DIY Air Conditioner Sleeve Installation

Pull the front cover off the unit and set it aside.

Insert a screwdriver into the screws on the side of the cabinet or sleeve and unscrew them. Set them aside for later use.

Pull the lower lip of the air conditioner unit from inside the metal sleeve and pull the unit toward you. Pull the unit out of the sleeve completely and set it aside.

Open the window into which you wish to install the unit, and set the sleeve on the sill with the front of the sleeve facing inside. Settle the sleeve's bottom guard rail on the outside of the sill. Close the open window down into the top guard rail, until the sleeve sits fixed in the window frame.

Lower a V-support bracket down through the bottom of the sleeve and butt the flat side up against one side of the unit's bottom. Insert the supplied bolts through the holes on the inside bottom of the unit and through the holes of the flat side of the V-support bracket. Screw the supplied nuts onto the bolts of the support bracket. Screw bolts through the bracket point holes or lowest spots of the brackets into the outside wall. Repeat this step for the other side of the sleeve.

Place an L-bracket on the topside of the open window. Butt one side up against the window frame and the other flat against the top of the open window. Screw a starter hole through the L-bracket and into the window frame. Put a screw through the L-bracket and screw it into the wall. Repeat this step for the other side of the window. This prevents the window from being opened.

Pick up the air conditioner unit and insert it into the secured sleeve. Replace the front cover onto the front of the unit. Insert the sleeve screws back into the sleeve and screw them in.