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Cordless hot tub vacuum: depth, reach and which stick

Updated: 21.10.2026

You are lifting grit off a hot-tub floor, and the vacuum to hand is a 278 cm pool pole that will not turn in the cabinet. A cordless hot tub vacuum has to be short enough to aim and deep enough to keep running. The VIVOHOME in the [pool cleaner comparison](/hub/pool-care/pool-cleaner) is the wrong first buy for a four-seat spa. The sticks here are the PoolyPoly 1822, the 1814, the 1818 and the Hydro Haus HHRSV. Ranking is on the [best cordless pool vacuum](/hub/pool-care/pool-cleaner/sub/pool-cleaner-best) page. A qualifying purchase can earn a commission at no extra cost to you.

You are lifting grit off a hot-tub floor, and the vacuum to hand is a 278 cm pool pole that will not turn in the cabinet. A cordless hot tub vacuum has to be short enough to aim and deep enough to keep running.

Our top picks

PoolyPoly PoolyPoly 1818

Best overall

PoolyPoly PoolyPoly 1818
8.0/10about £59.99
View offer
PoolyPoly PoolyPoly 1822

Alternative

PoolyPoly PoolyPoly 1822
7.4/10about £56.99
View offer
Hydro Haus Hydro Haus HHRSV

Alternative

Hydro Haus Hydro Haus HHRSV
5.4/10about £74.99
View offer
On this page
  1. 1.A hot tub is not a small version of a wide pool
  2. 2.The head has to be under water
  3. 3.The sticks in this set
  4. 4.When you still want the long pole or no robot
  5. 5.Plug, hose and chemicals

A hot tub is not a small version of a wide pool

A wide pool needs a pole to the middle. VIVOHOME lists 90–278 cm, and in a spa that pole hits the cover bar. The 1814 is about 165 cm. The 1822 is also stated as 168 cm. Hydro Haus is 105–164 cm. The 1818 handle runs from 66 to 141 cm, and the body can be used alone in shallow water. A rechargeable spa vacuum sold elsewhere at £59.99 is a price neighbour, not one of these rows. Start with one of the four sticks.

The head has to be under water

These sticks do not vacuum a damp seat. PoolyPoly prints 30 cm and tells you to submerge the outlet on the 1814 and 1822. A sensor starts under water and stops when you lift the head. A seat under a film of water is a wipe. Hydro Haus states no minimum. One UK reviewer needed about 40 cm and got nothing from a shallower feature. Quote 30 cm as the PoolyPoly figure. Treat 40 cm as one buyer's result, not a second official minimum. Small is not the same as deep enough. Once the water covers the head, charge and bag order are on the how to use a cordless pool vacuum page.
PoolyPoly PoolyPoly 1818

Testsieger

PoolyPoly PoolyPoly 1818
8.0/10about £59.99
View offer

The sticks in this set

The 1822 at about £56.99 is the lowest sticker: the 30 cm line, and 4.2 from 129. UK comments match the 1814. The colour field says White and a highlight says orange. The 1814 at about £59.99 shares those comments, and one field says robotic on a handheld. The 1818 at about £59.99 has its own file of 4.2 from 303. Fine dirt falls back without the sleeve. It is the best value when you want other owners' words. Hydro Haus at about £74.99 names a 200 micron cup and is 3.7 from 10. A charger is not listed. Take it when the mesh number matters more than the sample.

When you still want the long pole or no robot

Keep the VIVOHOME when one tool must also cover a wide pool. The saltwater exclusion still applies. A long pole in a four-seat cabinet is the skip. A robot is the wrong tool for seats. POOLPURE is a flat floor up to 90 m², at about £139.00 or about £149.00. That comparison is the robot or handheld page. The FAMINESS hose set at about £25.99 is a poor fit in warm spa water. The line is 2.4 from 40, and WaterSafe says not to leave a hosepipe submerged.

Plug, hose and chemicals

None of the four sticks states a BS 1363 plug. Regulation 35 expects a UK plug, or a conversion plug with a BS 1362 fuse. Check the pins and charge with a dry port. A vacuum does not dose bromine or chlorine, and it does not replace the tub cartridge. A fault in the first 30 days is the short-term right to reject in section 22 of the Consumer Rights Act 2015. A failure at six weeks is already outside that window. For a typical UK hot tub, start with the 1818 for the review file, or the 1822 for about £56.99 and a printed 30 cm line.

Common questions

Can you use a pool vacuum in a hot tub?
Yes, if it is a short cordless stick and the water covers the head. A 278 cm VIVOHOME is clumsy in a cabinet. A hose jet is a poor fit because the hose should not sit in the tub.
How deep does the water need to be?
PoolyPoly prints 30 cm. Hydro Haus prints no minimum, and one UK reviewer needed about 40 cm. Shallower than the figure for your model, the sensor will not clean. A damp seat is a wipe, not a pass.
Is 165 cm enough?
For a hot tub, about 165 cm on the 1814 or 1822 is enough and still aimable. The 1818 stops at 141 cm, often easier in a small tub. The seller already says those short sticks are not for big pools.
Which stick has more than a handful of UK reviews?
The 1818, at 4.2 from 303, on its own file. The 1814 and 1822 share comments behind 4.2 from 128 and 129, so do not add them. Hydro Haus is 3.7 from 10.
Does it start itself?
The 1814 and 1822 say a sensor starts them under water and stops them when lifted, from 30 cm. Hydro Haus's bullets say no buttons. One UK buyer still found no switch in the leaflets. Read the sheet in your box.
Is a robot useful in a hot tub?
No. POOLPURE robots are for a flat floor up to 90 m², not moulded seats, and they exclude wrinkles. Use a short stick you can point.
What about the charger plug?
The files do not state a UK plug. Regulation 35 expects BS 1363, or a conversion plug with a BS 1362 fuse. Hydro Haus does not even confirm a charger is in the box.

Related pages

Pool cleaner buying guide

Pool cleaner

Best cordless pool vacuum: who it suits, who to skip

How to use a cordless pool vacuum without stirring silt

Robot pool cleaner vs handheld: flat floor or pole

Sources

Public UK sources for plugs, backflow, CE marking and the 30-day right to reject, taken from the research digest. Listing prices, stars and review counts are from amazon.co.uk on 19 October 2026.

  1. Electrical Equipment (Safety) Regulations 2016, regulation 35 (retrieved 19 October 2026)
  2. GOV.UK — Electrical Equipment (Safety) Regulations 2016, Great Britain (retrieved 19 October 2026)
  3. GOV.UK — Product regulations and UKCA and CE marking (retrieved 19 October 2026)
  4. Water Supply (Water Fittings) Regulations 1999 (retrieved 19 October 2026)
  5. WaterSafe — Hosepipe backflow (retrieved 19 October 2026)
  6. Consumer Rights Act 2015, section 22 (retrieved 19 October 2026)
  7. ABB — Applying IP ratings, including IPX8 (retrieved 19 October 2026)
  8. amazon.co.uk listings for the nine pool cleaners in this comparison (retrieved 19 October 2026)