Viqua VH200
#6 in Up to 12 GPMFull review
A dependable small home or cabin unit from the biggest name in residential UV, with a real controller warranty. Larger homes need the VH410 or a monitored system.
Amazon $685$685
The Viqua VH200 is the better UV water purifier overall, rated 2.6 to 2.3. The Aquasana UV AQ-UV-SF wins on certification. The Viqua VH200 costs $913 less ($685 vs $1,598).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Aquasana UV AQ-UV-SF
#12 in Up to 12 GPMFull review
A certified unit for a small home whose water already tests safe and just wants a second barrier. Too small and too dear for most well homes.
Amazon $1,598$1,598
Which should you buy?
- Choose the Aquasana UV AQ-UV-SF for certification (NSF/ANSI 55 Class B (supplemental only) vs not NSF/ANSI 55 certified; flow rated at a stated 40 mJ/cm² dose).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 12 GPM UV water purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Viqua VH200 | Aquasana UV AQ-UV-SF |
|---|---|---|
| Overall rating | 2.6/5 | 2.3/5 |
| Value 25% | 41 $97.86 per GPM ($685, 7 GPM at 40 mJ/cm²) | 0 $319.60 per GPM ($1,598, 5 GPM at 40 mJ/cm²) |
| Certification 20% | 30 not NSF/ANSI 55 certified; flow rated at a stated 40 mJ/cm² dose | 50 NSF/ANSI 55 Class B (supplemental only) |
| Monitoring 20% | 40 lamp failure alarm, lamp change countdown | 40 lamp failure alarm, lamp change countdown |
| Lamp life 10% | 6 9,000 hour mercury lamp | 6 9,000 hour mercury lamp |
| Warranty 25% | 22 3-year warranty | 22 3-year warranty |
Specifications
| Viqua VH200 | Aquasana UV AQ-UV-SF | |
|---|---|---|
| Disinfection | ||
| Rated flow | 7 GPM at 40 mJ/cm² | 5 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | No | Class B |
| Lamp | Mercury | Mercury |
| Lamp power | 25 W | 28 W |
| Lamp life | 9,000 hours | 9,000 hours |
| Monitoring | ||
| UV intensity sensor | No | No |
| Lamp failure alarm | Yes | Yes |
| Lamp change countdown | Yes | Yes |
| Shutoff valve | No | No |
| Build | ||
| Chamber | 304 stainless steel | 304L stainless steel |
| Ports | 1 in | 1 in |
| Maximum pressure | 125 psi | 100 psi |
| Voltage | 120 V | 120 V |
| Warranty | 3 years | 3 years |