Heizli Haustechnik GmbH — Obere Hönggerstrasse 9a, 8103 Unterengstringen, Switzerland

Last year, we had our roof insulated and replaced our old gas heating system with a Lambda air source heat pump. Mr. Stanic from Heizli supported us as our heating technician. He did a fantastic job and always provided excellent advice. We always felt valued as valued customers. We would like to thank him for the excellent work and friendly service. We are very happy with the result. A very heartfelt thank you again for the great work and support! We highly recommend Mr. Stanic!

Globetrotter

Excellent service, very helpful and always available. They replaced a (very) old boiler with very specific dimensions. They went to great lengths to find the best possible boiler, taking into account the available space and the required capacity, and then installed it. Very pragmatic. I would recommend them without hesitation.

M G (M G)

Heizli came highly recommended to us. Therefore, we had them install a new heating system, including new radiators. We were more than pleasantly surprised by their speed, flexibility, and professionalism. The company management has extensive experience in renovations. The quoted price was honored. We were completely satisfied and will definitely hire the Heizli team again.

Tania Al Hosseini

Many thanks to Mr. Stanic for his highly competent work. We would gladly work with Heizli Haustechnik AG again at any time.

Florian Schwerzmann

Extremely friendly and competent! The advice is open and very honest, and the prices are fair. We had an emergency, and even then, Heizli Haustechnik GmbH responded quickly and accommodatingly. Thank you very much! I highly recommend them!

Desiree R.

As a tenant and not the direct client for the repairs in my apartment, I can highly recommend Heizli Haustechnik after their service. The work was completed very professionally and without delay. They were quick, friendly, and efficient. Thank you very much.

jphilippe G