Heat pumps The Weishaupt heat pump range. The right solution for every application. Heating systems Weishaupt condensing boilers WTC gas or WTC oil - compact. Efficient heat is not a question of space. Solar systems Combined with gas, oil or heat pump. Heat from the sun. Burners Weishaupt oil, gas and dual-fuel burners up to 17,000 kW. Patented multiflam® technology. Weishaupt products - that is reliability As the official factory representative of Max Weishaupt GmbH, we supply our customers with the technologically advanced and reliable products of our innovative partner. Sales Our dedicated teams advise you in a solution-oriented manner and with extensive experience. Your needs meet many years of expertise with us. The best conditions for happy and satisfied customers. That is our goal! Customer service Optimal operation and functionality of your system are the most important thing. In the event of an emergency, our customers rely on our on-call service, 24 hours a day, every day. Competence center Everything that helps the customer. We are happy to support you with important information and documents.

Electrical installations, breakdown service, telecom, home automation, periodic control, lightning conductors, alarms, photovoltaic panels, fibre optics, computer cabling, centralized vacuum cleaner,

The Alvazzi Group , a key player in the Swiss technical services sector, brings together over 300 specialists to provide comprehensive and innovative solutions across multiple fields: • Heating and cooling • Ventilation and air conditioning • Regulation systems • Sanitary installations • Metal roofing and cladding (Valais canton only) • Electrical services • Telematics • Maintenance and repairs • Energy management • Multiservice maintenance A Single Point of Contact for Optimized Management Whether your project is simple or complex, we provide a dedicated point of contact to centralize your requirements and offer efficient and high-performance multi-technical solutions . Thanks to our expertise, we support our clients in a global approach to energy efficiency , ensuring comfort and well-being while reducing environmental impact. Local Presence for a Fast and Reliable Service The Alvazzi Group operates in several regions of Switzerland, with offices in Lausanne, Geneva, Yverdon, Delémont, and Neuchâtel . Our local presence allows us to intervene quickly for installations, maintenance, and repairs. Commitment to Training and Development We invest in the future by training a new generation of professionals each year. We offer apprenticeships in heating, sanitary systems, electricity, building technology, and commerce to ensure continuity and maintain a high level of service excellence. 24/7 Emergency Service Need immediate assistance? Our repair service is available 24/7 at 0800 442 884 . Alvazzi Group – Your trusted partner for sustainable and high-performance technical solutions. Discover our services at www.alvazzigroupe.com

The Riesen Building Technology AG is a company with tradition and experience. We are your specialist for building technology. Here you will find personal and competent advice. The plumbing, heating, and roofing company Arthur Riesen AG was acquired by Daniel von Mühlenen in 2003 and transformed into Riesen Building Technology AG. Riesen Building Technology AG took over all 3 employees. Son Andres successfully completed his first apprenticeship as a roofer at LWB in Bern in 2006. After his apprenticeship in 2007 as a plumbing installer at Chapuis & Zürcher AG in Bern, he deepened his professional knowledge for another year. In 2010, Andres successfully obtained his 3rd Federal professional title as a heating specialist in building technology planning at Haustechnikplanung Abbühl in Spiez. To gain further professional experience, he also worked at Böhlen AG in Bern. In 2010, Andres joined the company at 40%. Since 2012, he has been acting as managing director. He is supported by his dedicated, long-standing plumbing and heating installers as well as a trained roofer. Our Services - Plumbing - Heating - Roofing - Lightning protection - Fireplace construction - Bathtub replacement - Solar - Enamel repairs We are happy to be your contact for work around your home. Customer satisfaction is of great importance to us. We guarantee this through quality, performance, and price. The building envelope has many requirements to fulfill. We are happy to assist you. From planning to complete execution. We are professionals with appropriate training. We don't leave our customers out in the rain.

Freundliches, kompetentes Team- vielen Dank für die Beratung und Umsetzung! wir sind sehr zufrieden mit unserem Umbau- ihr wart die einzigen Handwerker wo alles reibungslos lief!

Vielen Dank Arnaud und Simon für die außergewöhnliche Arbeit. Es ist selten, professionelle, kundenorientierte, fürsorgliche, gewissenhafte und freundliche Elektriker zu finden, die die Arbeit in einfachen Worten erklären können, die die Kunden verstehen. Ich würde Ihnen wärmstens empfehlen, Ihre Fähigkeiten für andere einzusetzen. Liz & Malcolm

Virtech Energie Sàrl specialises in general electrical installations, including technical advice and studies in this field. General electrical installation High current electrical installations • Repairs • ITTO inspections • Electric vehicle terminal installations with cantonal subsidy • Lightning conductors • Solar installations • Maintenance and servicing of installations • Emergency lighting • Special installations (clean rooms, explosive rooms, etc.) Low current electrical installations • Home automation installations • Computer networks • Alarm systems • Video surveillance systems Consulting • Defining the client's present and future needs • Preparation of quotations • Creation of specifications for project managers • Follow-up of the construction site • Preparation of (electrical) bills of quantities • Optimisation of installations • Calculation of depreciation according to current consumption • Extension of your electrical network Building technology • Building automation • Building security • Replacement of a traditional water heater with a heat pump water heater • Replacement of your old radiators or electric storage tanks • Heat pumps • Solar installation • Thermal installation • Danfoss system for controlling your heating Translated with www.DeepL.com/Translator (free version)

Change Management Ltd stands for a sustainable orientation of your company. "Sustainable future" for your business is our motivation. We help you to make the right adjustments and achieve your company goals: in a human, organizational, technological and economical way (ESG)

RESEARCH PROJECTORS Project manager in building technology "heating". Our services: Heating systems Fuel oil Gas Wood Pellet CAP Solar Thermal Sanitary facilities Flow lines Sanitary appliances Descaling Water heater Fuel oil and gasoline tanks Installation Revision Sanitation Waterproofing Burner maintenance Help Desk