ADU CITIES Contractor Directory

Tier 1 Air Conditioning Inc

● Active — license status verified against CSLB public data as of November 6, 2026

☎ Call (714) 390-1245Verify this license at CSLB
CSLB license#1030742
ClassificationsC-20 — Warm-Air Heating, Ventilating and Air-Conditioning · C-36 — Plumbing
Office of record2971 Alps Rd
Corona, CA 92881
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(714) 390-1245
Contractor bond$25,000 — Harco National Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — State Compensation Insurance Fund
Business typeCorporation
License issuedSeptember 5, 2017
License expiresSeptember 30, 2027

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Data source: CSLB public records as of November 6, 2026. License status can change at any time — verify live at CSLB before signing a contract.