| 1 | Veolia Servicios Lecam SA. | Spain | Madrid | Calle Torrelaguna, 60 - 1ª Planta | Madrid | 28043 | veolia.***** | 1969 | $176,451,555 | 1,486 | N/A | N/A | A28233922 |
| 2 | Hvac Clima Servicio Y Controles Iberia SL. | Spain | Madrid | Avenida Real de Pinto, 91 - Edif. C, Escalera 2 | Madrid | 28021 | carrier.***** | 1976 | $172,865,357 | 450 | N/A | N/A | B28444834 |
| 3 | Fontasur S L | Spain | Sevilla | Calle Caldereros 29 | Sevilla | 41014 | N/A | 1982 | $145,553,112 | 2 | N/A | N/A | B41109901 |
| 4 | Remica, SA | Spain | Madrid | Calle Gamonal (p I Coop Vallecas) 25 | Madrid | 28031 | remica.***** | 1984 | $89,641,968 | 645 | N/A | N/A | A28896330 |
| 5 | Arce Clima Sistemas Y Aplicaciones SL | Spain | Tarrío | Calle I (pol. Industrial de Alvedro) 17 | La Coruña | 15180 | arceclima.***** | 2001 | $78,593,951 | 277 | N/A | N/A | B15814296 |
| 6 | Nordes Ancin, S.A. | Spain | Cambre | Poligono Industrial (espiritu Santo) (cl Monier), 11 - Parc. 36 | La Coruña | 15650 | nordesancin.***** | 1997 | $70,112,039 | 177 | N/A | N/A | A15617855 |
| 7 | Agefred Slu | Spain | Barcelona | Calle L'Escultor Canet 35 | Barcelona | 08028 | agefred.***** | 1974 | $53,499,626 | 171 | N/A | N/A | B08357329 |
| 8 | Clauger Refrigeracion Iberia Sau | Spain | Madrid | Calle Julian Camarillo 53 | Madrid | 28037 | bricopuertas.***** | 1966 | $52,875,400 | 200 | N/A | N/A | A28124204 |
| 9 | Valtria Engineering SA. | Spain | Madrid | Calle Julian Camarillo, 53 - Plata 4 Pta 1 | Madrid | 28037 | valtria.***** | 2012 | $52,596,617 | 120 | N/A | N/A | A98474984 |
| 10 | Recursos De La Biomasa SL | Spain | Soria | Calle Medinaceli, 2 - B 1º | Soria | 42003 | calorsostenible.***** | 2007 | $50,458,859 | 100 | N/A | N/A | B24561243 |
| 11 | Cofrico Sociedad Limitada | Spain | Noia | Poligono Industrial (c/ Parroquia de Guisamo), B06 | La Coruña | 15166 | cofrico.***** | 1985 | $46,559,067 | 193 | N/A | N/A | B27024546 |
| 12 | Alternativas Riojanas Eolicas Y Solares SL | Spain | Logroño | Calle la Portalada (pg Portalada I), 50 - Nav 8 | La Rioja | 26006 | aresol.***** | 2000 | $44,621,424 | 131 | N/A | N/A | B26310094 |
| 13 | Tecman Servicios De Valor Añadido Sociedad Limitada Unipersonal | Spain | Altzaga | Camino Enekuri, 10 - 2 | Vizcaya | 48950 | N/A | 2008 | $39,585,319 | 325 | N/A | N/A | B95542858 |
| 14 | Insserco Sau | Spain | Madrid | Calle Maestro Alonso 24 | Madrid | 28028 | insserco.***** | 1983 | $37,720,935 | 48 | N/A | N/A | A28402584 |
| 15 | Fulton Sociedad Anonima | Spain | Paterna | Ronda Auguste Y Louis Lumiere (pq Te) 3 | Valencia | 46980 | fulton.***** | 1966 | $36,000,193 | 81 | N/A | N/A | A46035770 |
| 16 | Mas Sol Energia 15 Sociedad Limitada. | Spain | Lebrija | Avenida Atenas 123 | Sevilla | 41740 | massolenergia.***** | 2017 | $35,739,417 | 157 | N/A | N/A | B90346370 |
| 17 | Mantenimientos E Instalaciones Aclimar SL | Spain | Alcorcón | Calle Polvoranca (pol. Industrial, Urtinsa Ii) 138 | Madrid | 28923 | aclimar.***** | 1998 | $35,574,224 | 150 | N/A | N/A | B82124967 |
| 18 | Clima Insular SL | Spain | Palma | Calle Gremi de Passamaners, 5 - 1º-8ª | Islas Baleares | 07009 | climainsular.***** | 1985 | $34,861,953 | 70 | N/A | N/A | B07156656 |
| 19 | Ullastres SA | Spain | Madrid | Calle Conde de Vilches 22 | Madrid | 28028 | ullastres.***** | 1951 | $34,166,805 | 194 | N/A | N/A | A28051597 |
| 20 | Gestion Integral De Instalaciones SL | Spain | Sant Cugat del Vallès | Avenida Alcalde Barnils (ed Cubic, Can Sant Joan), 72 - Piso 1 | Barcelona | 08174 | geinstal.***** | 1994 | $32,887,739 | 283 | N/A | N/A | B60650801 |
| 21 | Tuberias Y Climatizacion SL | Spain | Madrid | Calle el Real de San Vicente 11 | Madrid | 28051 | tuclimasl.***** | 2000 | $29,360,318 | 43 | N/A | N/A | B82869751 |
| 22 | Osg Serveis Grup SL. | Spain | Girona | Calle Joan Torro I Cabratosa 18 | Girona | 17005 | osg.***** | 1994 | $29,273,521 | 210 | N/A | N/A | B17395781 |
| 23 | Sistemas Valcom SL | Spain | Valdepeñas | Avenida del Vino 63 | Ciudad Real | 13300 | sistemasvalcom.***** | 2007 | $27,735,306 | 229 | N/A | N/A | B13463229 |
| 24 | Saneamientos Cruz SL | Spain | Córdoba | Calle Gema (pol. Industrial del Granadal) 5 | Córdoba | 14014 | saneamientoscruz.***** | 1989 | $27,374,406 | 80 | N/A | N/A | B14223184 |
| 25 | Vivendio Sostenibilidad Energetica SL | Spain | Granada | Calle Torre de Comares, 1 - Bis | Granada | 18007 | vivendio.***** | 2010 | $27,118,152 | 90 | N/A | N/A | B18943845 |
| 26 | Rco 21 SL | Spain | Palma | Calle Llucmajor 38 | Islas Baleares | 07006 | rcogrup.***** | 1997 | $26,368,256 | 153 | N/A | N/A | B07809296 |
| 27 | Kinarca SA | Spain | Vigo | Camino Romeu 25 | Pontevedra | 36330 | kinarca.***** | 1989 | $25,599,875 | 29 | N/A | N/A | A36646040 |
| 28 | Gragera Industrial Sociedad Anonima | Spain | Almendralejo | Calle Perez Rodriguez (cr Badajoz Km 57,600) 8 | Badajoz | 06200 | zemsania.***** | 1978 | $25,568,839 | 90 | N/A | N/A | A06010185 |
| 29 | Integral De Instalaciones Mecanicas SL | Spain | Santa María del Camí | Poligono Industrial Son Llaut (cl Guillem Bujosa Rossello) 1 | Islas Baleares | 07320 | i2m.***** | 2007 | $25,158,380 | 51 | N/A | N/A | B57518516 |
| 30 | Catri Sociedad Limitada | Spain | Móstoles | Calle Mercurio (pol Industrial la Fuensanta) 13 | Madrid | 28936 | catri.***** | 1973 | $24,316,688 | 63 | N/A | N/A | B28335180 |
| 31 | Socenergy SL. | Spain | València | Calle de la Ciutat de Melilla 6 | Valencia | 46017 | N/A | 2007 | $24,127,782 | 187 | N/A | N/A | B97944714 |
| 32 | Humiclima Est SA | Spain | Palma | Calle Gran Via Asima (pol Industrial Son Castello) 29 | Islas Baleares | 07009 | friusa.***** | 1976 | $24,107,708 | 115 | N/A | N/A | A07050586 |
| 33 | Instalaciones Comerciales Y Frigorificas De Vigo SL | Spain | Reguengo | Lugar Gandara (parroquia de Tameiga), S/n | Pontevedra | 36416 | icofrio.***** | 1985 | $24,009,987 | 40 | N/A | N/A | B36634087 |
| 34 | Proteccion Contra Incendios Clima SL | Spain | Cabanillas del Campo | Calle Francisco de Medina Y Mendoza (pol 2), S/n | Guadalajara | 19171 | pciclima.***** | 2006 | $23,863,992 | 40 | N/A | N/A | B84886910 |
| 35 | Instalaciones Y Mantenimiento De Gestiones Energeticas SA | Spain | Sevilla | Avenida Parsi (6 Pol. Industrial Parsi) 41 | Sevilla | 41016 | imangener.***** | 2011 | $23,311,670 | 85 | N/A | N/A | A91974196 |
| 36 | Prefabricacion Y Montajes Del Noroeste SA | Spain | Noia | Calle Parroquia de Guisamo ((pg Ind Bergondo)), S/n | La Coruña | 15165 | premonor.***** | 1999 | $23,265,176 | 107 | N/A | N/A | A15686637 |
| 37 | Atil Cobra Sociedad Anonima | Spain | Madrid | Calle Cardenal Marcelo Spinola 10 | Madrid | 28016 | grupocobra.***** | 1969 | $22,896,106 | 500 | N/A | N/A | A28224038 |
| 38 | K Klima Noroeste SL | Spain | El Boalo | Poligono Industrial Acevedo, Parc. B Nave A 8 | Madrid | 15185 | kklima.***** | 2002 | $22,893,024 | 50 | N/A | N/A | B15830334 |
| 39 | Industrial Leridana Del Frio SL | Spain | Lérida | Calle Josep Segura Farre ((pg Ind Segre)), Par 706-A | Lleida | 25191 | frioindustrialenlleida.***** | 1986 | $22,763,854 | 120 | N/A | N/A | B25049438 |
| 40 | Ifi Facility SL. | Spain | Getafe | Calle Rio Bembezar, 8 - 1 Plt | Madrid | 28906 | N/A | 2015 | $22,597,690 | 112 | N/A | N/A | B87178661 |
| 41 | Proteccion Automatica Contra Incendios SA | Spain | Alcobendas | Calle de Francisco Gervas (p I Alcobendas) 3 | Madrid | 28108 | pacisa.***** | 1975 | $21,872,931 | 95 | N/A | N/A | A28408797 |
| 42 | Aidesegi SL | Spain | Derio | Avenida Txorierriko, 9 - Lj 3 | Vizcaya | 48160 | N/A | 2006 | $20,999,344 | 123 | N/A | N/A | B95416301 |
| 43 | Ipar Hotz SL | Spain | Villabona | Poligono Ubegun, Parc 1 Pab 1-2 | Guipúzcoa | 20150 | N/A | 2003 | $20,944,668 | 70 | N/A | N/A | B20827242 |
| 44 | Tecnocontrol Servicios SA | Spain | Tres Cantos | Ronda de Poniente 11 | Madrid | 28760 | sanjoseinmobiliaria.***** | 1983 | $20,840,709 | 212 | N/A | N/A | A28815322 |
| 45 | Saneamientos Garry SL | Spain | Madrid | Calle Cardeñosa 38 | Madrid | 28053 | garry.***** | 1989 | $20,813,184 | 16 | N/A | N/A | B79313516 |
| 46 | Servicios Instalaciones Y Mantenimiento Alga Internacional SL. | Spain | Madrid | Calle Osiris (san Blas Canillejas), 11 - 13 2 | Madrid | 28037 | N/A | 2013 | $20,183,859 | 25 | N/A | N/A | B86662418 |
| 47 | Climava SL | Spain | Viladecans | Avenida Generalitat, 143 - 01 | Barcelona | 08840 | climava.***** | 1979 | $19,812,130 | 100 | N/A | N/A | B08606055 |
| 48 | Stulz España SA | Spain | Alcorcón | Calle Carabaña (pol Ind Ventorro del Cano), S/n | Madrid | 28925 | stulz.***** | 2001 | $18,805,069 | 42 | N/A | N/A | A82873662 |
| 49 | Ingenieria E Instalaciones Aliter Sociedad Limitada. | Spain | Catarroja | Calle Numero 26 (pol. Industrial Boni), Nav 206 | Valencia | 46470 | alitersoluciones.***** | 2012 | $18,710,566 | 76 | N/A | N/A | B98491384 |
| 50 | Tempus Instalaciones SL. | Spain | Carrio | Calle Parroquia de Rois (pol Ind), Par F-3 | La Coruña | 15166 | tempusinstalaciones.***** | 2016 | $18,218,687 | 50 | N/A | N/A | B70479654 |