WISY AG
WISY AG is a German manufacturer founded in 1989 that sells Made-in-Germany rainwater filtration and harvesting systems directly via e-commerce to residential, commercial, and industrial customers worldwide, anchored by proprietary vertical stainless steel filter mesh technology.
- Company typePrivate
- Founded1989
- HeadquartersKefenrod-Hitzkirchen, Germany
- Headcount1–10
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What WISY AG does
WISY AG is a privately held German specialty manufacturer founded in 1989 and headquartered in Kefenrod-Hitzkirchen, Hessen, that designs and sells rainwater harvesting and filtration systems under a Made-in-Germany positioning. The company's core technology is a vertical stainless steel filter mesh (mesh sizes 0.28 mm–0.44 mm) used across three filter families — the Filtersammler FS downpipe filter, the Wirbel-Feinfilter (WFF 100/150/300) vortex fine filters for underground pipe installation, and the Zisternenfilter LineAr for cistern installation — which together implement WISY's documented 4-stage rainwater treatment process (filtering, quiet inlet, floating intake, overflow with odor trap). Around these filters, WISY has assembled a complete system portfolio including submersible and suction/pressure pumps, automatic switching units (Schaltautomat Zeta 02), underground cisterns and basement tanks (3,000–7,000 L), rain barrels, overflow siphons, separation stations, and pre-bundled Komplettsets for garden and household use.
The company operates as a direct-to-consumer e-commerce business selling through its multilingual wisy-water.com storefront (more than 20 supported languages, multiple currencies), complemented by an international partner/reseller program and professional consulting for rainwater system planning. Revenue is generated primarily from unit-priced hardware sales ranging from roughly €58 for small accessories to over €4,000 for high-capacity Regenwasserwerke (Sigma, Optima, Maxima), with larger commercial products (e.g., WFF 300) sold on a quote basis. Customer segments span residential homeowners, gardeners/entry-level buyers, commercial/industrial buildings, sports facilities, and industrial process-water users; reference projects include Maracanã Stadium, Google HQ New York, IKEA Rothenburg, and a rainwater project on the Greek island of Aegina. Products carry 5–10 year warranties, comply with DIN EN 12056/EN752 and DIN 1989, and the company employs approximately 5 people with no disclosed external funding.
WISY AG firmographics
Firmographics- Name
- WISY AG
- Legal name
- WISY AG
- Website
- https://wisy-water.com
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- WISY AG is a German manufacturer founded in 1989 that sells Made-in-Germany rainwater filtration and harvesting systems directly via e-commerce to residential, commercial, and industrial customers worldwide, anchored by proprietary vertical stainless steel filter mesh technology.
- Ownership category
- akta.pro rank
WISY AG industry classification
Industry- Product category
- Rainwater Harvesting and Filtration Equipment
- NAICS
- Pump and Compressor Manufacturing (33391), Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914)
- SIC
- Pumps & Pumping Equipment (3561), Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)
- akta.pro primary industry
- Separation & Filtration Equipment (Filters, Centrifuges, Membranes) (IMAHAEAB)
- akta.pro secondary industries
- Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ), Water Systems & Treatment (Pumps/Boilers/Water Heaters/Filtration) (IMAIABAK)
Keywords
Where WISY AG is headquartered
LocationHeadquarters
- HQ city
- Kefenrod-Hitzkirchen
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
WISY AG business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Product Sales (E-commerce): WISY AG generates revenue through direct product sales via their e-commerce website. Products include rainwater filters, pumps, cisterns, rainwater management units, and accessories. The company offers products ranging from €58 (floating switch for replenishment) to over €4,000 (Maxima rainwater management unit). Some commercial/industrial products require quote-based pricing.
- Professional Consulting: WISY provides professional consulting services for rainwater system planning, helping customers select appropriate filters, storage, and system components for their projects.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | LineAr 100 Cistern Filter |
| Unit Pricing | Pay-as-you-go | WFF 100 Vortex Fine Filter |
| Unit Pricing | Pay-as-you-go | WFF 150 Vortex Fine Filter |
| Unit Pricing | Pay-as-you-go | WFF 300 Large-Scale Vortex Fine Filter |
| Unit Pricing | Pay-as-you-go | Regenwasserwerk Sigma (Sigma Rainwater Management Unit) |
| Unit Pricing | Pay-as-you-go | Regenwasserwerk Optima (Optima Rainwater Management Unit) |
| Unit Pricing | Pay-as-you-go | Regenwasserwerk Maxima (Maxima Rainwater Management Unit) |
| Unit Pricing | Pay-as-you-go | Regentonne Stabilix 500 Liter (Stabilix Rain Barrel) |
| Unit Pricing | Pay-as-you-go | Filtersammler FS (Filter Collector) |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels6 records
WISY AG product offering
Product offeringCore offering
WISY AG manufactures and sells rainwater filtration and harvesting systems built around its proprietary vertical stainless steel filter mesh technology. The product range spans downpipe filters (Filtersammler FS), vortex fine filters (WFF 100/150/300 series), cistern filters (LineAr 100), rainwater management units (Regenwasserwerke Multimat/Sigma/Optima/Optima Plus/Maxima), submersible and suction pumps, storage tanks, rain barrels, and complete bundled systems for residential and commercial applications.
Product overview
WISY AG is a German manufacturer specializing in rainwater harvesting and filtration systems with a modular product portfolio centered on their 4-stage filtration system. The core offering consists of three filter types (Filtersammler FS for downpipes, Wirbel-Feinfilter WFF series for underground installation, and Zisternenfilter LineAr for cistern installation), complemented by Regenwasserwerke (Sigma, Optima, Maxima) that manage water distribution and automatic mains water switching, Regenwasserpumpen for water extraction, and comprehensive accessories including floating suction filters, overflow siphons, and storage tanks. The systems are designed for both residential (single/two-family homes) and commercial applications (sports facilities, large buildings), with the largest WFF 300 filter handling up to 3,000 m² roof areas. Products are manufactured in Germany with a focus on self-cleaning, low-maintenance stainless steel filter technology and are complemented by a 5-10 year warranty.
Differentiator
Problem solved
Functional benefit
Products and services
- Filtersammler FS (Filter Collector / Downpipe Filter)
- Wirbel-Feinfilter WFF 100 (Vortex Fine Filter 100)
- Wirbel-Feinfilter WFF 150 (Vortex Fine Filter 150)
- Wirbel-Feinfilter WFF 300 (Large-Scale Vortex Fine Filter)
- Zisternenfilter LineAr 100 (Cistern Filter)
- Regenwasserwerke (Multimat, Sigma, Optima, Optima Plus, Maxima) - Rainwater Management Units
- Regenwasserpumpen (Multigo, AspriPlus, Provedo, Beta) - Rainwater Pumps
- Ansaugfilter (Suction Filters - Fine and Coarse)
- Schaltautomat Zeta 02 (Pump Switching Automatic)
- Regentonne Stabilix (Rain Barrel)
- Regenwasser-Zisternen & Kellertanks (Underground Cisterns and Basement Tanks)
- Trennstationen & Trinkwasser-Nachspeisung (Separation Stations and Mains Water Top-up)
- Überlaufsiphon DN 110 / DN 200 (Overflow Siphon)
- Komplettsets (Complete Rainwater Harvesting System Bundles)
Quantifiable outcome
- Water yield >90% at 1.4 l/min (LineAr 100)
- +3 more outcomes
Companies that use WISY AG
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles3 records
WISY AG technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
WISY AG partnerships and signals
Strategic signalScale indicators3 records
Recent moves6 records
Expansion highlights5 records
WISY AG competitors and assessment
Company assessmentBroad incumbents
- ACO Group: Large European water-management group covering surface drainage, stormwater treatment, and rainwater systems. Overlaps with WISY in rainwater harvesting but operates as a broad portfolio incumbent rather than a niche specialist.
- Xylem Inc. Large global water technology company spanning pumps, filtration, and treatment infrastructure. Adjacent to WISY in filtration and pump categories but operates at utility/municipal scale rather than residential rainwater.
- Kingspan Water & Energy: Global provider of rainwater harvesting, stormwater management, and hot water solutions under the Kingspan group. Competes with WISY on commercial-scale rainwater systems with significantly broader geographic and product reach.
- Premier Tech Water and Environment: International water and environmental solutions provider offering rainwater harvesting, septic, and stormwater products. Overlaps with WISY's commercial-scale projects and competes for architect/specifier mind share.
- Culligan International: Established water treatment company offering filtration, softening, and reuse products for residential and commercial customers. Overlaps with WISY in household water treatment but with much broader product and geographic scope.
- Watts Water Technologies: Global manufacturer of water-related products including plumbing, filtration, and water reuse systems. Competes at the broader level in water treatment and pumps rather than as a pure-play rainwater specialist.
Direct peers
- Otto Graf GmbH (GRAF): German manufacturer of rainwater harvesting systems, cisterns, and stormwater management products. Directly competes with WISY across residential and commercial rainwater storage and filter categories in the DACH region.
- 3P Technik Filtersysteme GmbH: Germany-based specialist in rainwater filters, cistern filters, and overflow siphons. Already a WISY supplier partner but also an overlapping competitor selling similar vortex/cistern filter technology.
- Rewatec: European manufacturer of rainwater storage tanks and complete rainwater harvesting systems, competing head-to-head with WISY's cistern and Komplettset offerings, particularly in residential and small commercial segments.
Regional players
- Rain Harvesting Pty Ltd: Australian rainwater harvesting specialist focused on residential and commercial tank systems, filters, and first-flush diverters. Comparable product category to WISY but operating primarily in the Australian/NZ market.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat3 records
Key risks5 records
Key highlights6 records
Customer concentration
WISY AG social profiles
Digital presenceWISY AG financial estimates
Financial estimateRevenue estimate
Valuation estimate
WISY AG leadership team
Management profileNumber of profiles
WISY AG funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
WISY AG M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about WISY AG
What does WISY AG do?
WISY AG manufactures and sells rainwater filtration and harvesting systems built around its proprietary vertical stainless steel filter mesh technology. The product range spans downpipe filters (Filtersammler FS), vortex fine filters (WFF 100/150/300 series), cistern filters (LineAr 100), rainwater management units (Regenwasserwerke Multimat/Sigma/Optima/Optima Plus/Maxima), submersible and suction pumps, storage tanks, rain barrels, and complete bundled systems for residential and commercial applications.
Is WISY AG a public or private company?
WISY AG is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was WISY AG founded?
WISY AG was founded in 1989. It employs 1 to 10 people.
Where is WISY AG based?
WISY AG is headquartered in Kefenrod-Hitzkirchen, Germany, in the Europe region.
How does WISY AG make money?
Two revenue lines are on record. Product Sales (E-commerce) is the primary driver. The others are professional Consulting.
Who are WISY AG's main competitors?
Broad incumbents on record are ACO Group, Xylem Inc., Kingspan Water & Energy, Premier Tech Water and Environment, Culligan International and Watts Water Technologies. Direct peers are Otto Graf GmbH (GRAF), 3P Technik Filtersysteme GmbH and Rewatec. Rain Harvesting Pty Ltd is listed as a regional player.
Does WISY AG have an API?
No public API is recorded for WISY AG.
What industry is WISY AG in?
WISY AG's product category is Rainwater Harvesting and Filtration Equipment. Its primary akta.pro industry code is IMAHAEAB, Separation & Filtration Equipment (Filters, Centrifuges, Membranes), with a secondary code of IMAHAEAJ, Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems). Its NAICS code is 33391 and its SIC code is 3561.