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ALTHY

ALTHY Whole House UV͎ Ultrąviolët Water Filter Purifier

Based on 37 reviews
Condition: New
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$260.99
Holiday Deal · 10% off was $289.99

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: 16 left in stock
Fulfilled by Amazon
Arrives Tuesday, Nov 17
Order within 2 hours and 50 minutes

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At a glance

Condition
New
Model
UVF-FS48
Capacity
100000 gal
Dimensions
18.9"L x 4.92"W x 3.94"H
Material
Stainless Steel
Special Feature
Automatic Shut-Off
Package Information
Dispenser
In the box
Stainless Steel BodyUV͎ lampQuartz SleeveBallastO-RingsManual

Features 5

  • Whole-house water treatment: As an upgraded version, ALTHY UVF-FS48 is the perfect step to add to your whole-house water filtration system, ALTHY powerful UV-C technology , allowing you to enjoy all the water in your home with peace of mind.
  • Ballast with intelligent flow sensor: upgraded 110V-240V 48W ballast with intelligent flow sensor, automatic control and monitoring system performance. The Display panels shows the counter down timer, If there is no water flowing through it, counting down from 600s to Os, Once the number reaches 0, the UV lamp will be off automatically. The Number will show 600s again if there is water flow passing the UV chamber. Energy saving, prolonging the service life of the system, and preventing the system from overheating.
  • Premium Safe Materials: 1-inch MNPT inlet/outlet design for 12 GPM flow and minimal pressure loss; Premium 48-watt UVC lamp with durable quartz sleeve, bulb life up to 9,000 hours, ensuring water in 304 Stainless steel The long residence time in the reaction chamber enables efficient processing;
  • Easy installation and maintenance: Comes with mounting clips for easy DIY installation. Annual replacement of the UV lamp and regular cleaning of the quartz sleeve are recommended to ensure optimum performance.

Description

ALTHY UV͎ systems have built-in intelligent flow sensor, automatic control and monitoring system performance. Maintenance Focus on Healthy Technology, Invest in Healthy Drinking Water Solutions, Reap a Wealthy Life. Water is the source of life, but purity is no longer a matter of course. When industrial pollution erodes water sources and daily drinking water hides hidden dangers,we choose to use technology as a shield to redefine "clean". When chronic diseases and sub-health become the hidden pain of the times,we believe that water can be a natural "health medium". When Plastic accumulation becomes a global issue and sustainable development is urgent,we promise: to use green technology to make clean water burden-free and make the earth lighter.

Specs 23

Brand ALTHY
Special Feature Automatic Shut-Off
Product Dimensions 18.9"L x 4.92"W x 3.94"H
Material Stainless Steel
Capacity 100000 gallons
Package Information Dispenser
Installation Type Under Sink
Purification Method UV͎

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 17

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Easy to install...
I bought this unit to install with a whole house purification system, and the combination really worked well to clean up the water in this area....The install went pretty well, but as noted before, there was some leakage, mainly between the flow sensor attachment (brass) and main body, (stainless steel). But this was easily solved, with heavy duty teflon tape, and pipe sealant....been leak free every since!! ... show more
Reviewed in the United States on August 21, 2026 by Estarx..
Exceptional customer service and product
I bought this product based on ratings and reviews. After installing the unit, it would not work. All installation instructions were followed correctly. I contacted the company to seek help with this and was pleasantly surprised at their quick response. After forwarding some requested videos of the unit in operation and water flow rates - they were unable to determine the cause (whether it was the ballast unit and/or the flow sensor), so they sent both items. The whole process of emailing back and forth took 8 days, with new parts arriving from overseas a week later. After installing the replacements, my UV filter now works flawlessly. I am extremely pleased with the customer service, technical support, and follow up. And would highly recommend this company and it’s products. ... show more
Reviewed in the United States on June 7, 2026 by ms
The flow switch and ballast are not sold seperately.
Worked great for a year. The ballast has quit and they do not readily sell a replacement. I should have paid more for a domestic brand that sells spare parts...
Reviewed in the United States on October 6, 2026 by Kindle Customer
Great for an off grid set up
This thing is awesome. If you are off grid and need to conserve power then order the unit with the 10 minute bulb power down. Otherwise, the bulb stays on all the time. Super clean water and well worth the purchase.
Reviewed in the United States on May 17, 2026 by T Duncan
Water system replacement part.
Our old ultraviolet light for our water system needed replacement. We paid a lot more for the old one. The price is a great deal. It is easy to install, no leaks. Built well.
Reviewed in the United States on May 25, 2025 by Leann Miller
It leaks at the 1" fittings.
I seldom leave reviews on both good or bad experiences. But this one deserves to be written to help buyers beware. The 1" fittings leak. Nothing can make it not leak. Teflon tape - leak, pipe dope - leak, industrial pipe dope - leak, tighten with a huge wrench - leak. Tell me how to stop the leak, I'll listen, Edit experience: I disassembled the 1" fittings a third time and cleaned the pipe sealant from the threads. I then wrapped the threads with heavy duty teflon and lightly coated the teflon with sealant and reconnected. No Leaks. ... show more
Reviewed in the United States on June 17, 2025 by Amazon Customer
Great unit
Easy install Quality construction
Reviewed in the United States on June 15, 2025 by Bill Valentine
ALTHY Whole House UV͎ Ultrąviolët Water Filter Purifier
The Althy service people are very helpful in resolving issues. They are polite, honest, and pleasant to work with. When my UV light developed an issue, they were quick to respond by sending me a new unit. The ALTHY service went above and beyond my expectations in resolving my issue. I highly recommend their products. ... show more
Reviewed in the United States on October 21, 2025 by Andreas
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