Full HVAC System Replacement cost: Kennewick vs Seattle (2026)
In 2026, full HVAC system replacement is about 16% less expensive in Kennewick than in Seattle. Most homeowners pay around $12,000 in Kennewick versus $13,950 in Seattle — a gap of roughly $1,950.
Kennewick WA
Lower costTypically around $12,000
Seattle WA
Typically around $13,950
Kennewick vs Seattle: full breakdown
| Factor | Kennewick | Seattle |
|---|---|---|
| Typical 2026 cost | $12,000 | $13,950 |
| Estimated range | $8,400–$15,600 | $9,800–$18,100 |
| Labor index (vs US) | ×1.02 | ×1.19 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $225 | $250 |
| Labor share | $7,200 | $8,350 |
| Materials/equipment | $4,800 | $5,600 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national full HVAC system replacement range for local labor, climate and permits.
Kennewick vs Seattle
Is full HVAC system replacement cheaper in Kennewick or Seattle?
In 2026, full HVAC system replacement is cheaper in Kennewick at about $12,000, versus $13,950 in Seattle — a difference of about $1,950 (16%).
Why does full HVAC system replacement cost more in Seattle than Kennewick?
The main driver is local labor rates: Seattle's labor index is 1.19 versus 1.02 in Kennewick. Climate zone (mixed vs mixed) and permit fees also shift the total.
How much is full HVAC system replacement in Kennewick, WA?
In Kennewick, full HVAC system replacement typically runs $8,400–$15,600 in 2026, with most homeowners paying around $12,000.
Updated June 2026 · By Costadia Editorial