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California contractor license

Aaron's Mechanical Heating And Cooling

Aaron's Mechanical Heating And Cooling of Redwood City holds California license 1054483 (A General Engineering, C20 Warm-Air Heating, Ventilating and Air-Conditioning, C36 Plumbing). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Dec 31, 2027.

Doing business as Mario's Plumbing And Drains Inc.

Active

  • Workers' comp ends Dec 1, 2026 (31 days)

Aaron's Mechanical Heating And Cooling, Redwood City

License
1054483
Class
A General Engineering; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
Expires
Dec 31, 2027
Bond
$25,000
Workers' comp
Insured to Dec 1, 2026

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
$25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from Dec 1, 2025, to Dec 1, 2026

Who is on this license?

Responsible managing officer, CEO and president
Mario R. GarciaSince Jun 10, 2019
Responsible managing officer
Aaron I. Garcia LopezSince May 23, 2023

What work does this license cover?

Issued Jun 10, 2019. Reissued Dec 27, 2021.

Which other Redwood City businesses hold A General Engineering?

California plumbing contractorsCalifornia HVAC contractors

What should you check before hiring?

What to ask before you hire

  1. Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
  2. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  3. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  4. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  5. 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.
  6. 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

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. 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.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 31, 2026)
  2. Contractors State License Board (CSLB)