| Location | Address | Plant's Phone # | Contacts | Contact's phone # | Contact's Email |
| Warwick, RI | 45 Access Rd | 401-681-4047 | Robert Fazioli | (401) 681-4037 | faor@viessmann.com |
| Jose Antunes | (401) 681-4027 | atsj@viessmann.com | |||
| Literature | Alex Gonzalez | (401)-602-5597 |
gnza@viessmann.com |
||
| David Damiani | 401-681-4023 |
DamD@viessmann.com |