The DOFF Power Unit or DPU is an innovative new product from Stonehealth designed specifically for use when mains electricity is not available.

The DPU is a unique solution which will work with any Stonehealth DOFF hotbox past, present or future! This unit replaces your existing electric pump. The DPU consists of a completely bespoke unit with a modern, electric start, self-charging, air-cooled diesel engine which belt drives the high-pressure pump and also a 1.2kw alternator with 110 or 230V 50Hz output and overload cut-outs, more than sufficient to run the DOFF hotbox.

With DPU you no longer require a bulky generator to run “off grid” and as long as you can supply water (only 5 litres/ min for a DOFF) you can realistically run from the back of a van for an hour on a 250-litre plastic tank. The DPU is completely self-contained with its own diesel tank and sits in a purpose-built tubular trolley with its own wheels for easy manoeuvring.