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
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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
- #9 of 11 best companies in Water Purification Company
- #10 of 12 best companies in Water Filter Supplier
- #1 of 1 best companies in Water Softening Equipment Supplier
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
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 95% of negative reviews
Typically replies within 24 hours
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Excellent service
May 15, 2026
Reply from APEC Water Systems
Dear Etelberto,
Thank you so much for your wonderful feedback! We’re thrilled to hear you had a great experience. 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
Everything was as expected and this is…
Everything was as expected and this is a reliable vendor to shop.
May 13, 2026
Reply from APEC Water Systems
Dear Valued Customer,
Thank you for sharing your feedback! We’re delighted to know everything met your expectations and that you consider us a reliable place to shop. Your trust means a great deal to us, and we look forward to continuing to provide quality products and dependable service.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Kathie,
Thank you for taking the time to share your thoughts. We’re glad to know that our team’s responsiveness and attention to detail made your experience a positive one. Your trust means a great deal to us, and we look forward to continuing to provide dependable support for all your water needs.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Vincent,
Thank you for sharing your feedback. We value all customer input and encourage you to reach out to our support team directly so we can better understand your experience and assist you further.
At your convenience, please contact us at 800-880-4808. Our team is available Monday through Friday from 8 AM to 5 PM Pacific Time, and we are dedicated to providing you with a 5-star customer service experience. We’ll do everything we can to assist you and ensure your concerns are resolved promptly.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Hello George,
Thank you for sharing your feedback. We sincerely apologize for the inconvenience you’ve experienced. We always strive to work closely with our customers to resolve any issues or concerns with our products.
According to our records, we reached out to you via email on May 20 with additional details regarding your case. As of today, we have not yet received a response. We kindly ask that you review that message so we can continue working toward a resolution as quickly as possible.
We appreciate your attention to this matter and look forward to resolving it for you.
Best Regards,
APEC Customer Service
Very frustrating experience …
The people I worked with were friendly and helpful but I had to wait three weeks to get replacement parts. This mean I had the under sink area pulled apart and a mess for that long. New parts leaked though. I bought another new filter set, it also leaked. In the end I ordered so many individual parts it would have been cheaper and faster to buy a whole new system. Very frustrating experience.
May 13, 2026
Reply from APEC Water Systems
Dear Jim,
Thank you for taking the time to share your experience with us. We sincerely apologize for the inconvenience you encountered and truly appreciate the opportunity to assist you. Your feedback is important, and we’re grateful for your patience and trust. Please know that we are committed to providing you with a smoother and more positive experience moving forward, and we look forward to serving you again.
Best Regards,
APEC Customer Service
Perfect fit
May 13, 2026
Reply from APEC Water Systems
Dear Monique,
Thank you for your feedback! We’re so glad to hear the faucet was a perfect fit. Your satisfaction means a lot to us, and we look forward to continuing to provide reliable solutions for your home.
Best Regards,
APEC Customer Service
Crazy AI in charge of customer relations?
My filter was installed in the kitchen and started leaking from the edges. Customer service on the phone immediately told me what photos and information to send, and I did. That is when I started getting AI answers to my email that instructed me to go under the sink twice to provide ever more data, serial numbers, and photos, repeating what I had already provided. And it would not pass me to a human. Crazy. Just crazy. Finally got a human on email and they immediately sent a replacement filter, as they had originally promised. So that part was ok.
May 13, 2026
Reply from APEC Water Systems
Dear David,
Thank you for sharing your feedback with us. We sincerely apologize for the inconvenience you experienced during the support process. While our AI support system is designed to streamline troubleshooting, we understand that it can sometimes feel repetitive, and your input will help us further enhance its knowledge base and improve the overall process.
We’re glad that once your case reached a representative, the issue was promptly resolved with a replacement filter as promised. We truly value your patience and are happy to have been able to resolve this matter. We look forward to serving you with an even better experience in the future.
Best Regards,
APEC Customer Service
to save on shipping
to save on shipping, it was suggested I purchase 2 filters!! good job!!
May 12, 2026
Reply from APEC Water Systems
Dear Bruce,
Thank you so much for your kind words! We’re glad to hear that the suggestion to purchase two filters helped you save on shipping. It’s wonderful to know the process worked out well for you, and we truly appreciate your support. Your satisfaction is always our priority, and we look forward to continuing to provide you with reliable filters for all your water needs.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Constance,
Thank you for sharing your feedback! We’re so pleased to hear that your experience with us was smooth — from placing your order, to finding fair pricing, and receiving your delivery quickly. Providing reliable service and a hassle-free process is something we take pride in, and it’s wonderful to know we met your expectations.
Your satisfaction means a great deal to us, and we truly appreciate your trust in choosing our products.
Best Regards,
APEC Customer Service
Water is very clean and it taste great
Water is very clean and it taste great. No chemicals, it tastes as water should be.
May 12, 2026
Reply from APEC Water Systems
Dear Joumana,
Thank you for sharing your experience! We’re pleased to hear that the ROES-50 system is delivering fresh, pure water that meets your expectations. Your satisfaction is very important to us, and we’re proud to provide a dependable water filtration solution for your home.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Gretchen,
Thank you for sharing your feedback. We’re glad to hear that our team was able to assist you promptly with your account deletion request. We truly value your business and the loyalty you’ve shown to APEC over the years.
Best Regards,
APEC Customer Service
Great product and top shelf support.
May 12, 2026
Reply from APEC Water Systems
Dear Charles,
Thank you for your wonderful feedback! We’re delighted to know that the RO-PH90 system has met your expectations and that our team’s support made a positive difference. Providing both reliable performance and attentive service is always our goal, and it’s rewarding to hear that reflected in your experience. We truly appreciate your trust and look forward to continuing to serve your household’s water needs.
Best Regards,
APEC Customer Service
WEB SITE IS TERRIBLE
WEB SITE IS TERRIBLE. Had to go to another site to find the product (yours) that I needed - Lost discount, and your post offer was so much trouble to apply for it I passed baseman the value of my time.
May 15, 2026
Reply from APEC Water Systems
Dear E.R. Lane,
Thank you for sharing your feedback with us, and we sincerely apologize for the inconvenience you experienced. We understand how important it is to have a smooth and reliable online experience when searching for products and applying offers.
Your feedback is truly valuable, as it helps us improve our website to ensure a better experience in the future. Please don’t hesitate to reach out to our customer support team directly—we’ll be happy to assist you with any product‑related inquiries or concerns.
Best Regards,
APEC Customer Service
Difficult to look for the replacement…
Difficult to look for the replacement parts of APEC water systems because some don’t have a photo of it so we’re not sure the correct one or not. And very difficult to get phone support for help.
May 11, 2026
Reply from APEC Water Systems
Dear Trung,
Thank you for taking the time to share your feedback with us, and we sincerely apologize for the inconvenience you experienced. We understand how important it is to have clear product information and accessible support when looking for replacement parts.
Your concerns are very important to us, and we truly appreciate you bringing them to our attention. Feedback like yours helps us improve our website and customer support so we can provide a smoother, more reliable experience in the future.
Best Regards,
APEC Customer Service
I purchased an APEC Water System
Thank you for your response.
I would like to clarify the issue. When I received the new ROES-50X system, both wrenches were missing from the original package. After I contacted customer support, only one half wrench was sent, while the membrane housing wrench was still missing. This means the issue was not fully resolved the first time, which is why I had to follow up and leave another complaint.
Please confirm that the replacement order now includes the correct missing membrane housing wrench, and provide the tracking number or shipping confirmation once it is available.
Thank you.
May 12, 2026
Reply from APEC Water Systems
Dear Minho,
Thank you for sharing your feedback with us, and we sincerely apologize for the inconvenience you experienced. We truly value the time you took to let us know about your experience, as it helps us improve the support we provide to our customers.
Based on our records, the replacement order for the membrane housing wrench has already been processed. We hope this ensures a smoother experience moving forward, and we remain committed to delivering reliable products along with better support in the future.
Best Regards,
APEC Customer Service
We love our Apec Water filter system!
After a somewhat rough start, the problem was fixed and Apec Systems corrected it. They stand behind their product should be praised for doing so!
Thank you Apec!
May 15, 2026
Reply from APEC Water Systems
Dear Bruce and Sheila,
Thank you so much for your wonderful feedback! We’re thrilled to hear that your experience turned out positively and that you feel confident in your RO-Hi system. 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
Faucet well constructed
Faucet well constructed. This is my second faucet. Only issue, when turning on, stream is split fir a few seconds
May 15, 2026
Reply from APEC Water Systems
Dear Mike,
Thank you for taking the time to share your feedback with us. We truly appreciate your continued support and are glad to know you’ve chosen our faucet again. Your trust means a great deal, and we look forward to serving you with reliable products for many years to come.
Best Regards,
APEC Customer Service
Easy to install
This was an easy first step for my house. At any point if I want to add additional APEC filtration I can.
May 13, 2026
Reply from APEC Water Systems
Dear Wade,
Thank you for your thoughtful feedback! We’re so glad to hear that the 3‑Stage Whole House Filtration System was easy to install and served as a great first step for your home. Your satisfaction and confidence in our products mean a lot to us, and we look forward to supporting your whole house water needs with quality filtration solutions for years to come.
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Jerry,
Thank you for sharing your experience! We’re happy to know that our team was able to provide great service and ensure your defective unit was replaced. Your satisfaction is very important to us, and we’re committed to continuing to deliver reliable products and quality support whenever you need us.
Best Regards,
APEC Customer Service
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