セイホープロダクツ List of Products and Services

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the diffusion-type blower. When there is a high amount of water vapor, only the diffusion-type blower operates, and when it is low, the exhaust ventilation system operates in conjunction, bringing in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and blowing with absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and underfloor water issues, displaying them on the controller. 【Features】 ○ Effective against underfloor moisture, condensation, and mold ○ Powerful exhaust and diffusion For more details, please contact us or download the catalog.

The system detects the amount of water vapor (absolute humidity) and independently controls the exhaust ventilation system and the mixing fan. When there is a high amount of water vapor, only the mixing fan operates, and when it is low, the exhaust ventilation system operates in conjunction to bring in dry air from below the floor. POINT 1: Optimal independent operation of exhaust and air supply using absolute humidity sensors POINT 2: Optimal deodorization operation with standard phytoncide POINT 3: Detects abnormalities in the underfloor ventilation fan and water issues, displaying them on the controller. 【Features】 ○ Effective for underfloor moisture, condensation, and mold prevention ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

This product addresses the importance of ventilation highlighted by the Sick House Law. By specializing in underfloor ventilation, it responds to the negative pressure that occurs indoors due to ventilation fans (Type 3 ventilation system), which causes the indoor space to be depressurized, allowing air from under the floor to flow into the room. This characteristic prevents the inflow of dust, moisture, and other substances into the indoor environment that accompany the inflow of underfloor air during negative pressure conditions. Additionally, it simultaneously prevents the indoor inflow of harmful substances such as formaldehyde. The dedicated controller detects the amount of water vapor in the outside air with sensors and automatically adjusts the ventilation system's strength, enabling more efficient ventilation. 【Features】 - Effective against underfloor moisture, condensation, and mold - Powerful exhaust and mixing For more details, please contact us or download the catalog.

High functionality and innovative design backed by data. A diffuser shape aimed at efficient stirring, blowing air in a 90-degree wide direction. Used as a "relay" to maximize the capabilities of the exhaust-type ventilation system and to promote the "circulation" of air under the floor with powerful blowing and suction. Additionally, it offers various new usage suggestions depending on the purpose and location, such as "localized" use in moisture-prone areas like bathrooms. Of course, it employs a large sirocco fan of high air volume. With a three-dimensional design that minimizes air resistance and a quiet design, it smoothly draws in heavy, moisture-laden air. 【Features】 ○ Effective against moisture, condensation, and mold under the floor ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

High functionality and innovative design backed by data. A large-capacity sirocco fan of the high airflow type is adopted to more effectively stir the air under the floor and in the ceiling. The powerful airflow is expelled in four directions. With a unique scroll shape that minimizes waste, it achieves approximately twice the wind reach distance compared to conventional models, with a diameter of about 9 meters (wind speed of 0.5 m/s). The three-dimensional design with low air resistance and quiet operation smoothly draws in heavy, moisture-laden air. The body is made of lightweight and durable aluminum alloy, eliminating concerns about rust. 【Features】 ○ Effective for moisture, condensation, and mold prevention under the floor ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

The "Kazetaro" underfloor ventilation system forcibly introduces air into the crawl space, maintaining a comfortable condition for the wood. It is particularly effective in eliminating condensation. Underfloor ventilation also impacts the indoor environment, reducing conditions that promote the growth of dust mites and mold, thus benefiting the health of the family. The Kazetaro unit features a hybrid sensor that detects the amount of water vapor (humidity) in the outside air, and a hybrid controller that independently controls the Kazetaro blower type and Kazetaro mixing type, creating optimal ventilation operation for the wood in the crawl space. 【Features】 ○ Prevents the breeding of pests by improving ventilation effectiveness ○ Forcibly introduces air into the crawl space to prevent condensation ○ Maintains a comfortable condition for the wood, extending the lifespan of the building ○ Reduces conditions for the growth of dust mites and mold, creating a comfortable indoor environment For more details, please contact us or download the catalog.

"Kazutarou Basic" is a localized underfloor ventilation system designed to address areas prone to moisture accumulation, such as around water sources and the north side of buildings. Equipped with a flooding sensor, it quickly detects not only underfloor flooding caused by water damage but also leaks due to deterioration or damage to drainage pipes, providing peace of mind by alerting you to abnormalities. We offer two models: the "Kazutarou Basic SS" with a timer type and flooding sensor, and the standard timer type "Kazutarou Basic." 【Features】 ■ Equipped with a flooding sensor ■ Detects underfloor flooding and leaks due to deterioration or damage to drainage pipes ■ Supports environments where natural ventilation is insufficient with forced ventilation ■ Safety measures against increasing underfloor flooding and leaks *For more details, please refer to the external link page or feel free to contact us.

The Fuutaro panel type is powerful and features a silent design. Additionally, it is made of high-quality stainless steel, ensuring it does not detract from the appearance of your home. It forcibly exhausts moisture from under the floor, controlling the occurrence of unpleasant pests and mold. It is even more effective when used in conjunction with a mixing type blower. The 5-year long-term warranty guarantees peace of mind. This is the most popular model for underfloor ventilation. 【Features】 ○ Prevents the breeding of pests under the floor ○ Prevents condensation and extends the lifespan of the building ○ Creates a comfortable indoor environment For more details, please contact us or download the catalog.

In homes built with the foundation packing method, where conventional underfloor ventilators could not be installed, a dedicated slim nozzle can be attached and easily inserted into the gaps of the foundation packing. It is made of high corrosion-resistant coated steel plate, ensuring excellent durability, resistance to rust, and long-lasting strength. 【Features】 - Effective against underfloor moisture, condensation, and mold - Powerful exhaust and mixing For more details, please contact us.

What is the phytoncide cartridge standardly equipped in the turbine unit/Fuutaro unit? Why do we feel refreshed when we enter a lush green forest? The secret lies in the phytoncides that abound in the forest. Phytoncides are natural antibacterial components released by trees to protect themselves, and their fragrance is said to have effects such as neutralizing odors, antibacterial and pest-repellent properties that deter mold and insects. 【Features】 ○ Effective against moisture, condensation, and mold under the floor ○ Powerful exhaust and mixing For more details, please contact us or download the catalog.

- The following modes can be selected: A (exhaust) mode, A (exhaust) mode & B (mixing & diffusion) mode, timer mode, and stop mode. - When using the hybrid sensor, the operation is based on changes in water vapor content (measuring relative humidity and temperature to calculate absolute humidity) in timer mode. If the water vapor content is below the set value, it operates in A (exhaust) and B (mixing & diffusion) modes; if it is above the set value, it operates in B (mixing & diffusion) mode. * Moist air from outside is not allowed to enter under the floor. When "HB" is lit on the display, it indicates hybrid operation, and a special mode with phytoncide for efficient operation of the phytoncide effect can also be set. * A buzzer notification function has been added (during the 5/10 year inspection period or when the optional underfloor leak sensor or abnormal detection ventilation system is in operation). * If you desire a stronger effect (operation) from the exhaust fan during the summer or if there is a lot of moisture under the floor, please change the sensor sensitivity level setting to "H04," "H05," or "H00."

The "HC-324" is a controller for a subfloor ventilation system that detects the amount of water vapor in the outside air using a water vapor sensor and performs 24-hour ventilation while switching between "strong" and "weak" operation. It only replaces the dry air with low humidity from outside, improving ventilation efficiency. It also addresses issues of subfloor cooling in winter and nighttime operational noise with optional control settings. 【Features】 ■ 24-hour ventilation ■ Detects outside air water vapor levels and switches operation modes ■ Easy installation to switch boxes ■ Slim design for smart installation ■ Addresses subfloor cooling and nighttime operational noise issues *For more details, please refer to the PDF document or feel free to contact us.

The "ST-301e" is a digital timer specifically designed for underfloor ventilation systems, allowing selection of continuous operation mode, timer mode, and stop mode. It features LED indicators for confirming power and operation input/output, and can be installed using a switch box. The body is designed to be slim for a smart installation. 【Features】 ■ Three selectable modes ■ LED indicators for confirming power and operation input/output ■ Installable using a switch box ■ Equipped with inspection display function *For more details, please refer to the PDF document or feel free to contact us.

The "ST-301S" is a timer specifically designed for ventilation systems equipped with a floor flooding sensor. You can select from continuous operation mode, timer mode (energy-saving mode), and stop mode. It quickly detects not only floor flooding caused by water damage but also leaks due to deterioration or damage to drainage pipes, providing peace of mind by alerting you to abnormalities. 【Features】 ■ LED lights indicate power and operation status ■ Energy-saving function implemented ■ Can be installed using a switch box ■ Wiring can be done from both the front and back, improving workability ■ Fully automatic operation with a digital timer *For more details, please refer to the PDF document or feel free to contact us.

The humidity indoors is visible as condensation, so by opening windows or using exhaust fans, the trapped moisture can be expelled outdoors. But did you know that there is also a lot of this moisture under the floor? Modern homes have achieved excellent comfort through high airtightness and high insulation. However, as the structural reinforcement of foundations has progressed, the crawl spaces have become lower and the compartments more complex, making ventilation under the floor more difficult. Just checking one of the items below does not mean you can relax. If any one of them applies, it is a danger signal for your home. 【Let’s check together】 ■ When you open the underfloor storage or tatami mats, there is a musty smell. ■ There are black stains on the walls near the closet or dresser. ■ There is always condensation dripping from the windows or the lower part of the window sills. ■ The tatami feels damp and spongy. ■ The floor creaks, or you occasionally see winged ants in places like the bathroom. ■ You often get bitten by mites. ■ The floorboards feel sticky. ■ The cloth foundation is always damp or has moss growing on it. ■ There are cracks in the cloth foundation. *For more details, please refer to the PDF document or feel free to contact us.

We will introduce the operation program of the "Fuutarou Unit." The hybrid sensor detects the water vapor (humidity) in the outside air, and the hybrid controller independently controls the Fuutarou blower type and the Fuutarou mixer type. It operates ventilation to create a suitable environment for the wood under the floor. 【Features】 ■ Prevents pest breeding - By improving ventilation, it reduces the conditions for pest breeding. ■ Prevents condensation and extends the lifespan of the building - By forcibly bringing in air, it maintains a comfortable state for the wood. - Particularly effective in eliminating condensation. ■ Creates a comfortable indoor environment - Reduces conditions for the growth of dust mites and mold, contributing to family health. *For more details, please refer to the PDF document or feel free to contact us.

We conducted an experiment on how completely dried wood is affected by the ventilation conditions under the floor in a test house. Initially, the moisture content rises as it absorbs moisture from under the floor, but in the case of having a "subfloor ventilation fan" installed, the moisture content of the posts stabilizes at around 20%, as shown in the graph in the image. It can be seen that the moisture content is about 5% lower compared to when there is no "subfloor ventilation fan." 【Test Overview】 <Comparison of Moisture Content in Subfloor Posts in the Test House> ■ Duration: May 24, 2003 - July 27, 2003 ■ Post Size: 105×400mm, measuring 3 posts, the graph shows the average moisture content of the 3 posts ■ Measuring Equipment: Sanko Electronic Research Institute Co., Ltd. Moisture Meter MR-200 *For more details, please refer to the PDF document or feel free to contact us.

In 2020, the "mandatory energy-saving standards for housing" are scheduled to be implemented, and it is expected that Japanese housing will increasingly aim for high airtightness and high insulation. However, at the same time, measures against condensation during the summer must be considered. In a site where glass wool was filled using the 2x4 construction method and a vapor barrier was installed on the interior side, significant corrosion due to condensation occurred. It is believed that the interior became hot and humid, leading to condensation as it was cooled by the air conditioner on the inside. The hold-down hardware also showed white mold, and if corrosion progresses like this, it will pose problems for the durability of the building. This type of summer condensation particularly occurs in regions with high temperatures and humidity, like Japan. Therefore, it is necessary to implement sufficient measures against winter-type condensation while simultaneously preventing summer-type condensation. *For more details, please refer to the PDF document or feel free to contact us.

Introducing SEIHO's unique facilities, measuring devices, and instruments for conducting a wide range of tests, experiments, and measurements repeatedly. The anechoic chamber is equipped to accurately measure sounds generated by ventilation systems and motors without being affected by external noise or reverberation. Using an FFT analyzer to perform frequency analysis of noise, we identify the characteristics and factors of noise, which can be utilized for designing quieter products and quality verification. For inquiries or consultations regarding inspections, please feel free to contact your sales representative or the SEIHO Products Sales Headquarters. 【Features of Noise Test Measurement Equipment】 ■ Accurate measurements unaffected by external noise or reverberation ■ Panel-type, dimensions 4m × 4m × 2.5m ■ Sound insulation characteristics: 62dB at 500Hz ■ Indoor background noise: 20dB ■ Identifying characteristics and factors of noise to aid in designing quieter products and quality verification *For more details, please refer to the PDF document or feel free to contact us.

This catalog is a comprehensive catalog of SEIHO, which produces and sells small motor ventilation equipment, security devices, and more, covering design, development, manufacturing, and sales. It includes the "Underfloor Ventilation Series" and "Underfloor Dehumidification Series," which are effective for addressing moisture and condensation under floors, the "Attic Ventilation Series," which is effective for dealing with heat in attics, and the self-monitoring "Security Series," which can perform burglary alerts, fire warnings, and emergency notifications. [Contents] ■ Underfloor Ventilation Series ■ Underfloor Dehumidification Series ■ Attic Ventilation Series ■ Time Switch Lineup ■ Security Series ■ Indoor Deodorization Series ■ Other Related Products *For more details, please refer to the PDF document or feel free to contact us.