The dry steamer apparatus delivers steam and heated air to produce dry steam to treat a surface as a method of eradicating bed bugs or other insect pests, and/or for cleaning purposes. The apparatus provides a vacuum to immediately remove the dry steam, and dead pests and other debris. A treatment substance dispensing assembly may also be provided, to dispense treatment substances onto the surface after steaming and vacuuming. The apparatus may incorporate the vacuum, or may attach to an external vacuum, for example the central vacuum unit of a home. Where the vacuum is part of the apparatus, the vacuum fan may have its exhaust connected to supply air to an assembly to produce the heated air, and if applicable, to the treatment substance dispensing assembly to dispense the treatment substance.
