The Viqua VH410M is the better UV water purifier overall, rated 3.0 to 2.6. The Viqua VH410M leads on monitoring. The Aquasana UV AQ-UV-MF wins on certification. The Viqua VH410M costs $288 less ($1,310 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.
The monitored version of Viqua’s large home unit, for well owners who want to know the dose is actually being delivered. Worth the premium over the plain VH410 if no one checks the water regularly.
Amazon $1,310A certified high flow unit for a large home on treated or tested water that wants an NSF listing. Viqua’s monitored VH410M treats 14 GPM for less if certification doesn’t matter.
Amazon $1,598Each factor is scored 0-100 against the same fixed reference points for every over 12 GPM UV water purifier; a clear win is highlighted. How we rank explains each one.
| Factor weight | Viqua VH410M | Aquasana UV AQ-UV-MF |
|---|---|---|
| Overall rating | 3.0/5 | 2.6/5 |
| Value 25% | 43 $93.57 per GPM ($1,310, 14 GPM at 40 mJ/cm²) | 33 $122.92 per GPM ($1,598, 13 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% | 100 UV intensity sensor, lamp failure alarm, shutoff valve, 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 |
| Viqua VH410M | Aquasana UV AQ-UV-MF | |
|---|---|---|
| Disinfection | ||
| Rated flow | 14 GPM at 40 mJ/cm² | 13 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | No | Class B |
| Lamp | Mercury | Mercury |
| Lamp power | 46 W | 45 W |
| Lamp life | 9,000 hours | 9,000 hours |
| Monitoring | ||
| UV intensity sensor | Yes | No |
| Lamp failure alarm | Yes | Yes |
| Lamp change countdown | Yes | Yes |
| Shutoff valve | Yes | 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 |
