| 1 | SICOR SRL | Bucureşti Sectorul 2 | Bucureşti | 358.7 m | 181 |
| 2 | PYRONOVA IS SRL | Sat Şag, Comuna Şag | Timiş | 275.9 m | 210 |
| 3 | ENERGOMONTAJ SA | Bucureşti Sectorul 1 | Bucureşti | 248.5 m | 667 |
| 4 | E.ON ASIST COMPLET S.A. | Municipiul Târgu Mureş | Mureş | 247.7 m | 770 |
| 5 | CRIOMEC SA | Municipiul Galaţi | Galaţi | 243.3 m | 626 |
| 6 | DIVERSINST SRL | Municipiul Craiova | Dolj | 181.7 m | 155 |
| 7 | DAS SRL | Municipiul Iaşi | Iaşi | 178.9 m | 217 |
| 8 | FRIGOTEHNICA S.A. | Bucureşti Sectorul 2 | Bucureşti | 174.8 m | 183 |
| 9 | AVI PROD GRUP SRL | Sat Schiau, Comuna Bascov | Argeş | 163.6 m | 246 |
| 10 | R.C.T.I. COMPANY SRL | Municipiul Braşov | Braşov | 154.6 m | 121 |
| 11 | HIGH-TECH CLIMA SRL | Bucureşti Sectorul 3 | Bucureşti | 153.9 m | 233 |
| 12 | ICCO INSTAL SRL | Municipiul Braşov | Braşov | 134.1 m | 201 |
| 13 | PRO HART GROUP SRL | Municipiul Sibiu | Sibiu | 131.4 m | 200 |
| 14 | BRENNEKA INSTALL SRL | Municipiul Bacău | Bacău | 128.7 m | 167 |
| 15 | FLEXIK AUTOMATION SRL | Sat Dumbrăviţa, Comuna Dumbrăviţa | Timiş | 126.8 m | 228 |
| 16 | H.I.T & COLD INSTAL SRL | Bucureşti Sectorul 3 | Bucureşti | 113.7 m | 95 |
| 17 | IGNA INSTAL S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 107.5 m | 132 |
| 18 | CLIMA THERM CENTER SRL | Municipiul Iaşi | Iaşi | 106.5 m | 109 |
| 19 | REAL EUROTRANS SRL | Municipiul Buzău | Buzău | 105.1 m | 35 |
| 20 | HORECO IMPEX SRL | Sat Spătaru, Comuna Costeşti | Buzău | 102.5 m | 42 |
| 21 | ART INSTAL SRL | Municipiul Alba Iulia | Alba | 96.0 m | 57 |
| 22 | TIN LAVIR SERV SRL | Municipiul Brad | Hunedoara | 89.3 m | 43 |
| 23 | GOPRO INFRASTRUCTURE SRL | Municipiul Făgăraş | Braşov | 88.9 m | 92 |
| 24 | CORAL CONSTRUCT SRL | Bucureşti Sectorul 1 | Bucureşti | 82.9 m | 268 |
| 25 | ENGIE BUILDING SOLUTIONS SRL | Bucureşti Sectorul 4 | Bucureşti | 76.0 m | 183 |
| 26 | INSTAL EXPERT SRL | Municipiul Cluj-Napoca | Cluj | 75.6 m | 129 |
| 27 | UNICOOL INSTALATII FRIG SRL | Sat Sub Coastă, Comuna Apahida | Cluj | 75.0 m | 108 |
| 28 | ROCIP INSTAL SRL | Municipiul Piteşti | Argeş | 74.4 m | — |
| 29 | CLIMTEH SRL | Bucureşti Sectorul 2 | Bucureşti | 73.4 m | 94 |
| 30 | NISAL SRL | Municipiul Mediaş | Sibiu | 72.4 m | 90 |
| 31 | HAM TEHNIC SRL | Bucureşti Sectorul 3 | Bucureşti | 72.1 m | 69 |
| 32 | GLOBAL MAT INSTALL SRL | Bucureşti Sectorul 5 | Bucureşti | 68.7 m | 132 |
| 33 | CLIMATICO LINE SRL | Bucureşti Sectorul 2 | Bucureşti | 67.3 m | 41 |
| 34 | DACLIM HVAC SRL | Bucureşti Sectorul 4 | Bucureşti | 66.8 m | 96 |
| 35 | GAZ VEST RETELE S.R.L. | Municipiul Arad | Arad | 65.6 m | 66 |
| 36 | AVI COMPACT SRL | Bucureşti Sectorul 3 | Bucureşti | 63.3 m | 34 |
| 37 | MONTIN SA | Municipiul Ploieşti | Prahova | 62.9 m | 70 |
| 38 | PRO REFRIGERATION TEAM SRL | Bucureşti Sectorul 2 | Bucureşti | 61.4 m | 33 |
| 39 | STEEL MARCONSTRUCT SRL | Municipiul Tulcea | Tulcea | 59.1 m | 139 |
| 40 | BOG'ART BUILDING MANAGEMENT SRL | Bucureşti Sectorul 3 | Bucureşti | 57.6 m | 187 |
| 41 | CO2OLTEC COMMERCIAL REFRIGERATION DISTRIBUTION CZECH REPUBLIC S.R.O. PRAGA SUCURSALA BUCURESTI | Bucureşti Sectorul 2 | Bucureşti | 55.2 m | 29 |
| 42 | AMTEH INTERNATIONAL SRL | Bucureşti Sectorul 1 | Bucureşti | 53.6 m | 41 |
| 43 | DOSETIMPEX SRL | Municipiul Timişoara | Timiş | 53.2 m | 53 |
| 44 | LAS PROM SRL | Municipiul Târgu Mureş | Mureş | 52.0 m | 82 |
| 45 | SIFEE ACTION SRL | Sat Şelimbăr, Comuna Şelimbăr | Sibiu | 51.4 m | 50 |
| 46 | EZ PROJECT AG SRL | Bucureşti Sectorul 2 | Bucureşti | 51.0 m | 51 |
| 47 | MCE GEBAEUDETECHNIK ROMANIA SRL | Bucureşti Sectorul 1 | Bucureşti | 51.0 m | 146 |
| 48 | SKYLINE ENGINEERING S.R.L. | Municipiul Cluj-Napoca | Cluj | 50.1 m | 153 |
| 49 | A.M.E. RO SRL | Oraş Otopeni | Ilfov | 49.4 m | 38 |
| 50 | CORSEM IMPEX SRL | Loc. Gura Humorului, Oraş Gura Humorului | Suceava | 48.7 m | 76 |
| 51 | C.F.C. INSTAL SRL | Sat Moşniţa Nouă, Comuna Moşniţa Nouă | Timiş | 47.7 m | 43 |
| 52 | ECO TERM SRL | Municipiul Urziceni | Ialomiţa | 46.5 m | 94 |
| 53 | RADICAL INSTAL SOLUTIONS SRL | Bucureşti Sectorul 2 | Bucureşti | 46.3 m | 31 |
| 54 | SMART ECO PLUS S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 46.3 m | 105 |
| 55 | INSTAL GAZ TECHNOLOGY S.R.L. | Sat Hlincea, Comuna Ciurea | Iaşi | 46.1 m | 14 |
| 56 | CENTRAL SERVICE INSTAL SRL | Bucureşti Sectorul 4 | Bucureşti | 45.7 m | 107 |
| 57 | I.C.E.P. SRL | Loc. Buşag, Oraş Tăuţii-Măgherăus | Maramureş | 44.6 m | 25 |
| 58 | PROTEHNIC INSTAL HVAC SRL | Sat Sudiţi, Comuna Poşta Cîlnău | Buzău | 44.3 m | 18 |
| 59 | ASTRA ELECTRIC S.R.L. | Municipiul Arad | Arad | 44.0 m | 39 |
| 60 | GRUP ENERGOINSTAL SA | Municipiul Cluj-Napoca | Cluj | 43.9 m | 105 |
| 61 | MONTREPCOM SRL | Loc. Recea, Oraş Ungheni | Mureş | 43.7 m | 109 |
| 62 | BALTUR SIB SRL | Municipiul Sibiu | Sibiu | 43.5 m | 35 |
| 63 | MARAL SRL | Loc. Popeşti Leordeni, Oraş Popeşti Leordeni | Ilfov | 43.5 m | 39 |
| 64 | AGASI SRL | Municipiul Timişoara | Timiş | 43.2 m | 136 |
| 65 | QUATTRO ENGINEERING SOLUTIONS S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 41.3 m | 47 |
| 66 | IGNNEX FIRE SOLUTIONS SRL | Sat Moşniţa Nouă, Comuna Moşniţa Nouă | Timiş | 39.5 m | 35 |
| 67 | STEVE IMPEX SRL | Sat Stolna, Comuna Savadisla | Cluj | 38.7 m | 51 |
| 68 | INTERNATIONAL COOLING SYSTEMS SRL | Bucureşti Sectorul 3 | Bucureşti | 38.3 m | 30 |
| 69 | INSTALATORUL SA | Municipiul Alba Iulia | Alba | 37.7 m | 93 |
| 70 | NEXO INSTALCONSTRUCT SRL | Bucureşti Sectorul 3 | Bucureşti | 37.3 m | 63 |
| 71 | FRIGOTEHNICS SERV-COM S.R.L. | Oraş Măgurele | Ilfov | 35.7 m | 78 |
| 72 | KLAUS INDUSTRIAL SRL | Sat Măneşti, Comuna Măneşti | Prahova | 34.5 m | 5 |
| 73 | APA PLUS '97 SRL | Municipiul Timişoara | Timiş | 33.3 m | 59 |
| 74 | AIVA DUCT DIRECT SRL | Sat Căldăraru, Comuna Cernica | Ilfov | 33.2 m | 51 |
| 75 | ENERGOFOR SRL | Sat Hemeiuş, Comuna Hemeiuş | Bacău | 32.9 m | 38 |
| 76 | REVICOM OIL SRL | Bucureşti Sectorul 6 | Bucureşti | 31.9 m | 94 |
| 77 | STARTCON ENERGY S.R.L. | Municipiul Craiova | Dolj | 29.6 m | 31 |
| 78 | GENERAL M.P.M.IMPEX SRL | Bucureşti Sectorul 5 | Bucureşti | 28.5 m | 202 |
| 79 | INSTALDI SRL | Municipiul Târgu Mureş | Mureş | 28.2 m | 16 |
| 80 | THERMOFLUX SRL | Bucureşti Sectorul 2 | Bucureşti | 27.8 m | 59 |
| 81 | TERMOLINE SRL | Municipiul Oradea | Bihor | 26.5 m | 37 |
| 82 | COMFRIG SRL | Municipiul Slobozia | Ialomiţa | 26.0 m | 48 |
| 83 | ARIS ENGINEERING S.R.L. | Sat Ştefăneştii de Jos, Comuna Ştefăneştii de Jos | Ilfov | 25.5 m | 62 |
| 84 | MULTICONSULT ADVENTURE SRL | Bucureşti Sectorul 6 | Bucureşti | 25.4 m | 51 |
| 85 | AQUAGAS ENERGY S.R.L. | Municipiul Ploieşti | Prahova | 25.2 m | 34 |
| 86 | DIANOVA INSTAL SRL | Loc. Unirea, Municipiul Bistriţa | Bistriţa-Năsăud | 25.0 m | 35 |
| 87 | UNIVERSAL COMP PROD SRL | Bucureşti Sectorul 2 | Bucureşti | 24.7 m | 41 |
| 88 | TEHNOTERM SRL | Municipiul Iaşi | Iaşi | 24.6 m | 72 |
| 89 | TERMHIDRO SRL | Municipiul Brăila | Brăila | 24.4 m | 67 |
| 90 | MAGNUM THERM SRL | Sat Brătuleni, Comuna Miroslava | Iaşi | 24.1 m | 64 |
| 91 | NEPTUN ENGINEERING SRL | Bucureşti Sectorul 4 | Bucureşti | 23.7 m | 57 |
| 92 | PRIMO SRL | Municipiul Galaţi | Galaţi | 23.4 m | 46 |
| 93 | SUN POWER CLIMA S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 23.0 m | 15 |
| 94 | BUKOVINA DEVELOPMENTS SRL | Municipiul Câmpulung Moldovenesc | Suceava | 22.9 m | 60 |
| 95 | ECKON CEI SRL | Municipiul Alexandria | Teleorman | 22.8 m | 41 |
| 96 | CMV QUALITY INSTAL SRL | Municipiul Craiova | Dolj | 22.7 m | 43 |
| 97 | ACSA COOLTEAM S.R.L. | Municipiul Cluj-Napoca | Cluj | 22.4 m | 1 |
| 98 | ROMGRUP INSTAL CONSTRUCT SRL | Bucureşti Sectorul 1 | Bucureşti | 21.6 m | 43 |
| 99 | MASTER GAZ S.R.L. | Oraş Bragadiru | Ilfov | 21.5 m | 53 |
| 100 | COMINVEST SRL | Sat Fântânele, Comuna Fântânele | Teleorman | 21.4 m | 44 |