Carole
Moved into a house with a Viessmann boiler installed. It is far superior to the one in my other house. I had an issue with the room thermostat device and contacted the company. The customer service was excellent . They sent an engineer who sorted it out without delay. Great service and grand boiler .
3 years ago
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Viessmann Limited has a 4.3 average rating from 1,036 reviews

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