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.

sehr professionell und kundenorientiert. Roger Bolli hat die Erneuerung unserer Wärmepumpe super koordiniert und umgesetzt. Wir würden Bolli Heizungen jederzeit wieder engagieren. Kurt und Victoria Brändli, Malans

I offer professional maintenance services for your heating system to ensure it runs efficiently and safely. Choose between a comprehensive maintenance contract (including spare parts) or a basic maintenance contract (excluding spare parts) tailored to your needs. My services include cleaning, inspection, and optimization of burners, gas boilers, and heating systems. With my 24-hour on-call service , I am always here for emergencies. Regular boiler descaling, emissions checks, and personalized reminders for scheduled maintenance are also part of my offering. Count on quality, dedication, and personal attention – for a worry-free home!