Abstract: A recreational vehicle winterizing device adapted for use in association with a recreational vehicle including a water supply system with a plurality of interconnected rigid pipes, the apparatus comprising: a canister formed in a hollow cylindrical configuration with an upper surface including an aperture, a cylindrical neck with screw threads being positioned around the aperture, antifreeze fluid being positioned within the canister, a tube being positioned through the upper surface and extending within the canister, the tube including a valve to enable the user to regulate the flow of antifreeze therethrough; and a pump assembly including a handle, a cylindrical member and a collar with screw threads, the collar threadedly coupling the cylindrical member through the neck of the canister, the handle having an upper extent including a gripping ring and a lower extent including a rod slidably positioned through the cylindrical member, a user gripping the handle and forcing the rod upward and downward thereby c