Are You Looking Combi Boilers? A combi boiler or combination boiler is the most commonly used boiler in India. Combi Boiler is a unique membrane design water wall type boiler which combines the advantages of both water tube & smoke tube steam boilers. A combination type of steam boiler is the one which has the operational characteristics of both smoke tube and water tube steam boiler respectively. Unlike the packaged ... 13.1.2018 ~ Ghaziabad, Uttar Pradesh ~ 2.8 km.