Final answer:
Ducts of bathroom exhaust and heaters that do not terminate outside the building should be vented to the outside to prevent the buildup of indoor air pollutants.
Step-by-step explanation:
In the case of bathroom exhaust and heaters, ducts that do not terminate outside the building should be vented to the outside to prevent the buildup of indoor air pollutants. This is important because when using products or appliances that may release pollutants into the indoor air, it is crucial to always ventilate and follow manufacturers' instructions to maintain good indoor air quality.
For example, if a bathroom exhaust fan or a heater is not properly vented to the outside, pollutants such as moisture, odors, and potentially harmful gases can accumulate indoors, leading to health issues and discomfort.
Therefore, for safety and energy efficiency purposes, it is recommended to ensure that bathroom exhaust and heater ducts terminate outside the building, following proper ventilation guidelines and instructions.