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  3. セイホープロダクツ 業務本部
  4. Product condition and underfloor environment of the Dry Pro type-C after approximately 2.5 years of use.
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  • Nov 05, 2025
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Nov 05, 2025

Product condition and underfloor environment of the Dry Pro type-C after approximately 2.5 years of use.

セイホープロダクツ セイホープロダクツ 業務本部
This is a report on the inspection results after approximately two and a half years of using the Dry Pro Type-C in the newly added crawl space (foundation packing method) during the renovation. The inspection results showed that there was no dust or other substances adhering to the heat dissipation fins of the dehumidifier, the dehumidifying fins, the intake of the blower, or the fan that could negatively affect performance. Additionally, there were no foreign substances or dust adhering to the drain hose for dehumidified water or the pump tank that could adversely impact performance, and all components were functioning normally. (Photo: Heat dissipation fins of the dehumidifier) The newly added crawl space was located on the north side in a poorly ventilated area, but no signs of mold or condensation were observed, confirming that a dry state was maintained. (Photo: Installation status) Please be sure to read the [related materials] and [related links]. ↓ ↓ ↓
Heat dissipation fins for the dehumidifier.
Heat dissipation fins for the dehumidifier.
Installation status
Installation status
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Underfloor electronic dehumidification unit 'DRY PRO' Ver3

Contributes to the suppression of condensation and mold under the floor. A new model compatible with the foundation packing method has been introduced.

The "DRY PRO" Ver3 is an electronic dehumidifying and ventilation unit for underfloor use, combining a Peltier cooling device with a dedicated stirring and diffusion-type blower. In addition to the diffusion-type model "TYPE-D" for foundation insulation methods, a new model "TYPE-C" compatible with foundation packing methods has been added to the lineup. It can dehumidify even in areas where moisture tends to accumulate by stirring a wide range of air. It helps suppress moisture and condensation under the floor, contributing to the prevention of mold, pests, and decay fungi in wooden components. Furthermore, with the version upgrade in June 2024, a powerful dehumidification operation mode has been added. The surrounding temperature range for dehumidification operation (low-temperature dehumidification operation range) has been expanded, now accommodating surrounding temperatures down to 5°C. 【Features】 ■ Easy installation with a φ22 drainage hole (no drainage pump required) ■ Automatic operation possible with a dedicated indoor controller ■ The direction of the aluminum duct of the blower can be set freely ■ Dehumidification capacity of 1800mL per day (depending on conditions) ■ Uses non-fluorinated electronic cooling technology ■ Compatible with underfloor flooding sensors (optional) *For more details, please refer to the PDF document or feel free to contact us.

  • Heating and cooling equipment and facilities

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Corrosion prevention measures due to condensation in humid environments.

Measures against condensation in summer! Condensation and corrosion within wall structures are often difficult to detect.

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.

  • Housing structure technology/long-term superior housing technology
  • Heat insulation and heat shielding methods

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Dehumidification and condensation measures for sealed crawl spaces! Electronic dehumidifying and air blowing unit for crawl spaces.

[Demo available] Powerful airflow spreads dehumidified air over a wide area! By making a Φ22 hole for the drain pipe, installation can be easily done.

The "Dry Pro" electronic dehumidifying and blowing unit for underfloor use combines a Peltier cooling device with a diffusion-type blower to dehumidify the entire underfloor area, suppressing the occurrence of moisture and condensation! This system is designed to dehumidify the space between the foundation and the floor, suitable for housing construction methods that lack ventilation openings. On days with high humidity during the rainy season or summer: ● Powerful dehumidification at 1800ml/day It effectively resolves moisture and condensation issues, and is useful for preventing mold, pests, and decay fungi in the wooden parts under the floor. 【Features】 ■ Easy installation by simply drilling a Φ22 hole for drainage! ■ Dehumidified air is circulated widely by the blower ■ Equipped with fitonchid, which has deodorizing effects, as standard ■ Patent and design applications submitted ■ Fully automatic operation with a dedicated controller *Please note that [demo visits] may not be available in certain regions. Thank you for your understanding in advance. *For more details, please refer to the PDF materials or feel free to contact us.

  • Floor and equipment composite system
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Solving floor moisture problems in homes with basic insulation methods.

The cause is a large amount of water vapor! The challenge is how to remove humidity and suppress mold and decay.

Foundation insulation is a method of insulating the foundation that faces the outside air. The period when the risk of condensation and mold is highest with foundation insulation is from June to September of the first year after completion. The main cause is the large amount of water vapor coming from the concrete floor. Especially, wood that contains a lot of moisture significantly deteriorates in strength, so it is important to be cautious considering durability against earthquakes and typhoons. As a solution to these humidity problems, our company has developed a dedicated underfloor dehumidifier called "Dry Pro." It effectively eliminates humidity and condensation, and is useful for preventing mold, pests, and decay fungi in the underfloor wooden components. (Patent and design application pending) 【Features of Dry Pro】 ■ Dehumidification capacity of approximately 400-600cc per day on humid days during the rainy season and summer ■ Circulates dehumidified air widely using a blower ■ Quiet design: 45/44dB ■ Standard equipped with phytoncide that has deodorizing effects *For more details, please refer to the PDF materials or feel free to contact us.

  • Safety Supplies
  • Insulation work
  • Heat insulation and heat shielding methods

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[Effect Verification Test] Underfloor Dehumidifying Blower "Dry Pro"

After about one month, a drier condition (wood moisture content 12%) was confirmed!

"Dry Pro" is a floor underfloor dehumidifying fan that effectively eliminates moisture and condensation, and is effective against mold, pests, and decay fungi in the wooden parts under the floor. Assuming the early stages of new construction using foundation insulation methods, 36 liters of water were sprayed on the underfloor foundation of each building, and dried wood (cedar) was installed to measure the moisture content of the wood and the humidity under the floor. As a result, the buildings where this product was installed gradually dried out by repeatedly operating the dehumidification process every day, and after about two months, an average of approximately 70% RH dry condition was confirmed even outside of dehumidification operation hours. [Experiment] ■ Test House A - Floor area approximately 10 tsubo - Underfloor with foundation insulation method (Dry Pro installed) ■ Test House B - Floor area approximately 10 tsubo - Underfloor with foundation insulation method (without dehumidifying fan) *For more details, please refer to the PDF document or feel free to contact us.

  • Insulation work
  • Air compressors, blowers and pumps
  • Heat insulation and heat shielding methods

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Related catalog(4)

Underfloor electronic dehumidification unit 'DRY PRO' Ver3

Underfloor electronic dehumidification unit 'DRY PRO' Ver3

PRODUCT
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Foundation packing and foundation insulation method moisture issues under the floor [TYPE-C]

Foundation packing and foundation insulation method moisture issues under the floor [TYPE-C]

TECHNICAL
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Contact this catalog

Foundation packing and foundation insulation method moisture issues under the floor [TYPE-D]

Foundation packing and foundation insulation method moisture issues under the floor [TYPE-D]

TECHNICAL
  • E-book viewing
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Contact this catalog

Corrosion prevention measures against condensation in humid environments.

Corrosion prevention measures against condensation in humid environments.

TECHNICAL
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  • Catalog download

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[Please introduce this to the management and general affairs department] Update on the expense reimbursement system implementation case! The input and verification work for FB data that used to take 2-3 hours is now completed in just 5 minutes!

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  • OTHER

An article has been published about the case of introducing the expense reimbursement system "Rakuraku Seisan" at TSP Corporation. ~ In the case of TSP ~ Before the introduction, there were challenges such as dealing with the "paper" sent from various locations and the reliance on specific individuals for the tasks. After the introduction, the input and checking of FB data, which used to take 2 to 3 hours, can now be completed in just 5 minutes. Additionally, the mindset of the accounting department, which was previously reliant on manual entry, has changed. [Case Overview] ■ Challenges before introduction - Dealing with "paper" sent from various locations, reliance on specific individuals ■ Key points of introduction - A robust support system for setup and operation - Easy to start from a small scale both financially and functionally *For more details, please refer to the related links or feel free to contact us.

Jul 02, 2026

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Event Report: AI Startup Engineering Meetup Held with Four AI Startups

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  • COMPANY

Engineering Meetup Report is Now Available! We have published the event report from the AI Startup Engineering Meetup, held at Google for Startups Campus Tokyo. The event brought together four AI startups, where engineers and engineering leaders with backgrounds at major companies shared insights on: ◆Product development ◆Career journeys ◆AI-related initiatives Kort Valuta was represented by our Chief Operating Officer and a Backend Engineer, who shared perspectives on product development in the fintech industry and the unique development environment of a startup. The networking session that followed sparked meaningful conversations on technology and career development, creating valuable new connections among participants. At Kort Valuta, we will continue to value collaboration with the technology community while striving to build even better products. Read the event report: https://prtimes.jp/main/html/rd/p/000000126.000076589.html We're hiring! If you're interested in building the future of fintech with us, check out our careers page: https://recruit.kortvaluta.com/?utm_source=WEB&utm_medium=sns&utm_campaign=ipros

Jul 02, 2026

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We have released the document 'Half a year of slacking vs. full operation in 3 months - Conditions for companies that should use initial setup support!'

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  • CATALOG

We have published a white paper titled "Half a Year of Procrastination vs. Full Operation in 3 Months - Conditions for Companies That Should Use Initial Setup Support," aimed at companies considering the introduction and operation of attendance management systems. This document clearly explains the key points of initial setup that are prone to difficulties during implementation, as well as the differences between handling it in-house and utilizing specialized support. If you want to smoothly launch an attendance management system, please take a look.

Jul 01, 2026

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Summer Grand Thanksgiving Festival 2026

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From July 2026 until the end of September, we will hold a Summer Grand Appreciation Festival! High-pressure washers at great prices! Plan 1: A special set of SP60L/60new/60DX/60GE comes with a free Z swivel joint set! Plan 2: Customers who purchase a compressor will receive a new red hose (30m) for free! Plan 3: Washing hose [6M] available at a special price! A wide range of popular high-pressure washer series, cleaning accessories, painting machines, compressors, and other products are also available! Items listed can be purchased at great deals! Don't miss this opportunity!

Jul 01, 2026

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Notice of Envu Ant Bait Certification Renewal

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(Japan) Termite Control Association Hachikusan FL No. 3359 (Japan) Termite Control Association Hachikusan MC No. 3511 The update from July 1, 2026, is now available.

Jul 01, 2026

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