A thermally activated air conditioning system is disclosed that both dries and chills the air being conditioned. Drying is by a liquid desiccant subsystem, and chilling is by an absorption chilling subsystem. A very high COP (1.25) is obtainable owing to the use of reject heat from the absorption subsystem to power the desiccant subsystem. The overall system (or cycle) is powered by relatively low temperature input heat (e.g. 245° F.). That heat can be obtained from flat plate or evacuated tube solar collectors, or other sources. The low driving temperature is made possible by the disclosed integration between the two subcycles.