HRV fresh air system selection suggestions

1. Core considerations

‌ Climate adaptability ‌

Scenarios where HRV is preferred: areas with cold winters and low humidity (such as northern Canada and northeastern China), its heat recovery 

efficiency can reduce heating losses; if the humidity in the area is high all year round (such as the southern coastal areas), it is recommended to use 

ERV or dehumidification equipment

Avoid installing HRV hosts in polluted/high humidity areas such as kitchens and bathrooms to avoid affecting the life of the equipment

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Heat exchange efficiency ‌

Choose models with heat exchange efficiency ≥ 70% to ensure effective recovery of heat energy in indoor exhaust gas and reduce air conditioning/heating 

energy consumption

Prioritize the use of HRV systems with full heat exchange cores, which can maintain indoor temperature stability more efficiently than models with only 

sensible heat exchange

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Air volume matching ‌

Calculate the basic air volume based on the standard of 30m³/h per person and adjust it based on the house area. For example, for a 100㎡ family, it is 

recommended to choose a two-way flow model with a capacity of 300m³/h or more to ensure ventilation efficiency

Avoid blindly pursuing high air volume and balance noise control (preferably models with operating noise ≤30 decibels)

2. Product selection dimensions

‌System type‌

‌Pipeline HRV‌: Suitable for newly built houses or comprehensive renovation scenarios, pipeline layout needs to be planned in advance, and ventilation uniformity is better

‌Wall-mounted HRV‌: Suitable for renovated houses, easy to install but limited coverage, usually used in a single room

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Filtering function‌

At least equipped with primary + high efficiency (HEPA) dual-stage filtration, which can filter PM2.5, pollen and other pollutants, and the purification efficiency must be ≥95%

Activated carbon filter is a plus point, which can absorb odor and formaldehyde

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Energy consumption and maintenance‌

Prioritize low-power models (such as 24-hour power consumption ≤1 degree), and check the heat exchange core cleaning cycle (recommended ≤6 months)

Select models with filter replacement reminder function to reduce maintenance costs