John Charles Renna
22+ yrsLakeland, FL 33811
CAC1813940 · licensed since 2004
Certified/Registered Air Conditioning or Mechanical Contractor · Lakeland, FL
| License number | CAC1813849 |
| License type | CAC — Certified/Registered Air Conditioning or Mechanical Contractor |
| License holder | William M Lynn |
| Location | 3326 West 10th St, Lakeland, FL 33810 |
| Licensed since | 2004 |
| License expires | 08/31/2028 |
| Status in DBPR records | Current, Active (as of 2026-08-11) |
Verify license CAC1813849 on the official Florida DBPR site ↗
Marshall'S, LLC holds Florida licence CAC1813849, a CAC classification which authorises work as a certified/registered air conditioning or mechanical contractor. A "C" prefix means the licence is certified — valid anywhere in Florida.
This licence was first issued in 2004, which makes it a long-held licence for the trade in this area. Roughly 19% of the 330 active hvac & ac repair licences based in the Lakeland & Winter Haven area were issued earlier than this one, and the local median sits at 2017. That is 22 years of continuous licensure.
Marshall'S, LLC is one of 150 active hvac & ac repair licences registered to an address in Lakeland, so you have local alternatives to compare quotes against. William M Lynn additionally holds 2 other active Florida licences in our records, which can indicate a contractor qualified across more than one trade or entity.
The licence is recorded as expiring on 08/31/2028. Florida licences renew on a fixed cycle, and a licence that is not renewed moves to delinquent status — which is why the expiry date matters if you are planning work close to that date. Confirm the current status on the state portal before signing a contract.
This page is generated from Florida DBPR public license records and is shown for consumer-protection purposes. Marshall'S, LLC has not claimed this page, is not a sponsor, and no endorsement is implied. Figures comparing this licence to others are calculated from the same public dataset, last refreshed 2026-08-11. Always re-verify license status and insurance directly before hiring.
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Marshall'S, LLC is #70 of 330 hvac & air conditioning contractors in Lakeland & Winter Haven by length of licensure — that places this record on page 2 of the Lakeland & Winter Haven list.
Florida records these licences under the same qualifying agent name. A single qualifying agent can hold licences across several trades or entities, so this is a name match in the public register — not proof that the same person or business is behind each one.
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