GRAT 1.5HP Cold Plunge Chiller

Last updated: November 2, 2026

GRAT 1.5HP Cold Plunge Chiller
3.6/5#4 of 12 in over 1/2 HP plunge chillers
3.6

The cheapest way here to a big cooling number, for large tubs in warm places.

  • 1 1/2 HPSize
  • 10,500 Btu/hCooling
  • 36 °FColdest
Check price at Amazon$799

Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • 10,500 Btu of cooling for under $800
  • Gets down to 36 F
  • App control and timers
Cons
  • No ozone or UV
  • One-year warranty
  • Few details on the filter and pump

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Model numberGTMF-B30Y
Cooling
Compressor1 1/2 HP
Cooling capacity10,500 Btu/h
Lowest temperature36 °F
Water and build
FilterYes
App or wifiYes
Warranty1 year

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