Furnace Replacement cost: City of Sammamish vs Tri-Cities (2026)
In 2026, furnace replacement is about 17% more expensive in City of Sammamish than in Tri-Cities. Most homeowners pay around $6,700 in City of Sammamish versus $5,750 in Tri-Cities — a gap of roughly $950.
City of Sammamish WA
Typically around $6,700
Tri-Cities WA
Lower costTypically around $5,750
City of Sammamish vs Tri-Cities: full breakdown
| Factor | City of Sammamish | Tri-Cities |
|---|---|---|
| Typical 2026 cost | $6,700 | $5,750 |
| Estimated range | $4,800–$8,600 | $4,100–$7,400 |
| Labor index (vs US) | ×1.19 | ×1.02 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $250 | $225 |
| Labor share | $4,000 | $3,450 |
| Materials/equipment | $2,700 | $2,300 |
All figures are 2026 localized planning estimates for furnace replacement — get an actual quote before you commit.
How much should this gap actually matter?
17% (about $950) is enough to notice on a furnace replacement budget. Timing the purchase for the off-season and pushing for an apples-to-apples bid in City of Sammamish can close much of that gap.
Furnace replacement by type: City of Sammamish vs Tri-Cities
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 | City of Sammamish | Tri-Cities |
|---|---|---|
| Gas furnace | $4,650–$8,450 | $4,000–$7,300 |
| High-efficiency gas furnace | $4,200–$8,450 | $3,600–$7,300 |
| Electric furnace | $2,650–$5,600 | $2,250–$4,850 |
All figures are 2026 localized planning estimates for furnace replacement — get an actual quote before you commit.
Furnace replacement by home size: City of Sammamish vs Tri-Cities
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 | City of Sammamish | Tri-Cities |
|---|---|---|
| 1,000 sq ft (≈45,000 BTU) | $3,600–$6,450 | $3,100–$5,550 |
| 1,500 sq ft (≈68,000 BTU) | $4,200–$7,400 | $3,600–$6,350 |
| 2,000 sq ft (≈90,000 BTU) | $4,800–$8,600 | $4,100–$7,400 |
| 2,500 sq ft (≈110,000 BTU) | $5,500–$9,800 | $4,750–$8,400 |
| 3,000 sq ft (≈130,000 BTU) | $6,200–$10,950 | $5,350–$9,450 |
| 3,500+ sq ft (≈150,000 BTU) | $6,900–$12,150 | $5,950–$10,450 |
All figures are 2026 localized planning estimates for furnace replacement — get an actual quote before you commit.
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.
Seattle-Tacoma-Bellevue metro · about 32% above the US average installer wage.
No BLS metro wage series for Tri-Cities; we use Washington regional price parity instead.
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
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?
Sizing, efficiency tier and brand pull a quote in different directions. Here's how our editors weigh the trade-offs that decide what you actually pay.
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
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 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 brand on the unit matters far less than getting the sizing and installation right. Insist on a Manual J calculation, match efficiency to your climate, and claim every rebate available.
City of Sammamish vs Tri-Cities
Is furnace replacement cheaper in City of Sammamish or Tri-Cities?
In 2026, furnace replacement is cheaper in Tri-Cities at about $5,750, versus $6,700 in City of Sammamish — a difference of about $950 (17%).
Why does furnace replacement cost more in City of Sammamish than Tri-Cities?
It comes down to labor: City of Sammamish indexes at 1.19 against Tri-Cities's 1.02. The mixed-vs-mixed climate difference, plus permit fees, adds to the gap.
How much is furnace replacement in City of Sammamish, WA?
furnace replacement in City of Sammamish runs $4,800–$8,600 as of 2026 — most jobs land near $6,700.
When is the cheapest time to buy furnace replacement — and does it differ by city?
The best window is the same in both City of Sammamish and Tri-Cities: Spring and fall (Mar–May, Sep–Oct), when demand drops and installers discount to keep crews busy — typically 5–15% off peak pricing. The most expensive time anywhere is an emergency replacement during peak summer and mid-winter.
Should I choose where to live based on furnace replacement cost?
Rarely. The $950 difference is real but one-time, and you can often close most of it in City of Sammamish 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