What should an inspector check for regarding water heaters?

An inspector should check for proper installation and the temperature and pressure relief valve because these aspects are critical for the safe operation of a water heater. Proper installation ensures that the water heater functions efficiently and minimizes the risk of leaks or failures. The temperature and pressure relief valve is a crucial safety feature designed to prevent excessive pressure buildup within the tank, which could lead to dangerous explosions. Inspecting this valve for proper functioning and accessibility is vital to ensuring that the water heater operates safely and meets local building codes.

In contrast, while regular maintenance and usage instructions are important, they do not directly impact the immediate safety and functionality that an inspector needs to assess at the time of inspection. Water quality and aesthetic features, although they can influence the overall experience with the water heater, are not primary concerns for an inspector focused on safety and code compliance. Lastly, while manufacturer recommendations and warranty status are relevant for understanding the water heater's performance expectations and protection, they are secondary to immediate safety features like installation and the functioning of safety valves. Thus, focusing on proper installation and the temperature and pressure relief valve is essential for ensuring the water heater's safe operation.