Residential Building Inspector Practice Exam

Which of the following installations requires a permit?

1. Installing portable heating units

2. Replacing a ceiling lamp

3. Installing a through the window air conditioning unit

4. Installing a new central heating and cooling system

The correct answer is: Installing a new central heating and cooling system

The installation of a new central heating and cooling system requires a permit because it typically involves significant changes to a home's mechanical systems. Such installations must comply with mechanical codes and safety standards to ensure proper function and safety in the building. Permitting is essential not only for compliance with local regulations but also to ensure that the system is installed by qualified professionals who understand the complexities of HVAC systems. This process often includes inspections by building officials to verify that the installation meets all necessary codes, which helps to prevent potential hazards like improper ventilation or inadequate heating and cooling performance. In contrast, other options do not usually require permits due to the minor nature of the work involved. For instance, installing portable heating units or replacing a ceiling lamp involves relatively simple tasks that do not significantly alter the electrical or mechanical systems in the home. Similarly, installing a through the window air conditioning unit may also fall under minor alterations that typically do not necessitate a permit.