How many hvac contractors are in DIAMOND BAR, CA?

32 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 DIAMOND BAR, CA

32 listings

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

There are 32 hvac contractors in DIAMOND BAR, 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
ACE RODIL HEATING AND AIR CONDITIONING	631042	C-20	2027-10-31	DIAMOND BAR	91765	Set up workspace
AC HEAT DIAMOND BAR	1145762	C-20	2027-10-31	DIAMOND BAR	91765	Set up workspace
AIRPROPOWER	1150732	C-10, C-20	2028-02-29	DIAMOND BAR	91765	Set up workspace
ALLWAYZ HEATING & AIR CONDITIONING INC	1097372	C-20	2026-10-31	DIAMOND BAR	91765	Set up workspace
ATLANTIC AIR CONDITIONING INC	613226	C-20	2027-03-31	DIAMOND BAR	91765	Set up workspace
AVEO INC	969881	A, B, C-10, C-20, C-36	2028-02-29	DIAMOND BAR	91765	Set up workspace
CHUNG CHIEH WU	1105504	C-20	2027-06-30	DIAMOND BAR	91765	Set up workspace
CIEL AIR CONDITIONING AND ELECTRIC	1039457	C-10, C-20	2028-05-31	DIAMOND BAR	91765	Set up workspace
CLIMATE SPECIALISTS	1003654	C-20	2027-05-31	DIAMOND BAR	91765	Set up workspace
C S D M INC DBA CAL STEAM COMPANY	674646	C-4, C-20, C-36	2027-04-30	DIAMOND BAR	91765	Set up workspace
DK AIR & REFRIGERATION	1123000	C-38	2028-06-30	DIAMOND BAR	91765	Set up workspace
FOUR SEASONS AIR CONDITIONING AND HEATING	966880	C-20	2027-10-31	DIAMOND BAR	91765	Set up workspace
GREEN AIR & REFRIGERATION	839148	C-20, C-38	2027-06-30	DIAMOND BAR	91765	Set up workspace
HIGH NOON AIR	1085441	C-20, C-38	2027-12-31	DIAMOND BAR	91765	Set up workspace
HJR CONTRACTING INC	1041548	B, C-20	2028-07-31	DIAMOND BAR	91765	Set up workspace
HONEST PRO AIR CONDITIONING AND HEATING	1106190	C-20	2027-06-30	DIAMOND BAR	91765	Set up workspace
KENNETH DALEY HEATING & AIR SERVICES	798187	C-20, C-36	2027-08-31	DIAMOND BAR	91765	Set up workspace
LANYI USA INC	1121762	C-20	2028-06-30	DIAMOND BAR	91765	Set up workspace
L B AIR CONDITIONING	1072480	C-20	2027-01-31	DIAMOND BAR	91765	Set up workspace
LIKAI CHEN HVAC INC	926434	C-20	2027-12-31	DIAMOND BAR	91765	Set up workspace
MAC REFRIGERATION AND AIR CONDITIONING CO	580557	C-20	2027-11-30	DIAMOND BAR	91765	Set up workspace
MCMASTER MECHANICAL	879152	C-20	2027-02-28	DIAMOND BAR	91765	Set up workspace
MEDRARA HVAC	1042958	C-20	2028-08-31	DIAMOND BAR	91765	Set up workspace
MR A/C	864636	C-20	2027-09-30	DIAMOND BAR	91765	Set up workspace
PLHK HVAC INC	1151997	C-20	2028-03-31	DIAMOND BAR	91765	Set up workspace
RAUL MANUEL MAGANA	1005647	B, C-20	2027-07-31	DIAMOND BAR	91765	Set up workspace
SERVICE WIZARDS	797071	C-20, C-36, C-42	2027-07-31	DIAMOND BAR	91765	Set up workspace
YQ AIR CONDITION SOLUTION	1077548	C-20	2027-06-30	DIAMOND BAR	91765	Set up workspace
YUZE AIR CONDITIONING	1086305	C-20	2028-01-31	DIAMOND BAR	91765	Set up workspace
ZHUOXIN CONSTRUCTION	1116182	B, C-10, C-20	2028-02-29	DIAMOND BAR	91765	Set up workspace
ZIP RENOVATION & AIR	762505	B, C-10, C-15, C-20, C-36	2027-05-31	DIAMOND BAR	91765	Set up workspace
ZY HVAC EQUIPMENT SERVICES	1133374	C-20	2027-02-28	DIAMOND BAR	91789	Set up workspace

Quick answers

How many hvac contractors are in DIAMOND BAR?: 32 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.