The DC03 was a lightweight, low profile upright cleaner. It resembled a twin-cylinder version of the DC01, contained one normal cylinder and a second which contained a pair of HEPA filters. While its suction power was much lower than any of the currently available uprights, its heavy-duty filtration system allowed it to survive for many years after the rest of the original Cyclone cleaners were discontinued.
Dyson DC03 Information
Filters are quite expensive to replace and block quite readily. Washable filters introduced late on did help a little. The DC03 weighs 6.8 kilos, which is lighter than a DC04 or DC07 (which are both over 8 kilos) but still heavier than the tiny DC24 Ball which weighs in at 5.4 kilos.
The DC03 had a smaller motor than most other upright Dysons, and produced only 90 Air Watts of suction against the 230-300 generated by its later cousins. The modest two litre bin capacity coupled with the lower suction means it tends to be older people without heavy duty vacuuming needs who have them today.
The DC03 does have several advantages though. It is a slimline model; it doesn't take up much space. Also, when reclined, it can go absolutely flat making vacuuming under beds and furniture much easier. However, it's pièce de résistance is that it can be stored, in it's reclined "flat" position, upside down on the back of a door hung on two hooks. How cool is that? Why has nobody done that since?
We have no DC03 guides on this version of Dyson Medic, but on our blog, we have a comprehensive switch removal and cable replacement guide you can find here: DC03 Cable and Switch Replacement. The Dyson forums also has a room devoted to the Dyson DC03 where you can read and ask advice. You can find that here: Dyson DC03 Advice.