10 Best Water Purifier 400 Gpd In The Us
Best Choice1
ESP Water Products11% OffMicroline TFC-400-ESP Reverse Osmosis Drinking Water System 50 GPD Under-Sink Filtration
Main highlights- Space-Saving Design: Space-saving design is ideal for under-sink installation as it uses minimal space.
- Improved Water Taste: Quality components provide fresh, delicious drinking water.
- High Capacity: Incorporates 75 GPD membrane and 3/8" outlet tubing for high flow rates.
- Economically Priced: Low-cost filter replacements and system economically priced for quality filter system.
- Connection Options: Comes with air-gap and non-air gap connection options.
9.8Exceptional
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Value for Money2
BLUONICSReverse Osmosis High Capacity 400GPD Tankless 5 Stage Drinking Water Under Sink Filter System RO Home & Commercial Purifier (400 GPD Tankless)
Main highlights- 𝐒𝐀𝐅𝐄 𝐀𝐍𝐃 𝐑𝐄𝐋𝐈𝐀𝐁𝐋𝐄: Under sink Reverse Osmosis water filtration and softener for pure, safer, and healthier water. Bluonics 5-stage RO system 400 GPD removes up to 99% of over 1000 contaminants, including lead, chlorine, fluoride, arsenic, asbestos, calcium, sodium, nitrates, and more. Operating Pressure Range 65-85 PSI
- 𝐏𝐔𝐑𝐄 𝐖𝐀𝐓𝐄𝐑: Enjoy clean, safe, good-tasting, unlimited water for your family every time you turn on the faucet, better than most bottled water at a fraction of their cost. Effectively eliminates many impurities from tap water to offer sparkling clean and great-tasting water. Experience fresher healthier baby formula, tea and coffee, better tasting foods, and crystal clear ice cubes.
- 𝐆𝐑𝐄𝐀𝐓 𝐀𝐅𝐓𝐄𝐑-𝐒𝐀𝐋𝐄𝐒 𝐂𝐔𝐒𝐓𝐎𝐌𝐄𝐑 𝐒𝐔𝐏𝐏𝐎𝐑𝐓: 30-day money-back guarantee. Extended manufacturer warranty. Lifetime tech support from Bluonics. Replacement filters: B08H5R4SYV; B0110LVIOE; B0110LU6FG; B0110LUUVQ; B0110LTEQ8; B0110LVH7W; B0110LX7PW; B0110LWQ3Q; B0192DIZ8Y; B07X9VQ13M; B01I4PO1S4; B017Q5IIT6; B0110LTHDS. Replacement of rings: B08QCN1G13. Replacement canister: B08DH7912T. T fitting to connect fridge or Ice maker: B091BHX2LC
- 𝐄𝐀𝐒𝐘 𝐓𝐎 𝐈𝐍𝐒𝐓𝐀𝐋𝐋: Complete system with DIY instruction, including complete color-coded tubing and all installation hardware. Also has Quick Connect Fittings for easier setup. New Style one-piece manifold with 3-in-1 housing caps that provide a seamless water path effectively eliminating all connections between the housings.
- 𝐂𝐄𝐑𝐓𝐈𝐅𝐈𝐄𝐃: NSF/ANSI 58 - Reverse Osmosis Drinking Water Treatment Systems. Premium quality RO system ensures the highest durability, highest reliability, and low maintenance for many years to come.
9.6Exceptional
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3
SimPure22% OffSimPure Alkaline UV Reverse Osmosis System, NSF/ANSI 58 Certified, Tankless RO Water Filter System 400 GPD, pH+ Remineralization Water Filtration Under Sink, BPA Free, Built-in Pump
Why we love it
1. NSF/ANSI 58 certified guaranteed quality.
2. Alkaline remineralization natural minerals.
3. UV sterilizer tankless design fresh clean water.
9.5Excellent
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4
Waterdrop33% OffWaterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System, Under Sink Water Filtration System, 400 GPD, 1:1 Pure to Drain, Reduces TDS, FCC Listed, USA Tech, WD-G2-W
9.5 Easy installation9.5 Flavor9.1 Instruction9.4Excellent
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5
ReinmosonReverse Osmosis System with Smart Faucet NSF Certified TDS Reduction, Reinmoson 7 Stage Tankless Reverse Osmosis Water Filter System Under Sink, 400 GPD & 2.5:1 Pure to Drain (RMS-WP-RO400)
Main highlights- User Friendly: This ro system under sink measures 15.66” L x 4.48” W x 11.81” H, taking up minimal space under your sink. Additionally, Installation takes only 10 minutes with included 3/8 or 1/2 feed water adapters(Notice: you need to check out the machine with the B0CB13TSXV at NO Cost), pre-install tubing and adapters, and drain saddle. Additionally, our innovative Front-loading filter design allows for quick and easy filter replacement in just 3s, without the hassle of moving objects around the unit.
- Updated 400GPD & 2.5:1 Pure to Drain Ratio: Tankless reverse osmosis system offers faster water flow, actually reaching up to 600 GPD, thanks to our innovative Tubing Design. It can fill a 200ml cup of water in just 7s. Besides, 2.5:1 pure to drain ratio allows you to save up to 250% more on water bills compared to other 1:1 reverse osmosis filter. Offering an economical alternative to bottled water and being environmentally friendly (as no tank means no secondary pollution).
- Smart Faucet with TDS Monitoring and Filter Lifespan Reminding: RO drinking water filter system Offers real-time monitoring of your water's Total Dissolved Solids (TDS), giving you instant insights into the quality of your filtered water. Additionally, the faucet's sensor was enhanced for more precise TDS measurement. Plus, the convenient filter life indicator alerts you when it's time for the RO/PPC filter replacement.
- Premium 7 Stages Filtration: RO water filtration system has 7 stages filtration to reduce 1000+ contaminants and improve the taste of water. The RO filter(3 Stages) + PPC(4 Stages) adopts 0.0001-micron reverse osmosis membrane to decrease TDS from 500 ppm to 15 ppm and intercept sand, particles, salt, PFAS, radioactive substances(Radium), fluoride, heavy metals, vinyl chloride, Ethylhexyl acrylate, isobutylene, ethylene glycol
- NSF Certified & Maintenance: Reverse osmosis water filter meets NSF standards, so the TDS removal rate is certified up to 91.9% and the heavy metal reduction rate is certified up to 96.9%. Replace the RO filter every 2 years and the PPC filter annually. [Search RO: B0CJBXKVJX] [Search PPC: B0CJBXZCKX] Check NSF: https://m.gusav.com/images/I/A1g4BLtR35L.pdf
9.3Excellent
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6
GREATWELLGREATWELL MRO400 High Capacity 400GPD RO Membrane Replacement 400 GPD Tankless Reverse Osmosis (RO) Water Filtration System - Stage 2
Main highlights- Snap-on RO membrane provides easy filter replacement.
- Package includes one 400 GPD RO membrane that works efficiently with a 1.5:1 pure to drain ratio.
- It removes up to 99% of over 1,000 contaminants including lead, fluoride, arsenic, hormones, asbestos and more, and lasts for up to 3 years.
- It is recommended to be replaced every 2 to 3 years depending on the water quality and usage.
- Fits Greatwell ROG400 RO system.
9.2Excellent
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7
Waterdrop20% OffWaterdrop G2P600 Reverse Osmosis System, 600 GPD Reverse Osmosis Water Filter, 7 Stage Tankless RO Water Filter System, Under Sink RO System, 2:1 Pure to Drain, Reduce PFAS, FCC Listed, USA Tech
9.5 Easy installation9.5 Flavor9.3 InstructionWhy we love it
7
stage filtration removes most contaminants
600 gallons per day production
8.9Very Good
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8
Stokk40% OffStokk Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, NSF/ANSI 58& 42, FCC Listed (400GPD, Grey)
Main highlights- USA-BASED SOLUTION & SUPPORT - Choose Stokk's world-class water filtration solutions and US-based customer support for worry-free purchasing and after-sales support. If you're not satisfied with your purchase, feel free to contact our after-sales team and water specialists for lifetime free technical support. (Scroll down for replacement filter purchase options below)
- Thoughtful & Convenient Design: Tankless RO water filtration system is equipped with a built-in filter life reminder, freeing you from tracking the filter's service life. The filter element adopts a twist-and-pull design and can be replaced within 2 seconds. Moreover, Auto flush prevents sediment accumulation, extending the filter's lifespan and ensuring your water stays consistently pure
- Tankless Design: Unlike traditional RO water filtration systems, the Stokk tankless reverse osmosis system boasts a sleek, space-saving design. It saves over 75% of under-sink space and prevents recontamination, making it perfect for American kitchens. Installing the Stokk RO system is a breeze and can be done in just 30 minutes. Save time and upgrade your kitchen now
- TESTED AND CERTIFIED BY SGS - Against from NSF/ANSI 58& 42American National Standard & EPA 200 standard, tested and certified by SGS to effectively eliminate the hidden risks of tap water. Also FCC Certified. Scan the QR for SGS online test report
- TASTE IMPROVING - Reverse osmosis system adapts a composite filter technology, combining pre-activated carbon filter and post carbon filter to effectively reduce odor and chloride. The unique Coconut-shell activated carbon post filter further absorbs odors and residual chlorine, makes it more purer, fresher
- Integrated Product Design: The Stokk reverse osmosis system features the advanced electrical and water circuits to reduce leaks. Unique noise reduction technology allows you to enjoy pure water without the disturbance of noise. NOTE: An electrical outlet and drilling holes is required to operate it
- High Capacity & 2:1 Pure to Drain Ratio: Offer a higher water capacity, which meets demands of family for top-quality water. This tankless RO system saves water waste by 800% compared to traditional under sink RO system. Stokk's home RO water filter system is the optimal choice for those seeking high-performance water filtration
- 8-STAGE FILTRATION - Stokk 8-stage 0.0001μm RO filtration system effectively removes 1000+ contaminants by 99.99%, including TDS, PFAS, PFOA, PFOS, fluorides, chlorides and more
8.6Very Good
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9
Membrane Solutions400 GPD RO Membrane with Housing Set, Reverse Osmosis Membrane and 1812/2012 Housing for Maple Syrup DIY and Aquarium Water Systems (4 Pack)
Main highlights- [High Contaminant Rejection] Remove up to 97% of total dissolved solids from water. This membrane is only 0.1nm, 50 times smaller than even the heavy metals. So these RO membranes can easily remove heavy metal, harmful minerals and other soluble salts from water. Enjoy Your Water with Confidence!
- [DIY RO System] What You'll Get: n400 GPD RO Membrane*1, 12" X 3.0" Membrane Housing*1, Wrench*1, Quick Connect Fittings*3. Make your own reverse osmosis water filter right now! You don't need to buy an expensive all-in-one solution.
- [About RO GPD Ratings] GPD ratings are based on tests performed under specific water conditions (Urban tap water, 25°C / 77 °F, 100 PSI). Every time the temperature drops by 1°C / 33.8°F, the GPD Rating drops by about 3-4%; every time the pressure drops by 1 PSI, the GPD Rating drops by about 1 - 1.5%. For example, a standard 400 GPD RO membrane, at a temperature of 10°C / 50°F (or a pressure of 50 PSI), the GPD Rating is about 200.
- [400 Gallon Per Day] Membrane Solutions High-Quality Reverse Osmosis membrane can produce 400 gallons purified water per day (16.6 gallons / 63.1 liters per hour). 8 glasses of 8oz cups of water are recommended 1 gallon. You can get a gallon of water in about 3 minutes. You just need to open the faucet of the RO purifier using this RO membrane, you can get drinking water.
- [100% Performance and Quality Tested] Membrane Solutions RO membrane uses the most advanced membrane film technology and manufacturing processes, verified by independent laboratory testing. These reverse osmosis membranes are made of the highest quality Polyamide Thin-Film Composite ensures that you get the most filtration and surface area coverage, let you enjoy high-quality taste.
- Tips: Recommend work pressure is 100 psi when using this product in a Maple Syrup reverse osmosis system. And we suggest heating and maintaining the raw sap at 104°F(40°C) to prevent clogging on the membrane while keeping it under 113°F(45°C) to avoid damage to the membrane due to over-high temperature.
8.5Good
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10
iSpring33% OffiSpring RCC7AK, NSF Certified 75 GPD, Alkaline 6-Stage Reverse Osmosis System, pH+ Remineralization RO Water Filter System Under Sink, Superb Taste Drinking Water Filter
9.7 Flavor9.5 Simple to use9.3 InstructionWhy we love it
Removes 99% of harmful contaminants.
Restores natural taste with alkaline remineralization.
Easy DIY installation with excellent support.
8.3Good
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