Frizzlife PD400 Tankless Reverse Osmosis System

Frizzlife PD400 Tankless Reverse Osmosis System



  •  Apply $20 Off Coupon Code when Checkout: RO20OFF
  • [TOP TIER FILTRATION PERFORMANCE] Adopting composite pre-filter and RO membrane with highest filtration precision at 0.0001 micron, PD400 under sink reverse osmosis water filtration system induces a deep 5-stage filtration mechanism that can eliminate more than 1000+ kinds of harmful contaminants (99.99%) from water including LEAD, CHLORINE, FLUORIDE, Heavy metals, Chloramine, VOCs, TDS, Limescale, Arsenic and Asbestos and more. A TDS meter is also included in the package. You know your water!
  • [INNOVATIVE TANKLESS DESIGN] Different from conventional reverse osmosis systems, Frizzlife PD400 under sink RO filter has an impact design without a bulky tank. It saves up to 70% of space and perfectly fits most standard US cabinets. No more secondary pollution shall be worried due to unventilated tank! Additionally, the integrated water cycle board guarantees the RO water filter from water leakage.
  • [LOW DRAIN RATIO & ULTRA LONG SERVICE LIFE] The RO water filtration system has a low drain ratio at 1.5:1(pure: drain), saving up to 450% of water when compared to conventional ones(1:3). With a high capacity of 400 gallons per day, the tankless RO water filter system produces instant fresh pure water to the provided lead-free faucet, filling a cup of water within 12 sec. Two huge filter cartridges loaded, the service life of the system is ultra-long, costing only $0.2 per day!
  • [DIY INSTALLATION & REPLACEMENT] Compatible with most standard US kitchens(1/2”& 3/8”). Comes with a manual, a quick guide, and a step-by-step instructional video, the integrated purification system is an easy to install. Everything needed is included, no plumber required! The replacement takes only 2 sec with a TWIST-IN cartridge design. A smart filter life indicator is embedded, which will beep to remind you when it’s time to change! Search ASR211 &ASR212-400 for replacement filters.
  • [MULTI-USAGE] The system can serve both your sink and refrigerator at the same time by using Frizzlife Ice Maker Kit (IMC-1). To solve the common problem of unstable water pressure when connected to refrigerators, Frizzlife will launch a mini tank that is typically designed for tankless RO systems. The mini tank also addresses the initial lag of the water outflow of the water filter systems.


  • Brand: Frizzlife
  • Availability: In Stock
  • SKU: PD400

under sink water filter water filter system reverse osmosis reverse osmosis system
1.5:1 Low Drain Ratio
  • The advanced water filtration technology of tankless Frizzlife PD400 purification system saves up to 450% of water when compared to other brands on the market. Generating 1.5 cup of purified RO water will only produce 1 cup of waste water.
  • ✔ Make water bills more affordable
  • ✔ Water saving
Tankless ingenious Design
  • Unlike conventional reverse osmosis systems, Frizzlife PD400 undercounter purifier is designed as an integrated unit without bulky pressure tank. It also eliminates secondary pollution due to unventilated tank for your drinking water.
  • ✔ More storage space
  • ✔ Avoid secondary pollution
under sink water filter water filter system reverse osmosis reverse osmosis system
under sink water filter water filter system reverse osmosis reverse osmosis system
Convenient Installation & Replacement
  • With the help of step-to-step instructional manual and tutorial video, you can completely install the PD400 water purification system in few minutes by yourself.The filter can be easily replace with ONE SINGLE TURN.
  • ✔ DIY installation
  • ✔ Twist-in design
Fast and Stable Fresh Water
  • The internal pump assures fast and stable water flow after filtration to the provided lead-free premium faucet, filling a cup of 330ml water in 12 seconds.The filtration system is able to run 400 gallons of water per day, meeting water needs of most households and small companies.
under sink water filter water filter system reverse osmosis reverse osmosis system
under sink water filter water filter system reverse osmosis reverse osmosis system
Filter Life Monitor&TDS meter
  • The color-coded indicators will re mind you to change the filter cartridges in advance. A 3rd party TDS pen is also included in the package. Please allow the water run for a while before reading to get most accurate result! Everything is clear and under control, you know your water!
  • The quality of purified water from Frizzlife PD400 RO filtration system even surpasses the quality of bottled water that is perfect for cooking, coffee & tea making, and other daily usage. It can simultaneously serve both your sink and refrigerator by using an ice maker kit. A mini tank is available now to solve pressure correlated issues.
under sink water filter water filter system reverse osmosis reverse osmosis system
under sink water filter water filter system reverse osmosis reverse osmosis system
Replacement Filters/Pack
  • 1. Replace the 1st stage per 12 months: ASR211
  • 2. Replace the 2nd stage per 2 years: ASR212-400G

Michael P.

The system is, so far, very good. The tester shows value of 40 for my tap water, and bout 7 for filtered water. It's tankless and well design that saves a lot of space under sink. However, we need to consider of using it directly for the refrigerator (drinking water). It seems like the pressure from the system is not strong enough to push the filtered water through the refrigerator. Without the mini tank installed, the water from refrigerator will be pause and run frequently. With the mini tank installed, water drips out continuously but slow. I am writing this to remind you to not try as I have done as above. It would waste your time since the system was designed for under sink.


Everything was included in the shipment, and was easy to install. Got rid of all the harmful beasties in the water, and tastes great. Takes up much less room under the sink than the tank-type system. Glad I made the purchase...

Douglas N.

Love the ease of installation. The system is great it eliminates the big tank under the sink. Filters are easy to change out.


Love this system! Coming from an old-school 5-stage RO system with the tank under the sink, this one is far superior. Easier to install, takes up much less room, produces water indefinitely (vs. a couple gallons from the tank before you have to wait for it to rebuild), and much less wastewater is produced. Annual filter cost seems to be roughly comparable except being much easier to install on this one. As long as you have an electrical outlet available, this is the RO system to get. Oh, and the faucet is beautiful as well!

Glennjohn B. Glaraga

When I received this product, the box was huge, so I was a bit intimidated. I was able to find a video on YouTube where I paused as needed. Install was easy, water taste great, the price was right. I would recommend this product to anyone. It requires power, so you will need to install an outlet or get an extension cord to an outlet. It moans so if you're not scared of a little moaning at night in the dark in the kitchen then you're good.

Rey Rojo

Just completed the installation. It was simple and easy install. I’m looking forward to enjoying the reverse osmosis tankless system. So far I like it.

Christopher R.

Easy to install, plenty of spare little parts (such as the clips and orings), the little faucet included is very nice and the amount of space I cleared up under my sink from my old RO system is a game changer. The faucet is able to stay on without holding down on the valve like my previous one, which is fantastic.


I've had 2 RO systems from one of the top brands before, had nothing but problems... eventually had to get rid of both of them. I've spent many hours on research and thankfully I picked this system as a replacement, it's just wonderful, very well built, compact and super easy to install and maintain, fully recommend! Thank you Frizzlife!

Great Dragon

I have lived in Santa Clara for 20 years and the taste of the drinking water is bad. I have installed several under-sink water filter systems, but I am impressed with this model which can be considered the top of line. It looks great and there is no bulky tank anymore. The package is nicely packed with all the necessary pipe adapters, tubes and even a cutting blade. I don’t need to get any adapter kit from hardware store. Installation guide is clear and easy to follow. The tubes are color coded. The pump in the unit is quiet. All in all I am very impressed with this RO filter so far and expect it to service us for a long time.

Earth Spirits

I really like these higher rated GPD RO membranes that can produce enough water flow to not need a storage tank. It is one less component that will need maintenance. I have a 2 gallon storage tank x3 in my system for a total of 9 gallons of stored water. I periodically have to check the internal air pressure of each tank and make sure it is close to the system water pressure. If it is low I have to add air. They do get lower in pressure after a year or two and the internal air bladder will eventually fail and the tank will need replacing. Going tankless is a great idea. The only down side to them is that you will still need a tank for them to work with refrigerators. There needs to be pressurized water at the refrigerator for most brands in order for them to dispense properly. Frizzlife currently doesn't have their MWT3 available on Amazon. You can of course use another brand and tank if you want. If you are not connecting to a refrigerator then you won't need a tank at all. I have been testing the 400 GPD version but would recommend the 500 or even 600 GPD for even better water flow. I like the quality of this kit. It also seems to be a good value too. 5 stars.

Paul B.

I decided to buy the Frizzlife Reverse Osmosis System for my aunt because after checking the water in her house we found out that it was worse than in my house (in my sink). She should have very clean water because her house is connected to the pipe from the mountain area. Unfortunately, it is not. I recommended her the RO system because I have one in my house (and I am extremely happy about it) so after putting it together she can finally taste pure water (if you drink the water from the sink and from the RO system you can taste the difference - RO does not taste, it is pure with minerals, compared to tap water). Thank you again and I recommend it to anyone. Get the machine, save money on bottled water, and stay healthy.

Get the job done

Setup was a breeze after watching the video online. In total from unboxing to install took about 15 minutes. I don't have a lot of space under my sink and this compact design is awesome. I'm getting good pressure so I took the opportunity to split the connection to my ice maker which was well worth it as my ice now tastes great.

Dmitry Hill

Our water has a high level of chlorine and iron in it and this system takes all of it out. I was also able to install this myself with the help of the videos I found on their website, so if you are a do it yourself type of person, you should be able to handle this with no problems. I calculated the cost to run this from how much I pay for filters each year and it works out to about 27 cents per day, which is much cheaper than bottled water. If there is one thing I love Its pure clean filtered water.


We originally had the traditional tank RO system from a company that charged us 25$ a month and never replaced filters on time. we changed to Frizzlife tankless system, the system gave us a lot more room under the cabinet, the faucet is luxurious and nicer quality and the quality is noticeable. I installed it by myself by watching their YouTube video /Chanel and it was very simple. You do not need to be a Plummer to do it. it comes with extra hoses and connectors that you can use if you want. I purchase a connectors/ hoses extension kit for $8 that I used to split to the refrigerator Installation total time if you have all tools lined up (including a drill bit for the faucet and drain) is less than 20 minutes. the filters have a barcode to easy scan and order replacement and overall give you the assurance you network with a reputable company and not alone in this adventure. We also got the alkaline optional filter. overall flow rate is good and we use it a lot.


Just purchased this product, PD400 from Frizzlife, and will update once I have tested a bit. I was interested in this product due to the low cost and all the great reviews on the PD600 and because I reached out to Frizzlife on questions around attaching my fridge water and ice. And they have been very quick to respond, so A+ on their customer support. Here is the response they sent "The system can be work with fridge ice maker, it will need an IMC-1 ice maker kit for set up....your icemaker [hose] should not exceed 10-15feet...the outlet water pressure after RO filter is 14.5~29psi, please make sure it's good for your icemaker." I will update once I test!

Q: What is the material used for the faucet? Do you have a black faucet available to match with my sink?

A: Hi, thanks for enquiring with us. The faucet that comes with the RO unit is made of stainless steel with a brushed nickel finish. If you want a black faucet, we have matt black faucet available.

Q: Can the system be hooked up to the refrigerator?

A: Hi dear customer, Thank you for inquiring with us! Yes, the unit can be hooked up to your refrigerator/ice-maker by using the Frizzlife IMC-1 kit. Please kindly note, if the distance between the filter and the appliance exceeded 15 ft, you might need a mini tank to boost up the water pressure. The mini tank will be available soon! 

Q: What are the dimensions of the box that goes under the counter? In a motorhome, every inch counts.

A: Hi dear customer, thanks for enquiring with us. The dimension of the PD400 machine are: 15.5(length)*5.3(width)*14.7(height) inch.

If you have any further questions, please feel free to contact us.

Q: Why is it that the tap water feeding tube uses a 3/8” instead of 1/4” tube-like reverse osmosis?

A: Hi dear customer, thanks for inquiring with us. Yes, this RO system uses 3/8" PE tubing as a feeding tube to ensure the water pressure for the system.


Model No.PD400Filter Cartridge InsideASR211 &ASR212-400 
Product Dimensions19.6 x 19.4 x 8.1 inchesItem Weight23.6 pounds
Operating TemperatureMin.39ºF,Max 100ºFOperating PressureMin.20psi Max. 80psi
Flow Rate0.27 gallons/m
@25 C(77 F)
Usage EnvironmentIndoor use only 

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