How many hvac contractors are in ONTARIO, CA?

58 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 ONTARIO, CA

58 listings

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

There are 58 hvac contractors in ONTARIO, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-10-31; 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
AA HVAC INC	1057513	C-20	2027-08-31	ONTARIO	91761	Set up workspace
ADAPTIVE CONTROLS SERVICES	1116142	C-20	2028-02-29	ONTARIO	91761	Set up workspace
A G HEATING & AIR	1132532	C-20	2027-02-28	ONTARIO	91764	Set up workspace
AIR BEE HVAC	1158451	C-20	2028-07-31	ONTARIO	91762	Set up workspace
AIR CONTROL SPECIALTIES INC	570881	C-20	2027-03-31	ONTARIO	91761	Set up workspace
AIR CONTROL SYSTEMS INC	639003	C-2, C-20	2028-03-31	ONTARIO	91761	Set up workspace
AIRITE HEATING AND AIR CONDITIONING INC	232930	C-4, C-20, C-38	2026-10-31	ONTARIO	91762	Set up workspace
AIRTONG HEATING & COOLING	991016	C-20	2028-03-31	ONTARIO	91761	Set up workspace
ALL PRO COOLING HEATING PLUMBING & ELECTRICAL	1103983	C-10, C-20, C-36	2027-04-30	ONTARIO	91761	Set up workspace
AMERICAN STAINLESS	1085845	C-43, D12, D24, D34	2028-01-31	ONTARIO	91761	Set up workspace
AMJ MECHANICAL	1031031	C-10, C-20, D35	2027-09-30	ONTARIO	91761	Set up workspace
ANSARY ABOUBAKARE	1042235	B, C-20, C-38	2028-07-31	ONTARIO	91761	Set up workspace
BRIAN YAWCHING KAO	897876	B, C-10, C-20, C-36	2027-06-30	ONTARIO	91764	Set up workspace
CHINO VALLEY REFRIGERATION	570810	C-10, C-38	2027-09-30	ONTARIO	91762	Set up workspace
CHUN LI	1054025	C-20	2027-05-31	ONTARIO	91761	Set up workspace
CUSTOM HOMES CONTRACTOR DBA CUSTOM HOMES CONSTRUCTION	1045173	B, C-20, C-38	2026-10-31	ONTARIO	91761	Set up workspace
DAO LE	864673	C-20	2027-09-30	ONTARIO	91762	Set up workspace
DIAMOND AIR SERVICES INC	1047483	B, C-20, C-43	2027-11-30	ONTARIO	91761	Set up workspace
DS HVAC INC	1132699	C-20	2027-02-28	ONTARIO	91762	Set up workspace
DSS HIGH PERFORMANCE HVAC SOLUTIONS	1158389	C-20	2028-07-31	ONTARIO	91762	Set up workspace
EFFINA	1150901	C-20	2028-02-29	ONTARIO	91761	Set up workspace
ELITE PRECISION AIR SYSTEMS	1139417	C-20	2027-06-30	ONTARIO	91761	Set up workspace
EMPIRE SHEET METAL INC	759685	C-43	2026-10-31	ONTARIO	91761	Set up workspace
ERWIN ADVANCED AIR SYSTEMS	897796	C-20	2027-06-30	ONTARIO	91761	Set up workspace
FOOTHILL HEATING & AIR CONDITIONING	979917	C-20	2027-01-31	ONTARIO	91764	Set up workspace
GET IT REPAIRED HEATING AND AIR INC	1155418	C-20	2028-05-31	ONTARIO	91762	Set up workspace
GOOD TEMPERATURE	916498	C-38	2028-05-31	ONTARIO	91761	Set up workspace
HIGH SPEED ROOTER AND PLUMBING INC	1017796	A, C-10, C-20, C-36, C-42	2028-08-31	ONTARIO	91762	Set up workspace
HO SOO YOO	703553	B, C-10, C-36, C-38	2027-03-31	ONTARIO	91762	Set up workspace
INTER-CITY ENERGY SYSTEMS INC	587709	B, C-10, C-20, C-36	2028-02-29	ONTARIO	91764	Set up workspace
JASON JANG	1035039	C-20	2028-01-31	ONTARIO	91764	Set up workspace
JC CUSTOM SHEET METAL LLC	1144832	C-43	2027-10-31	ONTARIO	91761	Set up workspace
JESSE'S AIR SYSTEMS A / C & HEATING	864645	C-20	2027-09-30	ONTARIO	91761	Set up workspace
JN CONSTRUCTION INC	1001396	A, B, C-10, C-16, C-20, C-36	2027-02-28	ONTARIO	91762	Set up workspace
JULAN HAO	1083815	C-20	2027-11-30	ONTARIO	91761	Set up workspace
JULIO ANTONIO CASTILLO	844311	C-10, C-20	2028-08-31	ONTARIO	91764	Set up workspace
JUST EVERYTHING HEATING & AIR INC	892799	C-20	2027-08-31	ONTARIO	91762	Set up workspace
JUST TEMPERATURE INC	1062818	C-20	2028-01-31	ONTARIO	91762	Set up workspace
K N J M CHILLER SERVICES INC	1014147	C-38	2028-05-31	ONTARIO	91764	Set up workspace
MAGNISON AND MOEN INC	264898	C-20	2026-10-31	ONTARIO	91761	Set up workspace
MARCOS AIR CONDITIONING	950285	C-20	2028-07-31	ONTARIO	91761	Set up workspace
MASTER CHILL HEATING AND AIR	1138989	C-20	2027-06-30	ONTARIO	91762	Set up workspace
MECHANICAL CONTROL	1019123	C-20	2026-10-31	ONTARIO	91762	Set up workspace
METAL ENGINEERING & MFG	409730	C-43	2027-07-31	ONTARIO	91761	Set up workspace
MYCO CONSTRUCTION	853581	B, C-17, C-20, C-27, C-33, C-39	2027-11-30	ONTARIO	91761	Set up workspace
NICK AIR CONDITIONING INC	1135910	C-20	2027-04-30	ONTARIO	91761	Set up workspace
NORTHSTAR PHAC INC	916254	C-20, C-36	2028-02-29	ONTARIO	91761	Set up workspace
NORTON GENERAL CONTRACTORS	909595	B, C-10, C-20	2028-01-31	ONTARIO	91764	Set up workspace
ONTARIO REFRIGERATION COMMERCIAL AIR CONDITIONING HEATING & CONTR	315638	C-20, C-38	2027-02-28	ONTARIO	91762	Set up workspace
PHILLIP PARK	1102884	C-20	2027-03-31	ONTARIO	91761	Set up workspace

Showing 1–50 of 58

Quick answers

How many hvac contractors are in ONTARIO?: 58 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.