The Viqua VH410M is the better UV water purifier overall, rated 3.0 to 2.7. The Viqua VH410M leads on monitoring. The Viqua VP600 costs $80 less ($1,230 vs $1,310).
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 plain high flow Viqua for large homes that don’t need a sensor, at well under the price of the certified PRO units. Add the VP600M if you want monitoring.
Amazon $1,230Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each 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 | Viqua VP600 |
|---|---|---|
| Overall rating | 3.0/5 | 2.7/5 |
| Value 25% | 43 $93.57 per GPM ($1,310, 14 GPM at 40 mJ/cm²) | 55 $68.33 per GPM ($1,230, 18 GPM at 40 mJ/cm²) |
| Certification 20% | 30 not NSF/ANSI 55 certified; flow rated at a stated 40 mJ/cm² dose | 30 not NSF/ANSI 55 certified; flow rated at a stated 40 mJ/cm² dose |
| 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 | Viqua VP600 | |
|---|---|---|
| Disinfection | ||
| Rated flow | 14 GPM at 40 mJ/cm² | 18 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | No | No |
| Lamp | Mercury | Mercury |
| Lamp power | 46 W | 58 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 | 304 stainless steel |
| Ports | 1 in | 1 in |
| Maximum pressure | 125 psi | 125 psi |
| Voltage | 120 V | 120 V |
| Warranty | 3 years | 3 years |
