Features of Aosun Heat Recovery Ventilator
- Continuous fresh air exchange helps reduce the accumulated stale and humid air in enclosed spaces.
- Low-noise operation enables continuous ventilation in bedrooms at night.
- Heat recovery technology can help maintain the ventilation effect during cold seasons while reducing heat loss.
- Compact wall-mounted design is suitable for apartments and renovation projects with limited piping space.
- Stable airflow performance can remove indoor moisture more evenly over a long period of operation.
- OEM and ODM options are provided to facilitate distributors in developing the HRV product line.
Aosun | Professional HRV Manufacturer in China
Aosun is a reliable and professional manufacturer of heat recovery ventilation systems based in China. We focus on the research, production, and customization of efficient residential and commercial HRV systems. With years of experience in the indoor air quality and humidity control industry, we are committed to providing practical, energy-efficient, and low-noise HRV solutions to global customers.They can effectively solve the problems of condensation, mold breeding, air turbidity and high humidity in the building. Our full range of HRV products can effectively achieve fresh air exchange, humidity regulation, and heat recovery performance, providing stable and healthy indoor air environments for residential apartments, hotels, serviced apartments, schools, offices, and various damp indoor spaces. We offer you a series of compact and easy-to-install HRV models to meet diverse project and renovation needs. In addition, we support standardized mass production, and also offer personalized OEM and ODM customization services, covering different air volumes, installation types, voltage specifications, and market certification requirements.
It is suitable for residential renovations and transformations, and does not require complex pipe layouts.
The circular panel is simple and elegant, suitable for modern decoration.
Equipped with ceramic heat exchanger cores, it can achieve stable humidity control and a longer service life.
It is small in size and takes up little space. It is designed for small enclosed spaces.
Why Mold and Condensation Happen in Buildings
In many residential and commercial spaces, due to the ineffective circulation or exhaust of indoor air, moisture accumulates continuously. Daily activities generate persistent water vapor, and the closed windows and buildings significantly reduce the natural ventilation effect. The humid air remains trapped on the cold walls and window panes, forming condensation water and creating ideal conditions for the growth of mold.
Why Traditional Ventilation Methods Are Often Not Enough
Many users rely on traditional ventilation and dehumidification methods to address condensation and mold issues. However, these traditional approaches can only temporarily alleviate the problem and often fail to achieve stable and long-term humidity control in modern sealed buildings.
Opening Windows
Opening windows is the most common way to improve indoor air quality, but it is extremely unreliable. Factors such as outdoor weather, traffic noise, seasonal temperature changes, building safety issues, and energy consumption make it difficult to maintain continuous ventilation. Intermittent window opening cannot maintain stable indoor humidity or prevent condensation from occurring again.
Exhaust Fans
The exhaust fan only expels the stale air but lacks fresh air input. Over-reliance on one-sided exhaust can easily cause negative pressure inside the room, resulting in poor air circulation, stuffiness, discomfort and humidity fluctuations. The fan cannot solve the problem of insufficient fresh air in the room.
Dehumidifiers
Dehumidifiers can reduce local humidity, but they do not have ventilation functions. They can only remove moisture from the air, but cannot eliminate odors, carbon dioxide, and indoor pollutants. You cannot improve the overall indoor air quality or eliminate the root cause of mold and condensation just by using a dehumidifier.
To achieve long-term, stable and energy-efficient indoor humidity control, the traditional ventilation method is no longer applicable. HRV provides an applicable solution for the full year, helps maintain a healthy level of humidity, effectively prevent mold and condensation problems.
How HRV Helps Control Mold and Condensation
Exhaust Humid Indoor Air
HRV system continuously removes moisture from the bedroom, living room, bathroom and laundry area, preventing moisture accumulation and eliminating the damp environment that causes window condensation, damp walls and mold growth.
Introduce Fresh Outdoor Air
While expelling the stale indoor air, HRV system introduces purified outdoor fresh air into the room. Continuous fresh air circulation can reduce carbon dioxide accumulation, eliminate odors, and balance the indoor pressure, which can ensure each room maintains fresh air circulation.
Recover Heat Energy for Energy-Saving Ventilation
The greatest advantage of the HRV system is its heat recovery technology. This system recovers heat during both the intake and exhaust processes, maintaining the indoor temperature during the ventilation process. It avoids the energy waste caused by traditional window ventilation and provides a comfortable air exchange effect throughout the year.
Recommended HRV Solutions for Different Building Types
Apartment and Residential Buildings
There are many problems in residential buildings, such as window condensation, damp corners, stuffy bedrooms and poor ventilation. The dampness problem in most households stems from daily cooking and showering activities, and the lack of a stable mechanical ventilation system to expel excess moisture.
Recommended solutions: Single room HRV, wall mounted HRV, compact HRV equipment
These HRV systems do not require complex duct designs and are highly suitable for new residential projects and renovated buildings. They address the insufficient ventilation in bedrooms and living areas, effectively reducing window fogging, indoor moisture accumulation, and mold risks, while enhancing daily living comfort.
Hotel
Hotel guest rooms are usually kept closed for long periods of time. Frequent tenant changes, restricted air circulation, and moisture accumulation can easily lead to condensation, unpleasant odors, and wall mold problems, which directly affect the guest experience and room ratings.
Recommended solutions: Ductless HRV, Centralized HRV
The HRV solution provides 24-hour continuous fresh air exchange and stable humidity control. Large hotels can use centralized HRV to uniformly control all HRV. By eliminating the residual odors and humidity in the enclosed space, the system can keep the indoor air fresh. It provides a dry and comfortable environment for hotel guests.
School and Office
High-density spaces such as classrooms, meeting rooms and office areas often suffer from poor air circulation, rising carbon dioxide levels and moisture accumulation. In modern enclosed buildings, temperature differences can easily cause condensation on large windows, making the interior hot and reducing the concentration and efficiency of people.
Recommended solutions: Centralized HRV system, commercial HRV system
The commercial HRV system supports long-term continuous operation and large air volume ventilation, which can effectively eliminate air stagnation, balance indoor humidity, prevent condensation in high-density public areas, and create a stable, healthy and efficient indoor environment for schools and office buildings.
Bathroom, Laundry Room and High Humidity Areas
The bathroom and laundry area are the main sources of moisture in the building. A single exhaust fan can only remove a portion of the moisture and often creates negative pressure, sucking in humid air back into adjacent rooms, thus failing to solve the overall humidity imbalance problem of the building.
Recommended solution: HRV and exhaust system combination solution
This combined ventilation system can achieve precise and efficient dehumidification effects, while replenishing and balancing the supply of fresh air. It can eliminate the negative pressure problem, prevent the spread of moisture between different rooms, and provide long-term stable humidity control for damp areas in residential and light commercial buildings.
HRV System Design Consideration
To achieve reliable mold prevention, humidity control and indoor humidity balance, HRV system must be selected and configured by professionals based on the specific circumstances of the project. A single ventilation solution cannot adapt to different building structures, room sizes and humidity environments.
During the process of system design and configuration, the key factors include room area and required air volume, indoor humidity level, building airtightness, installation method, operating noise requirements, heat recovery efficiency, maintenance cycle, as well as local voltage and certification standards.
Aosun offers you professional ODM and OEM customized HRV system design and selection services. Based on the project type, space ventilation requirements, installation conditions and compliance requirements of the target market, we provide the most optimal heat recovery ventilation solutions to maintain indoor humidity control, anti-mold effects and healthy indoor air quality in residential, commercial and public building projects over the long term.
HRV cannot directly eliminate the mold that has already grown in the building. It can only continuously improve indoor ventilation, reduce humidity, disrupt the humid environment that is conducive to mold growth, and prevent the mold from continuing to multiply and spread.
It won’t take effect immediately. When the device is first turned on, it can only alleviate the accumulation of moisture. Window condensation is formed by a combination of long-term high humidity and temperature differences. The HRV needs to run continuously for several hours to several days to gradually reduce the overall humidity of the entire house, and then the water on the glass can be gradually eliminated.
To significantly reduce the risk of mold growth, it is recommended to keep the indoor relative humidity stable between 40% and 60%. If it remains above 60% for a long time, it is highly likely to cause mold growth and wall dampness. And if it is below 40%, the air will be too dry.
Yes. HRV is equipped with a heat recovery core, which recovers the indoor heat during ventilation and does not lose as much indoor temperature as simply opening windows or using a single exhaust fan. At the same time, it continuously discharges humid air, addressing the problem of window and wall condensation caused by the large temperature difference between indoors and outdoors in winter from the root cause, achieving both energy conservation and humidity control.
It is recommended to operate at a low speed for 24 hours continuously. The indoor moisture is continuously generated by daily activities such as cooking, bathing, and breathing. Intermittent start-stop will cause the moisture to accumulate continuously. Stable low-speed ventilation for a long time can maintain the humidity within a safe range and effectively prevent condensation.
In a regular living environment, you need to remove the filter and rinse it with clean water every 1-2 months. Replace the filter with a new one every 6-12 months. In areas with more dust and debris, the cleaning cycle is shortened to 2-4 weeks, and the filter should be replaced every 3-6 months.
The ventilation and dehumidification capabilities have significantly declined. The indoor moisture cannot be promptly discharged, resulting in repeated occurrences of window condensation, wall corner dampness, and mold problems. At the same time, carbon dioxide and unpleasant odors accumulate indoors, making the air murky. In addition, the filter and movement are easier to accumulate ash and plug, shorten the service life of the equipment.
We recommend that you use it primarily in the bathroom, laundry room, and kitchen, they are the main areas where water vapor is generated throughout the house. Next come the bedrooms, where poor ventilation and continuous human exhalation of carbon dioxide at night make window condensation very likely to occur.
If the HRV air volume is too high, it may cause a significant increase in the noise level during equipment operation, and the room may easily develop negative pressure or strong air currents, resulting in an uncomfortable feeling of wind. It will also lead to unnecessary energy consumption. High-power equipment is larger in size and will occupy more installation space.
Yes. Installing a wall-mounted non-pipeline HRV only requires making holes in the wall to connect to the outside. Its construction period is short and it is suitable for old house renovations, apartments, and hotel single rooms. The pipeline-based central HRV requires the installation of a complete ventilation system, which is more complex and is more suitable for new home construction and large commercial spaces.
