Case study of the first manufactured home built to the DOE Zero Energy Ready Home standard. This manufactured home achieved a HERS score of 57 without PV. The home has been set up for side-by-side testing with an identical manufactured home built to ENERGY STAR standards and another built to the builder’s standard, which is slightly above HUD code. THE DOE-certified home has R-54.6 blown fiberglass in the ceilings, R-13 unfaced batt in the walls plus R-5 rigid XPS as the exterior sheathing, and an R-28 fiberglass blanket under the floor joists. One mini-split ductless heat pump heats and cools the home with thermostat-controlled in-wall fans to transfer heat to the bedrooms.