Viqua VH200
#4 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
2.4/5
The lowest cost way to add a UV lamp to a filtered well system, with three years of lamps included. Little is published beyond that.
- 12 GPMFlow
- NoNSF/ANSI 55
- MercuryLamp
- 1 yearWarranty
Check price at Amazon$189.99
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- The cheapest unit here, with three lamps and three sleeves in the box
- Alarm sounds if the lamp fails
- 1 in ports
Cons
- No UV dose for the 12 GPM rating
- No published pressure limit; the listing gives only a 50 to 60 psi working pressure
- No UV sensor or shutoff valve, and a 1 year warranty
- Not NSF certified
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its flow. How we rank explains each one.
Specifications
| Model number | GP-UV55W |
|---|---|
| Disinfection | |
| Rated flow | 12 GPM |
| NSF/ANSI 55 | No |
| Lamp | Mercury |
| Lamp power | 55 W |
| Lamp life | 9,000 hours |
| Monitoring | |
| Lamp failure alarm | Yes |
| Build | |
| Chamber | 304 stainless steel |
| Ports | 1 in |
| Voltage | 120 V |
| Warranty | 1 year |
Alternatives in this flow
HQUA TWS-12
#5 in Up to 12 GPMFull review
A compact budget unit for a tight utility room, with cheap lamps. Like other budget units it tells you little about the dose.
Amazon $259.99$259.99
Bluonics 55W UV 12 GPM
#7 in Up to 12 GPMFull review
A low cost backstop for a home well that already has sediment and carbon filters. Good value, but it doesn’t measure what it delivers.
Amazon $199$199
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