Air Balancing Specialty INC
Heating/Vent/Air-Conditioning and Refrig (HVAC/R) · Based in Gresham, OR · Licensed in Washington · License #AIRBAI*247OS
Expired since Oct 10, 2025
State-verifiedWhat does verified mean?
- State-verified — Checked against WA L&I records, updated daily.
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License facts
Air Balancing Specialty INC has been registered with WA L&I since 1976, based in Gresham, OR.
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Sep 10, 1976
- Expiration date
- Oct 10, 2025
- Suspend date
- May 18, 2024
- UBI
- 409020611
- Business type
- Corporation
- Phone
- (503) 230-2332
- Location
- Gresham, OR 97030
Source: WA L&I contractor registration — verified Aug 12, 2026. Applies to every row above.
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Claim this free listingBond & insurance on file
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).
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 |
|---|---|
| Dale Wayne Neffendorf | Sep 10, 1976 |
| William Glenn Neffendorf | Sep 10, 1976 |
| Diane Vanessa Neffendorf | Sep 19, 2011 |
| Sandra Lynn Neffendorf | Sep 19, 2011 |
| Ronald C Neffendorf | Jan 1, 1980 |
| Elizabeth A Neffendorf | Jan 1, 1980 |
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.
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Built from Washington State L&I public records, updated Aug 12, 2026. No star ratings or reviews — verification only.