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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Bond & 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

NameStart date
Dale Wayne NeffendorfSep 10, 1976
William Glenn NeffendorfSep 10, 1976
Diane Vanessa NeffendorfSep 19, 2011
Sandra Lynn NeffendorfSep 19, 2011
Ronald C NeffendorfJan 1, 1980
Elizabeth A NeffendorfJan 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.