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.
Are they who they say they are?
Not yet verified — Diamondback HVAC LLC 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 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.
Subser doesn't do star ratings or reviews — just verified records. What do these mean?
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.
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 |
|---|---|---|---|
| Harco National Insurance Co | $15,000 | Oct 23, 2024 | Continuous — until canceled |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Midvale Indemnity Comp | $1,000,000 | SEAN O SUNDWALL AGENCY AFMIC | Oct 23, 2024 | Oct 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
| Name | Start date |
|---|---|
| Christopher Gloria Castro | Oct 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.
Looking for reviews of Diamondback HVAC LLC?
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.
Own Diamondback HVAC LLC? Claim the listing free. Worked with Diamondback HVAC LLC? Endorse them from your own listing.
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Browse the directory
Built from Washington State L&I public records, updated Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.