Pool Components

How does a swimming pool system work? Guides on filter pumps, sand filters, pool covers and heating for residential pool owners in the Netherlands and Europe.

Below you will find all articles about the technical components of your swimming pool. They are arranged in the order water flows through the system: from the point where water leaves the pool to where it returns clean.

Overview: follow the water through your pool

  1. How does a pool work? The complete system : beginner’s guide and overview of all systems
  2. Pool skimmer: drawing in surface water : operation, types and placement
  3. Main drain: circulation from the bottom : function, safety and installation
  4. Filter pump: the heart of circulation : technical operation and sizing
  5. Sand filter: filtering debris from the water : multiport valve, filter media and pressure
  6. Return jets: clean water back into the pool : alignment and circulation pattern
  7. Heat pump: warming the pool : COP, sizing and placement
  8. Saltwater chlorinator: automatic disinfection : electrolysis, maintenance and myths
  9. Pool plumbing and hydraulics : PVC diameters, bypasses and resistance
  10. Pool vacuum: cleaning floor and walls : manual, automatic and robotic

Buying guides and comparisons

How to Choose a Pool Cover: Solar, Winter or Safety Cover?
Beginner Apr 23, 2026 8 min

How to Choose a Pool Cover: Solar, Winter or Safety Cover?

Pool cover buying guide: compare solar covers, winter tarps and safety covers on heat retention, cost and ease of use for residential pools.

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Pool filter pump: how does a circulation pump work technically?
Intermediate Mar 22, 2026 15 min

Pool filter pump: how does a circulation pump work technically?

The filter pump is the heart of your pool. Learn how the impeller, volute and motor work together, the difference between self-priming and flooded suction, and how to calculate the right pump size in m3/hr.

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Automatic pH and Chlorine Control for Pools: What Pool Owners Need to Know
Expert Apr 11, 2026 10 min

Automatic pH and Chlorine Control for Pools: What Pool Owners Need to Know

Automatic pH and chlorine control for pools: how sensors and dosing pumps work, safety features, remote access, and what the complete system costs.

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Salt Electrolysis Pool: Complete Guide to Saltwater Treatment
Expert Apr 11, 2026 9 min

Salt Electrolysis Pool: Complete Guide to Saltwater Treatment

Salt electrolysis pool: how the cell works, what salt level you need, pH effects, maintenance, and cost comparison with chlorine tablets.

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Choosing a pool filter pump: which flow rate do you need?
Intermediate Apr 9, 2026 9 min

Choosing a pool filter pump: which flow rate do you need?

Pool filter pump buying guide: size your pump for a full turnover in 6 to 8 hours. 30,000-litre pool needs 4 m3/h. Variable speed pumps cut energy costs by up to 80%.

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Pool Liner Guide: Choosing, Replacing and Maintaining Your Liner
Beginner Apr 8, 2026 6 min

Pool Liner Guide: Choosing, Replacing and Maintaining Your Liner

Everything about pool liners: which type fits your pool, what thickness you need, how long a liner lasts and what replacement costs to expect.

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Pool Pump Guide: Choosing, Installing and Maintaining Your Pump
Beginner Apr 8, 2026 7 min

Pool Pump Guide: Choosing, Installing and Maintaining Your Pump

Everything you need to know about pool pumps: which type fits your setup, how to connect it, what pipe sizes to use and how to keep it running well.

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Pool Tiles: Choosing, Installing and Maintaining Tiles For Your Pool
Beginner Apr 8, 2026 7 min

Pool Tiles: Choosing, Installing and Maintaining Tiles For Your Pool

Which tiles work in and around a swimming pool? A guide to materials, slip resistance ratings, frost resistance, costs and maintenance advice.

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How to heat a pool: heat pump, solar, or wood heater?
Beginner Apr 2, 2026 7 min

How to heat a pool: heat pump, solar, or wood heater?

Pool heating options compared: heat pump (COP 5), solar mats, wood-fired heater, and electric resistance. Running costs, heating speed, and which suits your pool.

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Pool enclosure: types, costs, and benefits
Beginner Apr 2, 2026 6 min

Pool enclosure: types, costs, and benefits

Buying a pool enclosure? Compare low telescopic (€2,000) to high walk-in enclosures (€25,000+). Prices, materials, permit requirements, and season extension explained.

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Pool skimmer: how it works and which type to choose
Beginner Mar 22, 2026 9 min

Pool skimmer: how it works and which type to choose

A pool skimmer draws in surface water and captures floating debris before it sinks. Learn how a skimmer works, its parts (basket, weir, mouth), and the difference between built-in and hang-on skimmers.

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Sand filter vs cartridge filter: which is right for your pool?
Feb 20, 2026 6 min

Sand filter vs cartridge filter: which is right for your pool?

Sand filter or cartridge filter? For pools over 20,000 litres a sand filter wins on long-term cost. Compare filtration quality, maintenance and 5-year running costs.

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Pool main drain: function, safety and circulation
Beginner Mar 22, 2026 7 min

Pool main drain: function, safety and circulation

The main drain draws water from the deepest point of your pool for full circulation. How it works, why dual drains are safer, and what to do without one.

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How does a pool sand filter work? Technology, multiport valve and filter media
Intermediate Mar 22, 2026 9 min

How does a pool sand filter work? Technology, multiport valve and filter media

A sand filter traps debris in a layer of quartz sand or glass media as water flows top-to-bottom through a pressure vessel. Learn how the multiport valve works, when to backwash, and which filter medium performs best.

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Pool heat pump: how it works, COP, inverter vs on/off, and sizing
Intermediate Mar 22, 2026 9 min

Pool heat pump: how it works, COP, inverter vs on/off, and sizing

A pool heat pump extracts warmth from outdoor air and transfers it to pool water through a refrigerant cycle. Learn how COP works, the difference between inverter and on/off models, and how to size one for your climate.

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Pool Plumbing Explained: PVC Diameters, Gluing and Basic Hydraulics
Intermediate Mar 22, 2026 8 min

Pool Plumbing Explained: PVC Diameters, Gluing and Basic Hydraulics

Pool plumbing connects your pump, filter, heater and return jets. Learn which PVC diameter to use, how to glue versus thread connections, and how to calculate system resistance.

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Pool return jets: function, setup, and optimal circulation
Beginner Mar 22, 2026 7 min

Pool return jets: function, setup, and optimal circulation

Return jets send filtered water back into your pool and determine circulation patterns. Learn how many you need, how to aim them for maximum flow, and how to eliminate dead zones.

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Pool Vacuum Explained: Manual, Automatic or Robotic? How to Choose
Beginner Mar 22, 2026 8 min

Pool Vacuum Explained: Manual, Automatic or Robotic? How to Choose

A pool vacuum removes dirt from the floor and walls of your pool. Discover the difference between manual vacuums, suction cleaners and robotic pool cleaners, and pick the right type for your pool.

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Saltwater Chlorinator: How Electrolysis Works and What It Means for Your Pool
Intermediate Mar 22, 2026 7 min

Saltwater Chlorinator: How Electrolysis Works and What It Means for Your Pool

A saltwater chlorinator produces chlorine from dissolved salt through electrolysis. Learn how the system works, the required salt level, pros and cons, and how to maintain the cell.

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How does a swimming pool work? The complete system from A to Z
Beginner Feb 17, 2026 8 min

How does a swimming pool work? The complete system from A to Z

A pool works as a closed loop: skimmer and main drain draw water in, the pump pushes it through the filter, and return jets send it back clean. Here is how every component works together.

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