How many hvac contractors are in Mercer Island, WA?

1 with a current Washington license, as of 2026-08-31.

How do I check a Washington contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the Washington L&I licensee database.

HVAC contractors in Mercer Island, WA

1 listings

Source: Washington L&I license records. Last verified 2026-08-31.

There are 1 hvac contractors in Mercer Island, Washington with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-06-27; every listing shows its own number and expiry date. All are drawn from the Washington L&I register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
ISLAND SECURITY SYSTEMS INC	ISLANSS122QC	ELECTRICAL CONTRACTOR	2027-06-27	MERCER ISLAND	98040	Set up workspace

Quick answers

How many hvac contractors are in Mercer Island?: 1 with a current Washington license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the Washington L&I licensee database.