D.L. Williams Heating & Cooling, LLC
State-Licensed A/C Contractor · FL #CAC1816913 (Certified — statewide)D.L. Williams Heating & Cooling, LLC, is a Florida-licensed air-conditioning contractor (DBPR license number CAC1816913) serving Lake City, Columbia County, and the surrounding area. The company holds a Certified license, which is a statewide credential allowing them to contract anywhere in Florida. This license has been active since 2011. As a Certified Air Conditioning Contractor, the business is authorized to perform HVAC work in compliance with Florida building codes. Homeowners and property owners seeking a licensed contractor for heating and cooling needs can verify the license status through the Florida DBPR.
License and training record
| License | CAC1816913 (certified air conditioning contractor) |
|---|---|
| First issued | September 14, 2011 |
| Status on November 9, 2026 | Active, expires August 31, 2028 |
| CE courses on file | 15 (102 hours) |
| Hours, Sep 2024 – Aug 2026 cycle | 14 |
| Board discipline reports, July 2021 – Nov 2026 | None listed |
wind mitigation and hurricane requirements
Most recent courses
- Contractors’ Complete Continuing August 2026 · 14 hrs
- Mini Split Troubleshooting February 2020 · 4 hrs
- 14 Hour Online Course for Florida Cilb August 2018 · 14 hrs
- 14 Hour Online Course a August 2016 · 14 hrs
- Construction Cost Strategy August 2014 · 4 hrs
Sources: Florida DBPR licensee roster and continuing-education course file, downloaded November 9, 2026; CILB discipline reports. Florida requires at least 14 hours of continuing education for each two-year renewal (F.S. 489.115). Verify this license at MyFloridaLicense.com.
Compare all 15 state-licensed air conditioning contractors in Lake City, with their training records, board discipline reports and Google ratings.

