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Customer Service

Operating costs can be minimised with well-maintained heating equipment.  

For an appointment contact our heating service team at:


Tel.: +43 50 483-7100 or by e-mail:


At this telephone number you can also reach the heating emergency service, which in cold months of the year is open daily from 7.00 am to 5.00 pm – also on weekends and public holidays!

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Reliability for 5 generations

With 150 years of experience in this industry, HOLTER is a reliable partner for installation companies and manufacturers. Our service package goes far beyond the classic offers of a wholesaler. Targeted solutions for individual customer requirements and highest quality service are a matter of self-commitment for us, and demonstrated by all of our employees.