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4-Gallon Vertical Well Pressure Tank

Ratings & Reviews for APEC Water 4-Gallon Vertical Well Pressure Tank

4.6
136
Review
 4.6 out of 5
136 Reviews


95% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The APEC water storage tank is reported to be easy to install and set up, helping to restore proper water pressure and flow to reverse osmosis (RO) systems, especially after an old tank fails. The tank is described as well-made and durable, with many customers reporting long lifespans of 5-8 years or more. While a few customers received damaged or defective tanks, most were satisfied with the product quality and value.

Customer review summary generated by AI, including incentivized reviews.
136 Customer Reviews

I need it yesterday

Would Not Recommend

never got delivered and it is labeled with correct address maybe driver is new but I want my money back or new tank asap

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Response from APEC WATER SYSTEMS

Hello Jay,

We’re sorry to hear about the delivery issue. Since the order was placed through Lowe’s, we kindly ask that you contact Lowe’s...

APEC WATER SYSTEMSMay 8, 2026

APECWATERSYSTEMS

Not as complete as the last time I purchased it.

The tank came - no instructions on how to exchange the tank - no teflon tape. This used to be part of the package. A little disappointing.

April 30, 2026

From www.apecwater.com

Heavy, no handles, and it

Heavy, no handles, and it keeps failing! Why is it so hard to design a tank that doesn't fail in few years?

April 15, 2026

From www.apecwater.com

Solved the pressure issue, but leaks at top!

I suggest that before shipment of this tank, APEC makes sure to include a washer/gasket for the water outlet fitting at the top of the tank. Once I received this tank, disconnected the old/original tank and reconnected the white plastic valve fitting to the threaded nipple at the top of the new tank, water immediately began leaking down the sides of the tank! I carefully tried tightening the fitting (not wanting to strip the plastic threads) and this helped minimize the leakage; but not stop it ...

March 24, 2026

From www.apecwater.com

A new pressure tank

The new tank is great…!!!. It is so wonderful to have good pressure again for our filter system…. Thank you…

March 19, 2026

From www.apecwater.com

Reliable replacement

Would Recommend

exact replacement keeping a 20 year old system running once again

March 18, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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Bladder Tank Does the Job at a Good Price

Would Recommend

Fit well, comes precharged, no obvious defects

March 10, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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Works the old one just

Works the old one just didn’t have any volume. Got the shutoff valve I was told I needed. Turns out I didn't oh well

March 1, 2026

From www.apecwater.com

This product was very easy to install/replace

Would Recommend

Was the exact size/type I needed and very easy to install/replace.

February 26, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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I really like it and it makes my water taste good

Would Recommend

easy to install and use under my sink and fits well

February 24, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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Great purchase once again. 6

Great purchase once again. 6 years going strong. 💪

February 22, 2026

From www.apecwater.com

Exactly as advertised

Would Recommend

Worked and looked as advertised

February 17, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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Excellent choice for the project !

Would Recommend

Perfect Fit for the project - I am using this in conjunction with an irrigation pump (with a pressure switch) to water my garden.

February 16, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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Tank

A new section in the manual on tank care, removal when full, and replacement .

February 13, 2026

From www.apecwater.com

I’ve written earlier about how

I’ve written earlier about how we love the APEC WATER FILTRATION SYSTEM. It meets an exceeds our expectations for delivering delicious, chemical free water. It is a superlative product, and we couldn’t imagine our life without it.

February 13, 2026

From www.apecwater.com

First tank lasted 10 years

The first 4 gallon tank that I purchased with my under sink water system from Apex has lasted a decade. I noticed that it was losing pressure so I used my air compressor to add some air and so far it is still holding up, but I purchased a second tank so it would be ready to go when my first tank finally gives up the ghost.

January 30, 2026

From www.apecwater.com

RO Filter Tank

Would Recommend

Easy enough to install. Working as expected

January 20, 2026
From 4-Gallon Vertical Well Pressure Tank Verified Purchaser
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