Öko-Haustechnik GmbH provides professional plumbing, heating and photovoltaic solutions across Eastern Switzerland and the Rhine Valley. With over 15 years of hands-on experience, the company supports new builds, renovations and modernisation projects from planning to installation. Services include sanitary installations, modern heating systems, heat pumps, underfloor heating and solar power systems. Clients benefit from reliable workmanship, clear communication and durable, energy-efficient solutions designed for long-term comfort and sustainability.

Kather Sanitär Heizung GmbH (Amriswil) delivers plumbing, heating and ventilation services across Switzerland. Since 2003, we support private, commercial and industrial projects—from single-family homes to large-scale builds. We handle planning, installation, upgrades, maintenance and fast troubleshooting. Our services include sanitary installations, bathroom renovations, modern heating systems (heat pumps, oil, gas, wood), underfloor heating, radiators, and ventilation solutions for residential and commercial properties, including heat recovery systems. Expect high-quality materials, efficient processes and personal service.