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Diamondback HVAC LLC

Registered with Washington L&I Active
DIAMOHL767P8 · Construction Contractor · renews October 2026

From the state register, October 17, 2026. Confirm on L&I, which also shows their bond and insurance.

(602) 679-4732Phone on their state registration Reviews on GoogleOpens Google Maps
HVAC/RSpecialty on the register

Before you hire them

1Check the name on your estimate matches Diamondback HVAC LLC and registration DIAMOHL767P8.
2Ask whether the job needs a permit, and who pulls it.
3Get a written estimate first. No big cash deposits.
Ask this pro to call me

Free. Goes to one pro registered with Washington L&I.

Referral service, not a contractor. Privacy.

"Get a pro to call me" goes to Diamondback HVAC LLC if they can take it; if not, to one other registered HVAC company near Olympia.

Other registered HVAC companies in Olympia

Master Mechanical LLCMASTEML83373Burge SolutionsBURGES*798CWPacific Air Heating & A/C IncPACIFAH908LPCustom Sheet Metal IncCUSTOSM921PZDad's Heating & Air LLCDADSHHA748LHCrystal Air SystemsCRYSTAS996R8

All HVAC companies in Olympia

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