Requirements:

• Single Phase
• Able to run Air Tools ie Vent cutter (Air: 6.2 bar, max. 8 bar) and snips.
• Able to pump up tyres and blow dust out of things.
• Quiet as possible
• Meets current safety standards.

First option:

$849 https://sydneytools.com.au/chicago-hush50-h-aluminium-silenced-50l-air-compressor-with-6m-puma-hose

Reasons:

• Quiet – no need for employee ear/noise protection.
• Won’t Rust
• Backup Motor, ability to simply switch from one motor to the other if something goes wrong.
• Due to expense, will need to be secured to building.

Will look out for second hand unit or one on special.

Very Cheap alternative:

$360 https://www.tradetools.com/product-range/air-compressors/air-compressors/origin-air-compressor-oil-free-fad-135lpm-2-x-750w-motors

Might be worth it for the first year until I can afford the additional quality. However I have found that unless the equipment is not made in China or India, they fail very quick.