Florida Licensed Pros

Maintenance Masters LLC

Active license

Certified/Registered Air Conditioning or Mechanical Contractor · Jacksonville, FL

License numberCAC057298
License typeCAC — Certified/Registered Air Conditioning or Mechanical Contractor
License holderAlvin Ernest Jr Knoepfel
Location5035 Sanibel Drive, Jacksonville, FL 32210
Licensed since1996
License expires08/31/2028
Status in DBPR recordsCurrent, Active (as of 2026-08-11)

Verify license CAC057298 on the official Florida DBPR site ↗

What this record tells you

Maintenance Masters LLC holds Florida licence CAC057298, 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 1996, which makes it one of the longest-held licences for the trade in this area. Roughly 13% of the 762 active hvac & ac repair licences based in the Jacksonville area were issued earlier than this one, and the local median sits at 2014. That is 30 years of continuous licensure.

Maintenance Masters LLC is one of 430 active hvac & ac repair licences registered to an address in Jacksonville, so you have local alternatives to compare quotes against. Alvin Ernest Jr Knoepfel additionally holds 1 other active Florida licence 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.

Before you hire Maintenance Masters LLC

  • Re-check licence CAC057298 on the DBPR portal — status can change any day.
  • Ask for a current certificate of liability insurance and workers' compensation, issued to you directly by their insurer.
  • Confirm the name on your contract matches Maintenance Masters LLC or its qualifying agent, Alvin Ernest Jr Knoepfel.
  • Compare at least three written quotes from other hvac & ac repair contractors in Jacksonville.
  • Confirm in writing that the contractor — not you — pulls the building permit.

This page is generated from Florida DBPR public license records and is shown for consumer-protection purposes. Maintenance Masters 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.

Other licensed hvac & air conditioning contractors near Jacksonville

Henry Ilano Papa

30+ yrs

Jacksonville, FL 32223

CAC057230 · licensed since 1996

See all hvac & air conditioning contractors in Jacksonville →

Maintenance Masters LLC is #105 of 762 hvac & air conditioning contractors in Jacksonville by length of licensure — that places this record on page 2 of the Jacksonville list.

Other licences under the name Alvin Ernest Jr Knoepfel

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.