---
product_id: 81887440
title: "Active Aqua AACH50HP Water Chiller for Aquarium, Hydroponics, Bathtub – 0.5 HP, Fast Cooling, 90-172 Gallons, Titanium Evaporator – Fittings Included"
brand: "activeaqua"
price: "A$2772"
currency: AUD
in_stock: true
reviews_count: 6
category: "Activeaqua"
url: https://www.desertcart.com.au/products/81887440-active-aqua-aach50hp-water-chiller-for-aquarium-hydroponics-bathtub-0
store_origin: AU
region: Australia
---

# 4,020 BTU/hr energy efficient Anti-corrosive titanium evaporator 0.5 HP rapid cooling power Active Aqua AACH50HP Water Chiller for Aquarium, Hydroponics, Bathtub – 0.5 HP, Fast Cooling, 90-172 Gallons, Titanium Evaporator – Fittings Included

**Brand:** activeaqua
**Price:** A$2772
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, stay ahead: chill smarter, not harder!

## Quick Answers

- **What is this?** Active Aqua AACH50HP Water Chiller for Aquarium, Hydroponics, Bathtub – 0.5 HP, Fast Cooling, 90-172 Gallons, Titanium Evaporator – Fittings Included by activeaqua
- **How much does it cost?** A$2772 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/81887440-active-aqua-aach50hp-water-chiller-for-aquarium-hydroponics-bathtub-0)

## Best For

- activeaqua enthusiasts

## Why This Product

- Trusted activeaqua brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Durable pure titanium evaporator resists corrosion in fresh & saltwater
- • **Plug & Play Ready:** Compact freestanding design with simple installation—pump sold separately
- • **Powerful & Efficient:** Delivers 4,020 BTU/hr cooling with just 510 watts of power
- • **Precision Chill Control:** Maintain perfect temps for 90-172 gallons with easy digital display
- • **Versatile Compatibility:** Fits hydroponics, aquariums, and cold plunge baths with included fittings

## Overview

The Active Aqua AACH50HP Water Chiller is a robust 0.5 HP cooling solution designed for hydroponics, aquariums, and cold plunge baths. It efficiently cools 90-172 gallon systems using a corrosion-resistant titanium evaporator and delivers 4,020 BTU/hr while consuming only 510 watts. Featuring an intuitive digital display and versatile fittings, it ensures precise temperature control and easy installation for professional-grade aquatic and plant environments.

## Description

Want consistent, perfectly chilled water for your hydroponic system, aquarium, or cold plunge bath? The Active Aqua 1/2 HP Water Chiller (AACH50HP) is the solution for all your cooling needs. Its innovative Boost function cools your nutrient solution or water quickly, ensuring faster results. Whether you're optimizing your hydroponic setup or creating the perfect aquatic environment, Active Aqua Water Chillers provide the rapid cooling power you need. Designed for versatility, this model handles everything and can be used as a hydroponic water chiller, aquaponic water chiller, aquarium chiller, or a cold plunge chiller. It supports setups between 90 to 172 gallons, ensuring precise temperature control for optimal plant growth or aquatic health. With the easy-to-use control system of this water chiller 1/2 hp, you can customize your cooling experience, whether promoting plant growth or enhancing your cold bath therapy. Durability is key with the AACH50HP water chiller for cold plunge baths, featuring an anti-corrosive pure titanium evaporator, suitable for both fresh and saltwater. This cold plunge water chiller includes 0.5-inch and 0.75-inch fittings for easy installation and compatibility with AAPW800, AAPW1000, and AAPC1010 pumps. Rated at 4,020 BTU per hour with 510 watts of power, this cold plunge chiller machine delivers efficient cooling while conserving energy. The pump and hoses are required for operation but not included. Compact yet powerful, this chiller for fish tank measures 21.1 L x 19.3 W x 22.2 H inches and weighs 58 pounds. Keep your plants, fish, or cold therapy at the perfect temperature with the Active Aqua Chiller 1/2HP.

Review: 1/2 HP on a fully insulated DIY 150 G Stock Tank (Florida) - So far so good. I have the 1/2 HP active aqua on a fully insulated 150G Stock tank. (Still waiting on supplies to build and insulate the lid.) The 1/2 HP w the 150G stock tank was widely recommended. Some say the 1/4 HP is fine too. But Sarasota FL Summers peak in the mid/high 90’s and with this build being outdoors, I didn’t want to risk the chiller not keeping up with the heat. So far the chiller is keeping up and maintaining. (Just got it a week ago) I have it set at 60 F and it goes up to 62 F then kicks on to bring it back down. (It is spring time - the high today is 86 F) It is pretty quiet. The only function/feature I wish it had was the option to turn the display off at (Minor detail) A couple things to mention: 1. I do have this in my covered/shaded lanai. 2. It’s spring time in Sarasota FL. 84 F - 88 F 3. Home Depot - LP SmartSide Cedar siding. 4. Home Depot - Foamular NGX insulation sheathing + insulating spray foam. Follow up: May 3rd: Still going strong. Temp is set at 55 F. No problems. June 5th: Still going strong. Temp set at 50 F. No problems. The only thing I’ve noticed is that the chiller sweats/condensates every now and then. But it’s early summer in FL, so this is expected. I’ve also drained this twice to clean it and had no problem getting to temp over night. July 7: Still working great. Chiller set at 48F. No problems. There is a small puddle of condensation from the chiller (Normal). I now have it raised slightly for air flow. Oct 11: Had the chiller off for about a month and powered it back on. Still going strong. Lastly, if you are running this 24/7 (not on boost mode), it will add about $55 dollars a month to your electric bill.
Review: Dead on arrival, no support from desertcart or Manufacturer. - Bought this to use for a cold plunge after doing all the research and settling on this being a trustworthy brand. It sat at my house in the box for the last 2 months while I've been building the rest of the plunge. Finally the day came to hook it up and the results were promising. It cooled the water by 20 degrees in under 30min. But suddenly the unit shut off. After reading the manual and troubleshooting, the cause was that it was overheating and shut off as a safety measure. I checked the back of the unit, as it did seem to be very quiet while it was running, and found the cooling fan to be jammed against the cooling coil, preventing it from functioning. Upon calling desertcart the best they could do was return it with a $200 restocking fee as it was beyond the return window. The manufacturer has yet to respond, as this should be a warranty repair. Overall I'm less than pleased by this product and lack of customer service.

## Features

- Perfect Temp: The chiller has a large refrigeration capacity and is ideal for keeping the nutrient solution in your reservoir at the perfect temperature
- Fresh & Salt Water Compatible: It has an anti-corrosive pure titanium evaporator for handling both fresh and saltwater
- Easy to Read: Each unit also has a user-friendly display that allows you to control your desired temperature range as needed
- Recommendations: Pump and hose sold separately; This model is recommended for use with pump models AAPW800, AAPW1000, or AAPC1010; Rated BTU Per Hour: 4,020
- Specifications: Suitable for 90-172 gallons and has a flow rate of 800-1600 gallons per hour (0.5 HP); Dimensions (L x W x H): 21.1 x 19.3 x 22.2 inches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BHHP4Q2 |
| Best Sellers Rank | #86,942 in Pet Supplies ( See Top 100 in Pet Supplies ) #18 in Aquarium Chillers |
| Brand | ACTIVEAQUA |
| Capacity | 172 Gallons |
| Color | W/Power Boost |
| Customer Reviews | 3.6 3.6 out of 5 stars (121) |
| Global Trade Identification Number | 00638104022989 |
| Installation Type | Freestanding |
| Is Discontinued By Manufacturer | No |
| Item Weight | 56.5 pounds |
| Item model number | AACH50HP |
| Manufacturer | Hydrofarm |
| Material | Anti-corrosive pure titanium evaporator |
| Power Source | Corded Electric |
| Product Dimensions | 19"D x 14"W x 19"H |
| Style | Active Aqua Chiller 1/2 HP |
| UPC | 638104022989 |
| Upper Temperature Rating | 32 Degrees Fahrenheit |
| Wattage | 510 watts |
| Weight | 48.5 Pounds |

## Product Details

- **Brand:** ACTIVEAQUA
- **Capacity:** 172 Gallons
- **Color:** W/Power Boost
- **Material:** Anti-corrosive pure titanium evaporator
- **Product Dimensions:** 19"D x 14"W x 19"H

## Images

![Active Aqua AACH50HP Water Chiller for Aquarium, Hydroponics, Bathtub – 0.5 HP, Fast Cooling, 90-172 Gallons, Titanium Evaporator – Fittings Included - Image 1](https://m.media-amazon.com/images/I/616n60eGU-L.jpg)

## Questions & Answers

**Q: I'm planning a 1200 gph nft system i need to cool the water from 85f to 65f. using a 55usg drum as a resevoir. what size chiller & pump would i need?**
A: I would purchase the one horse power model if it going to be over 100 gallons

**Q: Can I use this to chill my 10ft round by 30 inches above ground pool? It hold about 1500 gallons of water.**
A: No. I use it to cool a 125 gallon fish tank to keep it at 68 degrees and it runs about 1/2 of the time. 
1500 gallons outside is way too much water.

**Q: Yo hydrofarm can I use the 1/2 HP chiller model rated 90-172 gallons on a 50 gallon aquarium to keep water 80 degrees constantly in 100 degree weathe**
A: Yes, just make sure there is adequate air flow/ventilation around the chiller.

**Q: Room temperature is about 75 in summer. I have a 150 gallon tank to keep the water at 40-50 degrees which pump would I need. how much electric amonth?**
A: We recommend using the 1HP model if you require temps that low for the water volume you have. A submersible pump rated between 800-1600gph is recommended.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 1/2 HP on a fully insulated DIY 150 G Stock Tank (Florida)
*by J***N on April 6, 2025*

So far so good. I have the 1/2 HP active aqua on a fully insulated 150G Stock tank. (Still waiting on supplies to build and insulate the lid.) The 1/2 HP w the 150G stock tank was widely recommended. Some say the 1/4 HP is fine too. But Sarasota FL Summers peak in the mid/high 90’s and with this build being outdoors, I didn’t want to risk the chiller not keeping up with the heat. So far the chiller is keeping up and maintaining. (Just got it a week ago) I have it set at 60 F and it goes up to 62 F then kicks on to bring it back down. (It is spring time - the high today is 86 F) It is pretty quiet. The only function/feature I wish it had was the option to turn the display off at (Minor detail) A couple things to mention: 1. I do have this in my covered/shaded lanai. 2. It’s spring time in Sarasota FL. 84 F - 88 F 3. Home Depot - LP SmartSide Cedar siding. 4. Home Depot - Foamular NGX insulation sheathing + insulating spray foam. Follow up: May 3rd: Still going strong. Temp is set at 55 F. No problems. June 5th: Still going strong. Temp set at 50 F. No problems. The only thing I’ve noticed is that the chiller sweats/condensates every now and then. But it’s early summer in FL, so this is expected. I’ve also drained this twice to clean it and had no problem getting to temp over night. July 7: Still working great. Chiller set at 48F. No problems. There is a small puddle of condensation from the chiller (Normal). I now have it raised slightly for air flow. Oct 11: Had the chiller off for about a month and powered it back on. Still going strong. Lastly, if you are running this 24/7 (not on boost mode), it will add about $55 dollars a month to your electric bill.

### ⭐ Dead on arrival, no support from Amazon or Manufacturer.
*by A***D on December 31, 2022*

Bought this to use for a cold plunge after doing all the research and settling on this being a trustworthy brand. It sat at my house in the box for the last 2 months while I've been building the rest of the plunge. Finally the day came to hook it up and the results were promising. It cooled the water by 20 degrees in under 30min. But suddenly the unit shut off. After reading the manual and troubleshooting, the cause was that it was overheating and shut off as a safety measure. I checked the back of the unit, as it did seem to be very quiet while it was running, and found the cooling fan to be jammed against the cooling coil, preventing it from functioning. Upon calling Amazon the best they could do was return it with a $200 restocking fee as it was beyond the return window. The manufacturer has yet to respond, as this should be a warranty repair. Overall I'm less than pleased by this product and lack of customer service.

### ⭐⭐⭐⭐⭐ Quiet, powerful, efficient
*by T***Z on May 2, 2024*

I have been cold plunging for a year now. I wanted to start out cheap. I bought a soft portable plunge, and a cheap Vevor 1/4 hp chiller. IT all worked and I plunged at around 50 degrees, but I wanted colder. I upgraded to the 1/3 hp Vevor for around $360. IT got me down to 39, but it had to run all day to do it. I even super insulated my plunge to help. The Vevor chiller has the volume leve3l of a cheap walmart window AC. This may not bother most people, but we have the Plunge on our lanai, and my wife likes to sit out there and have a cup of tea. She does not like listening to all the noise, so she would often unplug it, and then forget to plug it back in. This lead to several days of running, to get the temp back down. That whole time it was very noisy. Finally I caught the Active Aqua on a great sale. They do this from time to time, so track the price on camelcamelcamel dot com. Its worth it! So I finally get my active aqua, and let it sit for 24 hours. This is important with any products that contain refrigerant. Not doing so, will shorten the lifespan. After letting the Active Aqua aclimate, I got it all set up. It had larger fittings than my previous Vevor. SO I had to adapt my plumbing. I probably should have just upgraded to new larger tubing, but I did not want to jump in to that much work right away. I just wanted to get this thing going. Right out of the gates, I noticed how quiet this chiller is. The down side is that it showed how loud my danner 950 pump is. I actually ended up making a hush box for my danner pump. It helped quiet my entire system, to a very manageable level. I used the foil backed foam and carpet padding to wrap the pump in sort of an envelope. This made my pump so quite! Since it has 39 degree water running through it all the time, when running, I figured it did not need to be air cooled. The next thing I noticed, is that my system does not need to run as often. I use an Inkbird controller set at 39 degrees. When the temp is above 39 degrees the inkbird turns everything on. This ensures my pump, chiller and ozone are running when they need to. If I just relied on the temp gauge in the chiller, it may turn off, but my pump and ozone would continue to run. I don't need 24 hour circulation. The Active Aqua only goes down to 39 degrees. That is my desired set point, so there was some issues with the chiller kicking off, and the inkbird letting things continue to run. So I went in to the active aqua settings and calibrated the AA to think it was a few degrees warmer than actual. This way, if the inkbird is calling for 39 and its at 39.1, the active aqua will show 41, and continue to run until the inkbird temp range is satisfied. You can calibrate up to 5 degrees warmer, which will push you down to 34 actual. For me, after a year of plunging, 39 still provides about 30 seconds of full shock and awe mode. Perhaps Ill eventually need it to be colder, and I have room to grow. At these temps ever single degree makes a big difference. I plunge for around 2 minutes, and at that time my feet hurt. Now, the bottom of my tub may actually be colder, as my tub is pretty deep, and long. It could be much cooler where my feet are. At the end of the day, I love this active aqua chiller. I spent a lot on cheaper chillers trying to figure it out. I was able to sell each, and not lose much money. But had I known I would still be doing this, the AA would have been the way to go up front. The sound level, and the extra power make this chiller the perfect choice for my set up. I have an inflatable tub I bought here on Amazon. Its 59 inches long, and probably close to 40 inches deep, 36 inches of water level. Its around 120 gallons according tot he amazon ad, but it feels like more. I wrapped it in 10 mm foil faced soft foam (also purchased on Amazon). I run the Danner 950 pump, and a spa ozone that I purchased, you guessed it, right here on Amazon. Now I am thinking about upgrading to a larger Danner 1200 pump. The 950 works, but more flow may help the filtration, and also help mix the water as I am plunging. If you're worried about price, buy the cheap Vevor, and try it out. But if, like me, the Vevor is not powerful enough, or its much too noisy, this Active Aqua is the perfect solution. 1/2 hp seems to be the perfect size for around 120 gallons, if you're insulated. I live in south Florida, so it it works here, it should work most anywhere in north America.

## Frequently Bought Together

- ACTIVEAQUA Active Aqua AACH50HP Water Chiller for Aquarium, Hydroponics, Bathtub – 0.5 HP, Fast Cooling, 90-172 Gallons, Titanium Evaporator – Fittings Included
- Active Aqua Hydrofarm 0.75 Inch Inside Diameter Vinyl Tubing for Indoor Vegetation Growing Hydroponic Irrigation Systems and Tanks, 25 Feet, Black
- 3/4" Female NPT in-Line Strainer with 100 mesh Stainless Steel Filter Screen (3/4“ 100 Mesh)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-23*