Het hoofdstuk Verwarmingsinstallaties betreft het geheel van leveranties en werkzaamheden, nodig voor het in het werk brengen en bedrijfsgereed maken van leidingen en kanalen voor warmtedistributie, toevoer van verbrandingsolie en verbrandingslucht, toevoer van rookgassen, lichamen voor warmteafgifte en apparaten voor warmte- opwekking.
| Naam | Specialisatie | Plaats |
|---|---|---|
| Witte Installatie B.V. | 55.00 60.00 61.00 62.00 68.00 70.00 50.00 51.00 52.00 53.00 55.00 60.00 61.00 62.00 70.00 43.22 | Ursem |
| Witteveen Utrecht Technische Installaties B.V. | 51.00 52.00 53.00 54.00 55.00 60.00 61.00 62.00 68.00 55.00 60.00 61.00 62.00 43.22 | De Meern |
| Wiva Loodgieters- en Dakdekkersbedrijf V.O.F. | 50.00 51.00 52.00 53.00 55.00 60.00 31.33.b 55.00 60.00 43.22 43.91 | Helmond |
| WKO Assist | 60.42 62.41 | Panningen |
| WKS (Wolf Klimaat Service) | 50.00 51.00 52.00 53.00 54.00 60.00 62.00 60.00 62.00 43.22 60.51 62.41 | Baarn |
| WKZ - Warmte-Koeltechniek Zeldenrust B.V. | 55.00 60.00 61.00 62.00 68.00 50.00 51.00 52.00 53.00 54.00 56.00 57.00 54.a 55.00 60.00 61.00 62.00 43.22 | Apeldoorn |
| WLC ( WARMELUCHTCENTRALE ) | 50.00 51.00 52.00 53.00 54.00 54.a 55.00 56.00 57.00 60.00 60.12 61.00 61.12 62.00 62.12 68.00 55.00 60.00 61.00 62.00 65.10 65.20 65.30 65.40 65.50 65.60 68.00 68.02 68.10 68.20 68.30 68.40 68.50 68.60 6 T6.61 6 T6.62 6 T6.63 46.83 | Sint-Truiden |
| WLH | 50.00 51.00 52.00 53.00 54.00 55.00 56.00 57.00 60.00 60.12 61.00 61.12 62.00 62.12 68.00 55.00 60.00 61.00 62.00 65.50 68.00 60.10 60.50 61.10 62.10 63.20 65.10 65.20 63.00 60.20 60.30 60.40 60.60 60.70 61.20 61.30 61.40 61.50 61.61 61.62 61.63 61.64 61.70 61.80 62.20 62.30 62.40 62.50 62.60 62.70 63.10 63.30 63.40 63.50 63.60 63.70 14.60 66.13 60.51 60.56 60.53 60.52 65.52 65.51 43.22 6 T6.61 6 T6.62 6 T6.63 6 T6.65 60.00 65.00 61.00 | TESSENDERLO |
| WLT Lansink Techniek | 60.51 | Reutum |
| WM Electricité Marcel Wattiez | 50.00 51.00 52.00 53.00 54.00 54.a 55.00 56.00 57.00 60.00 60.12 61.00 61.12 62.00 62.12 68.00 55.00 60.00 61.00 62.00 77.10 77.20 77.30 77.40 77.50 70.50 74.10 74.30 43.21 70.00 | Fleurus |
| WMQ Installaties B.V. | 56.4 60.41 52.00 53.00 51.00 60.00 61.00 70.00 75.a 70.33 70.81 70.82 | IJsselmuiden |
| WMR Loodgieters B.V. | 50.00 51.00 52.00 33.33 53.00 33.34 33.63 33.62 33.61 33.a 55.00 60.00 60.12 60.13 60.31 60.33 60.41 60.42 60.51 60.52 61.00 61.32 61.42 61.43 61.12 61.13 43.22 | Amsterdam |
| Woestenenk Installatiebedrijf | 57.00 43.21 60.51 | Barchem |
| Wohlan Installatietechniek | 60.51 41.20 | Breedenbroek |
| WOLF Energiesystemen B.V. | 61.41 60.51 62.41 61.42 61.00 60.00 60.83 0- 00.AI 57 68.00 66.00 57.30 57.21 57.70 57.5 52.00 56 53 | Kampen |
| Wolsink Open Haarden B.V. | 26.00 60.00 60.00 46.84 | Doesburg |
| Woodapple Service B.V. | 60.00 61.00 61.42 62.00 | Panningen |
| Woodstock Vloeren B.V. | 42.32 42.31 42.32.a 42.32.b 0-.1 42.00 60.00 | Obdam |
| Woolderink Technische Installaties B.V. | 50.00 51.00 52.00 53.00 54.00 55.00 60.00 61.00 62.00 68.00 56.00 57.00 54.a 55.00 60.00 61.00 62.00 43.22 60.51 | Wierden |
| Woonspecialist Brabant B.V. | 48.00 48.45 48.43 48.44 48.51 60.41 42.32.a | Mierlo |
| Wormgoor Koudetechniek B.V. | 55.00 60.00 61.00 62.00 68.00 55.00 60.00 61.00 62.00 43.22 46.69 | Goor |
| Wouda Installatietechniek B.V. | 50.00 51.00 52.00 53.00 54.00 55.00 56.00 57.00 60.00 61.00 62.00 68.00 70.00 75.00 78.00 55.00 60.00 61.00 62.00 70.00 43.21 60.51 43.22 81.21 | Dronten |
| Wouter Witzel EuroValve B.V. | 14.00 60.71 14.60 14.61 51.62 51.61 52.61 52.62 52.63 54.50 55.51 55.52 56.51 56.52 60.72 61.60 62.71 62.72 | Losser |
| Wouters Installatietechniek B.V. | 50.00 51.00 52.00 53.00 54.00 55.00 60.00 61.00 62.00 68.00 55.00 60.00 61.00 62.00 43.22 81.21 | Hapert |
| Wouters Klimaattechniek B.V. | 55.00 60.00 61.00 62.00 68.00 55.00 60.00 61.00 62.00 43.22 81.21 | Hapert |