Mainstream Mechanical CORP
HVAC/RFRG · Edmonds, WA · License #MAINSMC943K2
Active
State-verifiedWhat does verified mean?
- State-verified — Checked against WA L&I records, updated daily.
- Owner-verified — The business claimed this listing and verified ownership — free. Claim this listing
- Proven on Subser — The business runs real jobs through Subser — measured performance, not reviews.
License facts
Mainstream Mechanical CORP is one of 4 HVAC/RFRG contractors registered in Edmonds, registered with WA L&I since 2006. Current filings: $4,000 surety bond (continuous). Principals on record since 2006.
- License type
- ELECTRICAL CONTRACTOR
- Effective date
- May 22, 2006
- Expiration date
- May 22, 2028
- UBI
- 602574360
- Business type
- Corporation
- Phone
- (425) 778-4315
- Location
- Edmonds, WA 98026
Source: WA L&I contractor registration — verified Aug 13, 2026. Applies to every row above.
Is this your business? Update your info and take booking requests.
Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| Lexon Ins Co | $4,000 | Mar 10, 2012 | Continuous — until canceled |
What the bond and insurance requirements mean for homeowners
A $15,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for specialty contractors in Washington (general contractors file $30,000). This contractor's current filing shows a $4,000 bond.
The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.
Principals
| Name | Start date |
|---|---|
| Caralyn Keenan | May 22, 2006 |
| Cliffords Shoemaker | May 22, 2006 |
| Cliffords Shoemaker | May 22, 2006 |
What is a HVAC/RFRG contractor licensed to do in Washington?
An HVAC/RFRG registration covers heating, ventilation, air-conditioning, and refrigeration work under the specialty classification WA L&I assigns to this code. Related mechanical and electrical work may require separate state trade licenses. Washington requires a $15,000 surety bond and general liability insurance for this registration. Washington currently lists 4 HVAC/RFRG contractors registered in Edmonds.
Browse the directory
Built from Washington State L&I public records, updated Aug 13, 2026. No star ratings or reviews — verification only.