--- product_id: 90737272 title: "TWS-12 Ultraviolet Water Purifier Filter for Whole House Water Purification,12GPM 120V, 1 Extra UV Lamp + 1 Extra Quartz Sleeve" brand: "hqua" price: "€ 540.28" currency: EUR in_stock: true reviews_count: 9 category: "Hqua" url: https://www.desertcart.hr/products/90737272-tws-12-ultraviolet-water-purifier-filter-for-whole-house-water store_origin: HR region: Croatia --- # 12 GPM max flow 55W powerful UV lamp 304 stainless steel chamber TWS-12 Ultraviolet Water Purifier Filter for Whole House Water Purification,12GPM 120V, 1 Extra UV Lamp + 1 Extra Quartz Sleeve **Brand:** hqua **Price:** € 540.28 **Availability:** ✅ In Stock ## Summary > 💧 Pure water, pure confidence—whole house UV protection that’s easy to install and impossible to ignore. ## Quick Answers - **What is this?** TWS-12 Ultraviolet Water Purifier Filter for Whole House Water Purification,12GPM 120V, 1 Extra UV Lamp + 1 Extra Quartz Sleeve by hqua - **How much does it cost?** € 540.28 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/90737272-tws-12-ultraviolet-water-purifier-filter-for-whole-house-water) ## Best For - hqua enthusiasts ## Why This Product - Trusted hqua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse Design:** Inspired by Big Blue, this sleek 21-inch UV reactor fits easily in tight spaces while delivering industrial-grade purification. - • **Eco-Friendly & Chemical-Free:** Harnesses UV light to purify water without harmful chemicals or byproducts—safe for your family and the planet. - • **Long-Life UV Lamp & Quartz Sleeve:** 9000 hours of continuous UV disinfection with easy annual lamp replacement and biannual sleeve maintenance for peak performance. - • **Whole-House Purity, Zero Compromise:** Seamlessly integrates with your plumbing for 99.99% microorganism elimination without altering water taste or chemistry. - • **Effortless Installation & Maintenance:** Wall-mountable with clear professional manual; minimal upkeep keeps your water pristine year-round. ## Overview The HQUA-TWS-12 Ultraviolet Water Purifier is a compact, whole-house UV filtration system delivering up to 12 gallons per minute of chemical-free water purification. Featuring a durable 304 stainless steel chamber, a high-output 55W UV lamp with a 9000-hour lifespan, and a high-transmittance quartz sleeve, it ensures 99.99% reduction of harmful microorganisms without affecting water taste or chemistry. Designed for easy wall-mount installation and straightforward annual maintenance, it’s the professional-grade solution for millennial homeowners seeking safe, eco-conscious hydration. ## Description Product description How it works? The ultraviolet (UV) treatment process is an extremely quick physical process. Ultraviolet light mutates and/or degrades DNA. When the DNA is damaged, the microorganism becomes unable to function because its “instructions” are garbled or missing. A microorganism that has no instructions cannot function and reproduce. It will be rendered harmless and eventually dies. In the UV purification process, water is purified as it runs through a stainless steel chamber (also called a “reactor”) that contains a special UV- producing lamp. As the water flows past the lamp, the microorganism in the water receive an effective dose of UV, preventing them from reproducing. HQUA UV Water Purifier is a water treatment device that needs to be assembled, but it’s easy to finish. Each part of it have its own function, we will introduce them hereby Main Components Of The HQUA UV Water Purifier. UV Reactor Chamber Part Number: TWS-12C The UV chamber is made by 304 stainless steel, which was widely used in food industry, medical, considered to be stable and durable. Length-21 inch, diameter-3.5 inch, inlet/outlet 3/4” DN20 1.05 inch/ 26.67mm , no requirement of the water flow direction. UV lamp & Quartz sleeve Quartz sleeve (Part Number: HQUA-TWS-12Q ) not only provide an interspace for the UV lamp, but also ensure high transmittance (90%) for the UV light. UV lamp (Part Number: HQUA-TWS-12L , GPH436T5L/HO standard 4-pin) provide enough UV light to destroy the DNA of the microorganism. Electronic Ballast Electronic ballast (Part Number: HQUA-TWS-5595EB ) connect the UV lamp and the power (120V/60Hz), work as a controller in the system with 3.2 ft. (100cm) power cord and 3ft. (90cm) lamp cord. Green light on means everything alright, off when there is no power out. Go Green and Satey Green and safe purification treatment. Lack of chemicals means no harmful chemical byproducts are going back into the nature. And it avoid the potential threat residual chlorine, the taste of your water is not affected in any way as well. Effective Purification HQUA water purifier ensures a 99.99% reduction of microorganism in the water. The corresponding UV exposure is 30 mJ/cm². A slower flow rate, a higher wattage device or two purifiers might be effective to handle a strong microorganism contamination problem. Installation and Maintenance Easy installation and maintenance. No need for chemical supplement, the equipment is intended to be installed in the pipe system permanently. the lamp needs to be replaced annually and the quartz sleeve should be cleaned every 6-12 months, replace every 2 years. Complete Technical Description Please CHECK YOUR BOOKLET in the package before you handle this system. We have a complete instruction manual that contains many detailed description of the unit that will help you a lot. NOTICE Pre-treatment Water quality is extremely important for the optimum performance of your UV system. The following levels are recommended Iron 75% Hot Water Warning The water in the chamber of this equipment can be very hot (Approx. 140 °F) during an extended periods of no water flowing. It would not be a problem if the pipe system is long enough to disperse the heat. But if it happens,it is recommended to purchase a temperature control valve if this is an annoying problem for you. If you need a system for HQUA-OWS-12/121/124/12T or HQUA-TWS-12 , please search “ B09HC3PP14 ” or “ HQUA WS-DV01 ” on desertcart. Maintenance UV lamp: Replace the UV lamp annually (or biennially if seasonal home use) to ensure maximum purification. Quartz Sleeve: Clean the quartz sleeve every 6-12 months, replace every 24 months. The coating on the quartz sleeve will slowly form due to the minerals in the water. This coating must be removed because it reduces the amount of UV light reaching the water, thereby reducing purification performance. If the sleeve can not be cleaned, it must be replaced. Please search " B07JF2CGWB "" B07ZFDBKPB " for the replacement quartz sleeve and " B07JDRB6LH "" B07ZFBPGQW " for the UV bulb. Review: Seems to do the job, worth the money - Easy to install with basic plumbing materials. Seems to work as my water tested negative for bacteria post installation. Seems cheap to run. Be careful installing the light / sleeve, very easy to break. Review: Works! Now a year later, time for yearly maintenance...with two howto hints - Yearly maintenance consists of changing the UV tube and cleaning the quartz tube. Remove the old UV tube and put aside. Next, following the instructions, shut off the water to the unit, drain that loop and remove the gasketing rings on each end. Remember that gloves must be worn when handling quartz glass as hand oil will eat at them. Remove the tube and clean it, as per the instructions. I have clean softened water so the outside of the tube was fine. What the instructions don't cover is that the UV bulb heat causes outgassing of the plastic guard on the tube...which puts a film on the INSIDE of the tube (like the film on the inside of your car windshield). How to clean it, the instructions don't say. HINT #1: Get a 24" claw mechanic's pickup tool like this: www.desertcart.com/ALINNA-Flexible-Grabber-Bendable-Reaching/dp/B098F3VWDV/ and a piece of paper towel. Gather a dry piece of the towel up in a LOOSE wad with the pickup tool and gentle feed it down the quartz tube, turning it gentle to wipe the inside of the tube. Gently pull it out. Now reassemble the tube in the filter house and reseal it with the o-rings and collars. Put on the gloves if you haven't and feed the new tube in. Now HINT #2: You have to unplug the ballast and replug it after connecting the UV tube to the ballast 4 conductor connector. If you never unplug the ballast before connecting the new lamp, it won't come on. Hope this helps. My original review, a year ago...this still holds.=================================== I've been a professional mechanical contractor. The gear was was well made and straightforward to install. The one item damaged in shipment was replaced cheerfully and immediately; they even gave me two in place of the one busted one. That's service and customer attention! ## Features - 12GPM 55W 21 inch long and 3.5 inch diameter. MNPT Inlet/Outlet: 3/4" Inch. - NEW DESIGN. Idea from BIg Blue. Smaller Size, Easier to Install and integrate into the pipe system. - No Secondary Pollution. No change in taste, odor, pH or conductivity nor the general chemistry of the water. - 9000 hours Life of UV bulb. Efficiency purification: Reduce microorganism. - Professional manual book are contained. Installation, maintenance, troubleshooting are easy to finish with that. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07JLNYH49 | | Best Sellers Rank | #36,458 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #24 in Whole House Water Treatment Systems | | Brand | HQUA | | Brand Name | HQUA | | Capacity | 257.25 Cubic Inches | | Container Type | Tube | | Customer Reviews | 4.5 out of 5 stars 579 Reviews | | EU Spare Part Availability Duration | 12 Months | | Included Components | 304 Stainless steel chamber, 2 UV bulbs, 1 quartz sleeve, 1 electronic ballast, 2 plastic brackets holder, several o-rings Included Components 304 Stainless steel chamber, 2 UV bulbs, 1 quartz sleeve, 1 electronic ballast, 2 plastic brackets holder, several o-rings See more | | Installation Type | Wall-Mounted | | Item Dimensions L x W x H | 21"L x 3.5"W x 3.5"H | | Item Weight | 4.38 Kilograms | | Manufacturer | BEIJING CHARMSSTONE ELECTRONICS TECHNOLOGY CO LTD | | Material | Stainless Steel | | Material Type | Stainless Steel | | Maximum Flow Rate | 12 Gallons Per Minute | | Model Name | Water Purifier | | Model Number | HQUA-TWS-12 | | Other Special Features of the Product | UV Purification | | Part Number | hqua-60671998 | | Power Source | Ac | | Product Dimensions | 21"L x 3.5"W x 3.5"H | | Purification Method | Ultraviolet | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | UV Purification | | UPC | 606719989072 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 140 Degrees Fahrenheit | ## Product Details - **Brand:** HQUA - **Capacity:** 257.25 Cubic Inches - **Installation Type:** Wall-Mounted - **Material:** Stainless Steel - **Package Information:** Tube - **Power Source:** Ac - **Product Dimensions:** 21"L x 3.5"W x 3.5"H - **Purification Method:** Ultraviolet - **Special Feature:** UV Purification ## Images ![TWS-12 Ultraviolet Water Purifier Filter for Whole House Water Purification,12GPM 120V, 1 Extra UV Lamp + 1 Extra Quartz Sleeve - Image 1](https://m.media-amazon.com/images/I/61FoFGxLMmL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: I want to use this in rv (had one in last rv), turn off when traveling (would never mount horizontally for vibrational harm) any precautions to take?** A: I have mine mounted horizontally for one year and so far so good **Q: Does the unit have a warranty?** A: Yes, please take the user manual in the Technical Specification part as a reference. **Q: Is it okay to use this with an extension cord?** A: for the electronic ballast? It would be okay. **Q: If I cycle this product on and off to match the power cycle of my pump for the holding tank, will it shorten the life of the bulb?** A: The on/off times should last over 10,000 times for the uv bulb. Do not over that, and it would work fine. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Seems to do the job, worth the money *by J***S on March 19, 2026* Easy to install with basic plumbing materials. Seems to work as my water tested negative for bacteria post installation. Seems cheap to run. Be careful installing the light / sleeve, very easy to break. ### ⭐⭐⭐⭐⭐ Works! Now a year later, time for yearly maintenance...with two howto hints *by A***R on August 30, 2023* Yearly maintenance consists of changing the UV tube and cleaning the quartz tube. Remove the old UV tube and put aside. Next, following the instructions, shut off the water to the unit, drain that loop and remove the gasketing rings on each end. Remember that gloves must be worn when handling quartz glass as hand oil will eat at them. Remove the tube and clean it, as per the instructions. I have clean softened water so the outside of the tube was fine. What the instructions don't cover is that the UV bulb heat causes outgassing of the plastic guard on the tube...which puts a film on the INSIDE of the tube (like the film on the inside of your car windshield). How to clean it, the instructions don't say. HINT #1: Get a 24" claw mechanic's pickup tool like this: www.amazon.com/ALINNA-Flexible-Grabber-Bendable-Reaching/dp/B098F3VWDV/ and a piece of paper towel. Gather a dry piece of the towel up in a LOOSE wad with the pickup tool and gentle feed it down the quartz tube, turning it gentle to wipe the inside of the tube. Gently pull it out. Now reassemble the tube in the filter house and reseal it with the o-rings and collars. Put on the gloves if you haven't and feed the new tube in. Now HINT #2: You have to unplug the ballast and replug it after connecting the UV tube to the ballast 4 conductor connector. If you never unplug the ballast before connecting the new lamp, it won't come on. Hope this helps. My original review, a year ago...this still holds.=================================== I've been a professional mechanical contractor. The gear was was well made and straightforward to install. The one item damaged in shipment was replaced cheerfully and immediately; they even gave me two in place of the one busted one. That's service and customer attention! ### ⭐⭐⭐⭐⭐ Jorin acknowledged HQUA-TWS-12 Ultraviolet Water Purifier Filter for whole house *by J***N on April 28, 2026* My plumber recommended this unit. Seems to be working just fine. It's a little small, and I've read recent articles that shorter bulbs might not be doing as good a job as longer ones? Anyway, 6 months now using it and not difficulties, and I ain't got sick yet -- so there's that! Jorin acknowledged. ## Frequently Bought Together - HQUA-TWS-12 Ultraviolet Water Purifier Filter for Whole House Water Purification,12GPM 120V, 1 Extra UV Lamp + 1 Extra Quartz Sleeve - SimPure 40/200 Micron Spin Down Sediment Filter, Reusable Whole House Sediment Water Filter, Pre-Filtration System for City/Well water, 1" MNPT + 3/4" FNPT + 3/4"MNPT, BPA Free - SimPure Whole House Water Big Filter Housing (DB10C), 10" x 4.5", Blue for Whole Home Water Filtration, Sediment Water Filter System for Well, 1" NPT Brass Port (Clear Housing) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/90737272-tws-12-ultraviolet-water-purifier-filter-for-whole-house-water](https://www.desertcart.hr/products/90737272-tws-12-ultraviolet-water-purifier-filter-for-whole-house-water) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-19*