Swimming Pool Kits Direct Blog

Can You Add a Swim Jet to an Existing Pool? Portable vs Built-In Explained

Written by Colm Walsh | Nov 13, 2026, 2:20:25 AM

Quick answer: Yes, in most cases. Built-in swim jets are hard to add later because they're fitted into the pool wall and plumbed back to their own pump. Portable, battery-powered swim jets work differently: they clamp onto the pool edge, so you can add one to most existing inground and above-ground pools with no drilling, no plumbing and no electrician.

Key takeaways

  • Built-in jets are a design-stage decision. Retrofitting one means cutting into the shell, new plumbing and a dedicated power supply.
  • Portable jets skip all of that. The jet clamps onto the edge and runs from a rechargeable battery box on the pool surround.
  • Shorter pools gain the most. A swim jet turns a 4 to 8m pool into an endless lane, because you swim in place.
  • It's not just for training. The same jet makes a river ride for the kids and a gentle current for aqua jogging and recovery.
  • Check your pool edge and wall. A vertical pool wall and a solid edge to clamp onto work best.

Why are built-in swim jets hard to add to an existing pool?

A traditional swim jet is flush-mounted. It needs an opening and fittings in the shell wall, plumbing back to its own pump, and a power supply wired by a licensed electrician. In a finished pool that usually means cutting into the shell and lifting paving. That's why we recommend planning a built-in jet at the design stage, as we covered in Swim Jet or Lap Pool?

How does a portable swim jet work?

A portable swim jet has two parts: a jet unit that sits in the water and clamps onto the pool edge, and a battery power box that sits on the pool surround. You charge the battery, connect the two, lower the jet in and choose your speed, either on the unit or from an app. When you're done, it lifts out and stores away.

You get the same idea as a built-in jet, a steady current you swim against, without any construction.

Built-in vs portable swim jet: what's the difference?

  Built-in swim jet Portable swim jet
Installation Fitted into the shell wall Clamps onto the pool edge
Trades Plumber and licensed electrician None
Power Dedicated mains supply Rechargeable battery
Runtime Unlimited Hours per charge, depending on model and speed
Storage Stays in the pool Lifts out and stores in the shed
Best for New builds planned around daily training Existing pools, families, flexible use

Which pools suit a portable swim jet?

Most inground and above-ground fibreglass pools, including compact plunge pools. A vertical wall and a solid edge to clamp onto work best, and you'll want enough depth for the jet to sit fully under water. Inflatable pools aren't suitable.

The pools that gain the most are the shorter ones. In a 4 to 8m pool you can't really swim laps, but with a current to swim against, length stops mattering. If you're still choosing a pool, see what size pool should you get.

iGarden Swim Jet X5 vs X PRO 10: which one?

We've partnered with iGarden to add their X Series portable swim jets to the SPKD range. Here's how the two models compare (manufacturer figures):

  Swim Jet X5 Swim Jet X PRO 10
Max flow 880 GPM (200 m³/h) 1,100 GPM (250 m³/h)
Swim pace 0.5 to 1.0 m/s Up to 1.2 m/s
Runtime Up to 5 hours Up to 10 hours
Best for Families, technique, steady swimming Strong swimmers, training, all-day family use
Warranty 2 years 2 years

Runtime depends on the speed you use. Higher speeds use the battery faster.

What can you do with a swim jet?

  • Swim laps without the length. Swim against the current and never reach the wall.
  • Turn the pool into a water park. Higher speeds make a river ride the kids won't get out of.
  • Aqua jog and recover. A gentle current adds resistance for low-impact training.
  • Learn to swim with support. A slow current helps beginners work on their kick and stroke.

Is a portable swim jet safe?

The iGarden X Series runs at low voltage, with auto shut-off and a protective grille over the jet. Charge the power box away from the pool, never while the jet is running, and follow the manufacturer's safety instructions. As with any pool, supervise kids in and around the water.

Will a swim jet affect my pool chemistry or equipment?

No. A portable jet moves the water that's already in your pool and runs separately from your pump and filter. Keep your usual water care going, especially in summer when the pool gets heavy use. Our guide to what pool maintenance really costs covers the basics.

Frequently asked questions

  • Can I add a swim jet to my existing pool?

    Yes. A portable, battery-powered swim jet clamps onto the pool edge, so it suits most existing inground and above-ground pools without any construction.

  • Do I need a plumber or electrician for a portable swim jet?

    No. It runs from a rechargeable battery and clamps onto the edge. There's no drilling or plumbing.

  • How long does the battery last?

    Up to 5 hours on the iGarden X5 and up to 10 hours on the X PRO 10, depending on the speed you use.

  • Is a swim jet worth it in a small pool?

    Small pools benefit the most. With a current to swim against, a 4 to 8m pool gives you continuous swimming without turns.

  • Should I still choose a built-in jet for a new pool?

    If you'll train daily and want unlimited runtime, a built-in jet planned at the design stage is worth considering. If you want flexibility or already have a pool, a portable jet is simpler.