A Better RO System | The Home Master TM under sink reverse osmosis system features an innovative design that solves the most common problems found in canister and tankless RO systems.
Highly Pure Water | Sediment and carbon filtration, combined with reverse osmosis purification, removes up to 98% of chlorine & chloramines, chemicals, lead, heavy metals, fluoride, microplastics, TDS, and thousands more. 100% BPA and lead-free.
NSF Certified Components | Built with high-quality, NSF-certified materials that meet or exceed U.S. standards for safety and performance. Made in the USA.
Faster Flow Rate | The included Fast Flo RO! Kit features larger fittings and tubing, providing twice the flow of traditional RO systems for convenient access to purified water.
Modular Design | Easy, tool-free filter changes once per year or every 3,900 gallons. Simple to maintain and upgrade in this under counter water filter system.
Catalytic Carbon | Home Master catalytic carbon outperforms ordinary activated carbon in removing stubborn chloramines and other chemicals.
Dedicated Sediment Filter | 5-micron depth sediment filter prolongs downstream filter life, ensuring optimal water pressure and reduced water waste in this under sink RO system.
5-year Limited Warranty | Includes a 30-day 100% satisfaction money-back guarantee.

Solutions, Not Compromises | Home Master TM Undersink Reverse Osmosis Water Filtration System

The Home Master TM Undersink Reverse Osmosis System delivers solutions, not problems. Even the most health conscious individuals will be impressed with its exceptional water quality. This premium drinking water system has been designed to convert your tap water into exceptionally pure drinking water by removing up to 98% dissolved solids, metals, and harmful chemicals. Home Master’s innovative modular design eliminates common problems like canister filter housing leaks, slow flow rate, high water waste, and service challenges. It’s all backed by a 5-year limited warranty, and Made in the USA.

The innovative design of Home Master eliminates the most common problems found in traditional RO systems — canister filter housing leaks, slow flow rate, and service challenges. Home Master RO systems use larger fittings and tubing than traditional RO systems to double the flow rate, and the modular all-in-one filter design makes annual filter changes fast and efficient, reduces contaminant build up, and helps to eliminate leaks.

Clean, refreshing water - FAST

Home Master TM Undersink Reverse Osmosis system uses sediment filtration, catalytic carbon and activated coconut shell carbon and reverse osmosis purification to remove up to 98% of chlorine & chloramines, chemicals, heavy metals, fluoride, total dissolved solids (TDS), pharmaceuticals, microplastics, and thousands of other contaminants.

Many tankless RO systems use imported ‘loose’ style membranes which can only achieve 90-94% reduction in total dissolved solids including heavy metals. Those membranes are intentionally loosely wound to allow for more flow, sacrificing purity to compensate for not having a storage tank. Home Master uses only the highest quality American made Dow membranes which can achieve up to 98% reduction in total dissolved solids including heavy metals.

The water flow from traditional RO systems takes 40 seconds to fill a tea kettle or large pasta pot – a level of performance that was unacceptable to Home Master’s engineers. The Fast Flow RO Kit (included with Undersink RO system) uses larger fittings, tubing, and high-flow components to effectively double the water flow from the RO faucet

Saves Time & Frustration | Easy change filters

Filter changes on traditional RO systems can be a real pain. They often require heavy tools, and brute force to loosen stuck canisters sealed shut by accumulated hardness minerals and icky contaminants. Home Master makes annual filter changes easier than ever before. Its modular design provides full access and visibility, and push-in-fittings make filter changes quick and painless– no wrenches required.

Modular Filter Design | Beautiful, not pretty

The most significant problem associated with traditional RO systems is the ‘canister filter housing’ design, where only the filters are changed, and not the filter housings. Sediment, microorganisms and biofilm can accumulate in the canisters and, over time, the canisters will weaken, begin to leak and ultimately fail. This can potentially lead to serious water damage and costly home repairs.

Some tankless RO systems employ a solid manifold design that is impractical to upgrade or service.

Home Master’s innovative system uses a modular design where the components are exposed and the ‘all-in-one’ filters are incorporated into their housings. This makes annual filter changes fast and efficient, reduces microorganism and biofilm build-up and helps to eliminate leaks. Home Master filters last longer than traditional RO systems’ filters — only requiring a filter change once a year or every 3,900 gallons. When it comes to installation, service and system performance – Home Master modular design is beautiful.

Save Time, Money and Water | Improved water efficiency

Home Master systems use granular carbon in the pre-filter rather than of carbon block to ensure the water pressure stays as strong as possible. Stronger water pressure to the membrane produces more water with less waste. Compare Home Master’s 8.5 inches of carbon contact time with the competition’s thin wall carbon block. More carbon contact produces cleaner water.

All Home Master RO systems use powerful catalytic carbon filtration media in the carbon prefilter to treat the very persistent chemical disinfectant chloramine. Ordinary carbon filters are unable to effectively remove this stubborn contaminant that is now being deployed nationwide to replace chlorine. It takes the more advanced carbon media known as catalytic carbon.

Some tankless RO systems fail to use a dedicated sediment pre-filter, forcing the entire sediment load into their carbon block which can slow membrane production, increase waste, maintenance requirements and costs. All Home Master systems use a dedicated 5-micron depth sediment pre-filter to prolong overall filter life, and ensure the highest possible water efficiency.

Home Master Does It Better | Better water efficiency, faster flow rate, reduced TDS creep

The Home Master Fast Flow RO! kit and optional non-electric permeate pump upgrade solve several problems commonly found in other RO systems: TDS Creep, slow flow rate, and poor water waste. Home Master Fast Flow RO! kit nearly doubles the flow rate by incorporating larger fittings, tubing and other high flow components.

Some cannister and tankless RO systems fail to use a dedicated sediment pre-filter filter or use carbon block which can slow membrane production and increase waste, or increase maintenance requirements. All Home Master RO systems use a dedicated 5-micron depth sediment pre-filter to prolong filter life, and ensure the best possible performance.

This Home Master system includes a non-electric permeate pump to further improve system efficiency. This device reduces water waste by up to 80% and increases water production by up to 50%, with about a 1:1 waste ratio. It allows the tank to fill fuller, plus, it provides slightly cleaner water by virtually eliminating a condition known as -TDS Creep – a significant issue with some tankless RO systems. TDS stands for Total Dissolved Solids which includes the hardness minerals, salts, and heavy metals.

Home Master systems with permeate pump address issues of TDS Creep by boosting pressure during the fill cycle, and keeping pressure to the storage tank and permeate side of the membrane constant. We increase efficiency by regulating the flow of water on both side of the system - feed water and permeate water. Furthermore, because our storage tank keeps purified water on tap, wasteful flushing is not necessary between common periods of inactivity.

Add the permeate pump upgrade to your cart today for a near 1:1 waste water to purified water ratio

Includes all you need for DIY installation

The Perfect Choice

With so many different RO systems, selecting the perfect one can be difficult. Choose the system that produces consistently pure, great-tasting water – has a reliable and easy to use design, and provides a faster flow rate. Order the Home Master TM Undersink Reverse Osmosis system that brings solutions – not problems.

5-year limited warranty | BPA Free | Lead Free | Made in the USA

The Right Tool For The Job

Consider the entire Home Master product line. Interested in UV filtration, Mineral Water on Tap, systems made for well water, or all of the above? Home Master will ensure you have the right tool for the job. Consider the Artesian Full Contact TMAFC for Mineral Water on Tap, the ULTRA for enhanced Iron filtration + UV sterilization, or the HydroPerfection for 9-stages of filtration, purification, sterilization, and enhancement.

Regardless of the system you choose, all Home Master models are backed by a five-year limited warranty, and US technical support.

Upgrades

Faucet Upgrades

Home Master offers a wide variety of faucet options for pairing with our RO systems. Those interested in eliminating plastic from their faucet will find the US made Luxury Standard a perfect step up. An all metal ¼ turn lever style handle replaces the standard (plastic) handle, and 360 degree swiveling neck allows support filling of your glass or pot while it rests on the countertop. This luxury option is available in a wide array of colors from white and black, to antique copper and brass, and even a more distinct natural almond finish. Those looking to match a custom kitchen sink or faucet with an RO spigot may find our vintage and contemporary options most appealing. From the contemporary tulip style Tomli Ultra (starting at: $159.99), to the rustic Waterstone Hampton in an industrial American Bronze finish (our favorite pick, starting at $396.50). Made in the USA, Waterstone delivers the best of the best - made from heavy-duty high-quality material, is California low-lead compliant, and comes with a hard to beat 7-year manufacturer’s warranty.

Starting at $45.25

Refrigerator Connection Kit

For those interested in tasty, crystal clear, purified ice cubes - Home Master’s fridge kit is the answer. A 15’ ¼” line with shut-off valve provides the added convenience of connecting directly to most modern refrigerators with water and ice dispensers. Never ruin a homemade batch of sweet tea, lemonade, or adult beverage again with unpurified contaminated ice cubes made from tap water.

Just $14.50

High Performance, High Hardness Dow Filmtec RO Membrane

The American made Dow Filmtec RO membrane is a high performing, high hardness optional upgrade from Home Master. This high-quality membrane supports better performance through its increased rejection, is rated for 75 gallon per day output (over the standard 50 GPD membrane), and longer life span on high hardness water supplies up to 18gpg. Plus, its similar size and dimension to the 50 GPD membrane ensure a direct fit on any Home Mater RO system.

Just $109.94

Permeate Pump

Home Master's permeate pump upgrade further improves system efficiency, and does not use electricity. By reducing water waste (up to 80%) and increasing water production (up to 50%), your RO system will spend more time producing great-tasting purified water. Furthermore, by equalizing pressure on both sides of the membrane, TDS creep (an issue common with tankless systems) is greatly reduced. Expect about a 1:1 purified to waste water ratio.

Add the permeate pump upgrade to your cart today for about a 1:1 waste to purified water ratio

Just $89.95

Available Anti Microbial Tubing

Upgrade your Home Master® Reverse Osmosis System with Antimicrobial Tubing. Antimicrobial tubing prevents the formation of biofilm and polymer slime that can cause poor taste, odors, and material degradation.

Non-leaching and 100% treated without using silver or triclosan additives. The antimicrobial additive is fully compounded into the tubing to protect both the inner and outer surfaces from degradation, foul odors, microorganisms and discoloration.

Reducing degradation can also reduce maintenance costs and leaks. Please change every 3-5 years with membrane, or as needed.

NSF 51 certified, FDA compliant, EPA Registered Food Safe, no volatile organic compounds (VOCs), heavy metals, arsenic or polychlorinated phenols. Toxicity tests have shown them to cause no irritation or sensitization in skin contact.

Select the Antimicrobial Tubing option when ordering and Antimicrobial Tubing will be pre-installed on your system -- no additional assembly required.

Garbage Disposal Drain Adapter

Home Master's garbage disposal drain adapter upgrade is recommended as the preferred alternative to the standard drain saddle -- ensuring maximized flow rate from the drain line.

Connects 1/4" drain line to garbage disposal drain line.

No drilling.

Customer Reviews

Worth money and effort

Product Review

We've been using the system for almost 2 years. And we're quite satisfied with the quality of the water. Exactly what we needed and expected. I check the water for the presence of TDS and the levels are as promised: 12 PPM. Heavy metals are at bay too. Our fridge water, which is not connected to the filter, is awfully dirty: 200 and higher. We hired someone to install our Reverse Osmosis filter despite lots of reviews say the installation is easy. The cartridges need to be changed every year.

Review by Jena Bechtelar

This is a Great Reverse Osmosis System-Easy to Install

I purchased this system to replace an existing Reverse Osmosis that is the traditional system. It was hard to change out filters and always leaked! I was so impressed with the Home Master Reverse Osmosis system! it was easy to install and no leaking! Water to the faucet comes out twice as fast as the traditional system. I love the fact that it is MADE IN THE USA and installed in less than an hour-I am a home owner and DYI person can do this! Customer service was easy to get a hold of when I had questions about an add on I want to do.

Review by Liza Boehm

The wonderful taste of the water

I live in a small town with bad-tasting water. My son bought one of these systems and I was going there almost
Daily getting gallon jugs of his water. I decided it was time, I had one for myself. My son installed the system.

My cat even drinks more water now.

Review by Toby Scott

Healthiest drinking water you can get in your home. Better than bottled

We live in Florida in a rental house and the drinking water has so much chlorine that it burns your nostrils just at the smell of it coming out of the tap. Definitely not drinkable in my opinion. My husband bought this unit based on a similar product we had in NY we had sulfur-tasting water for. Took my husband about an hour to install and unless your a certified plum pier or really handy I recommend a professional install for this unit. My husband is plumber certified so it was simple for him to install. There is no trace of chlorine smell or taste in the water out of this tap it is amazing. We use this water for our dogs as well since the regular tap water killed one of my dogs. Apparently even a ton of chlorine does kill parasites in the water but actually makes some of them thrive. Had this filtered water tested before we drank it to make sure it was as advertised because I couldn’t go through making anyone in my house sick or another dog die. The sample tested had a clean slate I was shocked at how much this filter purified. I use this filter for everything, making ice, water for cooking and watering my plants. If they made one big enough to attach to my hot water heater I’d buy one in a second. We use it so much we purchased extra filters because we know we are using it more than was intended but well worth the price to help keep people and puppies healthy.

Review by Julia Fleming

Best RO filter for the price

This is the 4th unit I've owned (left the others behind in previous houses.) I purchased another brand at my last house - failed after 3 months. I went back to the Home Master and will always be a loyal customer!

Review by Judy Garrison

Great System, Highly Recommended!

We love our filter system. Fits well under the sink and discards less water than others at the same price point. Filter replacement is simple and easy plus the filters are reasonably priced. Highly recommended!

Review by Mary

Terrific RO Unit

This product is easy to install and works beautifully. The flavor is neutral water which is what you want. Water pressure is excellent and the large storage tank means lots of water when you need it.

Review by Jack

Great taste

1. Fast delivery
2. Very simple to install... Fantastic step by step company video on YouTube..
3. Great customer service very informative..
I have a thick quartz countertop so I needed a 3-in extension, called company they shipped me the extension free of charge next day ... No questions asked
4. Most important great tasting water... Tap water in Southern California is not the best this is a game changer for anybody with yuck water
5. Fills a 32oz cup in less than 3 seconds

Review by Brian Keller

A Good Essential system

I have used an undersink RO system for 20 years to filter out the bad stuff. Over time prices have come down and installations have become simpler. This system has a great balance of low price vs. ease of filter changes, which in more expensive types is very simple but higher cost.

Review by Francisco Burke

Installed it myself. Works great. Awesome RO water.

I watched an install video while doing the install, it really simplified the install.

Review by Mike