Reason for Credential: Pursuant s. 101.88 (2), Stats., no person may conduct the inspection of one- and two-family dwellings for the purpose of administering and enforcing ch. Comm 23 unless the person holds a credential issued by the department as a certified UDC-HVAC inspector.Requirements of Credential: A person who inspects one- and two-family dwellings as a certified UDC-HVAC inspector shall:- Maintain a record of the inspections made, including the date and the findings of the inspections;- Provide a copy of the inspection report to the property owner or his or her agent, and- Make available to the department upon request his or her inspection records.A person who holds the credential shall carry on his or her person the credential issued by the department while performing or conducting the activity or activities permitted under the credential.Qualifications for Examination: In order to obtain the credential the applicant must obtain a score of at least 70% on an examination. The exam will cover chapter Comm 5 of the Wisconsin Administrative Code and chapters Comm 20, 22, 23, and appendix of the Uniform Dwelling Code (UDC). This exam is open book. Copies of current code books may be obtained from Document Sales @ (608) 266-3358 or @ (800) 362-7253. Exams are updated the month after any code changes.The Division offers an explanatory UDC Code and Commentary that may be used to study for the exam. It also may be ordered from Document Sales @ (608) 266-3358 or @ (800) 362-7253. It is intended to be a training guide and may not match the current code.