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Licensed Heating & Air Conditioning (C-20) contractors in San Marcos, CA

The California Contractors State License Board (CSLB) lists 18 Heating & Air Conditioning (C-20) contractors in San Marcos, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

18 contractors

  1. Action Air Conditioning And Heating
    San Marcos, CA · CSLB #1083840 · as of June 27, 2026
    Active · clear
  2. Acuna's Polar Aire
    San Marcos, CA · CSLB #352974 · as of June 27, 2026
    Active · clear
  3. Airwave Mechanical INC
    San Marcos, CA · CSLB #996826 · as of June 27, 2026
    Active · clear
  4. Altered Air
    San Marcos, CA · CSLB #531080 · as of June 27, 2026
    Active · clear
  5. Alve Mechanical
    San Marcos, CA · CSLB #935043 · as of June 27, 2026
    Active · clear
  6. American HVAC Technology
    San Marcos, CA · CSLB #1149594 · as of June 27, 2026
    Active · clear
  7. Better Air Systems
    San Marcos, CA · CSLB #977738 · as of June 27, 2026
    Active · clear
  8. Champion Air Conditioning & Heating
    San Marcos, CA · CSLB #960920 · as of June 27, 2026
    Active · clear
  9. C H C Refrigeration INC
    San Marcos, CA · CSLB #964103 · as of June 27, 2026
    Active · clear
  10. Excel Air CO
    San Marcos, CA · CSLB #781259 · as of June 27, 2026
    Active · clear
  11. Green Building Test & Balance CO
    San Marcos, CA · CSLB #805186 · as of June 27, 2026
    Active · clear
  12. Home Run Heating And Air Conditioning
    San Marcos, CA · CSLB #1141796 · as of June 27, 2026
    Active · clear
  13. Kihle's H V A C
    San Marcos, CA · CSLB #884617 · as of June 27, 2026
    Active · clear
  14. Oasis Plumbing Heating & Air Conditioning
    San Marcos, CA · CSLB #1093808 · as of June 27, 2026
    Active · clear
  15. Randle Air Conditioning INC
    San Marcos, CA · CSLB #782083 · as of June 27, 2026
    Active · clear
  16. San Marcos Heating & Air Conditioning
    San Marcos, CA · CSLB #459678 · as of June 27, 2026
    Active · clear
  17. Smart Decisions SDS INC
    San Marcos, CA · CSLB #1060126 · as of June 27, 2026
    Active · clear
  18. Total Home Comfort H V A C Services
    San Marcos, CA · CSLB #997944 · as of June 27, 2026
    Active · clear

See all Heating & Air Conditioning (C-20) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.

Licensed Heating & Air Conditioning (C-20) contractors in San Marcos, CA — IsItLicensed | IsItLicensed