How many hvac contractors are in ALTADENA, CA?

9 with a current California license, as of 2026-08-31.

How do I check a California contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the California CSLB licensee database.

HVAC contractors in ALTADENA, CA

9 listings

Source: California CSLB license records. Last verified 2026-08-31.

There are 9 hvac contractors in ALTADENA, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-08-31; every listing shows its own number and expiry date. All are drawn from the California CSLB register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
ACTION DUCT CLEANING COMPANY INC	570541	B, C-20, C-43, D62, D64	2027-06-30	ALTADENA	91001	Set up workspace
AIR CONDITIONING SOLUTIONS INC	863580	B, C-4, C-20, C-36, C-38	2027-08-31	ALTADENA	91001	Set up workspace
COMFORT HEATING & COOLING SYSTEMS	707692	C-20	2026-08-31	ALTADENA	91001	Set up workspace
GRUETER CONSTRUCTION CORP	416414	B, C-6, C-20	2028-04-30	ALTADENA	91001	Set up workspace
H & H MECHANICAL INC	644029	C-4, C-20	2026-12-31	ALTADENA	91001	Set up workspace
MICHAEL D HOWE	522867	C-10, C-20	2028-01-31	ALTADENA	91001	Set up workspace
PRIME AIR MECHANICAL INC	1112002	C-20	2027-10-31	ALTADENA	91001	Set up workspace
SIMCO MECHANICAL INC	974288	B, C-20, C-36	2028-06-30	ALTADENA	91001	Set up workspace
SMALLING MECHANICAL CO	956042	B, C-20	2026-12-31	ALTADENA	91001	Set up workspace

Quick answers

How many hvac contractors are in ALTADENA?: 9 with a current California license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the California CSLB licensee database.