Sizing an RC snubber
You may want to consider using an NTC inrush limiter in series with the compressor instead of a snubber. Make sure you choose one well-sized for the steady-state current of the appliance. 

You may also wish to try putting an appropriately-sized metal-oxide varistor across the mains to clamp any badness generated by the compressor.

A safety-recognized X-capacitor across the mains may also help suppress noise. 

There are also off-the-shelf EMI filters that could help with the noise if you prefer a pre-fab solution. I would guess that the motors in a washing machine wouldn't be so different from those in a fridge from an EMI standpoint.