The exhaust fan motor is the core component of the ventilation system, and its performance directly affects the exhaust efficiency, noise and service life. Whether it is a home kitchen, bathroom, or industrial workshop, it is crucial to choose the right motor. This article will provide you with a systematic purchase guide from multiple dimensions such as parameters, types, and scenarios.
1. Clarify the usage scenarios and needs
Home scenarios
Kitchen: Need to deal with oil smoke and high temperature, choose a high temperature resistant and oil-proof motor, and the air volume is recommended to be ≥200m³/h.
Bathroom: Pay attention to moisture-proof and low noise, IPX4 or above waterproof level is required, and the noise is ≤40dB.
Industrial/commercial scenarios
Workshops, warehouses, etc. require large air volume (≥500m³/h) and dust-resistant motors, and industrial-grade AC motors are preferred.
2. Core parameter analysis
Motor type
AC motor (AC): low cost, simple maintenance, but low energy efficiency, suitable for home users with limited budgets.
Brushless DC motor (BLDC): high energy efficiency (energy saving of more than 30%), low noise, long life, suitable for long-term high-frequency use.
Power and air volume
Calculation formula: Required air volume (m³/h) = room volume (length × width × height) × ventilation times (kitchen recommended 10-15 times/hour, bathroom 6-8 times/hour).
Reference power: 20-30W for ordinary bathrooms, 40-60W for kitchens, and more than 100W for industrial scenes.
Noise value
Suitable for bedrooms and study rooms below 40dB; acceptable for kitchens below 50dB; industrial scenes can be relaxed to 60dB.
Energy efficiency level
Preferentially choose level 1 or level 2 energy efficiency, which is more energy-saving for long-term use
III. Material and protection level
Shell material
Aluminum alloy: good heat dissipation, corrosion resistance, suitable for high temperature environment in the kitchen.
Engineering plastics: light weight, strong insulation, suitable for humid environment in the bathroom.
Protection level (IP code)
Bathroom and outdoor require IPX4 (splashproof); industrial dust environment requires IP5X (dustproof)
