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
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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
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
Typically replies within 24 hours
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I still cannot get my replacement…
I still cannot get my replacement filter to work properly after I have followed the steps. I even had a plumber come out and he did not know what to do. So now I cannot use my water filter.
So I did receive an email back from APEC asking me to update them with any questions or concerns. I did not receive information on how to reach out to them nor did I receive a follow up phone call. My 1 star still remains and if I could give zero stars I would.
March 11, 2026
Reply from APEC Water Systems
Dear Heather,
Thank you for sharing your feedback, and we sincerely apologize for the inconvenience you’ve experienced. We always strive to work closely with our customers to resolve any concerns with our products.
According to our records, we reached out to you via email on April 7th with additional details regarding your case. Please review that message and provide any updates so we can continue working toward a resolution.
We truly appreciate your time, effort, and patience in working with us, and we remain committed to ensuring a positive experience with our products. Thank you again for your understanding and for giving us the opportunity to assist you.
Best Regards,
APEC Customer Service
Products are easily found on website
Products are easily found on website. Customer service is helpful. Prices are fair and quality products.
March 13, 2026
Reply from APEC Water Systems
Dear Clayton,
Thank you for taking the time to share your experience with us. We’re delighted to know that everything from browsing to support met your expectations and that you’re pleased with the value and reliability of our products.
Your satisfaction is our priority, and we look forward to continuing to provide trusted solutions for you and your family’s water needs.
Best Regards,
Karen
APEC Customer Service
Fast delivery.
March 13, 2026
Reply from APEC Water Systems
Dear Ken,
Thank you for your feedback. We’re glad to hear your order arrived quickly and met your expectations. Providing prompt service is always a priority, and we appreciate you taking the time to share your experience.
Best Regards,
Karen
APEC Customer Service
Reply from APEC Water Systems
Dear Samir,
Thank you so much for your kind words. We’re delighted to hear that you found our service and product knowledge helpful. Providing excellent support and expertise is always our goal, and your feedback reassures us that 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 package containing the o-rings was…
the package containing the o-rings was never sealed before shipping...therefore i had to re-order,since the o-rings fell out of the package, who knows where.
March 12, 2026
Reply from APEC Water Systems
Dear Steven,
Thank you for sharing your feedback with us. We appreciate you letting us know about the packaging issue and are glad we were able to quickly resolve it by resending the o‑rings. It’s important to us that every order arrives as expected, and your input helps us improve.
We’re pleased to have had the opportunity to assist you and ensure you received what you needed. Your satisfaction means a lot, and we look forward to continuing to provide you with a smooth and reliable experience in the future.
Best Regards,
APEC Customer Service
Filter out of stock for over 6 months
*UPDATE*
Notice how in the reply, the representative glosses over the fact that they have not had filter in stock for over 6 months effectively abandoning support for this product. When I called APEC, I was told it would be in stock the end of April, now here they are claiming the end of May. I bought APEC because I thought they were a reputable brand. Apparently I was wrong.
I own an APEC ROCT-PLUS Portable All-In-One countertop RO unit. The water quality is excellent, but my experience with the company has been poor.
The system uses a proprietary filter, and I'm enrolled in their 6-month recurring delivery. For the past five months, I've received the same weekly email:
"Your upcoming order on APEC WATER has an item that is currently out of stock. We will process your orders once the following item(s) are back in stock — you will not be charged until that point:
APEC RO Replacement Filters for All-in-One Instant Hot Countertop Reverse Osmosis System."
In the meantime, I can "manage my recurring items" via a link that leads nowhere useful.
When I contacted support, the AI chatbot suggested I buy filters for completely different products that I don't own. As a result, my unit has been sitting useless on the counter for months as an expensive decoration.
Extremely disappointing.
April 8, 2026
Unprompted review
Reply from APEC Water Systems
Dear Gorio,
Thank you for sharing your experience with the ROCT-PLUS system. We truly value your feedback and regret the frustration caused by the filter availability and the limitations you encountered with our AI support. While AI helps us provide faster responses, we recognize that in this case it did not deliver the accurate guidance you needed. This is an important opportunity for us to enhance our AI support tools so they can better serve customers in the future.
The replacement filters are scheduled to be restocked on May 22, and your recurring order will be processed promptly once they are available. We sincerely apologize for the inconvenience and appreciate your patience as we work to improve both product availability and the quality of our customer support.
Best Regards,
APEC Customer Service
Quality stuff
Quality stuff, I’ve purchased 5 50 to 100 GPD systems with large 20 gallon head tanks.
March 11, 2026
Reply from APEC Water Systems
Dear Paul,
Thank you so much for your wonderful feedback! We’re delighted to know you’ve chosen several of our systems and are satisfied with their performance. Your continued trust means the world to us, and we look forward to supporting you and your family with all your water needs.
Best Regards,
APEC Customer Service
Both agents I spoke to online did not…
Both agents I spoke to online did not sound very personable.
March 12, 2026
Reply from APEC Water Systems
Dear Frederick,
Thank you for your feedback. We truly value your input and are committed to making every interaction feel welcoming and supportive. Your comments will help us strengthen the way we connect with our customers and ensure a more positive experience moving forward.
Best Regards,
APEC Customer Service
The system sounds like a jack hammer
The system sounds like a jack hammer! APEC couldn’t figure it out. I can’t afford to pay plumber another $200 just to fail again. Help!
March 12, 2026
Reply from APEC Water Systems
Dear Susan,
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
Great customer service after the sale.
March 11, 2026
Reply from APEC Water Systems
Dear Joshua,
Thank you for your kind words! We’re thrilled to know you had a positive experience with our team after your purchase. Providing reliable support beyond the sale is something we truly value, and we’re grateful for the opportunity to continue serving your water filtration needs.
Best Regards,
APEC Customer Service
I am still having a problem with the…
I am still having a problem with the flow of water decreasing
March 11, 2026
Reply from APEC Water Systems
Dear Susan,
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 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,
Karen
APEC Customer Service
Excellent Customer Service
I purchased many items and a couple of them included the 3/8ths 5-TCR-3-8 post filter. One of these filters were leaking on the faucet end of the filter and I couldn't get it to stop. I contacted APEC support and after confirming I connected everything correctly they immediately sent me a replacement filter for no charge. To me that shows that this company holds their customers in high regard and I'll keep buying more units/parts from them.
March 11, 2026
Reply from APEC Water Systems
Dear Valued Customer,
Thank you for sharing your experience! We’re delighted to hear that our team was able to quickly resolve the issue and provide you with a replacement filter at no charge. Your satisfaction is very important to us, and we truly appreciate your continued trust in our products. We look forward to serving you again in the future.
Best Regards,
APEC Customer Service
Fantastic company and good water
Fantastic company. Had the product for just barely over one year which put it out of warranty and I had a problem with an internal leak. Within 15 minutes they were generating a shipping label and sent me an entirely brand new unit with almost no questions asked. I would definitely recommend to anybody and everybody. Also, the water quality is fantastic by the way.
March 13, 2026
Reply from APEC Water Systems
Dear Paul,
Thank you so much for your kind words and recommendation! We’re thrilled to hear that you’re enjoying the water quality and that our team was able to quickly resolve the issue. Providing fast, hassle‑free support is something we take pride in, and we’re glad it made a difference in your experience. We truly appreciate your trust in us and look forward to serving you for many years to come.
Best Regards,
APEC Customer Service
Good communication and follow-up.
March 13, 2026
Reply from APEC Water Systems
Dear Lisa,
Thank you for sharing your experience! We’re glad to know our communication and follow‑up met your expectations. Providing clear updates and attentive support is very important to us, and we appreciate your kind words.
Best Regards,
APEC Customer Service
I’ve installed 10+ Apec RO systems.
I’ve installed 10+ Apec RO systems.
Those were great but the last two, made a lot of trouble to me.
Wrong valve on one and broken valves on the other one caused me delay to deliver the job and much more trips to the customer’s house.
March 13, 2026
Reply from APEC Water Systems
Dear Saeed,
Thank you for sharing your experience and for being a long‑time installer of APEC RO systems. We truly appreciate your continued trust in our products. We sincerely apologize for the inconvenience you encountered with the last two installations. We understand how frustrating delays can be, and we value your feedback as it helps us improve.
We’re glad to have resolved these concerns for you. Please know that we are always here to assist and strive to address any issues as promptly as possible. We’re grateful for your patience and commitment, and we remain dedicated to providing you with reliable products and support.
Best Regards,
APEC Customer Service
Poor customer service
I have had my APEC water filter system for many years. I ordered a filter kit which is required for the system every 6-12 months. They sent me the wrong ultraviolet bulb in the kit for the system. I asked if they could send me the correct bulb and they said the bulb wasn't made anymore. I mean at that point my system is useless without the ultraviolet bulb. I think they should have been able to offer me a new stainless steel cylinder that fits the new bulb as long as I have been a customer. Perhaps a discount on a new system that has an ultraviolet filter, but no they didn't offer any kind of a fix for the situation. I will be buying a new system from a different company.
March 12, 2026
Reply from APEC Water Systems
Dear David,
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 last Friday with additional details regarding your case. Please review that message so we can continue working toward a resolution.
We truly appreciate your time, effort, and patience in working with us, and we remain committed to ensuring a positive experience with our products.
Thank you again for your understanding and for giving us the opportunity to assist you.
Best Regards,
APEC Customer Service
UPGRADE to PHUV75 for better taste
I had a Roes-50,,it sold with house,,I upgraded to a Roes-PHUV75,, 7 filter system,,UV light changed taste,,coffee taste better too
March 12, 2026
Reply from APEC Water Systems
Hello Steven,
Thank you for sharing your feedback. We’re glad to hear that upgrading from the ROES‑50 to the ROES‑PHUV75 has been a good experience for you. It’s great that the UV system improved the taste of your water and even made your coffee taste better.
We value your feedback and are glad to hear the new system is working well for you.
Best regards,
Aisle A.
APEC Customer Service
Great product
Started using apex RO after Western Electric stopped working. Been very pleased with Apex as don’t have to change filters so often. Wished I could change filters myself as plumber charges much more than filters cost!
March 12, 2026
Reply from APEC Water Systems
Hello Martha,
Thank you for sharing your experience with APEC RO. We’re glad to hear you’ve been pleased with the system and that the longer filter life has been convenient for you. We understand your concern about the cost of having a plumber change the filters, and we appreciate your feedback on wanting to do this yourself.
Your comments are valuable, and we’re happy the system is working well for you.
Best regards,
Aisle A.
APEC Customer Service
Great Service
My under sink five stage RO system started leaking after 22 months of use. Called APEC, sent them some picts and proof of purchase and the replacement part was in the mail the next day!
March 11, 2026
Reply from APEC Water Systems
Hello Keith,
Thank you for sharing your experience with your under‑sink RO system. We’re glad we were able to quickly process your request and send out the replacement part the next day. It’s great to know the issue was resolved smoothly.
We appreciate your feedback and are happy the system is back in good working order.
Best regards,
Aisle A.
APEC Customer Service
I am very happy with customer support!
March 11, 2026
Reply from APEC Water Systems
Hello Anna,
Thank you so much for your kind feedback. We’re delighted to hear that you are very happy with our customer support—it truly means a lot to us.
We appreciate your continued trust and look forward to assisting you again whenever needed.
Best regards,
Aisle A.
APEC Customer Service
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