How to select a ceiling-mounted fresh air ventilator

Combined with the application scenario and functional requirements, the following are the comprehensive selection points and precautions:

1. Core parameter selection

‌Air volume matching‌

Calculate the air volume requirement based on the room area and number of people:

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Basic formula‌: Total air volume ≥ Room area (㎡) × floor height (m) × ventilation times (recommended ≥1 time/h) ‌

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Staff requirements‌: At least 30m³ of fresh air per person per hour, plus basic air volume‌1

Reference models:

Small apartment (less than 80㎡): 150–500m³/h‌

Medium and large apartment or commercial: 800–6000m³/h‌

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Filtration system‌

Filter level‌: H13 high-efficiency filter (PM2.5 purification efficiency ≥99%) is preferred‌

‌Layer design‌: 3–5 layers of filter are preferred (such as G4 primary efficiency + F7 medium efficiency + H13 high efficiency), avoid excessive wind resistance caused by too many layers‌

2. Functional configuration ‌Heat exchange function‌

Full heat exchange is better than sensible heat‌: Full heat can recover temperature and humidity, and has higher energy-saving efficiency (heat recovery rate 81%–96%)‌

Supports remote control, air quality sensing and other functions, which is convenient for real-time adjustment of air volume and operation mode‌

3. Installation and structure

‌Installation location and safety‌

Air intake pit avoidance‌: Stay away from gas exhaust outlets and bathroom exhaust holes to avoid exhaust gas backflow‌

‌Drilling solution‌: Prioritize beam-wrapped or reduced-diameter pipes (avoid damaging load-bearing beams), and it is recommended to use pipe branches with a diameter of ≤110mm‌

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Material and noise reduction‌

Exterior shell‌: Steel exterior shell + electrostatic spraying process, corrosion-resistant and durable‌

‌Inner shell‌: EPP one-piece molding material, improves thermal insulation and quiet effect (noise ≤45dB)‌

4. Maintenance

Choose a model with easy filter replacement, and clean or replace the filter regularly (recommended 3-6 months/time)‌

Special scene supplements

‌Low temperature/high humidity environment‌ (such as cold storage, fruit and vegetable preservation warehouse): Use a cold air machine with a fin spacing ≥8mm to avoid frost and blockage‌

‌High noise sensitive area‌ (such as bedroom): The installation location is away from the rest area, and low noise models (≤35dB) are preferred‌