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License verified · Washington L&I

Acco Engineered Systems Inc

5300 Denver Avenue South
+1 206-787-8500
Verification ledger

What we checked, and what we didn't

Checked against the register at build time (Oct 31, 2026).
Washington contractor licenseWashington State Department of Labor & Industries · number ACCOESI971KW · expires November 10, 2028. Matched to this business on name.Verified
Business contactphone on file.On file
Public reviewsNo public review profile in our data. License-register listings often have none — ask for two recent local references instead.None found
Insurance & bondingNot checked by AirProHQ. Ask for the certificate of insurance before work starts — the state requires cover to hold the license, but we don't see the policy.Ask them
WorkmanshipNot inspected. A license says who is allowed to do the job, not how well it was done.Ask for references
Checked against the register at build time (Oct 31, 2026). Confirm it yourself — about thirty seconds. See our full verification methodology.Open the official lookup
About

Acco Engineered Systems Inc, in brief

Acco Engineered Systems Inc is an HVAC contractor at 5300 Denver Avenue South. We matched license ACCOESI971KW to this business on the Washington L&I register through November 2028. The nearest other listed contractor is under ½ mile away.

HVAC contractor
Questions about this contractor

Before you call Acco Engineered Systems Inc

01

Is Acco Engineered Systems Inc a licensed HVAC contractor?

Yes. This business's license, ACCOESI971KW, matches an active entry on the Washington L&I register with an expiry of November 10, 2028. The official lookup lets you verify it directly.

Sources: Washington State Department of Labor & Industries register.Report a correction
Alternatives

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Sorted by straight-line distance from this office. Same license check on every one.