Swimming Pool Cleaners: Suction, Pressure & Robotic Compared

A clean pool isn't just about looks—it's about health, equipment longevity, and enjoyment. Choosing the right automatic cleaner saves hours of manual labor and keeps water sparkling. Here's how the three main types stack up.

1. Suction-Side Cleaners

How They Work

Connect to a dedicated suction port or skimmer via hose. Pool pump creates suction; cleaner moves in random patterns, vacuuming debris into the pool filter.

Pros

• Lowest cost ($200–$500).
• Simple installation (one hose connection).
• No extra equipment needed.

Cons

• Struggles with large leaves/debris.
• Increases filter load (clean filter more often).
• Random pattern = missed spots.
• Depends on pump flow/suction.

Best For

Small–medium pools, mostly fine debris (sand, silt), budget-conscious owners.

2. Pressure-Side Cleaners

How They Work

Connect to a pressure-side return line. Water pressure propels cleaner; venturi effect creates suction. Debris collects in onboard filter bag. Requires booster pump (separate purchase).

Pros

• Handles large debris (leaves, acorns) well.
• Onboard bag reduces main filter load.
• Distributes filtered water.
• More systematic coverage than suction.

Cons

• Higher cost ($500–$900 + booster pump $300–$500).
• Complex installation (plumbing, electrical for booster).
• More moving parts = more maintenance.

Best For

Medium–large pools, heavy leaf load, owners wanting less filter cleaning.

3. Robotic Cleaners

How They Work

Self-contained: electric motor, pump, filter cartridge, brushes. Plug into GFCI outlet; drop in pool. Programmable cycles, remote control, some with Wi-Fi/app.

Pros

• Best cleaning performance (scrubs walls, waterline, floor).
• Independent of pool plumbing—no pump load.
• Energy efficient (low voltage).
• Programmable, set-and-forget.
• Climbs walls, navigates steps.

Cons

• Highest upfront cost ($800–$1,500+).
• Must be removed/stored after each cycle.
• Cartridge cleaning required.
• Electronics can fail; repair costs.

Best For

Any pool where cleaning performance and convenience are top priorities.

Comparison Summary

Feature	Suction	Pressure	Robotic
Price	$	$$	$$$
Installation	Easy	Complex	Plug & play
Debris Handling	Fine only	Large & fine	All types
Wall Climbing	Rare	Some models	Standard
Filter Load	Increases	Reduces	Zero
Maintenance	Low	Medium	Medium

Decision Guide

• Budget tight, simple needs: Suction.
• Heavy leaves, want filter relief: Pressure.
• Want the cleanest pool with least effort: Robotic.

For detailed specs and current prices, visit Pool Supply For Less.