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Alternatives to Sichler PR-330

10 window-cleaning robots at a similar price that compete with the PR-330 — what each does better, what it gives up and how the price compares.

Alternatives to the PR-330

Kärcher RCW 4
2
Kärcher · 2026RCW 4
8.0
Same price ≈ US$230
  • Suction power 5,000 Pa vs 2,800 Pa
  • Water tank (robot) 150 ml vs 50 ml
Kärcher RCW 4 Extra+
3
Kärcher · 2026RCW 4 Extra+
8.0
4% cheaper ≈ US$220
  • Suction power 5,000 Pa vs 2,800 Pa
  • Water tank (robot) 150 ml vs 50 ml
Welltec Probot RX3 Pro
4
Welltec · 2025Probot RX3 Pro
4.6
4% pricier ≈ US$240
  • Suction power 4,000 Pa vs 2,800 Pa
  • Window area per session 24 m² vs 50 m²
Kärcher RCW 4 Extra
6
Kärcher · 2026RCW 4 Extra
7.5
4% pricier ≈ US$240
  • Suction power 5,000 Pa vs 2,800 Pa
  • Water tank (robot) 150 ml vs 50 ml
  • Noise level 77 dB vs 63 dB
Lazurec A9 Pro
8
Lazurec · 2025A9 Pro
3.7
17% pricier ≈ US$270
  • Water tank (robot) 60 ml vs 50 ml
  • Suction power 2,500 Pa vs 2,800 Pa
  • Noise level 70 dB vs 63 dB
Kärcher RCW 2 Extra+
10
Kärcher · 2026RCW 2 Extra+
7.0
13% cheaper ≈ US$200
  • Suction power 5,000 Pa vs 2,800 Pa
  • Water tank (robot) 70 ml vs 50 ml
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