Thermax make combloc boiler the best of two worlds combining hybrid and integral furnace boiler technologies thermax combloc blends the best of two different boiler technologies, To offer a configuration which combines all the perks of hybrid boilers like together with, Fuel flexibility the inherent ruggedness and compactness of integral furnace boilers. How combloc scores over the hybrid boiler. .. As much as 90% reduction in refractory. Up to 40% reduction in footprint. Up to 80% reduction in site work. Flexibility to burn a wide variety of solid fuels, Fossil and biomass. Refractory baffle wall ensures higher residence time for fuel to burn, Thus higher thermal efficiency. Higher fuel flexibility. High circulation ratio and optimum water hold up enables quick start up time. Factory assembled and insulated.