-wave gets replaced at whatever the on-call crew charges. One that gets swapped in April or October gets a competitive, unhurried quote instead.
How much should you really budget for HVAC in 2026?
Ask five contractors for an HVAC quote and you'll get five different numbers — usually because they disagree on sizing, efficiency and equipment tier. Here's how our editors think through those trade-offs.
The budget-first case
In a temperate region the smart move is to size the job correctly with a Manual J and take the base efficiency tier. A system that spends most days coasting can't recover the cost of a high-SEER2 compressor, because the savings only show up under heavy load you don't put on it. Match the equipment to how little you actually run it, not to the brochure's top number.
The longevity case
The most expensive variable on the quote isn't the logo — it's whether the system is sized right and installed well. Oversize a premium unit and it short-cycles, wears fast and underperforms; commission a correctly sized mid-tier one and keep up the annual service, and it simply lasts longer. Spend on the installation, not the badge.
The efficiency-first case
High runtime changes the math. In a demanding climate the extra efficiency of a heat pump or a top-tier SEER2/AFUE unit gets paid back month after month on the utility bill, and state and utility incentives can shave the upfront figure further now that the federal 25C/25D credits have expired. Price the lifetime bills, not just the tag, before you default down.
Skip the brand debate. A correctly sized system, an efficiency tier that fits your climate, and a properly commissioned install will save you more than any label ever could.
Decatur vs Mobile
Is furnace replacement cheaper in Decatur or Mobile?
furnace replacement costs about the same in both — roughly $4,950 in each city.
Why does furnace replacement cost more in Mobile than Decatur?
It comes down to labor: Mobile indexes at 0.93 against Decatur's 0.92. The hot-vs-hot climate difference adds to the gap.
How much is furnace replacement in Decatur, AL?
furnace replacement in Decatur runs $3,550–$6,350 as of 2026 — most jobs land near $4,950.
When is the cheapest time to buy furnace replacement — and does it differ by city?
It doesn't vary by location — Spring and fall (Mar–May, Sep–Oct) is the discount window in both Decatur and Mobile (roughly 5–15% off), while peak summer and mid-winter tends to be the most expensive in either city.
Should I choose where to live based on furnace replacement cost?
There's no cost argument here between Decatur and Mobile — they're a wash. Focus on contractor reputation, project scope, equipment tier and timing.
Compare furnace replacement in other cities
Updated June 2026 · By Serhat Özçelik