Dönni Solar & Bau provides customized solar solutions for residential and commercial clients. From consultation and planning to the installation of photovoltaic systems, we focus on sustainable energy and top-quality service. Our expertise includes roof renovation, building technology, and energy efficiency solutions. Benefit from eco-friendly solar power and optimize your energy costs. With cutting-edge technology and years of experience, we help you transition to renewable energy.

Wir haben unsere WCs ersetzt. Die Begehung und anschließenden Varianten-Offerten haben uns sehr überzeugt. Die Lieferung und Ausführung war Top. Wir fühlen uns äußert zufrieden auf unserem neuen Thron.

Ackermann AG in Egnach delivers over 120 years of expertise in professional HVAC planning and energy consulting across Eastern Switzerland. We design heating, ventilation, air conditioning and sanitary systems for residential, commercial and industrial buildings. Our services include bathroom renovation coordination, heating system replacement planning, energy optimisation and sustainable solutions focusing on renewable energy. With technical competence, precision and a commitment to quality, we support architects, builders and private clients in realising efficient building technology concepts. Contact us for tailored HVAC planning.

Sehr nette und kompetente Fachleuten

Sehr gute Zusammenarbeit mit anderen Firmen Fairer Preis Gute Arbeit

Sehr geehrter Herr Vier Nochmals herzlichen Dank für Ihre flotte und zuverlässige Arbeit. In der heutigen Zeit ist es sehr selten, solch eine kompetente Beratung zu erhalten, von der Auftragsannahme, der Ausführung bis hin zur Abrechnung hat alles reibungslos funktioniert. Ich empfehle Sie wärmstens, eine solche Handwerker-Arbeit findet man heute leider selten. Gerne wieder! Gruss R.

Von A-Z alles professionell, freundlich und kompetent, ich werde euch gerne stets weiterempfehlen! Liebe Grüsse Ronny

Netter und Freundlicher Kontakt.

As a holistic partner for all concerns and construction projects relating to building technology, we implement high-quality and optimized solutions in accordance with the wishes and goals of our customers. From simple heating system replacements to solar systems to complex installations, we are happy to assist you. Our solutions in the areas of heating, ventilation, air conditioning and solar collectors / photovoltaics are created in close cooperation with our sister companies (planning & engineering - s3 GmbH , execution - HSH AG ) and in constant contact with the client. This enables us to accompany you from decision-making through installation to system optimization and maintenance. Our transparent approach creates systems that are not only sustainable, but also mesh seamlessly and are in harmony with the needs of the users and residents of the building.