Industry requires mainly heat above 100 °C, but waste heat is mostly available at temperatures below 100 °C. To close this temperature gap, Adsorption Heat Transformers (AdHTs) are particularly promising and, therefore, recently discussed in the literature. However, an experimental feasibility study of closed AdHTs is currently lacking for temperatures around 100 °C. Therefore, we present an experimental setup for a lab-scale cyclic operating prototype of a closed AdHT in one-bed configuration that uses TiAPSO-34 & H2O as working pair. For the AdHT prototype, we demonstrate that heat transformation from 90 °C to 110 °C is experimentally feasible, while achieving a Coefficient Of Performance (COP) of 0.136 and a Specific Heating Power (SHP) of 32.4 W/kg. Moreover, we identify main challenges of the AdHT cycle that limit the AdHT performance and need to be resolved.