Diamondback HVAC LLC

Heating/Vent/Air-Conditioning and Refrig (HVAC/R) · Olympia, WA · License #DIAMOHL767P8

Diamondback HVAC LLC is one of 16 Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors registered in Olympia, registered with WA L&I since 2024. Registered longer than roughly 25% of Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors in Olympia. Current filings: $15,000 surety bond (continuous) and $1,000,000 liability coverage through Oct 23, 2027.

How confident can you be in Diamondback HVAC LLC?

Are they licensed, bonded, and insured?

Active license, $15,000 bond and $1,000,000 liability on file — checked against WA L&I records, updated daily.

Source:License facts on this pageVerify at WA L&I

Are they who they say they are?

Not yet verified — Diamondback HVAC LLC hasn't claimed this listing. Own this business? Claim it free.

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No endorsements yet from other licensed contractors in Olympia.

Do they have jobs on record?

Not yet measured — Diamondback HVAC LLC hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.

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License facts

License type
CONSTRUCTION CONTRACTOR
Effective date
Oct 28, 2024
Expiration date
Oct 28, 2026
UBI
605603880
Business type
Limited Liability Company
Phone
(602) 679-4732
Location
Olympia, WA 98513

Source: WA L&I contractor registration — checked Sep 28, 2026. Applies to every row above.

Registration is current through Oct 2026.

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Bond & insurance on file

Bond firmAmountEffectiveExpiration
Harco National Insurance Co$15,000Oct 23, 2024Continuous — until canceled
Insurance companyAmountAgencyEffectiveExpiration
Midvale Indemnity Comp$1,000,000SEAN O SUNDWALL AGENCY AFMICOct 23, 2024Oct 23, 2027
What the bond and insurance requirements mean for homeowners

Registration as a specialty contractor in Washington requires a $15,000 surety bond on file with the Department of Labor & Industries; the general contractor requirement is $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

NameStart date
Christopher Gloria CastroOct 28, 2024
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. A $15,000 surety bond and general liability insurance, filed with WA L&I, are required for this registration. Washington currently lists 16 Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors registered in Olympia.

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Subser doesn't have reviews or star ratings. This page shows Diamondback HVAC LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.

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Built from Washington State L&I public records, updated Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.