Furnace Replacement cost: Allen vs San Antonio (2026)
Budget-wise, furnace replacement in Allen ($4,650) runs 9% less than in San Antonio ($5,050), a roughly $400 spread.
Allen TX
Lower costTypically around $4,650
San Antonio TX
Typically around $5,050
Allen vs San Antonio: full breakdown
| Factor | Allen | San Antonio |
|---|---|---|
| Typical 2026 cost | $4,650 | $5,050 |
| Estimated range | $3,350–$5,950 | $3,600–$6,500 |
| Labor index (vs US) | ×0.87 | ×0.95 |
| Climate zone | Hot | Hot |
| Climate factor | ×0.95 | ×0.95 |
| Local permit | $200 | $200 |
| Labor share | $2,800 | $3,050 |
| Materials/equipment | $1,850 | $2,000 |
Furnace replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
How much should this gap actually matter?
That's a real $400 difference (9%) on furnace replacement — worth factoring in, though off-season timing and a tighter quote in San Antonio can narrow it.
Furnace replacement by type: Allen vs San Antonio
Each furnace replacement option, priced separately for both metros — the same local labor, climate and permit adjustments applied per city, so you can compare like for like.
| Type | Allen | San Antonio |
|---|---|---|
| Gas furnace | $3,250–$5,900 | $3,550–$6,400 |
| High-efficiency gas furnace | $2,900–$5,900 | $3,150–$6,400 |
| Electric furnace | $1,850–$3,900 | $2,000–$4,250 |
All figures are 2026 localized planning estimates for furnace replacement — get an actual quote before you commit.
Furnace replacement by home size: Allen vs San Antonio
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 | Allen | San Antonio |
|---|---|---|
| 1,000 sq ft (≈45,000 BTU) | $2,500–$4,500 | $2,700–$4,900 |
| 1,500 sq ft (≈68,000 BTU) | $2,900–$5,150 | $3,150–$5,600 |
| 2,000 sq ft (≈90,000 BTU) | $3,350–$5,950 | $3,600–$6,500 |
| 2,500 sq ft (≈110,000 BTU) | $3,800–$6,800 | $4,150–$7,400 |
| 3,000 sq ft (≈130,000 BTU) | $4,300–$7,600 | $4,700–$8,300 |
| 3,500+ sq ft (≈150,000 BTU) | $4,800–$8,450 | $5,250–$9,200 |
Treat these as 2026 localized estimates for furnace replacement, not quotes from a contractor.
What hvac pros earn in each metro
With labor making up about 60% of a furnace replacement job, wage differences between metros do most of the work here. These figures are real BLS OEWS installer wages, not modeled estimates.
McAllen-Edinburg-Mission metro · about 22% below the US average installer wage.
San Antonio-New Braunfels metro · about 9% below the US average installer wage.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for furnace replacement in either city
HVAC demand collapses in the mild shoulder seasons, so installers discount to keep crews busy. The most expensive time to buy is during a heat wave or cold snap, when a dead system forces a full-price emergency replacement.
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
Run a Manual J load calculation, then buy the standard tier — 80% AFUE, 14.3 SEER2 — and stop there. Where summers are short and winters are gentle, the equipment idles most of the year, so premium efficiency never gets enough runtime to earn back its price. Paying for SEER2 you'll rarely tap is the classic way a mild-climate homeowner overspends.
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.
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 costly errors in an HVAC job are a bad load calculation and a sloppy install — not the logo you chose. Size it with a real Manual J, let your climate set the efficiency tier, and claim whatever rebates you still qualify for.
Allen vs San Antonio
Is furnace replacement cheaper in Allen or San Antonio?
Allen comes out ahead here, at roughly $4,650 for furnace replacement compared with $5,050 in San Antonio — a 9% ($400) gap as of 2026.
Why does furnace replacement cost more in San Antonio than Allen?
The main driver is local labor rates: San Antonio's labor index is 0.95 versus 0.87 in Allen. Climate zone (hot vs hot) also shift the total.
How much is furnace replacement in Allen, TX?
Expect to pay $3,350 to $5,950 for furnace replacement in Allen in 2026, averaging around $4,650.
Do hvac pros really charge more in one city?
Real wage data backs this up — skilled installers earn roughly $24.2/hr in McAllen-Edinburg-Mission compared with $28.4/hr in San Antonio-New Braunfels (BLS OEWS). Labor is about 60% of a furnace replacement job, so that wage gap is what mostly drives the price difference.
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 Allen and San Antonio (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?
That would be a stretch. $400 is a one-time difference, not an ongoing one, and off-season buying plus apples-to-apples bids in San Antonio can close a good chunk of it. What matters more long-term is energy costs, climate and the condition of the home.
Compare furnace replacement in other cities
Updated June 2026 · By Serhat Özçelik