HQUA-OWS-121 120V 40W 12GPM 1” Inlet/Outlet MNPT Whole House Ultraviolet Water Purifier Filter, +1 Extra UV Bulb
Condition: New
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FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Sunday, Mar 15
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Model: OWS-121
Features
- 40W 12GPM unit, 37.2*2.5 in stainless steel chamber, 1 MNPT inlet/outlet.
- Easy installation, No plumber needed. Horizontal installation and metal connector for the inlet/outlet is recommended.
- NO CHLORINE, Chemical Free and Environmentally Friendly. No change at taste, color, odor, PH.
- Safety and Reliable, 304 stainless steel and Quartz glass are proved to be reliable in different temperature, pressure, pH. And the only materials that will contact with your water.
Brand: HQUA
Special Feature: Heavy Duty
Product Dimensions: 37.2"L x 2.5"W x 2.5"H
Package Information: Bottle
Installation Type: Under Sink
Power Source: Corded Electric
Model Name: OWS-121
Maximum Flow Rate: 12 Gallons Per Minute
Upper Temperature Rating: 140 Degrees Fahrenheit
Manufacturer: HQUA
Product Dimensions : 37.2 x 2.5 x 2.5 inches; 8.8 Pounds
Item model number : OWS-121
Date First Available : June 10, 2019
Manufacturer : HQUA
Best Sellers Rank: #80,021 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #219 in Under-Sink & Countertop Filtration
#219 in Under-Sink & Countertop Filtration:
Customer Reviews: 4.4 4.4 out of 5 stars 1,073 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Mar 15
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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- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Model: HQUA-OWS-12
HQUA has a great product that I use in multiple properties. The product is very easy to install and works as advertised. They are easy to get a hold of for Support and when I had a ballast have some issues after several years they immediately sent me a new one -far beyond any warranty period. I will continue to buy and use their product.
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Reviewed in the United States on November 3, 2025 by Katherine
Model: HQUA-OWS-12
Well, this all started about 3 weeks ago when all of a sudden my wife started getting sick. And then she started to lose her balance. We were thinking that she had a inner ear infection. Well a few days later I went to get a drink from the sink and smelled mold. I'm like what the??? We have been at this property (well water) for over 5 years, and it's always been the very best water in the entire area (admitted by my neighbors). So when I realized we had mold in our well I was shocked. We had just replaced all the plumbing including the pressure switch and pressure tank. So everything was new. So I immediately got on Amazon and started looking for a UV sterilizer. There are a lot to choose from here and most are in the $250-$400 range. I was not ready to pay this much for a UV unit and found this one with no reviews. I was very leery and put it in my list and kept looking. But after almost 4 hours of looking and reading reviews I kept coming back to this one. I finally took the chance and ordered it. I am glad I took the chance. It took two days to get it (Thanks to Prime). I was pretty apprehensive about this, as I knew that there was going to be glass involved and was even more nervous when I opened the first box to find the second one from China. My heart sank and I really thought I had just got taken. But I steadied myself and opened the next box. And this is when every bad thought that ran through my head took a flying leap. I cannot begin to tell you how well this item was packaged. I really wish I had taken the time to take some pictures but since I did not I will describe it to you. Everything is wrapped and double wrapped in heavy duty air bags and bubble wrap. The main case of the light is polished Stainless Steel and is very large ( almost 3 feet). It comes with two bulbs and one quartz protection tube. All three were wrapped with bubble wrap and then inside was three hard cardboard tubes that were also bubble wrapped inside to protect the glass. This level of protection would pretty much save this box from most of the damage it could receive during shipping. The instructions are pretty easy to understand but you need to be extra careful when putting the two gaskets on each end of the quartz tube when inserting it in the main body. Don't let them roll and twist, make sure they are flat against the metal so as to get a good seal. At first I was worried about clearances as the quartz tube gets sealed in the unit on both ends with screw on caps, but it was for not. Everything went together perfectly. Once the quartz tube is sealed up there is a hole on one end that the UV bulb slides into. Then you just hook up the ballast wire connection and slide the cap over it. I used a black zip tie to help keep out the moisture. I then hooked it up to a 3 stage filter system and let it rip. We also sterilized our well with a gallon of bleach and we let the whole thing run for two days before hooking up the filter system. Then after the filter UV system was hooked up we ran it for another full 24 hours before drinking. It was worth every penny. It has been a week now and my wife is feeling much better and the water no longer smells like mold. In fact it has no taste at all. It's clean and great to drink. We even run our swamp cooler through the UV part just to keep the evaporated water from being able to expel anything. This is a high quality UV light Sterilizer and worth every penny I paid for it. Not all come with a extra bulb and none of them come at this price with a extra bulb. The ballast unit has two lights on it, one green and the other red. These indicate the condition of the ballast and the bulb. They both stay on when everything is working right. It's nice to see at a glance that the unit is working as it should. At night you can see the UV light glow through our water hose : ) So buy with peace of mind. I did not get this item at any discount or for free. I purchased this with my own money and took a chance. Now you can buy without those issues and perhaps this seller can make a living selling a good quality product.
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Reviewed in the United States on May 18, 2017 by Handy Handy
Model: HQUA-OWS-12
Excellent, this is my second uv ligth form this manufacrurer. They are much better made, although it is 40Wtts and the former one was 55 Wtts. Same 12 gal/min. I don't know if it makes a difference. The built is so much better and sturdier. Installed it and no leaks. Perfect components fit.
Reviewed in the United States on August 26, 2025 by IKE
Model: OWS-121
The media could not be loaded. Customer service is unhelpful and won't respond after showing proof of defects that caused the quartz tube to break upon inserting the bulb. Wouldnt recommend as this productis almost 300 USD. Update 09-05-25- company sent 2 new quartz sleeves as replacement for the one that had broken as a good faith gesture. Shipping was quick and they came very secure. Install went with no issue. Havent tested the water but its not leaking and the ballast has a green light. Will update with any issues but I would give them a chance again.
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Reviewed in the United States on August 27, 2025 by Dave Dave
Model: OWS-121
Great product and even better customer service. I had a small issue when delivered, but I reached out to them directly and they rectified the issue. Amazing customer service. Thanks so much the system works great.
Reviewed in the United States on September 5, 2025 by Amazon Customer Amazon Customer
Model: HQUA-OWS-12
Helped my newly dug well pass the bacteria test, it definitely works. Ours failed 3 times before we installed this filter. Great price too
Reviewed in the United States on August 27, 2025 by christina hooks
Model: OWS-121
What a great product and fantastic support too. While installing the glass sleeve for the bulb to go in the sleeve broke at the open end so I reached out to the manufacturer and they were very helpful, told them what happened and they sent me out a new sleeve the next day. I would definitely buy from them again
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Reviewed in the United States on July 4, 2025 by Paul Bevilacqua
Model: HQUA-OWS-12
Small issue with product that was quickly resolved. If you are looking for UV light to address your water concerns this is the place to purchase from. Highly recommend.
Reviewed in the United States on August 4, 2025 by bro30a