What Sekisui Home Techno Co. does

Sekisui Home Techno Co., Ltd. is a Japanese unit bath (prefabricated bathroom) specialist manufacturer and a wholly-owned subsidiary of Sekisui Chemical Co., Ltd., a publicly listed diversified chemical conglomerate. Founded in 1963, the company operates from Osaka with a nationwide sales network spanning all Japanese regions, serving two primary customer segments: home builders and housing manufacturers (B2B channel for new residential construction), and healthcare and senior-care facility operators (B2B channel for the wells care brand). It also serves individual consumers through renovation channels and a direct online store for replacement parts.

The product portfolio centers on five core unit bath lines (Bath Saloon Escort, Bath Saloon Roomy, Bath Core, Shower Core SBC, and Rakuyoku Rakuzo), the wells care-facility bathroom brand including the KGS-F large unit bath and automatic cleaning/microbubble systems, EcoCute heat pump water heaters manufactured through partner Corona Corporation, combined treatment septic tanks, and ancillary fixtures (toilets, bidets, drain pans). Technical differentiators include industry-leading floor insulation (heat transfer rate 0.7W/m²·K for heat-shock prevention), automatic cleaning bathtub systems co-developed with Rinnai, microbubble technology from Science Corporation for care facilities, and DCPD resin septic tanks.

Revenue is generated primarily through hardware sales to home builders and care facilities at unit prices ranging from JPY 520,000 to JPY 3.19 million, supplemented by professional services (after-maintenance, repair, renovation) and direct consumer parts sales. Distribution combines direct enterprise sales via regional offices and the らくりえーたー (RaCreator) business portal for architects/builders, with a direct-to-consumer online storefront launched December 2019. The company markets through trade shows (H.C.R., Barrier-Free Expo), industry webinars, and BIM digital construction tooling.

Name

Sekisui Home Techno Co.

Legal name

Sekisui Home Techno Co., Ltd. (積水ホームテクノ株式会社)

Website

https://sekisui-hometechno.co.jp

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

251–500 employees

Ownership category

akta.pro rank

Product category

Unit Bathroom Manufacturing

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Water & Home System Care (Water Softeners, Septic Treatments, Drain/Openers, Appliance Cleaners) (CRADAKAK)

Keywords

• Unit bathroom manufacturing
• Senior care bathing equipment
• Residential bath systems
• Heat pump water heaters
• Combined treatment septic tanks

Headquarters

HQ city

Osaka

HQ country

Japan

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Unit Bathroom Product Sales: Manufacturing and sales of unit bathrooms (ユニットバス) for single-family homes, apartments, and multi-story residential buildings. Revenue is generated through sales to home builders and housing manufacturers as primary B2B customers, as well as individual consumers through renovation channels.
2. Care/Senior-Care Bathroom Equipment (wells): Sales of wells brand care and self-support bathroom equipment for healthcare and senior-care facilities, including microbubble bath tubs, automatic cleaning systems, lift carriers, and shower warm bath systems.
3. EcoCute Heat Pump Water Heaters: Sales of eco-friendly heat pump water heaters (エコキュート) using air thermal energy for efficient hot water production. Products are developed/manufactured in partnership with Corona ( 코로나 ).
4. Septic Tank Systems: Sales of Sekisui combined treatment septic tanks (セキスイ合併処理浄化槽) for households not connected to municipal sewage systems. Includes SGJ型和SGCN型 models with various capacity options.
5. Parts, Accessories, and After-Maintenance Services: Direct sales of replacement parts, accessories, and maintenance/repair services through their online store and customer support centers. Includes consumables, replacement parts, and repair services for all product lines.
6. Maintenance and Renovation Services: After-sales maintenance, repair, and renovation services for installed products, including waterproof performance guarantees and extended warranty programs.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels7 records

Core offering

Sekisui Home Techno Co. manufactures and sells unit bathrooms (ユニットバス), senior-care bathing equipment, heat pump water heaters (EcoCute), and combined treatment septic tanks. Core revenue is generated by selling modular unit baths and care bathing systems to home builders, housing manufacturers, and senior-care/medical facility operators in Japan, supported by nationwide field sales offices, a dedicated business portal, and an official online store for residential parts and maintenance services.

Product overview

Sekisui Home Techno Co. is a unit bath specialist manufacturer and wholly-owned subsidiary of Sekisui Chemical Co. The product portfolio centers on bathroom/kitchen equipment for residential and care facilities. Core products include unit baths: Bath Saloon Escort (premium), Bath Saloon Roomy (customizable), Bath Core (for collective housing), Shower Core SBC (compact), and Rakuyoku Rakuzo (high-end); care equipment under the wells brand including variable bathtubs, KGS-F large unit baths, automatic cleaning bathtubs, and micro-bubble bathtubs; energy products including Eco Cute heat pump water heaters and floor heating; and water infrastructure including combined treatment septic tanks. The company also produces amenities such as warm water bidet seats, toilets, washing machine drain pans, and garden pans.

Differentiator

Problem solved

Functional benefit

Brands

• Bath Saloon (バスサルーン): Premium unit bath brand for detached houses and apartments, including Escort, Roomy, and Raku-yoku Raku-za sub-lines.
• wells (ウェルス)
• Bath Core (バスコア)
• SBC Shower Core (シャワーコア)

Products and services

• Bath Saloon Escort Premium unit bath for detached houses and apartments with industry-leading floor insulation (heat transfer rate 0.7 W/m²·K) and industry-leading 1,000 mm washing area in a 1-tsubo size; for new construction and renovation of residential bathrooms.
• Bath Saloon Roomy Unit bath for detached houses emphasizing customization, family-friendly design, slim drain (2010 Good Design Award), easy-clean floor patterns, and high-insulation tub.
• Bath Core (BS/BP, GB/GA series) Unit bath for mid-to-high-rise and low-rise collective housing (apartments and condominiums) offering performance, quality, quick installation, and on-time delivery for multi-unit developments.
• Shower Core SBC Compact shower-focused unit bath for collective housing, designed for small-space installations.
• Rakuyoku Rakuzo Premium unit bath for detached houses focused on bathing enjoyment and comfort, positioned at the high end of the residential range.
• wells Care and Self-Support Bathroom Equipment Care bathroom brand for nursing and welfare facilities covering independent bathing through assisted and lift bathing, with variable-function bathtubs that adapt to user needs and facility service requirements; installed in over 10,000 facilities across Japan.
• KGS-F Large Unit Bath Large free-planning unit bath (up to 3m×6m, ceiling height 2.3m) for nursing and medical welfare facilities, supporting mechanical bathing equipment installation with 300 L/min drainage capacity and industry-leading floor insulation (U-value 0.767 W/m²·K); 3-4 day construction time.
• Wells Automatic Cleaning and Filling Bathtub Fully automatic drainage, cleaning, and hot-water filling system for nursing and medical facilities; jointly developed with Rinnai using gas water heater design and control technology; reduces bathing assistance time by approximately 15 minutes per person per session.
• Automatic Cleaning Bathtub (Consumer Version) Residential one-touch automatic bathtub cleaning system that drains, cleans, and refills; technology derived from the wells automatic cleaning bathtub and adapted for general household use in Bath Saloon Escort installations.
• Wells Micro-bubble Bathtub Micro-bubble bathing technology bathtub for nursing and healthcare facilities using Science Co., Ltd. micro-bubble technology (bubble diameter <100μm) to adsorb positively charged dirt particles and improve bathing quality while reducing caregiver burden.
• EcoCute Heat Pump Water Heater Heat pump water heater utilizing air thermal energy with high JIS annual heat retention efficiency (4.0 for premium models); uses natural CO2 refrigerant with zero ozone depletion and supports HEMS and ZEH integration for residential energy management.
• Sekisui Combined Treatment Septic Tank (SGJ/SGCN Type) Combined treatment septic tank processing both gray water and toilet sewage for households not connected to municipal sewage systems. SGJ type for 5-7 person capacity, SGCN type for 10-50 person capacity; uses DCPD resin with high impact resistance and earthquake-resistant individual processing.

Quantifiable outcome

• Automatic cleaning bathtub reduces bathing assistance time by approximately 15 minutes per person per session (company research)
• +7 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature7 records

Partnerships

Five partnerships are on record, tiered core and major.

• Science Corporation (株式会社サイエンス)coreTechnology or Integration · 1 June 2026Technology partnership for microbubble technology used in the wells microbubble bathtub (wellsマイクロバブル浴槽). Science Corporation provides the microbubble technology (bubbles with diameter less than 100μm), which Sekisui Home Techno integrates into its wells bathroom systems for care facilities.
• Marubeni Arclog Corporation (丸紅アークログ株式会社)coreStrategic or Co-development Partner · 30 July 2025Co-hosted BIM and digital catalog webinar for building industry professionals. Marubeni Arclog serves as a speaker and expert contributor on 'BIM and construction material digital platforms' and 'integration of BIM with building materials', supporting Sekisui Home Techno's BIM data provision services for care bathroom products.
• Rinnai Corporation (リンナイ株式会社)coreStrategic or Co-development Partner · 4 October 2021Technology from the jointly developed wells automatic cleaning bathtub was adapted for the consumer residential automatic cleaning bathtub (自動洗浄浴槽), with Rinnai providing water heater control technology integration.
• Rinnai Corporation (リンナイ株式会社)coreStrategic or Co-development Partner · 27 August 2018Joint development of the wells automatic cleaning and hot-water filling bathtub system. Rinnai provides gas water heater design and control technology, enabling the system to connect with any type of hot water supply equipment (local/central systems, gas/electric/oil heat sources, and non-Rinnai water heaters). This technology was later adapted for the consumer automatic cleaning bathtub launched in 2021.
• Corona Corporation (株式会社コロナ)majorTechnology or IntegrationManufacture and technology partnership for EcoCute (heat pump water heater) products. Corona manufactures EcoCute units under the Sekisui brand. Also handles after-sales service, maintenance, and customer support for EcoCute products. Free inspection and repair campaigns for EcoCute products are handled through Corona's dedicated hotline.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• TOTO Ltd. TOTO is Japan's leading manufacturer of bathroom fixtures, including unit baths, toilets, and washlets, and competes directly with Sekisui Home Techno across the residential and care facility segments in the Japanese market.
• LIXIL Corporation: LIXIL is a major Japanese housing and building products manufacturer with a substantial unit bath portfolio (INAX brand) directly competing in residential and multi-family housing segments.
• Panasonic Housing Solutions Co., Ltd. Panasonic Housing Solutions offers unit baths (Oasis/U-style series) as part of its integrated housing business, competing for the same home builder channel and consumer renovation customers in Japan.

Broad incumbents

• Daiwa House Industry Co., Ltd. Daiwa House is a major Japanese home builder that procures unit bathrooms from suppliers like Sekisui Home Techno, but also operates as a broad residential construction incumbent with potential vertical integration interests.

Others

• Noritz Corporation: Noritz is a major Japanese manufacturer of water heaters and bathroom equipment, serving similar residential and light commercial customers with overlapping product categories.
• Corona Corporation: Corona manufactures EcoCute heat pump water heaters under Sekisui's brand and is also a competitor in the broader residential heat pump water heater market in Japan.
• Rinnai Corporation: Rinnai is both a technology partner (joint developer of automatic cleaning bathtub systems) and a broader water heater competitor. Operates in adjacent hot water heating and bathroom equipment categories.

Emerging players

• Matsui Corporation: Matsui manufactures plumbing equipment and bathroom fixtures for the Japanese market, including products that compete with Sekisui Home Techno's offerings in renovation and new construction segments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/sekisuihometechno_official

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sekisui Home Techno Co.