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Licensed HVAC contractors in Oceanside
39 contractors with a Oceanside mailing address hold an active (CLEAR) CSLB C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) license in CSLB's license file dated Oct 20, 2026. 39 of them show a workers' comp policy on file. Get quotes from up to 3 of them →
Heating and air conditioning work calls for a C-20 license. CSLB requires C-20 licensees to carry workers' compensation even if they have no employees, so check that a policy is on file.
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A Featured spot on this hvac page for Oceanside is a paid ad for a License Verified contractor, labeled "Ad" every time. It sits apart from the directory and never changes the order below. From $49/mo. Join the waitlist →
All 39 licensed HVAC contractors
Order: A–Z by business name (neutral, stated). Showing 1–39. A/C DOCTORS TV INC
C-20 · also C-4, C-38 · Lic. #981124 · Oceanside 92058
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
AAA QUALITY HEATING AND COOLING INC
C-20 · Lic. #1111629 · Oceanside 92056
Workers' comp policy on file
Active — CSLB flag: workers' comp suspension pending
AG COASTAL HEATING AND AIR LLC
C-20 · Lic. #1160176 · Oceanside 92054
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
AIR TIME HEATING & AIR
C-20 · Lic. #860177 · Oceanside 92057
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
AIRTIME PLUMBING HEATING AND AIR
C-20 · also C-36 · Lic. #1082832 · Oceanside 92057
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ALL CLIMATE HEATING & AIR INC
C-20 · Lic. #988693 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ALL DAY HEATING AND AIR CONDITIONING LLC
C-20 · Lic. #1048737 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ALL PRO PLUMBING, HEATING, AIR CONDITIONING ELECTRICAL AND BACKFL
C-20 · also C-10, C-36 · Lic. #961770 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
AMBIENT HEATING AND AIR CONDITIONING
C-20 · Lic. #1073232 · Oceanside 92054
Workers' comp policy on file
Active — CSLB flag: workers' comp suspension pending
AMERICAN PLUMBING HEATING & AIR CONDITIONING
C-20 · also C-36 · Lic. #869690 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ARTISAN SHEET METAL CO OF OCEANSIDE INC
C-20 · also C-43 · Lic. #960556 · Oceanside 92054
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
BAKER AIR CONDITIONING
C-20 · Lic. #601408 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
CALIFORNIA MECHANICAL SYSTEMS INC
C-20 · Lic. #1116731 · Oceanside 92058
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
COMFORT MAVERICK HEATING AND AIR-CONDITIONING
C-20 · Lic. #1145040 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
DEWILDT ENVIRONMENTAL INC
C-20 · also C-38 · Lic. #749748 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
EARTH AIR SYSTEMS
C-20 · Lic. #1103686 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ENDLESS SUMMER HEATING & AIR CONDITIONING INC
C-20 · also B · Lic. #914490 · Oceanside 92058
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
GRAUL MECHANICAL INC
C-20 · Lic. #1138793 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
H & A HEATING AND AIR INC
C-20 · Lic. #908034 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
H V A C MECHANALYSIS INC
C-20 · Lic. #812735 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
HR PLUMBING INC
C-20 · also A, B, C-36 · Lic. #970044 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ITS FIXD PLUMBING HEATING & AIR SERVICES
C-20 · also C-36 · Lic. #870474 · Oceanside 92056
Workers' comp policy on file
Active — CSLB flag: workers' comp suspension pending
JJ PLUMBING HEAT AND AIR
C-20 · also C-36 · Lic. #1031151 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
LAMBERT AIR CONDITIONING AND CONSTRUCTION
C-20 · also B · Lic. #608692 · Oceanside 92057
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MAJOR LEAGUE COMFORT SYSTEMS
C-20 · Lic. #984731 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MANNINO HEATING & COOLING
C-20 · Lic. #849183 · Oceanside 92057
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MECHANICAL HVAC SOLUTIONS
C-20 · Lic. #1034572 · Oceanside 92057
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
NOWAKOWSKI INC
C-20 · also C-36 · Lic. #1118230 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PACIFIC COAST HEATING & AIR CONDITIONING INC
C-20 · Lic. #737889 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PERSONAL PLUMBING INC
C-20 · also C-10, C-36 · Lic. #982295 · Oceanside 92058
Workers' comp policy on file
Active — CSLB flag: workers' comp suspension pending
SAN DIEGO'S GREEN HVAC COMPANY
C-20 · Lic. #1091315 · Oceanside 92054
Workers' comp policy on file
Active — CSLB flag: workers' comp suspension pending
SEASIDE HEATING & AIR CONDITIONING INC
C-20 · also C-4, C-38 · Lic. #790514 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SHIDELER PLUMBING
C-20 · also C-36 · Lic. #1003737 · Oceanside 92054
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
STERLING MECHANICAL
C-20 · Lic. #1003161 · Oceanside 92057
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SYNERGY COMPANIES
C-20 · also ASB, B, C-2, C-10… · Lic. #835016 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
THAT'S NICE HEATING & AIR CONDITIONING
C-20 · Lic. #953390 · Oceanside 92058
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
THOMPSON PLUMBING HEATING AND AIR CONDITIONING
C-20 · also C-36 · Lic. #974400 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
VETERANS HEATING AND AIR CONDITIONING PLUMBING AND ELECTRICAL
C-20 · also C-10 · Lic. #1125538 · Oceanside 92054
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
WR ROBBINS COMPANY
C-20 · Lic. #890971 · Oceanside 92056
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026