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California contractor license
I C M Mechanical Inc
I C M Mechanical Inc of Shingle Springs holds California license 603842 (C20 Warm-Air Heating, Ventilating and Air-Conditioning). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Nov 30, 2026.
Licensed 36 years, longer than 88% of 7,822 active California HVAC contractors.
Active
- License ends Nov 30, 2026 (30 days)
I C M Mechanical Inc, Shingle Springs
- License
- 603842
- Class
- C20 Warm-Air Heating, Ventilating and Air-Conditioning
- Expires
- Nov 30, 2026
- Bond
- $25,000
- Workers' comp
- Insured to Aug 28, 2027
CSLB file dated Oct 31, 2026
From the CSLB file dated Oct 31, 2026. Not a consumer report; check the board before you hire.
Has the board taken action on this license?
None in the CSLB file dated Oct 31, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000Western Surety Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredRepublic Indemnity Company Of America, from Aug 28, 2026, to Aug 28, 2027
Who is on this license?
- Officer
- Christina D. MercerSince Nov 29, 2004
- Responsible managing officer, CEO and president
- Dwayne L. MercerSince Oct 2, 1990
What work does this license cover?
Issued Oct 2, 1990. Inactive Aug 24, 1994 to Aug 14, 1995. Reissued Nov 6, 2002.
Which other Shingle Springs businesses hold C20 Warm-Air Heating, Ventilating and Air-Conditioning?
- Alpine Heating And Air Conditioning IncLicensed since 2004
- Good Guys Heating & CoolingLicensed since 2019
- Cal Air SystemsLicensed since 2021
- HVAC ServicesLicensed since 2025
- Hooper Heating And Air LLCLicensed since 2025
What should you check before hiring?
What to ask before you hire
- Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
- Get the license number in writing. The name on the license should match the name on your contract and invoice.
- Check the class covers the job. A license for one trade doesn't cover another. California license classes
- Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
- Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
- Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.
If the license is lapsed
- Don't sign or pay a deposit until the CSLB shows the license active again.
- Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
- Check another contractor. California license lookup
Sources
- CSLB License Master (cslb.ca.gov, Oct 31, 2026)
- Contractors State License Board (CSLB)