2020 Holiday Schedule for Technical Support
Our normal business hours are 8:00 am to 5:00 pm (Eastern Time) Monday through Friday.
Our office will be closed for the holidays from:
- December 24 to 28
- December 31 (starting at 12:30 pm) to January 1
We will be open from Tuesday December 29 until Thursday December 31 at 12:30 pm.
If you have a Viessmann fault code, please take a look at our Fault Code Checker for troubleshooting information.
If you are looking for a contractor in your area, please visit our Contractor Locator.