Head to head
Bosch Professional GSB 18V-90 C vs Karcher HDS 5/11 U
The Bosch Professional GSB 18V-90 C is a 18v brushless combi drill/driver with bluetooth connectivity. The Karcher HDS 5/11 U is a professional hot water pressure washer, upright class.
Last reviewed 13 September 2026
Specifications side by side
| Bosch Professional GSB 18V-90 C | Karcher HDS 5/11 U | |
|---|---|---|
| Weight | 1.2 kg (excl. battery) | 65.4 kg (with accessories) |
| Max torque | 65 / 36 Nm (hard/soft) | - |
| Chuck | 13mm metal | - |
| No-load speed | 0-630 / 0-2100 rpm | - |
| Impact rate | 29,500 bpm | - |
| Max pressure | - | 110 bar |
| Flow rate | - | 450 l/h |
| Max water temperature | - | 80 C |
| Motor power | - | 2.2 kW |
Sources: Bosch Professional GSB 18V-90 C, Karcher HDS 5/11 U. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GSB 18V-90 C if...
This combi drill sits in Bosch Professional's Biturbo 18V range for builders who want connected tool tracking alongside solid drilling performance. It is a common counterpart to the corded GBH 2-28 F for buyers moving their kit over to battery power.
Full GSB 18V-90 C specifications →Buy or hire the HDS 5/11 U if...
The HDS 5/11 U is an entry point into Karcher's hot-water professional range, used by cleaning contractors and agricultural or workshop users needing hot water for grease and oil removal. It is a common unit on trade cleaning equipment hire fleets rather than a domestic purchase.
Full HDS 5/11 U specifications →Common questions
What is the difference between the Bosch Professional GSB 18V-90 C and the Karcher HDS 5/11 U?
The Bosch Professional GSB 18V-90 C is a 18V brushless combi drill/driver with Bluetooth connectivity; the Karcher HDS 5/11 U is a professional hot water pressure washer, upright class.
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