a dehumidifier system comprising : a dehumidifying chamber into which moist air is introduced and from which less moist air is removed after dehumidification ; a desiccant solution situated in at least one reservoir ; a first conduit via which desiccant solution is transferred from the at least one reservoir to the dehumidifying chamber , said solution being returned to said at least one reservoir after absorbing moisture from the moist air ; a regenerator which receives desiccant solution from said at least one reservoir and removes moisture from it ; a second conduit via which desiccant is transferred from the at least one reservoir to the regenerator , said solution being returned to said at least one reservoir after moisture is removed from it ; and a heat pump that transfers heat from the solution in the first conduit to the solution in the second conduit .