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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. Inland Air Balance Inc

    ActiveD62 Air and Water Balancing

    San Dimas, CA · WC ✓ · 7 mi away

    Proof for Inland Air Balance Inc
    License
    CSLB 837772
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    D62 Air and Water Balancing
    Expires
    Oct 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    San Dimas, CA · serves California
    Phone
    (909) 305-4881
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  2. Integrity Mechanical Corporation

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Chino Hills, CA · WC ✓ · 7 mi away

    Proof for Integrity Mechanical Corporation
    License
    CSLB 874247
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Nov 30, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino Hills, CA · serves California
    Phone
    (909) 591-8631
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  3. Intuit Mechanical Solutions Inc

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Covina, CA · WC ✓ · 7 mi away

    Proof for Intuit Mechanical Solutions Inc
    License
    CSLB 1138206
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    May 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Covina, CA · serves California
    Phone
    (626) 353-7213
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  4. It Construction

    ActiveB General Building+4

    Chino, CA · WC ✓ · 8 mi away

    Proof for It Construction
    License
    CSLB 773671
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C33 Painting and Decorating; C54 Ceramic and Mosaic Tile
    Expires
    Sep 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino, CA · serves California
    Phone
    (909) 902-4385
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  5. J a C

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Chino Hills, CA · WC ✓ · 7 mi away

    Proof for J a C
    License
    CSLB 765922
    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
    Chino Hills, CA · serves California
    Phone
    (714) 697-8489
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  6. J B Kitchens Baths & Design Inc

    ActiveB General Building+2

    San Dimas, CA · WC ✓ · 7 mi away

    Proof for J B Kitchens Baths & Design Inc
    License
    CSLB 730976
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
    Expires
    Jan 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    San Dimas, CA · serves California
    Phone
    (909) 394-9545
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  7. J D H Electric Inc

    ActiveB General Building+2

    West Covina, CA · WC ✓ · 6 mi away

    Proof for J D H Electric Inc
    License
    CSLB 1038697
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Apr 30, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    West Covina, CA · serves California
    Phone
    (626) 616-0861
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  8. J I G Plumbing Inc

    ActiveB General Building+2

    Chino, CA · WC ✓ · 8 mi away

    Proof for J I G Plumbing Inc
    License
    CSLB 958469
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    B General Building; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
    Expires
    Apr 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino, CA · serves California
    Phone
    (909) 354-6855
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  9. J M L Mechanical

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Placentia, CA · WC ✓ · 9 mi away

    Proof for J M L Mechanical
    License
    CSLB 1030697
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Sep 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Placentia, CA · serves California
    Phone
    (714) 765-9533
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  10. J M Professional Plumbing

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

    Fullerton, CA · WC ✓ · 10 mi away

    Proof for J M Professional Plumbing
    License
    CSLB 828995
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
    Expires
    Dec 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Fullerton, CA · serves California
    Phone
    (714) 608-5896
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  11. J N Centrifugal Technology

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Chino Hills, CA · WC ✓ · 7 mi away

    Proof for J N Centrifugal Technology
    License
    CSLB 1140447
    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
    Chino Hills, CA · serves California
    Phone
    (424) 278-8609
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  12. J R Stevens Mechanical Inc

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Placentia, CA · WC ✓ · 9 mi away

    Proof for J R Stevens Mechanical Inc
    License
    CSLB 753560
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jun 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Placentia, CA · serves California
    Phone
    (714) 890-0952
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  13. J T Air Conditioning & Heating Inc

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    LA Puente, CA · WC ✓ · 7 mi away

    Proof for J T Air Conditioning & Heating Inc
    License
    CSLB 961269
    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
    LA Puente, CA · serves California
    Phone
    (626) 537-5323
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  14. Jc A/C Aire Services HVAC

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    West Covina, CA · WC ✓ · 6 mi away

    Proof for Jc A/C Aire Services HVAC
    License
    CSLB 1131565
    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
    West Covina, CA · serves California
    Phone
    (626) 625-1792
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  15. Jesse's Electrical Service

    ActiveC10 Electrical+1

    Chino, CA · WC ✓ · 8 mi away

    Proof for Jesse's Electrical Service
    License
    CSLB 682625
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Dec 31, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino, CA · serves California
    Phone
    (909) 815-7711
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  16. Ji Xiang

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Rowland Heights, CA · WC ✓ · 5 mi away

    Proof for Ji Xiang
    License
    CSLB 1105597
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Jun 30, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Rowland Heights, CA · serves California
    Phone
    (626) 391-0412
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  17. Jj & J Air Conditioning Corp

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Chino, CA · WC ✓ · 8 mi away

    Proof for Jj & J Air Conditioning Corp
    License
    CSLB 1064651
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Mar 31, 2028
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Chino, CA · serves California
    Phone
    (714) 599-2743
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  18. Jm Mechanical Solutions Corp

    ActiveC20 Warm-Air Heating, Ventilating and Air-Conditioning

    Pomona, CA · WC ✓ · 7 mi away

    Proof for Jm Mechanical Solutions Corp
    License
    CSLB 1129328
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    C20 Warm-Air Heating, Ventilating and Air-Conditioning
    Expires
    Nov 30, 2026
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Pomona, CA · serves California
    Phone
    (805) 796-4877
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  19. Jn Construction Inc

    ActiveA General Engineering+5

    Ontario, CA · WC ✓ · 9 mi away

    Proof for Jn Construction Inc
    License
    CSLB 1001396
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    A General Engineering; B General Building; C10 Electrical; C16 Fire Protection; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
    Expires
    Feb 28, 2027
    Checked
    Oct 24, 2026
    Workers' comp
    Workers' comp on file
    Where
    Ontario, CA · serves California
    Phone
    (323) 378-0109
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record
  20. John's Mechanical Services

    ActiveC10 Electrical+1

    Hacienda Heights, CA · WC ✓ · 9 mi away

    Proof for John's Mechanical Services
    License
    CSLB 512067
    Issuer
    California Contractors State License Board
    Status
    Active
    Class
    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
    Hacienda Heights, CA · serves California
    Phone
    (626) 674-0568
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → California Contractors State License Board record

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