Question 1

How cold does the Active Aqua chiller 1/2 HP get and how quickly?

Accepted Answer

The 1/2 HP can cool water down to 39°F. It cools about 5°F each hour. For a 94-gallon tub, it takes about 7-8 hours to cool from 75°F to 40°F. Most people keep their cold plunge between 45-55°F.

Question 2

Will this work with my tub and what size is recommended?

Accepted Answer

Yes, this chiller is ideal for tubs up to 172 gallons and connects easily to standard plumbing. Just be sure to match the tubing and connectors to your tub’s inlet and outlet size. For example, if your tub has 3/4" ports, use 3/4" tubing and fittings.

Question 3

Does an Active Aqua chiller need a pump and what kind?

Accepted Answer

Yes, you need to buy a separate water pump. Both inline and submersible pumps work. I prefer inline pumps like the Danner 950, but submersible pumps like the Hydrofarm 1110 also work.

Question 4

What's the noise level and cost to run?

Accepted Answer

The chiller is very quiet - you can talk normally next to it. It costs about $20-25 extra on your monthly power bill with daily use. It uses little electricity (2.2 amps) and turns on and off by itself as needed.

Question 5

How should I clean and maintain it?

Accepted Answer

Every two weeks: Clean the strainer and add sanitizer (use food-grade hydrogen peroxide, not chlorine). Every month check for leaks. Every three months clean the air vents and run a cleaning solution through the system.

Question 6

Can I leave it outside year-round?

Accepted Answer

Yes, except when it freezes. The chiller handles rain and heat just fine, but you should bring it inside when temperatures drop below freezing.

Question 7

Does it come with a warranty?

Accepted Answer

Yes, the Active Aqua chiller 1/2 HP comes with a 1-year warranty. It covers defects in materials and workmanship with normal use.

Question 8

How does this compare to commercial cold plunges?

Accepted Answer

This is the same unit used in some popular commercial systems that cost $4,000-$10,000. A complete DIY setup with this chiller costs under $2,900.

cold plunge

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Bennett Carby

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