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
- #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
781 reviews
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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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Quality products
Quality products. Just like a chevy truck, solid build do what they're supposed to.
May 13, 2026
Reply from APEC Water Systems
Dear Brett,
Thank you so much for your wonderful feedback! We’re thrilled to hear you had a great experience with our products. Just like a Chevy truck, we strive to deliver a solid build that does exactly what it’s supposed to. 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
I ordered replacement filters and…
I ordered replacement filters and membrane for my system. There are no directions on how to replace them.
May 13, 2026
Reply from APEC Water Systems
Dear Terese,
Thank you for sharing your feedback! We truly appreciate you bringing this to our attention. The filter replacement instructions are included in your system’s owner’s manual, which provides step-by-step guidance. For added convenience, we also have a general tutorial video available that walks through the filter replacement process. Kindly visit the link below:
https://www.youtube.com/watch?v=9K6BwmyynUA
Best Regards,
APEC Customer Service
Reply from APEC Water Systems
Dear Shekh Uddin,
Thank you so much for your kind words! We’re delighted to hear that Jackson has been supportive and caring throughout your experience. We’ll be sure to share your appreciation with him — feedback like yours inspires us to continue providing the best service possible.
Best Regards,
APEC Customer Service
I have the high output fast flow system…
I have the high output fast flow system with a 14 gallon tank, and it works great! I have used it for several years with no leaks, and changing the filters is a simple process.
May 13, 2026
Reply from APEC Water Systems
Dear Ron,
Thank you so much for your wonderful feedback! We’re thrilled to hear that your RO-Hi system with the 14-gallon tank has been serving you reliably for several years. It’s great to know you’ve had no leaks and that filter changes have been simple and hassle-free. Your satisfaction means the world to us, and we’re honored to provide your family with clean, refreshing water. We look forward to continuing to serve you for many more years to come!
Best Regards,
APEC Customer Service
Honest and easy to deal with.
May 12, 2026
Reply from APEC Water Systems
Dear Thomas,
Thank you for your kind words! We’re delighted to hear that you found our team honest and easy to work with. Providing a smooth and trustworthy experience is always our goal, and your feedback means a lot to us. We look forward to serving you again in the future!
Best Regards,
APEC Customer Service
The unit had a leak in the connection…
The unit had a leak in the connection between the sediment filter and the first carbon filter. You quickly sent a replacement which was much appreciated.
May 13, 2026
Reply from APEC Water Systems
Dear Richard,
Thank you for your kind feedback! We’re sorry to hear about the initial leak, but we’re thrilled that we could quickly provide a replacement and get everything resolved for you. Your satisfaction means so much to us, and we’re grateful for the opportunity to serve you. We look forward to continuing to provide your family with clean, healthy water for years to come.
Best Regards,
APEC Customer Service
Quality control doesn't seem important
Quality control doesn't seem important. It took dealing with AI twice and 2 phone calls to finally get somewhat of an answer but no apology for having had the filter system go out the door with the manifold being in backwards only to tell us we could use it that way or we could unscrew the 3 lids from metal and reverse it but doesn't matter if backwards. Never explained then why it has arrows going one direction.
May 11, 2026
Reply from APEC Water Systems
Dear Barbara,
Thank you for taking the time to share your feedback. We sincerely apologize for the inconvenience you experienced with your filter system and the challenges you faced in getting clear answers. We understand how frustrating this must have been, and we truly value your input.
Your comments are important to us, and we will be reviewing our quality control measures to ensure that issues like this do not happen again. Our goal is to provide products and support that meet the highest standards, and your feedback helps us improve.
We appreciate your patience and the opportunity to serve you, and we remain committed to delivering a better experience moving forward.
Best Regards,
APEC Customer Service
Tank malfunction
Tank malfunction - and APEC came through w a replacement. Thanks to the kind, patient person named Sal. Thx again!
May 13, 2026
Reply from APEC Water Systems
Dear Scott,
Thank you so much for your wonderful feedback! We’re delighted to hear that Sal was able to assist you with patience and kindness, and that your tank replacement came through smoothly. 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
Reply from APEC Water Systems
Dear Valued Customer,
Thank you for your kind words! We’re thrilled to know that you had a great experience with our customer service team. Providing courteous and helpful support is something we take pride in, and your feedback reassures us that we’re on the right track. We truly appreciate you taking the time to share your experience and look forward to continuing to serve you.
Best Regards,
APEC Customer Service
New parts were sent to correct the…
New parts were sent to correct the cracked parts of the R/O system and the personell were very courteous that helped me. Thank you
May 12, 2026
Reply from APEC Water Systems
Dear Ronald,
Thank you for sharing your experience! We’re happy to hear that the replacement cap set arrived promptly and that our team was able to assist you with courtesy and care. Your feedback means a lot to us, and we’re glad we could help resolve the issue quickly. We remain committed to providing reliable products and attentive support to ensure your satisfaction.
Best Regards,
APEC Customer Service
Ordered one tank
Ordered one tank, got two delivered. Was told to send the extra one to Texas at my expense. Argued for 3 days to finally get them to not charge me for the one I didn't want or need. Will never deal with those idiots again!!!
May 12, 2026
Reply from APEC Water Systems
Dear Joe,
Thank you for sharing your feedback. According to our records, an order was placed for two replacement 4‑gallon tanks on our website. Since all online orders are selected and submitted directly by customers, we encourage reviewing the Order Confirmation email that is automatically sent after each purchase to ensure accuracy in quantity and details.
We’re glad we were able to provide a courtesy refund for one of the tanks without requiring a return. We hope this helps clarify the matter, and we truly appreciate the opportunity to assist you.
Best Regards,
APEC Customer Service
Jackson was most excellent with support…
Jackson was most excellent with support expediting the recovery process. It restored my faith in the APEC product.
May 11, 2026
Reply from APEC Water Systems
Dear Justin,
Thank you for sharing your experience. We’re pleased to hear that Jackson provided outstanding support and was able to expedite the resolution of your concern. It’s great to know his assistance helped restore your confidence in us. Your feedback is truly appreciated, and we remain committed to delivering the same level of care and reliability to all our customers.
Best Regards,
APEC Customer Service
easy to use, fast set up, safe drinking water
Municipalities put all kinds of questionable substances in water. Do you trust them with your health? It's not worth the risk. This product is easy to set up and reasonably priced.
May 11, 2026
Reply from APEC Water Systems
Dear Antonio,
Thank you for your feedback! We’re glad to hear you’re satisfied with the ROTL‑600‑PH system. It’s designed to deliver dependable performance, and we appreciate you highlighting its value. Your input means a lot to us, and we’ll continue working hard to provide reliable solutions that help ensure clean, refreshing water for your home.
Best Regards,
APEC Customer Service
Purchased $250 reverse osmosis system
Purchased $250 reverse osmosis system, 1.5 yrs later, after replacing filters & uv bulb, power supply went bad. Gentleman sent me a link to order, $49 part. Ok fine, then they tacked on a $29 delivery fee, completely ridiculous
May 11, 2026
Reply from APEC Water Systems
Dear Sophia,
Thank you for taking the time to share your feedback. We truly appreciate hearing about your experience. Based on our records, the UV transformer you purchased is priced at $41.95. Please note that we offer free shipping on orders of $49 or more, which helps many customers save on delivery costs.
Your input is valuable, and we’ll continue working to make the process as smooth and transparent as possible.
Best Regards,
APEC Customer Service
Great filter system
Hi
Did good on delivering new filters working great water is amazing
May 11, 2026
Reply from APEC Water Systems
Dear Richard,
Thank you for sharing your experience! We’re delighted to hear that your ROES‑PHUV75 replacement filters arrived quickly and are working well, providing you with great‑tasting water. Your satisfaction means a lot to us, and we truly appreciate your support.
We look forward to continuing to provide you with dependable products and service for all your water needs.
Best Regards,
APEC Customer Service
Seemingly decent products, Yet Customer Service leaves MUCH to be desired!
While it appears that ApecWater has good water filtration systems, I unfortunately did not have the opportunity to try one of their products yet. I originally placed an order for their [ ROES-PH75 - Essence Alkaline Mineral 6-Stage 75 GPD Reverse Osmosis Water System ], back on May 11th, yet didn't immediately recognize that the product required drilling a hole in the counter-top, not to mention the space it would need for the tank itself. That said, I called to cancel my order several hours later, and was told by ApecWater that my order couldn't be cancelled because it was already being processed for shipping (despite the fact it likely hadn't even left the warehouse until after that date). Needless to say, I had to wait until it arrived before I could send it back. Once I received it, I immediately contacted ApecWater to initiate my return, whereupon I was informed that I would have to cover the cost to ship it back. Not only that, I first had to take photos of the top and bottom of the package itself, then upload those before ApecWater would even approve my return and subsequently issue me an RMA number. The most frustrating part of all is the time, gas and energy I had to waste in driving to the US Post Office, and then to a UPS in order to find my cheapest option to ship this package back, which was the USPS at $87. Yet since I couldn't cover that cost right away, I had to wait a few days, and when all was said and done, I decided to send it via UPS instead because the US Post Office wanted to rip the original Apec UPC bar code off the box, and since I already had to take photos of the stinking thing before I could even be approved to send it back, I declined going with USPS, God forbid, Apec saw the barcode missing and decided not to issue my refund. All the same, this was a completely frustrating experience, that, as far as I'm concerned, could all have been avoided if ApecWater would've simply provided me a Return Shipping Label from UPS in the first place. It's even more frustrating also because they already use UPS to ship their products out, which means they already have an account with UPS for shipping and could've very easily created a Return Shipping Label, so that I could send their unopened product back to them without all this hassle. IMHO, ApecWater should make adjustments to it's return policy when it comes to packages that haven't been opened and/or used. For example, offering to cover return shipping in such cases, by providing customers with a return shipping label, even if the shipping cost gets deducted from the refund to the customer when its finally processed. That would still be a better policy overall, especially since ApecWater provides a short window of time in order to ship the product back. The company already has full control over the return until it's processed, so, it's not like they would lose money by covering the return shipping label, when they could easily get it back as soon as they go to process a customers return. Honestly, I was considering some of ApecWater's other products, after realizing I couldn't use the one I sent back, but after having to endure such a rigmarole in simply attempting to return the product I couldn't use and didn't open, I don't know if I ever want to do business with this company again. Like I said, ApecWater appears to have good quality products, but when a reasonable level of customer service is lacking in these types of circumstances, it just leaves a real sour taste in one's mouth, that, I don't think any water filter (no matter how good they claim to be), could eliminate.
May 11, 2026
Reply from APEC Water Systems
Dear Valued Customer,
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, one of our customer service representatives is already assisting you with your concern. We encourage you to continue working with them, as they are best positioned to provide the support and resolution you need.
We truly appreciate your time, effort, and patience in working with us. Thank you for your understanding and for giving us the opportunity to assist you.
Best Regards,
APEC Customer Service
The filters came promptly….
The filters came promptly….. no long wait. We are happy with the system we have installed.
May 11, 2026
Reply from APEC Water Systems
Dear Laurence,
Thank you for your feedback! We’re delighted to hear that your ROES‑PH75 replacement filters arrived promptly and that you’re happy with the system. Your satisfaction means a lot to us, and we truly appreciate your support.
We look forward to continuing to provide you with reliable products for all your water needs.
Best Regards,
APEC Customer Service
Outstanding product and tech support team…
The company has the best tech support group. I sent them an email and they responded late at night with a set of instructions to fix the problem. We tried several things over a few days. Their tech support group seemed to be available at any time. We figured out what the problem was and they sent me the parts to fix it. Everything worked and we are completely satisfied.
I have been in the customer service business as a tech, a manager, and and an owner of a computer network support group for the past 50 years. I rate this group as one of the best and responsive tech support teams I have ever come across.
May 11, 2026
Reply from APEC Water Systems
Dear Paul,
Thank you so much for your wonderful feedback! We’re thrilled to hear that our customer support team was able to assist you promptly and effectively, and that the issue was resolved to your satisfaction. Your kind words mean the world to us, especially coming from someone with decades of experience in customer service.
We’re honored to be rated among the best and most responsive support teams you’ve encountered, and we look forward to continuing to serve you and your family for all your water needs.
Best Regards,
APEC Customer Service
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
June 6, 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.
April 13, 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
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