The filter casing started to leak for my under sink RO system, so I needed to replace the complete casing, cap & mug assembly. I had to wait long because the parts were back ordered. But once things a... See more
Company replied
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Review summary
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Reviews shaping this summary
Pricing was good and the filter quality appears very good. However, there were no filter to piping adapters included or available for purchase through your website. This would be handy if you are inte... See more
Company replied
Ordering and Delivery were painless. The only reason I didn't rate 5 stars was that some of the John Guest Valves and Tees were not found via search, I had to go elsewhere to find the part number to... See more
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Always appreciate the availability of this item for truly, clean drinking water through a countertop version, which works great with our rental home. The instructions are pretty plain, but I will say... See more
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Company details
Written by the company
#1 US Home Reverse Osmosis & Water Filter Systems | APEC Water. With 25 years of customer support & quality, APEC is the top reverse osmosis home water filtration system. Learn about our home water treatment systems here.
Contact info
1550 Valley Vista Drive, 91765, Diamond Bar, United States
- 8008804808
- support@apecwater.com
- apecwater.com
4.1
Great
783 reviews
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Replied to 95% of negative reviews
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Great website explanations of products
Great website explanations of products, backed up with excellent RO product performance. Easy DIY project and sooooo much better than 5 gal water delivery and/or cases of bottled water
6 June 2025
Reply from APEC Water Systems
Hello Joe,
Thank you for your wonderful feedback. We’re glad to hear that our website explanations made it easy to understand the products and that you’re enjoying the excellent performance of your RO system. It’s great to know the installation was a simple DIY project and that you find it so much better than water delivery or bottled water.
We truly appreciate you sharing your experience.
Best regards,
Aisle A.
APEC Customer Service
Thanks for helping me by sending the…
Thanks for helping me by sending the filters lost in the way Somebody stealed them from the package and you send them to me through an address in the states.
13 April 2026
Reply from APEC Water Systems
Hello,
Thank you for sharing your feedback with us. We’re very sorry to hear that your filters were stolen during shipping, but we’re glad we could help by sending replacements to your U.S. address. We truly appreciate your patience and understanding throughout this process.
Your satisfaction is important to us, and we’re happy to know the issue was resolved.
Best regards,
Aisle A.
APEC Customer Service
Wish we'd have done it sooner
It was very easy to get someone with questions or concerns. Had our whole house no salt water conditioning system for a few weeks now and love it!!!
28 April 2026
Reply from APEC Water Systems
Hello Kim,
Thank you so much for sharing your feedback with us. We’re delighted to hear that you found it easy to get assistance whenever you had questions or concerns. We’re also thrilled that you’ve been enjoying your whole house no-salt water conditioning system over the past few weeks.
Your satisfaction means a lot to us, and we truly appreciate your support.
Best regards,
Aisle A.
APEC Customer Service
really good service
27 April 2026
Reply from APEC Water Systems
Hello,
Thank you so much for your kind feedback. We’re delighted to hear that you experienced really good service from our team. Your satisfaction means a lot to us, and we truly appreciate you taking the time to share your positive experience.
Best regards,
Aisle A.
APEC Customer Service
The representative on the phone was very helpful.
The representative on the phone was extremely helpful and helped me order the part I needed.
27 April 2026
Reply from APEC Water Systems
Hello,
Thank you very much for your kind feedback. We’re delighted to hear that our representative was extremely helpful and assisted you in ordering the part you needed. Providing excellent service and support is always our priority, and we’re glad we could meet your expectations.
We truly appreciate you taking the time to share your experience.
Best regards,
Aisle A.
APEC Customer Service
filters work great
filters work great, but came without being ordered by me. Now I have too many.
27 April 2026
Reply from APEC Water Systems
Hello Robert,
Thank you for your feedback. Based on our records, you had subscribed to a 6-month replacement plan for items FILTER-MAX-ES100 on May 2024 under order number #S-374670 and FI-ROCTC1 on January 2026 under order number #S-512859. Please note that this subscription has already been canceled.
To better address your concern, kindly reach us at 800-880-4808. We’re available Monday to Friday from 8 AM to 5 PM Pacific Time. Our team is dedicated to providing you with a 5-star customer service experience, and we’ll do everything we can to assist you.
Best regards,
Aisle A.
APEC Customer Service
Impressed
I did a lot of research before buying this UC-200 under-sink filter and a separate IL-200 refrigerator filter. In a previous house I had a reverse osmosis system for ~30 years and loved it, except for the maintenance and tremendous waste of water. This APEC system has neither of those issues and the water "tastes" great, in that it has no taste. I wish I installed these systems in my previous house instead of the reverse osmosis system...
27 April 2026
Reply from APEC Water Systems
Hello,
Thank you for your feedback. We’re glad to hear you are enjoying the UC-200 under-sink filter and IL-200 refrigerator filter. It’s great to know the system gives you clean water without the maintenance and that you love the taste.
We appreciate you sharing your experience with us.
Best regards,
Aisle A.
APEC Customer Service
Both filters leaking.
27 April 2026
Reply from APEC Water Systems
Dear Serghei,
Thank you for sharing your feedback with us. We sincerely apologize for the inconvenience you've experienced and are committed to resolving the issue as quickly as possible.
To better understand and address your concern, a support case has been created and a separate email has been sent to you. Please review the email and respond so we can assist you further.
At your earliest convenience, you can also reach us at 800-880-4808. We’re available Monday to Friday from 8 AM to 5 PM Pacific Time. Our team is dedicated to providing you with a 5-star customer service experience, and we’ll do everything we can to assist you.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Julian,
Thank you for your thoughtful feedback! We’re delighted to hear that our team provided you with both knowledgeable guidance and patient support. Delivering attentive and reliable service is always our goal, and your comments let us know we’re on the right track. We truly appreciate your trust and look forward to assisting you again in the future.
Best Regards,
Karen
APEC Customer Service
The reverse osmosis system that was leaking
The reverse osmosis water filtering system I bought the RO-90 after installing had a leak called and then had to communicate by email told them exactly where and what was leaking had to have a picture of components leaking did this went back and forth for over a week said they were sending the parts I told them was leaking ended up sending me a oring that wasn’t the problem after a harsh email took another week to send correct parts when they should of sent me a complete new one to replace the faulty one I’ve bought 5 of these over the years it’s not fun working on these systems in tight areas under the sink you usually put them way back to not take up storage room have been doing research to find me a new company to buy 2 more units I’m fixing to replace
27 April 2026
Reply from APEC Water Systems
Dear Wade,
Thank you for sharing your feedback. We sincerely apologize for the inconvenience you experienced and truly regret that your expectations were not met. Providing excellent service and support is very important to us, and your comments are invaluable in helping us improve.
We want you to know that your feedback has been noted and will be used to enhance our customer support processes. We appreciate your patience and understanding, and we are committed to ensuring a smoother, more positive experience for you moving forward.
Best Regards,
APEC Customer Service
Product packaging & design
When I bought, I thought 3 filters ( stage 1-3) need replacement every 9 months or so. Why bundle 3 filters & why not include stage 6 too ? We need 4 filters replaced. Pls review your product sales & make logical bundles.
Replacing filters isn’t all that easy, would be great to make improvements.
28 April 2026
Reply from APEC Water Systems
Dear Akshaya,
Thank you for sharing your feedback. For added convenience, we offer the Stage 1–3 pre filters together with the Stage 6 remineralization filter for the ROES PH75 as a set, since all of these are recommended to be replaced every 6 to 12 months. You can find the filter set at the link below:
FILTER-SET-ESPH
https://www.apecwater.com/products/apec-pre-filter-set-for-essence-75-gpd-ph-ro-systems-10-stages-1-3-and-6
According to our records, you have recently placed an order for this same filter set. If you need further assistance, please don’t hesitate to reach out to us at 800 880 4808. We’re available Monday to Friday from 8 AM to 5 PM Pacific Time. Our team is committed to resolving any order issues as quickly as possible and ensuring you receive a 5 star customer service experience.
Best Regards,
Karen
APEC Customer Service
Reply from APEC Water Systems
Dear Lonnie,
Thank you for sharing your experience! We’re happy to hear your replacement filters arrived on time. We appreciate your support and look forward to continuing to provide you with dependable water filtration solutions.
Best Regards,
APEC Customer Service
Great products!
27 April 2026
Reply from APEC Water Systems
Dear Joseph,
Thank you for your kind words! We’re delighted to know you’re enjoying our products. Your support means so much to us, and we look forward to continuing to provide you with reliable solutions for all your water filtration needs.
Best Regards,
APEC Customer Service
I got the replacement cartridges pretty…
I got the replacement cartridges pretty quick after ordering them online.
27 April 2026
Reply from APEC Water Systems
Dear Richard,
Thank you for sharing your experience! We’re happy to hear your replacement filters arrived quickly. We appreciate your support and look forward to continuing to provide you with dependable water filtration solutions.
Best Regards,
APEC Customer Service
Items arrived on time and in good…
Items arrived on time and in good condition. The tracking of the item during delivery was easy enough.
Billing was correct
27 April 2026
Reply from APEC Water Systems
Dear James,
Thank you for your feedback! We’re glad to hear your items arrived on time and in good condition. It’s great to know the delivery tracking was straightforward and that billing was accurate. We appreciate your support and look forward to serving you again.
Best Regards,
APEC Customer Service
Shipment arrived quickly
Shipment arrived quickly. Unit was easy to setup and mount. I added a 25 Gallon RO tank. Tank filled quickly and flushed first fill. Subscribed to the 12-month filter refills. Overall, everything was seamless. Haven't had any issues. Thanks Apec
27 April 2026
Reply from APEC Water Systems
Dear Troy,
Thank you for sharing your experience! We’re glad to hear your shipment arrived quickly and that the unit was easy to set up and mount. It’s great to know your 25‑gallon RO tank filled and flushed smoothly, and we appreciate your 12‑month filter subscription. We’re delighted everything has been seamless and that you haven’t encountered any issues.
We look forward to continuing to provide you and your family with reliable products to meet all your water needs.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Tyler,
Thank you so much for your kind words! We’re delighted to hear that you find the reverse osmosis system easy to use and that you’re enjoying the great‑tasting water it provides. Your satisfaction means a lot to us, and we’re grateful for the opportunity to support your water needs.
Best Regards,
APEC Customer Service
Satisfied customer…
When I called technical support the lady I spoke with was knowledgeable and helped me analyze the issue.
ordering the required parts was easy and the installation was simple.
24 April 2026
Reply from APEC Water Systems
Dear Claude,
Thank you for sharing your experience! We’re so glad to hear that our technical support team was able to provide knowledgeable assistance and help you resolve the issue with ease. It’s wonderful to know that ordering the parts was straightforward and installation went smoothly. Your satisfaction is very important to us, and we’re excited to continue supporting you and your family’s water needs.
Best Regards,
APEC Customer Service
Works great not horrible to install
Works great not horrible to install. You should ditch paper instructions and just do an install video with QR code.
24 April 2026
Reply from APEC Water Systems
Dear Alex,
Thank you for sharing your experience! We’re thrilled to hear that your ROES-PH75 system is working great and that installation went smoothly. We truly appreciate your suggestion about using an install video with a QR code — convenience and clarity are always top priorities for us. Your satisfaction means the world to us, and we look forward to continuing to serve you and your family for all your water needs.
Best Regards,
APEC Customer Service
Great product
Great product ! Good to know my family is drinking and cooking with clean water. Auto ship filters is so convenient and reminds me it’s time to change them.
24 April 2026
Reply from APEC Water Systems
Dear Roseann,
Thank you so much for your wonderful feedback! We’re delighted to know that clean, safe water is making a difference for you and your family. It’s great to hear that our filter subscription service adds convenience and peace of mind. Your satisfaction means everything to us, and we look forward to continuing to support your family’s water needs for years to come.
Best Regards,
APEC Customer Service
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