Lista partenerilor de service Viessmann este prezentata mai jos.
| LOCALITATE | FIRMA | TELEFON |
| Alba Iulia | Vimed Com | 0258817988 |
| Bravo Instal | 0258831044 | |
| Alexandria | PRODOMUS | 0247312022 |
| NELY IMPEX | 0247312002 | |
| Arad | Termocontrol | 0257206566 |
| InstaL GROUP | 0257276466 | |
| Gela Service | 0257279489 | |
| Azuga | Triserv service | 0746012829 |
| Bacau | Termo-Invest | 0234519519 |
| Dedeman | 0234513330 | |
| IZOINSTAL | 0234511000 | |
| Energo-Instalati | 0234514635 | |
| FAST TEHNICAL ASSISTANCE | 0234513803 | |
| Baia Mare | MEDCO ELECTRIC | 0262250995 |
| Extrem Impex | 0262218519 | |
| Botosani | Meridian Botosani | 0231517989 |
| Europa Group | 0232279300 | |
| Braila | Magio PROD Serv | 0239616344 |
| Urban Serv | 0239612550 | |
| Magio PROD Serv | 0239616344 | |
| Codrut Com | 0239620103 | |
| Brasov | Mondoinstal | 0268428817 |
| Meridian Secelean Instal | 0268315556 | |
| Condmag | 0268414954 | |
| Bucuresti | Alpha Expert Therm | 0214600735 / 36 |
| Insaterm Bucuresti | 0213218495 | |
| Experterm | 0213440080 | |
| Termo Service SRL | 0213365994 | |
| Buzau | Termconcept | 0238722251 |
| Calarasi | Romanor | 0242322602 |
| Campina | ROYAL N Servicii | 0244336063 |
| Tumag service | 0244371142 | |
| Campulung | Boca Comp | 0248512706 |
| Gecon Termica 2002 | 0248511203 | |
| Naomi Vidal 2001 | 0248530025 | |
| Cluj Napoca | Promotor | 0264433400 |
| Inter Instalatii Service | 0264403399 | |
| Intel House | 0722642102 | |
| Sagrada Construct | 0264433779 | |
| Codlea | Grinero | 0268251686 |
| Lirov | 0268251818 | |
| Constanta | A&G Roterm Service | 0741258008 |
| AS Group Romterm | 0241552997 | |
| Vela Impex | 0241611169 | |
| Optimkonfort | 0241670870 | |
| Dual | 0241670206 | |
| UFIAZ | 0241519913 | |
| Craiova | Aquaterm | 0251413420 |
| AB Instal | 0351441852 | |
| Cirus | 0251423757 | |
| Aquaterm | 0251413420 | |
| Deva | Optim Sig Instal | 0254220020 |
| Focsani | Olimpia Instalatii | 0237213496 |
| Topstal | 0237230194 | |
| Hunedoara | Intercom Instal | 0254712123 |
| Iasi | RCA MOLDOTERM | 0232220633 |
| Das | 0232230637 | |
| Termoplus | 0232231687 | |
| Medias | Posada Med | 0269838071 |
| Odorheiu Secuiesc | Melinda Impex | 0266207420 |
| Onesti | SERVOTERM | 0234321493 |
| Oradea | Climarop Prest | 0259418270 |
| Pascani | Energotop | 0232722105 |
| Piatra Neamt | AXA Imex | 0233221251 |
| KLIMER SERV | 0233210647 | |
| Pitesti | Uni Trade Corporation | 0248221558 |
| Ploiesti | Comtec | 0244221007 |
| SHR DISTRIBUTIONS | 0244595083 | |
| Climelec Instal | 0244513640 | |
| Radauti | Ambi Instal | 0230560202 |
| Ramnicu Valcea | Termosystem Service | 0723159178 |
| Proterm | 0250714638 | |
| Satu Mare | Termoprim Service | 0261769345 |
| Instinct | 0261764875 | |
| Petra | 0261764875 | |
| F-Haus | 0261714781 | |
| Sibiu | AMMIBO | 0269244157 |
| Media Ringer | 0269233559 | |
| Sinaia | Argona Farm | 0244313480 |
| Slatina | Proinstal 2000 | 0249437355 |
| INSTAL GROUP | 0249433070 | |
| Suceava | Fiam | 0230510089 |
| Targoviste | Tehnoinstal | 0253225528 |
| Tomal Proiect | 0245216244 | |
| Crinon Prod | 0245640109 | |
| Jadcom | 0722553237 | |
| Targu Jiu | ELTOP | 0253218666 |
| Targu Mures | G&M Instalatii | 0265210955 |
| Targu Neamt | Servelectron | 0233791418 |
| Timisoara | Ruck Zuck | 0256211272 |
| Airmec Instal | 0256293168 | |
| Mecdaf | 0356217272 | |
| Vaslui | C&A Consulting | 0235312725 |
| Zalau | Tecs | 0260661194 |