I'm not sure if you are like me and leave your air compressor on after you used it, but this is a simple way to have it on a timer to only have power when you need to use it. This is a fairly simple modification to an existing setup and can be easily added if you are installing a air compressor. This doesn't replace the pressure switch so your air compressor will cycle as usual but only when the timer provides power. Since this uses a high amp relay to do the heavy lifting, you don't need to be concerned about the rating on the timer switch. It is only powering the coil of the relay which draws very little current.

In this video and in my situation, I don't have a neutral wire but I describe how to wire this if you did, or if you wanted to use a 110v circuit to handle the control part.

Parts Used:
- 4-Hour No Neutral Wire Countdown Timer Switch - https://amzn.to/3ZX0w51
- Siemens 3TX7130-0DF13 120V coil relay - https://amzn.to/3j5ALPj
- Junction Box - https://www.homedepot.com/p/Carlon-6-...

Note: I am not an electrician. If you are not comfortable with electricity, do not attempt this on your own. This may not pass code either the way it's wired. Use at your own desegregation.