HVAC contractors in Casselberry: what Florida's license records show
Casselberry has 22 state-licensed HVAC contractors in current Florida DBPR records across Seminole County. 21 carry the statewide Certified (CAC class) credential, while 1 operate under Registered licenses tied to local jurisdictions.
Local experience runs deep: the oldest active credential was first issued in 1987, with an average license age of about 16 years. 18 of the 22 listed licenses are currently marked Active by the state. Each profile links the state license number, letting you confirm standing with Florida DBPR before signing anything.
Nearby HVAC coverage in Seminole County: Sanford · Longwood · Winter Springs · Altamonte Springs · Oviedo
What the records show about Casselberry's air conditioning contractors
18 air conditioning contractors with a Casselberry address hold an active Florida license today, and 18 of them have continuing-education courses on file with the state. 4 more licenses were not renewed at the August 31, 2026 deadline; those pages are labeled so you don't hire an unlicensed contractor by mistake.
Training on file for common jobs:
- Refrigerants: 3 contractors have coursework on file, including Master-Tech Service LLC, Zenit Service LLC and Jd'S Heating & Air Conditioning Inc.
- Indoor air quality and ventilation: 4 contractors have coursework on file, including Master-Tech Service LLC, Zenit Service LLC and After Hours Maintenance Inc.
- Energy efficiency: 7 contractors have coursework on file, including Master-Tech Service LLC, Zenit Service LLC and The Ground Up Contracting LLC.
- System design and ductwork: 3 contractors have coursework on file, including Master-Tech Service LLC, After Hours Maintenance Inc and Lj Air Inc.
Most-reviewed on Google as of September 2026: Air Flow Designs Inc (4.5 stars, 570 reviews), Gembecki Mechanical Services, Inc (4.8 stars, 376 reviews), Aloha Air (4.9 stars, 151 reviews), Master-Tech Service LLC (4.9 stars, 65 reviews) and Slebodnik Services Inc (4.6 stars, 28 reviews).
Longest-licensed: After Hours Maintenance Inc (since 1987), Jpi Mechanical Services Inc (since 2001) and Contemporary Air Service Inc (since 2002).
11 of the 18 have coursework on the 2023 Florida Building Code, the newest edition in the state course records.
None of the 18 active licenses appear in the Construction Industry Licensing Board's discipline reports since July 2021; each listing shows its own record.
Need a licensed HVAC contractor in Casselberry? Call (833) 652-9212 to be connected now.
Compare 22 state-licensed A/C and heating contractors in Casselberry, FL — each matched to a verifiable Florida DBPR air-conditioning contractor license. Check license type and status, then request HVAC quotes, all verified against the Florida state license database.
