| Ettevõtte nimi | Reg. kood |
|---|---|
| HEAT3 OÜ (endine nimi 3 Selli OÜ) | 11256808 |
| HEAT UP OÜ kustutatud | 12733660 |
| HEAT NRG OÜ | 12239195 |
| COZY HEAT OÜ | 14595758 |
| HIGH HEAT OÜ | 16123845 |
| OSCO HEAT OÜ | 12293674 |
| HEAT-EST OÜ | 14775532 |
| FOMAD HEAT OÜ | 16576096 |
| HEAT POWER OÜ | 12770401 |
| NORDIC HEAT OÜ kustutatud | 12502528 |
| HEAT BUILDER OÜ kustutatud | 11443315 |
| HEAT SERVICE OÜ | 12081558 |
| INVERTER HEAT OÜ | 16024994 |
| HEAT SOLUTIONS OÜ | 16051672 |
| HEAT EXCHANGER OÜ kustutatud | 14776810 |
| HEAT RECYCLERS OÜ | 12423266 |
| HEAT BY NATURE OÜ | 12522330 |
| VENTUS ECO HEAT OÜ (endine nimi VENTUS Solar 1 OÜ) | 17060974 |
| HEAT-ENER GROUP OÜ | 12945616 |
| NORDIC HEAT GROUP OÜ kustutatud | 14774308 |
| VENTUS ELECTRICITY AND HEAT OÜ (endine nimi VENTUS Electricity and Heat Atlasa OÜ) | 17180236 |
| HEAT AND ENERGY CONSULTING OÜ kustutatud | 12730755 |
| HEAT AND COOL CONSTRUCTIONS OÜ | 16774710 |
| VENTUS ELECTRICITY AND HEAT JUGLA OÜ (endine nimi VENTUS Electricity and Heat 1 OÜ) | 17012252 |
| OILWORLD OÜ (endine nimi SW Heat OÜ) | 14714246 |
| OPTIRAK EESTI OÜ (endine nimi Heat and Light OÜ) | 11036946 |
| FROM HEAD TO HEAL OÜ kustutatud | 16900237 |
| HEAD OÜ | 11711661 |
| 4HEAD OÜ kustutatud | 12669613 |
| HEAP OÜ | 17339085 |
| HEART OÜ | 10242856 |
| TIM HEATH LANGUAGE AGENCY OÜ | 12422338 |
| HEA5 OÜ | 12749269 |
| HEAD RIIMID OÜ | 12180852 |
| TEEME HEAD OÜ kustutatud (endine nimi OÜ V 15) | 14753447 |
| HEAD LOAD OÜ kustutatud | 14131250 |
| HEAX INVEST OÜ | 17403601 |
| HEAD ARSTID OÜ | 10980376 |
| HEAD ACCOUNTING OÜ | 11298385 |
| HEAL US OÜ | 16687878 |
| HEAS MÕTTES OÜ | 16959928 |
| GWZ HEAL OÜ | 16792262 |
| RUMBLE HEAD OÜ | 16922144 |
| HEAD REHVID OÜ | 16914386 |
| HEART10 ART OÜ | 16892414 |
| PENCIL HEAD OÜ | 12761833 |
| HEAD ARHITEKTID OÜ | 10789170 |
| HEAD INVESTMENTS OÜ | 14009401 |
| HEAD CAPITAL OÜ | 14010999 |
| T-HEAD OÜ | 14593328 |