Best Licensed HVAC Contractors in Altadena, CA
8 HVAC contractors registered in Altadena hold current CSLB licenses, verified against official records as of August 17, 2026. All 8 are listed below, ordered by years licensed.
How we chose: We identified 8 companies registered in Altadena. 8 passed license verification. All 8 are listed below. Our methodology
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- ✓ CSLB License #416414 - look up this number at CSLBInsured - OMAHA NATIONAL CASUALTY COMPANYBonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 1982
- Expires
- 2028-04-30
- Phone
- (626) 798-9525
- ✓ CSLB License #570541 - look up this number at CSLBInsured - STATE COMPENSATION INSURANCE FUNDBonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 1989
- Expires
- 2027-06-30
- Phone
- (626) 791-7870
- ✓ CSLB License #644029 - look up this number at CSLBInsured - MARKEL INSURANCE COMPANYBonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 1992
- Expires
- 2026-12-31
- Phone
- (626) 791-0968
- ✓ CSLB License #707692 - look up this number at CSLBInsured - PIE INSURANCE COMPANY (THE)Bonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 1995
- Expires
- 2026-08-31
- Phone
- (626) 644-1248
- ✓ CSLB License #863580 - look up this number at CSLBInsured - TRANSPORTATION INSURANCE COMPANYBonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-08-31
- Phone
- (626) 797-0547
- ✓ CSLB License #956042 - look up this number at CSLBInsured - CONTINENTAL CASUALTY COMPANYBonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 2010
- Expires
- 2026-12-31
- Phone
- (626) 404-6989
- ✓ CSLB License #974288 - look up this number at CSLBInsured - LIBERTY INSURANCE CORPORATIONBonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 2012
- Expires
- 2028-06-30
- Phone
- (818) 957-4994
- ✓ CSLB License #1112002 - look up this number at CSLBInsured - PIE INSURANCE COMPANY (THE)Bonded - $25,000
- Verified
- August 17, 2026
- Licensed since
- 2023
- Expires
- 2027-10-31
- Phone
- (626) 710-6876
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Grueter Construction Corp | #416414 | On file | 1982 |
| Action Duct Cleaning Company Inc. | #570541 | On file | 1989 |
| H & H Mechanical Inc. | #644029 | On file | 1992 |
| Comfort Heating & Cooling Systems | #707692 | On file | 1995 |
| Air Conditioning Solutions Inc. | #863580 | On file | 2005 |
| Smalling Mechanical Co | #956042 | On file | 2010 |