For a farm, small business or very large home that needs certified Class A treatment at high flow. Most homes are better served by the PRO20 or smaller.
Amazon $5,030
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.
- 14 GPM at 40 mJ/cm²Flow
- NoNSF/ANSI 55
- MercuryLamp
- 3 yearsWarranty
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- A UV sensor reads the actual intensity, so a dirty sleeve or failing lamp shows up before the dose drops unnoticed
- Can drive a shutoff valve that stops water if UV falls too low
- 14 GPM at the full 40 mJ/cm² dose covers a large home
- Shows days left on the lamp and alarms if the lamp fails
- The shutoff valve is an extra purchase
- A genuine S410RL-HO lamp costs about $160 on Amazon every year
- Not NSF certified; only the separate VH410M-V version is, and only to Class B
The Viqua VH family
Every Viqua VH model we rank, smallest first. Ratings compare each against its own flow.
| Model | Flow | Rating | Price |
|---|---|---|---|
| Viqua VH200 | 7 GPM at 40 mJ/cm² | 2.6/5 | $685 |
| Viqua VH410M (this one) | 14 GPM at 40 mJ/cm² | 3.0/5 | $1,310 |
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 | VH410M |
|---|---|
| Disinfection | |
| Rated flow | 14 GPM at 40 mJ/cm² |
| NSF/ANSI 55 | No |
| Lamp | Mercury |
| Lamp power | 46 W |
| Lamp life | 9,000 hours |
| Monitoring | |
| UV intensity sensor | Yes |
| Lamp failure alarm | Yes |
| Lamp change countdown | Yes |
| Shutoff valve | Yes |
| Build | |
| Chamber | 304 stainless steel |
| Ports | 1 in |
| Maximum pressure | 125 psi |
| Voltage | 120 V |
| Warranty | 3 years |
Alternatives in this flow
The certified pick for a large home or a small business on a private well. It costs a lot, but the dose is measured and certified.
Amazon $3,840A large home unit with a published Class A dose flow and a 3 year controller warranty, for less than Viqua’s monitored models. Add a sensor if no one tests the water.
Amazon $1,069.14Compare
Compare the Viqua VH410M with any other UV water purifier →
More from Viqua: every Viqua product ranked.