iSpringUVF11A UV Ultraviolet Light Water Filter with Smart Flow Control Switch 11W, 110V, 10-INCH

Very high quality and solid metal construction design. Added this to my Apec RO system; it was very easy to install and works very well with the system with all included tubes and fittings easily able to accommodate the water flow rate of the RO system. Had the system installed for two years now with no issue such as leakage etc. I've observed a noticeable improvement in the taste of the water and also noticed that our refillable water bottles stay cleaner and less "funky" for longer periods of time. The flow controlled on/off timer is really nice allowing the UV light to shut off when not in use as to not heat up the water and filter, like in some other systems. Price feels a little bit steep, but might be worth it for such a high quality long lasting product.

This UV filter is well worth the money. The build quality and features are one of the best. The packaging is also something that stands out. Especially the protection of the UV lamp and it’s tube. Both come is a heavy cardboard tube and then inside a foam tube keeping both extremely well protected during shipping. The instillation instructions were sufficient as the install itself is straightforward. I damaged one of the orings during installation so I called customer service and spoke to Nick, he was quick to answer my question and sent a replacement immediately.The UV filter looks amazing mounted to my water filtration system and provides the comfort of knowing my family is drinking clean and safe water. I would buy from iSpring again for its value and excellent customer service.

Product packaging was terrific. All parts promised were in perfect shape. Purchased a couple of after market parts to complete the connections to my existing system; 2 each TT FLEX Stainless Steel Corrugated Water Heater Connector Flexible for Water Heater Water Softener, 1" FIP x 1" FIP, 0.92" ID x 18" Length from Amazon, and additional PVC connections from my local hardware store. Mounted a 2x6x4' to the concrete ceiling of my pump room with Tapcon Blue Screws from Home Depot, then mounted the Ispring UVF55FS to the 2x6x4', made the connections, and then followed Ispring's start-up instructions. My UVF55FS is preceded by a Flotec Pump/Accumulator that is preceded by two 20" 025-075 micron filters. Ten days later I sent a water sample to the water test lab and their report reflected my city well water is POTABLE (ready to drink, clean vegetables with and to cook with. Woo-hoo!

I really appreciate the ease of installation especially for a DIY'er such as my self. I've had a few issues with a couple products but Sean was extremely helpful and I got replacements within days. The products work great and are efficient.

The system is solid. The price was good $280. The technology uses florescent bulbs at ~$80 delivered.The bulbs last about a year. And lets be candid florescent technology is about 80 years old. How hard would it be to have a UVC LED strip (bulb) that would last 5 to 10 years? And though this isn't my thing Technology could monitor the bulb and even it's effectiveness and send an email when it has problems. All of this could be none externally with a new slip in more permanent solution that the ancient expendable tech.Just for reference I put in some bypass valves and unions for easy maintenance.If the technology hadn't improved in the last 10 to 20 years, this would get 5 stars. It is solid - easy to install and it works. It is hard to appreciate how something as simple as a UV bulb in a chamber can be 'old tech' but it is.iSpring - let me know when you upgrade the bulb. I am looking into making one for my needs this winter, it's actually pretty simple.

I bought the UVF55FS for my rainwater system and it's working great! At first, I thought I'd wasted my money because, after completely flushing my entire system, a coliform bacteria test came out positive. It did it again after a second complete flush. I finally realized that bacteria are pretty sticky and some will inevitably remain stuck to the sides of the pipes, even after multiple attempts to wash them out. So I decided to fill the whole system with a strong concentration of chlorine bleach and I let it stand for 3 hours. Then I flushed the entire system out again until all traces of chlorine odor were gone. I continued using the system for washing but not drinking for a few days then retested for bacteria. This time, the test showed ZERO bacteria. I even let the test incubate for a couple extra days to be sure.One thing I'd recommend is NOT waste your money on the version that I did with the flow sensor. I think the flow sensor is a bad idea now that I've had some experience and more time to think about it. For one thing, the flow sensor will not turn the UV lamp on until flow rate rises to 0.66 GPM. So if you use this mode and you run some water at anything less that this rate, the bacteria-contaminated water entering the UV unit can pass right through without being sterilized. Another problem is that even when the lamp turns on, it will take it a while to come up to full intensity, allowing more unsterilized water to pass through. Yet another problem is that the lamp may not last as long if it's continuously cycled on and off. Therefore, I'm leaving mine on 100% of the time and expect to replace it in 1 year.A few corrections for the manual:On page 4, it incorrectly states the maximum water pressure allowed is 43 PSI. Page 3 apparently has the correct spec which is 85 PSI. It's also stated on page 12: 4 PSI min / 85 PSI max.On page 4, it says to make sure the inlet is at the bottom if you mount the unit vertically because they incorrectly say it will slow down water flow. It won't slow the flow regardless of putting the inlet at the top or bottom. The only way their statement could be true is if the bottom port was left open so water could fall out with no back-pressure. When installed in your home's water system, the difference between pressure-tank pressure and the back-pressure is what determines flow rate, not the orientation of the UV unit. Orientation doesn't effect this at all.On page 8, it says "Mode AUTO is highly recommended to protect the UV lamp.". Not true and definitely NOT recommended.On page 9, it says the "system is designed for continuous operation, and frequent switching will reduce ultraviolet radiation and service life." which directly contradicts the statement on page 8. I believe this statement on page 9 is correct and you should ignore the AUTO mode recommendation. Don't even purchase the version with the flow sensor so you won't have an AUTO mode in the first place!Note that if your home experiences a power outage, unless you use some kind of uninterruptable power supply, your UV sterilizer will be off and any bacteria and viruses can then pass into your potable water system when you turn on a faucet. Mine is on solar with battery storage so is much less of a problem but I still may add a UPS for the UV unit.Lastly, I DO highly recommend this unit after seeing the bacteria test results.