The core of the new air system is classified based on two dimensions: heat exchange capacity and installation form. Among them, the heat exchange type is the mainstream for commercial and household use (suitable for the core application scenarios of ERV/HRV ventilation equipment). Different types have significant differences in energy consumption, applicable scenarios, and installation costs. The following is a sorting based on market popularity + practical value, and the core definitions, advantages, disadvantages, and applicable scenarios of each type are analyzed. The content is in line with the market analysis and product promotion needs of the ventilation equipment trade:

1. Classified by heat exchange capacity (core mainstream classification, the main export models are concentrated here)

This is the most core classification method for the new air system. The core difference lies in whether it recovers the heat/cold of indoor and outdoor air. It directly determines the energy efficiency of the equipment and is also the core indicator for overseas purchases (especially in regions with large temperature differences).

1. Full heat exchange new air system (ERV, Energy Recovery Ventilator)

Core principle

Through the full heat exchange core body, it recovers the sensible heat (temperature) and latent heat (humidity) of the indoor exhaust air simultaneously, and then transfers it to the fresh air introduced from outside, achieving dual heat and humidity recovery.

Advantages

Optimal energy efficiency: Recovers indoor coldness in summer and indoor heat in winter, significantly reducing the load of air conditioners/central heating, and has low long-term energy consumption costs, making it a bestseller in high-latitude and high-humidity regions (such as Kazakhstan, some countries in Europe);

Good humidity control effect: Prevents direct entry of high-humidity outdoor air (in southern / coastal areas) or loss of indoor humidity by dry outdoor air (in northern / inland areas), maintaining stable indoor temperature and humidity;

High ventilation efficiency: Bidirectional flow design, independent air ducts for intake and exhaust, no air cross-contamination, and more thorough indoor air replacement. Disadvantages

The equipment cost is slightly higher: The process of the full heat exchange core body is complex, and the overall price of the complete machine is higher than the model without heat exchange. The cost of filter replacement is also slightly higher.

The core body is prone to accumulation of dirt: If the outdoor air quality is poor, the core body is likely to be covered with dust and mold, and regular cleaning / replacement is required. Otherwise, the heat exchange efficiency will be reduced.

Installation requirements are slightly higher: The bidirectional air duct needs to be independently arranged, which is suitable for new home decoration / refined renovation of rooms. For old houses, it needs to reserve more space for direct installation.

Applicable scenarios

Main promotion scenarios overseas: Residential, apartment, and small and medium-sized commercial spaces (offices, shops) in cities such as Mexico City (large temperature difference), Jakarta, Indonesia (high humidity), and Nur-Sultan, Kazakhstan (extremely cold), which are also the core promoted models for ventilation equipment in foreign trade.

2. Visible heat exchange fresh air system (HRV, Heat Recovery Ventilator)

Core principle

It only recovers visible heat (temperature) and does not recover latent heat (humidity), which is a simplified version of ERV.

Advantages

High cost performance: The equipment price and maintenance cost are lower than ERV, and the heat exchange efficiency (temperature recovery) can reach 70%-80%. The energy-saving performance is better than the model without heat exchange;

The core body is more durable: It is mostly made of metal, has strong anti-fouling and anti-corrosion capabilities, is easy to clean, and is suitable for outdoor dusty and highly polluted areas;

Simple structure: The failure rate is low, the later maintenance cost is low, and it is suitable for regions with limited overseas after-sales resources. Disadvantages

No humidity recovery: When high-humidity outdoor air enters in summer, it will increase the dehumidification load of the air conditioner. When dry outdoor air enters in winter, it will make the indoor air drier, and a humidifier / dehumidifier needs to be used in conjunction.

Energy efficiency is slightly inferior to ERV: It only has single heat recovery, and the long-term energy consumption is slightly higher than ERV.

Applicable scenarios

Dry / Less Rainy Regions Abroad: Almaty in Kazakhstan, Monterrey in Mexico, some cities in the Middle East, or commercial spaces without humidity requirements (warehouses, workshops).

3. New air system without heat exchange (one-way flow / two-way flow without recovery)

Core principle

No heat exchange core, only through the fan to achieve one-way air intake (only introducing fresh air, and the stale indoor air naturally exits) or two-way flow fan (air intake + air exhaust, but no heat transfer).

Advantages

Lowest cost: Equipment, installation, and maintenance costs are all among the lowest in the three categories, entry-level model, suitable for the low-end market abroad;

Simple structure: Small in size, low failure rate, flexible installation, suitable for retrofitting in old houses, and adaptable to small-sized apartments;

Low air resistance: The ventilation air volume can be adjusted as needed, suitable for scenarios with high ventilation efficiency requirements and no energy consumption requirements. Disadvantages

High energy consumption: When the indoor and outdoor temperature differences are large, directly introducing outdoor air will significantly increase the load of air conditioning / heating, resulting in high long-term usage costs and low acceptance in regions with high energy consumption standards overseas;

Large temperature and humidity fluctuations: Introducing hot air in summer and cold air in winter affects indoor comfort, and requires the combination of other temperature control devices;

Unidirectional flow is prone to dead corners: With only air intake and no active exhaust, stale indoor air is likely to accumulate in corners, and the ventilation is not thorough.

Applicable scenarios

Low temperature difference / low cost demand regions overseas: Surabaya, Indonesia; Cancun, Mexico (tropical, with small temperature difference); or temporary buildings, construction site dormitories, and simple shops and other non-long-term use spaces.