Active Aqua 0.5 HP Water Chiller with Boost | Cold Plunge & Ice Bath Cooler | Rapid Digital Temp Control | Fresh & Salt Water, Hydroponics, Aquariums | 90–172 Gal (0.5 HP)
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Availability:
In Stock.
Arrives
Jul 24 – Jul 25
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Color: 0.5 Hp
Features
- THE ULTIMATE ICE BATH CHILLER: Transform your recovery game with powerful 0.5 HP cooling designed for large cold plunge or ice bath setupsachieve rapid temperature drops for post-workout, athletic, or daily wellness use.
- BOOST FUNCTION FOR FAST RESULTS: Built-in Boost Mode activates maximum cooling capacity to reach low temperatures faster, letting you control every sessions intensity and duration with precision.
- DIGITAL PRECISION CONTROL: Easily set and monitor your exact temperature for consistent cold immersion, whether youre targeting muscle recovery, inflammation relief, or mood-boosting cold therapy.
- DURABLE TITANIUM CORE: Features a pure titanium evaporator built for longevity and corrosion resistance, handling both fresh and salt water with exceptional reliability and efficiency.
- MULTI-PURPOSE PERFORMANCE: Perfect for ice baths, wellness plunges, hydroponics, coral reef tanks, or aquariumssame high-tech cooling system trusted by growers, now powering modern recovery rituals.
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.
Color: 0.5 Hp
Material: Anti-corrosive pure titanium evaporator
Capacity: 172 Gallons
Brand: ACTIVEAQUA
Product Dimensions: 19"D x 14"W x 19"H
Wattage: 510 watts
Installation Type: Freestanding
Upper Temperature Rating: 32 Degrees Fahrenheit
Power Source: Corded Electric
Capacity: 172 Gallons
Item Dimensions D x W x H: 19"D x 14"W x 19"H
Item Display Weight: 48.5 Pounds
Color: 0.5 Hp
Style Name: Active Aqua Chiller 1/2 HP
Material Type: Anti-corrosive pure titanium evaporator
Brand Name: ACTIVEAQUA
Model Number: AACH50HP
Manufacturer Warranty Description: 1 year manufacturer.
Global Trade Identification Number: 89
UPC: 638104022989
Manufacturer: Hydrofarm
Manufacturer Part Number: AACH50HP
Item Type Name: Active Aqua Chiller, New with Power Boost, 1/2 HP, Rated 4,020 BTU
Included Components: 1/2", 3/4", and 1" fittings included
Item Weight: 3.53 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jul 24 – Jul 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Color: 0.5 Hp
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.
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Reviewed in the United States on April 6, 2025 Reviewed in the United States on April 6, 2025 by Jonathan
Color: 0.5 Hp
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.
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Reviewed in the United States on December 31, 2022 by Andrew McDonald
Color: 0.5 Hp
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.
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Reviewed in the United States on May 2, 2024 by trbizwiz
Color: 0.5 Hp
I started cold plunging over a year ago (almost daily). I used my above ground pool all last winter and although I can’t control the temperature (I’ve had to break ice a few times) I can decide how long I stay in. When spring was coming and my pool was getting in the upper 50’s I knew I needed a summertime solution. Enter the Active Aqua 0.5 HP water chiller, a 100 gallon Rubbermaid tub with cover, some tubing and a filter. This is not recommended for outdoor use, but I’ve had it outside, uncovered, in all weather conditions and it has kept my water as cold as I want it (even on 100 degree plus days). It has worked flawlessly and I just brought it in for winter (freezing temps now) and am back to the pool until summer. Highly recommend!
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Reviewed in the United States on November 30, 2024 by Frugal Lee
Color: 0.5 Hp
Zero product support. The temperature sensor failed and now the unit won’t work. I can’t get in touch with anyone from Active Aqua or Amazon for support. Now my $1000 chiller won’t work because of a $10 part.
Reviewed in the United States on December 2, 2025 by dawgtime
Color: 0.5 Hp
This is throwing an E1 error code after only about 2 years of operation. I tried contacting activeaqua and they have ignored me so far. At this point I'd give it a 1 star due to the lack of customer support. The user manual doesn't indicate any resolution for that error code. I don't know if the water temperature sensors went out or what happened but in the user manual there aren't any instructions on how to replace the sensors. Just nothing, it's like a black hole once you buy this for $1000 you get only crickets chirping when it fails. It did work well for a couple of years though.
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Reviewed in the United States on September 3, 2025 Reviewed in the United States on September 3, 2025 by Daniel in California
Color: 0.5 Hp
I bought this unit for my pc or computer . My build was i9 10900k 32gb @ 3600mhz corsair rgb ram and 2080 Super. Both the GPU and CPU had a waterblock on it. This machine was sadly only able to cool the pc components down to 39 degrees Fahrenheit . Sure it could keep up with the wattage at load but the problem is the idle time. The unit is apparently programmed to allow 3 minutes for the compressor to cool down. During this time of course your cpu and gpu are putting heat into the water and temps are rising during this time. Despite setting the temperature at 39 degrees and deadzone at 1 the onboard control unit allowed temps to climb 10 degrees higher to 49 degrees before the compressor would cut on. I found a fix for this though by jumping the AC2 wire(red wire) with the compressor wire(brown wire) and the fan wire (forgot which color blue maybe?) with the ac2 wire. This allowed the compressor to run continuously where i got temps down to 26 degrees F. Sure this is a great temperature but its really not good for the compressor to keep it running 24/7. However, i can tell you this unit is very quiet. I wouldnt even mind it running. It is like a window ac unit. Overall I would recommend getting the penguin 1/2 hp unit though because it cam get colder (different refrigerant) and is better quality. I paid 600+$ for this and i dont think it was worth it. It is worth maybe 400$ in my book for our computers but i suggest if you are going this deep to go with penguin and get a chillerbox/freezer to keep you components away from condensation. Although if you are fine with the compressor running 24/7 and not really being able to control temps, go for it. Its at least maybe better than those DIY window ac unit conversions. Also youd need to be okay with the issues noted above. Also the chiller came heavily damaged upon arrival but the blame really is for the postal people who delivered this to me so no need to reflect this in the review.edit: second one i bought can only handle cpu and gpu under load to 45 f. I thus wouldnt recommend it if you want to go colder.
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Reviewed in the United States on June 15, 2020 by GungHo
Color: 0.5 Hp
Amazing I don’t know what people are talking about I’ve owned this for 2 years now and it works flawlessly! Highly recommended!!!
Reviewed in the United States on April 6, 2026 by Rafael Rojas