TechInfo 1-888-484-8643

Expanded Technical Support for Heating Contractors


The Viessmann TechInfo center sets the industry standard for customer service and technical support. Whether installing or troubleshooting, our North American industry partners can access expanded technical support with a single phone call.

Each call will generate a detailed service record specific to the installation address. By recording your important product and support information in our database, repeat calls are fast and easy. Plus, your customers have the added benefit of product tracking for future system and product upgrades.

When calling the TechInfo center, please be prepared to answer the following questions:

  • What Viessmann model you are working on?
  • What is the 12, 16 or 18 digit serial number?
  • What is the installation address?
  • What date was the product installed?


Your time is important. With the TechInfo center, you can count on prompt and professional technical support. The next time on-site questions arise, be sure to call 1-888-484-8643!

Heating Season Schedule September 8* – April 30 
Days Hours (EST)
Monday to Friday 7:00 am to 8:00 pm
Saturday and Sunday
including statutory holidays		 Messages checked twice daily
11:00 am and 4:00 pm


Expanded after-hours technical support is available during the Heating Season Schedule from the first weekend after Labor Day* to April 30. The Summer Schedule provides standard 8:30 am – 5:00 pm (EST) support available across North America beginning May 1. After-hours support is not available during the Summer Schedule.  


* Note: In 2012, this date falls on September 8. 



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