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Bestseller 10% OFF
NU Aqua Platinum 100GPD RO System

Most Affordable

Alkaline & UV Filters available

Pump option available
Bestseller 10% OFF
Countertop Reverse Osmosis Systems

Dispenses Hot & Ambient

Zero Installation

Digital Display with Filter Reminders
10% OFF
Tankless Reverse Osmosis System

High efficiency

Alkaline & UV Filters available

Filter Replacement Reminders
10% OFF
Reef Series 4 Stage 75 GPD RODI - RO System

Consistent 0 TDS

Includes Faucet & Hose Adapter

Premium Deionization Media
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Reverse Osmosis Systems
NUAqua Platinum Series 100GPD RO Systems
Tankless Reverse Osmosis System
Countertop Reverse Osmosis Systems
Reef Series 4 Stage 75 GPD RODI - RO System

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Inline Refrigerator Filters

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Reverse Osmosis Systems
Bestseller 10% OFF
NU Aqua Platinum 100GPD RO System

Most Affordable

Alkaline & UV Filters available

Pump option available
Bestseller 10% OFF
Countertop Reverse Osmosis Systems

Dispenses Hot & Ambient

Zero Installation

Digital Display with Filter Reminders
10% OFF
Tankless Reverse Osmosis System

High efficiency

Alkaline & UV Filters available

Filter Replacement Reminders
10% OFF
Reef Series 4 Stage 75 GPD RODI - RO System

Consistent 0 TDS

Includes Faucet & Hose Adapter

Premium Deionization Media
Shop All Systems
Not sure which fits you best?
Take our quiz 30-second quiz and find your system.
Take Quiz
Water Filters

Under Sink

Countertop Filters

Shower Filters

Inline Refrigerator Filters

Shop All Systems
Whole House Systems
Filter Club
Replacement Filters
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Faucets
Wide choice of faucets to fit your home best.

Fittings
Wide choice of faucets to fit your home best.

Brackets
Wide choice of faucets to fit your home best.

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Wide choice of faucets to fit your home best.

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2 reviews

NU Aqua UV Quartz Tube O-ring

Sale price$4.99

NU Aqua Water Filter System O-Ring Set

No reviews

NU Aqua Water Filter System O-Ring Set

Sale price$9.95

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Reverse Osmosis Water Filter Housing Bracket NU Aqua With Pump Filter Housing Bracket - side angled close up

1 review

NU Aqua With Pump Filter Housing Bracket

Sale price$19.95

Whole Home Water Purifier NU Aqua 3 Stage Whole House Water Filtration System - front of system close up with filters

1 review

OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Sale price$299.97 Regular price$427.95

Whole Home Water Purifier NU Aqua 3 Stage Whole House Water Filtration System - front of system close up with filters

No reviews

OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Sale price$373.97 Regular price$415.95

Whole Home Water Purifier NU Aqua 3 Stage Whole House Water Filtration System - front of system

No reviews

OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Sale price$479.97 Regular price$599.95

Whole Home Water Purifier NU Aqua 3 Stage Whole House Water Filtration System - front of system

No reviews

OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Sale price$359.97 Regular price$599.95

Whole Home Water Purifier NU Aqua 3 Stage Whole House Water Filtration System - front of system

No reviews

OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Sale price$419.97 Regular price$599.95

Whole Home Water Purifier NU Aqua 3 Stage Whole House Water Filtration System - front of system

No reviews

OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Sale price$459.97 Regular price$599.95

Shower Filter NU Aqua Cartridge Main

1 review

Premium Shower Filter Replacement Cartridge (Delivered Every 3 Months)

Sale price$26.95

1 review

QC Union Tee OD1/4'' x NPTF 1/4''

Sale price$5.95

Reverse Osmosis Water Filter NU Aqua Efficiency Series Tankless 600GPD Reverse Osmosis System 2:1 Pure To Waste - front of system next to smart faucet

122 reviews

ROanalyst.com NU Aqua Efficiency Series Tankless 600GPD RO System 2:1

Sale price$460.96 Regular price$574.95

Shower Filter NU Aqua Cartridge Main

No reviews

Shower Filter Replacement Filter Club Subscription

Sale price$26.95

Reverse Osmosis Water Filter Fittings SST Check Valve Quick Connector Elbow - laying flat close up

1 review

SST Check Valve Quick Connector Elbow

Sale price$5.95

Tankless Filter Subscription (Delivered Every 6 Months)

19 reviews

Tankless Filter Subscription (Delivered Every 6 Months)

Sale price$89.02 Regular price$99.95

NU Aqua 3/8" Quick Change High Capacity Inline Replacement Filter - front of filter

No reviews

Undersink 3/8" Quick Change 1 Stage Filter Club Subscription

Sale price$35.96

NU Aqua 3/8" Quick Change High Capacity Inline Replacement Filter - front of filter

No reviews

Undersink 3/8" Quick Change 1 Stage Filter Subscription

Sale price$35.96

1…4 56

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Filters

City Water (9)
Well Water (4)

45PSI+ (4)
Less Than 45PSI (9)

No (9)
Yes (4)

No (9)
Yes (4)

$

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$

Classic RO Platinum Series (11)
Countertop Series (3)
RODI Series (5)
Shower Filters (1)
Tankless Series (7)
Under Sink (2)
Whole house (4)

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We're doing something a little different for the holidays. A lot of our customers have told us that they're worried about making a purchase before our biggest sale of the year...Black Friday. They're afraid that the price might drop a few weeks later.

To help cut down on holiday stress, we've launched our Black Friday Early Access Sale, and backed it with our Black Friday Price Guarantee. Starting with our Black Friday Early Access Sale on 11/1/23, when we put an item on sale before 12/1/23, you'll be getting it at the season's lowest price -- guaranteed. If the price drops on an eligible item, we'll refund you the difference!

Terms and Conditions

Which items are eligible?

Only items showing the "Black Friday Early Access" or "Black Friday Price Guarantee" logos are eligible

What is the Black Friday Price Guarantee?

If item is discounted even more than our Black Friday Early Access price, you will be eligible for a refund equal to the difference between your purchase price and the lowest marked price.

How can I receive my eligible refund?

In order to receive the refund, simply contact us by phone, email or live chat and provide us with your original order number. And we'll take care of it from there! In order to be eligible, you must contact us before 11:59 pm PST on 12/1/23.

How will my refund be received?

The refund will be issued to your original payment method used.

Start your holiday shopping today to make sure you get what you want for the holiday season! All Black Friday sale items have limited quantities and may sell out before Black Friday.

We're doing something a little different for the holidays. A lot of our customers have told us that they're worried about making a purchase before our biggest sale of the year...Black Friday. They're afraid that the price might drop a few weeks later.

To help cut down on holiday stress, we've launched our Black Friday Early Access Sale, and backed it with our Black Friday Price Guarantee. Starting with our Black Friday Early Access Sale on 11/1/23, when we put an item on sale before 12/1/23, you'll be getting it at the season's lowest price -- guaranteed. If the price drops on an eligible item, we'll refund you the difference!

Terms and Conditions

Which items are eligible?

Only items showing the "Black Friday Early Access" or "Black Friday Price Guarantee" logos are eligible

What is the Black Friday Price Guarantee?

If item is discounted even more than our Black Friday Early Access price, you will be eligible for a refund equal to the difference between your purchase price and the lowest marked price.

How can I receive my eligible refund?

In order to receive the refund, simply contact us by phone, email or live chat and provide us with your original order number. And we'll take care of it from there! In order to be eligible, you must contact us before 11:59 pm PST on 12/1/23.

How will my refund be received?

The refund will be issued to your original payment method used.

Start your holiday shopping today to make sure you get what you want for the holiday season! All Black Friday sale items have limited quantities and may sell out before Black Friday.

We're doing something a little different for the holidays. A lot of our customers have told us that they're worried about making a purchase before our biggest sale of the year...Black Friday. They're afraid that the price might drop a few weeks later.

To help cut down on holiday stress, we've launched our Black Friday Early Access Sale, and backed it with our Black Friday Price Guarantee. Starting with our Black Friday Early Access Sale on 11/1/23, when we put an item on sale before 12/1/23, you'll be getting it at the season's lowest price -- guaranteed. If the price drops on an eligible item, we'll refund you the difference!

Terms and Conditions

Which items are eligible?

Only items showing the "Black Friday Early Access" or "Black Friday Price Guarantee" logos are eligible

What is the Black Friday Price Guarantee?

If item is discounted even more than our Black Friday Early Access price, you will be eligible for a refund equal to the difference between your purchase price and the lowest marked price.

How can I receive my eligible refund?

In order to receive the refund, simply contact us by phone, email or live chat and provide us with your original order number. And we'll take care of it from there! In order to be eligible, you must contact us before 11:59 pm PST on 12/1/23.

How will my refund be received?

The refund will be issued to your original payment method used.

Start your holiday shopping today to make sure you get what you want for the holiday season! All Black Friday sale items have limited quantities and may sell out before Black Friday.