Check out Air Conditioner Low-poly 3D model on CGTrader for $7. High-quality mesh by crop3dbusiness: 5596 polys, 2814 vertices.
BLEND (Blender, filesize: 1.52 MB), OBJ (OBJ, filesize: 5.23 MB), FBX (Autodesk FBX, filesize: 1.68 MB), MAX (Autodesk 3ds Max, filesize: 7.54 MB), GLTF (glTF, filesize: 225 KB), STL (Stereolithography, filesize: 3.69 MB)