Whether the bathroom and kitchen are suitable for installing ERV fresh air systems needs to be judged comprehensively based on their functional characteristics, 

usage scenarios and system limitations.

‌1. Bathroom: Can be installed, but with conditions‌

‌1. Applicable scenarios‌

‌High humidity environment‌: ERV can recycle the humidity in the exhaust air (especially in winter), reducing the energy loss caused by the difference in humidity 

between indoor and outdoor.

‌Long-term ventilation needs‌: If continuous ventilation is required for 24 hours (such as dark bathroom without windows), ERV is more energy-efficient than ordinary 

exhaust fans.

‌2. Precautions‌

‌Insufficient instantaneous exhaust‌: ERV is a low-volume continuous ventilation, which cannot quickly exhaust high-humidity air such as after taking a bath, and needs 

to be used with ordinary exhaust fans.

‌Anti-mold maintenance‌: Mold spores in the bathroom may contaminate the heat exchange core, which needs to be cleaned regularly (it is recommended to check the 

filter every month).

‌Installation location‌:

Avoid the exhaust outlet facing the shower area to prevent water vapor from directly entering the pipe.

Keep a distance (>1.5 meters) between the air inlet and the toilet/floor drain to avoid odor circulation.

‌2. Kitchen: Direct installation is not recommended‌

‌1. Main issues‌

‌Fume pollution‌: Cooking fumes contain grease particles, which can easily clog the heat exchange core and filter, greatly reducing efficiency and making it difficult to clean.

‌High temperature risk‌: Local high temperature (>50℃) during stir-frying may damage the plastic parts or membrane materials of the ERV.

‌Odor crossover‌: If the kitchen exhaust is too close to the ERV air inlet, the fumes may penetrate into other rooms through the heat exchanger.

‌2. Alternative solutions‌

‌Independent exhaust system‌: It is recommended to use a high-power range hood (air volume ≥15m³/min) in the kitchen to directly exhaust the fumes.

‌ERV and kitchen linkage‌:

ERV is responsible for ventilation of the whole house, and the kitchen is equipped with an exhaust fan separately, which is controlled by intelligence to avoid simultaneous 

operation (to prevent negative pressure interference).

The ERV air inlet is far away from the kitchen to avoid inhaling fumes.