Geekpure GP-UV55W 12 GPM
#10 in Up to 12 GPMFull review
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.
Amazon $189.99$189.99
12 GPMNoMercury
2.3/5
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.
- 5 GPM at 40 mJ/cm²Flow
- Class BNSF/ANSI 55
- MercuryLamp
- 3 yearsWarranty
Check price at Amazon$1,598
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- NSF/ANSI 55 Class B certified by NSF itself, which few home units are
- Only 11 in long, so it fits almost anywhere
- Sold and shipped by Amazon
Cons
- Only 5 GPM at the full 40 mJ/cm² dose; the 6 GPM rating is the lower Class B dose
- Costs more than twice what Viqua’s larger VH200 does
- No UV sensor
- Class B covers only water that already tests safe; it isn’t the Class A some lenders ask for
The Aquasana UV SF/MF family
Every Aquasana UV SF/MF model we rank, smallest first. Ratings compare each against its own flow.
| Model | Flow | Rating | Price |
|---|---|---|---|
| Aquasana UV AQ-UV-SF (this one) | 5 GPM at 40 mJ/cm² | 2.3/5 | $1,598 |
| Aquasana UV AQ-UV-MF | 13 GPM at 40 mJ/cm² | 2.6/5 | $1,598 |
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 | AQ-UV-SF |
|---|---|
| Disinfection | |
| Rated flow | 5 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | Class B |
| Lamp | Mercury |
| Lamp power | 28 W |
| Lamp life | 9,000 hours |
| Monitoring | |
| UV intensity sensor | No |
| Lamp failure alarm | Yes |
| Lamp change countdown | Yes |
| Shutoff valve | No |
| Build | |
| Chamber | 304L stainless steel |
| Ports | 1 in |
| Maximum pressure | 100 psi |
| Voltage | 120 V |
| Warranty | 3 years |
Alternatives in this flow
Bluonics 55W UV 12 GPM
#11 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
12 GPMNoMercury
iSpring UVF20 LED
#13 in Up to 12 GPMFull review
A low maintenance LED option for a modest home that already filters its well water. Too little is published to trust it as the only barrier on a contaminated well.
Amazon $309.99$309.99
12 GPMNoLED
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