licensed-tx

Texas HVAC Contractor › Denton County

Harald Ernest KOCH

Apache Service Company

Harald Ernest KOCH holds licenses across 2 Texas trades — HVAC Contractor and Master Electrician under TDLR License #10596. The license is registered in Denton County, Texas. Current status: active.

Verification record

License #10596

  • HVAC Contractor

    A/C Contractor · Expires May 15, 2027

    Active

  • Master Electrician

    Master Electrician · Expires April 8, 2027

    Active
Years in TDLR record
0
TDLR trades held
2
Tenure rank, HVAC Contractors in Denton
#10

Scope of work

What these licenses authorize

HVAC Contractor

An HVAC Contractor license authorizes a business to install, alter, repair, and service air conditioning and refrigeration equipment in Texas. A Class A license covers equipment over 25 tons; Class B covers under 25 tons. The contractor must designate a Responsible A/C Contractor whose name backs the license and is named on every contract. The license does not cover gas-fired equipment outside the HVAC system, electrical work beyond the unit disconnect, or refrigerant handling for technicians, which requires federal EPA Section 608 certification.

Master Electrician

A Master Electrician license authorizes the holder to design, install, alter, and supervise all classes of electrical work in Texas, including the authority to qualify an Electrical Contractor business. The license is the highest individual electrical tier issued by TDLR. To qualify, an applicant must hold a Journeyman Electrician license, accumulate two years of journeyman experience, and pass the master exam. Annual renewal requires four hours of continuing education on the current National Electrical Code.

Source

Published from the Texas Department of Licensing & Regulation All Licenses dataset. Record last changed · last verified against TDLR .

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