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Kaldera Cold Therapy Plunge 80 vs Lumi Therapy Pod MAX Ultra

Kaldera Cold Therapy Plunge 80, inflatable or portable tub
Image: Kaldera Cold Therapy
Lumi Therapy Pod MAX Ultra, inflatable or portable tub
Image: Lumi Therapy

Two cold plunge tubs side by side: Kaldera Cold Therapy Plunge 80 at £69 and Lumi Therapy Pod MAX Ultra at £89. Prices and specifications checked against each maker's page, last on .

Quick answer: Pick the Kaldera Cold Therapy Plunge 80 if it costs £20 less (29% cheaper); pick the Lumi Therapy Pod MAX Ultra if it holds more water (420 L against 80 L), useful if you are tall or want room to move.

Choose the Kaldera Cold Therapy Plunge 80 if

  • it costs £20 less (29% cheaper)

Choose the Lumi Therapy Pod MAX Ultra if

  • it holds more water (420 L against 80 L), useful if you are tall or want room to move
Kaldera Cold Therapy Plunge 80Lumi Therapy Pod MAX Ultra
UK price£69£89
TypeInflatable or portable tubInflatable or portable tub
Capacity80 L420 L
Includes chillerNoNo
MaterialFoldable PVCInflatable, 5-layer insulated PVC with rip-stop polyester outer
InsulationNot stated10 mm
DimensionsNot stated900 dia x 750 h mm
Weight (empty)Not statedNot stated
VoltageNot statedNot stated
FiltrationNot statedNot stated
Outdoor useNot statedYes
App controlNot statedNo
WarrantyNot stated6 months
Tested by usNoNo
Where to buyCheck price at Kaldera Cold TherapyCheck price at Lumi Therapy

Buying facts

Kaldera Cold Therapy Plunge 80Lumi Therapy Pod MAX Ultra
Price per litre of capacity£0.86£0.21
Ice to cool from 15C to 8C, per plunge8 kg41 kg
Brand rating on TrustpilotNo profile found3.8 from 4,978 reviews
Newest Trustpilot reviews we readn/a12 of 15 at 1-2 stars
Amazon UK ratingNot on Amazon UK4.1 from 50 ratings
Where the seller is basedNot statedTorquay, Devon

Trustpilot scores cover the whole brand and its service, not this model alone; we read the newest reviews on each profile at every data run. How we check the data.

Price history

FromKaldera Cold Therapy Plunge 80Lumi Therapy Pod MAX Ultra
Not tracked yet£89

No tracked price has changed since 8 Sept 2026; last checked 5 Oct 2026.

What the numbers say

On price, the Kaldera Cold Therapy Plunge 80 is £20 cheaper than the Lumi Therapy Pod MAX Ultra (£69 against £89 in the UK at the time of writing).

Capacity: Kaldera Cold Therapy Plunge 80 80 L, Lumi Therapy Pod MAX Ultra 420 L (advantage Lumi Therapy Pod MAX Ultra).

We have not tested either unit ourselves, so this comparison is built from the makers' specifications, UK pricing and owner feedback; each product page says the same.

Frequently asked questions

Is the Kaldera Cold Therapy Plunge 80 or the Lumi Therapy Pod MAX Ultra cheaper?

The Kaldera Cold Therapy Plunge 80 is cheaper at £69, £20 less than the Lumi Therapy Pod MAX Ultra at £89, on the UK prices we last checked.

Which holds more water, the Kaldera Cold Therapy Plunge 80 or the Lumi Therapy Pod MAX Ultra?

The Lumi Therapy Pod MAX Ultra: about 420 litres against 80 litres.

Do the Kaldera Cold Therapy Plunge 80 and the Lumi Therapy Pod MAX Ultra come with a chiller?

No. Both are cooled with ice or a separate chiller. Our ice calculator and chiller sizing calculator show what each option needs.

Related comparisons

Read the full pages

Cold water immersion places real stress on the heart and circulation. Anyone with a cardiovascular condition, high blood pressure, a history of arrhythmia, or who is pregnant should speak to a doctor before using a cold plunge. Never plunge alone. Start with short sessions at mild temperatures and progress gradually. Read the full safety guide.

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