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Best Licensed Solar Contractors in Walnut, CA

4 solar companies registered in Walnut hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 4 companies registered in Walnut. 4 passed license verification. All 4 are listed below. Our methodology

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  1. 1.Lumenexx

    ✓ CSLB License #1114147 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2023
    Phone
    (909) 530-0355

  2. 2.Expert Hvac Service Inc.

    ✓ CSLB License #1115612 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2024
    Phone
    (626) 537-5916

  3. 3.Add Solar

    ✓ CSLB License #971379 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2012
    Phone
    (909) 952-7842

  4. 4.J Aircon Inc.

    ✓ CSLB License #1107914 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2023
    Phone
    (626) 890-9109

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Lumenexx#1114147On file2023
Expert Hvac Service Inc.#1115612On file2024
Add Solar#971379Exempt or none on file2012
J Aircon Inc.#1107914Expired on file2023

Los Angeles County solar licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 179 active C-46 solar licenses in Los Angeles County, 4 of them registered in Walnut. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Walnut license has been held 2 years, and the longest-standing one dates to 2012. 2 of Walnut's 4 licenses (50.0%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 179 of the county's 179 licenses carry the same $25,000 bond California sets by statute. 20 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.

Solar Contractors in Walnut: common questions

How many licensed solar contractors are there in Walnut?

4 active C-46 solar licenses are registered in Walnut, out of 179 across Los Angeles County. 4 Walnut-registered companies passed our license verification, and all 4 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license solar contractors?

Yes. California licenses contractors by classification, and C-46 is the CSLB classification that authorises this work. 4 active C-46 solar licenses are registered in Walnut and 179 across Los Angeles County, the longest-standing issued in 2012. Only CLEAR, unexpired licenses appear here.

How do I check a solar 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 2 of Walnut's 4 currently carry. 20 Los Angeles County licenses expire within 90 days.

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