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NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

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Heating and air conditioning in Diamond Bar, CA

33 heating and air conditioning in Diamond Bar, CA. Every listing checked against the issuer's record, in the published order.

  1. Equal Air Balance

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    San Dimas, CA · WC ✓ · 7 mi away

    CallAsk it
    Proof for Equal Air Balance
    License
    CSLB 1006492
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Aug 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    San Dimas, CA · serves California
    Phone
    (714) 637-3500
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  2. Espinosa Martin

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Covina, CA · WC ✓ · 7 mi away

    CallAsk it
    Proof for Espinosa Martin
    License
    CSLB 660206
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jun 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Covina, CA · serves California
    Phone
    (626) 974-9141
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  3. Evolution Heating and Air Conditioning

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Fullerton, CA · WC ✓ · 10 mi away

    CallAsk it
    Proof for Evolution Heating and Air Conditioning
    License
    CSLB 1049849
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Feb 28, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Fullerton, CA · serves California
    Phone
    (657) 295-5275
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  4. Evolution Heating and Air Conditioning Inc

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Fullerton, CA · WC ✓ · 10 mi away

    CallAsk it
    Proof for Evolution Heating and Air Conditioning Inc
    License
    CSLB 1082536
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Oct 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Fullerton, CA · serves California
    Phone
    (657) 295-5275
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  5. Extreme Air Conditioning & Heating Inc

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Yorba Linda, CA · WC ✓ · 9 mi away

    CallAsk it
    Proof for Extreme Air Conditioning & Heating Inc
    License
    CSLB 900376
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jan 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Yorba Linda, CA · serves California
    Phone
    (657) 363-8058
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  6. F M Thomas Air Conditioning Inc

    ActivePrivate motor carrier

    Brea, CA · 5 mi away

    CallAsk it
    Proof for F M Thomas Air Conditioning Inc
    USDOT registration
    US-DOT 4469897
    Issuer
    US-DOT
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    Brea, CA · serves California
    Phone
    (714) 738-1062
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-DOT record

  7. Fangfang Duan HVAC Services

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    West Covina, CA · WC ✓ · 5 mi away

    CallAsk it
    Proof for Fangfang Duan HVAC Services
    License
    CSLB 1158233
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jul 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    West Covina, CA · serves California
    Phone
    (626) 235-4727
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  8. Fenco a Heating and Air Conditioning

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Placentia, CA · WC ✓ · 9 mi away

    CallAsk it
    Proof for Fenco a Heating and Air Conditioning
    License
    CSLB 981094
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jul 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Placentia, CA · serves California
    Phone
    (714) 920-8784
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  9. Ferny HVAC

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Pomona, CA · WC ✓ · 5 mi away

    CallAsk it
    Proof for Ferny HVAC
    License
    CSLB 1130787
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Dec 31, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Pomona, CA · serves California
    Phone
    (909) 525-3904
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  10. Fire Co Sprinkler

    ActiveC16 Fire Protection+2

    Brea, CA · WC ✓ · 6 mi away

    CallAsk it
    Proof for Fire Co Sprinkler
    License
    CSLB 1080808
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C16 Fire Protection; C34 Pipeline; D62 Air and Water Balancing
    Expires
    Oct 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Brea, CA · serves California
    Phone
    (562) 286-3145
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  11. First Class Comfort HVAC LLC

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Fullerton, CA · WC ✓ · 10 mi away

    CallAsk it
    Proof for First Class Comfort HVAC LLC
    License
    CSLB 1141174
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jul 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Fullerton, CA · serves California
    Phone
    (619) 602-4314
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  12. First Response Air Conditioning & Heating Inc

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning+1

    Yorba Linda, CA · WC ✓ · 9 mi away

    CallAsk it
    Proof for First Response Air Conditioning & Heating Inc
    License
    CSLB 1038351
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning; D12 Synthetic Products
    Expires
    Apr 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Yorba Linda, CA · serves California
    Phone
    (714) 676-2024
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  13. Fisher Air Heating & Air Conditioning Services

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Brea, CA · WC ✓ · 5 mi away

    CallAsk it
    Proof for Fisher Air Heating & Air Conditioning Services
    License
    CSLB 519630
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Oct 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Brea, CA · serves California
    Phone
    (714) 529-9600
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  14. Fix My a C Incorporated

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Chino Hills, CA · WC ✓ · 7 mi away

    CallAsk it
    Proof for Fix My a C Incorporated
    License
    CSLB 855348
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Mar 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino Hills, CA · serves California
    Phone
    (949) 939-2949
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  15. Flores Fausto Jr Heating/Air Conditioning

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Placentia, CA · WC ✓ · 9 mi away

    CallAsk it
    Proof for Flores Fausto Jr Heating/Air Conditioning
    License
    CSLB 926020
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Dec 31, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Placentia, CA · serves California
    Phone
    (714) 357-4546
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  16. Franklin Heating and Air Conditioning

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    San Dimas, CA · WC ✓ · 7 mi away

    CallAsk it
    Proof for Franklin Heating and Air Conditioning
    License
    CSLB 1046848
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Nov 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    San Dimas, CA · serves California
    Phone
    (951) 255-8201
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  17. Full Blast Heating and Air Conditioning

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    West Covina, CA · WC ✓ · 5 mi away

    CallAsk it
    Proof for Full Blast Heating and Air Conditioning
    License
    CSLB 973689
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jun 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    West Covina, CA · serves California
    Phone
    (626) 222-2449
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  18. Fwcompany Inc

    ActiveC38 Refrigeration

    Yorba Linda, CA · WC exempt · 7 mi away

    CallAsk it
    Proof for Fwcompany Inc
    License
    CSLB 506937
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C38 Refrigeration
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Exempt: no employees
    Where
    Yorba Linda, CA · serves California
    Phone
    (714) 743-4506
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  19. G & H Repair & Services Co

    ActiveB General Building+2

    Chino Hills, CA · WC ✓ · 7 mi away

    CallAsk it
    Proof for G & H Repair & Services Co
    License
    CSLB 764841
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jun 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino Hills, CA · serves California
    Phone
    (909) 717-9693
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

  20. G P Heating & Cooling

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Yorba Linda, CA · WC ✓ · 9 mi away

    CallAsk it
    Proof for G P Heating & Cooling
    License
    CSLB 648720
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jun 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Yorba Linda, CA · serves California
    Phone
    (714) 726-5402
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

More cities in California

San Jose 304Los Angeles 293Sacramento 279San Diego 269Riverside 226Bakersfield 194Fresno 188Anaheim 168Glendale 129El Cajon 126Corona 122San Francisco 116Escondido 103Modesto 101Stockton 98Simi Valley 93

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