Let me tell you about my experience installing these Air Jade mounting bases under my 24,000 BTU mini split condenser. The rubber pads definitely live up to their vibration-dampening claims - my unit runs noticeably quieter now compared to when it sat directly on concrete.

The installation was mostly straightforward, though I ran into the same leveling issue mentioned in some reviews. The built-in bubble levels are basically useless - mine showed level when the surface was clearly tilted. Keep a real level handy during installation!

Where these really shine is their stability. Even during heavy compressor cycles, there's zero wobble or movement. The rubber does an excellent job absorbing vibrations that used to travel through my patio.

One surprise benefit? They actually look pretty decent! The black rubber gives a clean, finished appearance under the unit rather than just having it sit on bare concrete or pavers.

The included hardware feels sturdy enough, though I did replace the washers with slightly thicker ones for peace of mind. At this price point, I expected better quality control on those bubble levels, but the core functionality is excellent.