Mainstream Mechanical CORP
Heating/Vent/Air-Conditioning and Refrig (HVAC/R) · Edmonds, WA · License #MAINSM*945JF
Mainstream Mechanical CORP is one of 9 Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors registered in Edmonds, registered with WA L&I since 2006. Registered longer than roughly half of Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors in Edmonds. Current filings: $15,000 surety bond (continuous) and $2,000,000 liability coverage through Apr 10, 2027.
How confident can you be in Mainstream Mechanical CORP?
Are they licensed, bonded, and insured?
Active license, $15,000 bond and $2,000,000 liability on file — checked against WA L&I records, updated daily.
Are they who they say they are?
Not yet verified — Mainstream Mechanical CORP hasn't claimed this listing. Own this business? Claim it free.
Do other pros stand behind them?
No endorsements yet from other licensed contractors in Edmonds.
Do they have jobs on record?
Not yet measured — Mainstream Mechanical CORP hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.
Subser doesn't do star ratings or reviews — just verified records. What do these mean?
License facts
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Apr 6, 2006
- Expiration date
- Apr 24, 2028
- UBI
- 602574360
- Business type
- Corporation
- Phone
- (425) 778-4315
- Location
- Edmonds, WA 98026
Source: WA L&I contractor registration — checked Sep 27, 2026. Applies to every row above.
Registration is current through Apr 2028.
Is this your business? Claim it free to verify ownership — takes about two minutes.
Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| Lexon Ins Co | $15,000 | Apr 24, 2026 | Continuous — until canceled |
| Lexon Ins Co | $6,000 | Mar 10, 2012 | Apr 24, 2026 |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Farmers Ins Exchange | $2,000,000 | STEVEN & AARON ZWEIFACH AGENCY | Apr 10, 2021 | Apr 10, 2027 |
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 $15,000 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 |
|---|---|
| Clifford S Shoemaker | Apr 6, 2006 |
| Caralyn Keenan | Apr 6, 2006 |
| Clifford S Shoemaker | Apr 15, 2010 |
What is a Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractor licensed to do in Washington?
An HVAC/R specialty contractor is registered with WA L&I to install and service heating, ventilation, air-conditioning, and refrigeration systems. Electrical and mechanical work within HVAC systems may also require trade licenses administered separately by the state. Washington requires a $15,000 surety bond and general liability insurance for this registration. Washington currently lists 9 Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors registered in Edmonds.
Looking for reviews of Mainstream Mechanical CORP?
Subser doesn't have reviews or star ratings. This page shows Mainstream Mechanical CORP's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Mainstream Mechanical CORP? Claim the listing free. Worked with Mainstream Mechanical CORP? Endorse them from your own listing.
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Built from Washington State L&I public records, updated Sep 27, 2026. Subser doesn't do star ratings or reviews — just verified records.