We are reviewing the Viqua/Sterilight IHS12-D4 as we see here but most of this also applies to the IHS22-E4 and the IHS22-D4 model Ultraviolet Disinfection systems.
So how do these Viqua Minirack Ultraviolet Disinfection systems compare?
Performance - 10/10 A consistent and proven bacteria kill in both lake and well water. Viqua UV's are NSF and WQA certified to ensure their consistent performance.
Capacity - 10/10 The capacity in this case is the UV's ability to kill bacteria which is limited to the flow rate. Since these three models cover up to 25 gpm you just invest in the one whose maximum flow rate is higher than your pumps' flow rate.
Cost to Operate - 9/10 Low 50 Watt power consumption to operate. These replacement lamps, although readily available at a variety of sources, are at the higher end of the price scale for this size UV.
Ease of Installation/use - 9/10 Viqua’s relatively small chamber size and they come fully assembled which makes them very easy to install for do it your selfers. They come with an installation kit as well as easy to follow directions. Like all minirack systems they cannot be installed with the UV chamber configured horizontally so you do need an extra 20” of space above the unit for lamp changes.
Features - 10/10 - These Ultraviolet Disinfection systems have a countdown timer showing the lamp life in days remaining, which is very useful especially for cottage applications, they are straight forward and easy to understand.
Parts Availability - 9/10 Parts are readily available from the manufacturer through any number of distributors. Since this is a non proprietary product parts are readily available from any water treatment dealer or on line.
Longevity - 8/10 The ballasts in these UV's have been somewhat problematic, occasionally lasting only a few years before requiring replacement.
Reliability and Build Quality - 8/10 Due to the number of ballasts having a short life span, customers have been disappointed with them suddenly quitting.
Initial Investment - 8/10 These Viqua minirack UV's are a premium item and are priced accordingly. The replacement filters and lamps are a little on the expensive side. The difference in investment between these 3 models is substantial so be sure to check your flow rate before choosing the best model for your family. They do come with the UV lamp, sleeve and all filters already in the box.
Styling/Aesthetics - 10/10 These Viqua Ultraviolet Disinfection systems are very well built and look great when installed.
Gary the Water Guy Overall Score 90/100 Pros: Low initial investment, very accessible replacement parts, easy DIY install Cons: Some past longevity and reliability issues, high initial and on going consumable cost investments.
So what's the Verdict? I rate these as a good choice for any family that needs a full featured Ultraviolet system that is easy to install and has the space available.