Best Licensed HVAC Contractors in Mountain House, CA
3 HVAC contractors registered in Mountain House hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by years licensed.
- 177 active C-20 heating and air conditioning licenses in San Joaquin County; 3 registered in Mountain House
- California requires workers' compensation cover for C-20 licensees: 2 of Mountain House's 3 licenses (66.7%) carry a current policy with CSLB
- Median time licensed in Mountain House: 3 years
- Longest Mountain House licensure: since 2023
- 16 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2023
- Expires
- 2027-05-31
- Phone
- (425) 505-0850
- Verified
- August 17, 2026
- Licensed since
- 2023
- Expires
- 2027-08-31
- Phone
- (209) 640-9497
- Verified
- August 17, 2026
- Licensed since
- 2026
- Expires
- 2028-05-31
- Phone
- (209) 618-6077
Compare the top 3 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Trusted Heating, Cooling & Construction | #1105353 | On file | 2023 |
| Es Mechanical LLC | #1107929 | Expired on file | 2023 |
| Kostas Hvac Inc. | #1155237 | On file | 2026 |
San Joaquin County HVAC licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 177 active C-20 heating and air conditioning licenses in San Joaquin County, 3 of them registered in Mountain House. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Mountain House license has been held 3 years, and the longest-standing one dates to 2023. California law requires workers' compensation cover for C-20 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 2 of Mountain House's 3 licenses (66.7%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 177 of the county's 177 licenses carry the same $25,000 bond California sets by statute. 16 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
HVAC Contractors in Mountain House: common questions
How many licensed HVAC contractors are there in Mountain House?
3 active C-20 heating and air conditioning licenses are registered in Mountain House, out of 177 across San Joaquin County. 3 Mountain House-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license HVAC contractors?
Yes. California licenses contractors by classification, and C-20 is the CSLB classification that authorises this work. 3 active C-20 heating and air conditioning licenses are registered in Mountain House and 177 across San Joaquin County, the longest-standing issued in 2023. Only CLEAR, unexpired licenses appear here.
How do I check an HVAC contractor's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which California requires of C-20 licensees and 2 of Mountain House's 3 currently carry. 16 San Joaquin County licenses expire within 90 days.