Paul Jones says
This is a static tandem air compressor setup, aimed at workshops that need more air capacity from a single‑phase supply. With two 3 hp pumps on a 250 litre receiver, it suits bodyshops running multiple air tools, spray guns, and general workshop equipment where duty cycle is fairly high through the day.
In practice, it needs a correctly rated electrical supply, typically a dedicated 30 amp circuit, and proper siting with good ventilation and access for servicing. Air line sizing and filtration matter; if you’re feeding spray equipment, you’ll want decent water separation and regulation downstream, as tandem units generate a fair amount of heat and moisture.
One common issue I see is compressors being undersized or wired into marginal supplies, leading to nuisance tripping and slow recovery. Another is receivers never being drained, which shortens life and contaminates air systems.
Set up properly, a tandem 3 hp 250 litre unit is a reliable workhorse, giving consistent air delivery and good efficiency for small to medium professional bodyshops without stepping up to three‑phase power.
Paul Jones, Technical Director, BWS Ltd
Paul Jones, Technical Director