All Mini Split AC Installation cost guides / State market page

6 reports. Still early. Read individual reports rather than trusting summary stats.

Mini Split AC Installation Cost in Washington

Mini split AC installation costs in Washington range from $800 to $16,000, with most homeowners paying around $5,250. Half of reported projects fell between $3,675 and $7,125, providing a practical range for budgeting your installation.

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Price distribution

Median $5,250.00 · typical $3,675.00–$7,125.00

$5,250.00

$800.00

$16,000.00

Shaded band: middle 50% of reports (25th–75th percentile). Median tick in teal.

Most jobs land between $1,450.00 and $13,875.00 (5th–95th percentile). Ignoring 1 outlier below and 1 above.

Based on reports from Apr 2026 (first entries this month).

Data freshness: 6 reports in the last 90 days. Help keep this current →

Data last updated Apr 8, 2026.

Latest reports

The underlying prices behind this page.

6 total reports

$800.00

Seattle, WA · 6 days ago

Mini Split Installation

They quoted me for cleaning the mini split blowers, plus additional fees bringing the total to around $2k, including two maintenance visits and a diagnostic visit.

$4,500.00

Bellingham, WA · 6 days ago

Mini Split Installation

Added a second Mitsubishi mini split to their home this summer, costing under.

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Bellingham, WA · 6 days ago

"Everyone else quoted double that amount."

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