VIQUA UV water treatment systems from an authorized dealer — VT and VH residential UV sterilizers, D4 / E4 / F4, the NSF Class A Pro series, H and K commercial units, and genuine VIQUA replacement lamps, sleeves and ballasts. Free shipping, no sales tax outside Minnesota. Which VIQUA series fits your home, and which lamp fits your unit, are below the products.

VIQUA UV systems by series

VIQUA (formerly Sterilight and Trojan UVMax) is the most widely installed residential UV brand in North America, and every system we sell is genuine and warranty-registered. The lineup is organized by flow and by certification level; the table below is the quick way to find your family.

Series	Flow	Best for	Models
VT / S2Q-PA (point of use)	1–3.5 GPM	One faucet, RV, cabin, lab sink	VT1 · VT4 · S2Q-PA
VH (Home)	5–18 GPM	Whole-house on most wells; compact, lamp-change indicator	VH150 · VH200 · VH200-F10 · VH410 · VH410M (sensor) · VH410-F20
D4 / E4 / F4 (UVMax)	12–36 GPM	Larger homes, the classic UVMax platform	D4 · E4 · F4 · UVMax Integrated Home System
Pro (NSF/ANSI 55 Class A)	10–50 GPM	Wells that have failed a test; health-department compliance; LightWise lamp management	Pro 10 · Pro 20 · Pro 30 · Pro 50
VP (Professional)	24–46 GPM	Light commercial, multi-family	VP600 · VP600M · VP950 · VP950M
H / K (Pro commercial)	45–80 GPM	Commercial and institutional; see commercial UV	H · H+ · K · K+
S-OZ (UV + ozone)	70–200 mg/hr ozone	Odor and taste oxidation alongside disinfection	S2Q-OZ · S8Q-OZ

VIQUA replacement lamps, sleeves and ballasts

VIQUA lamps are rated for 9,000 hours — change them yearly, and replace the quartz sleeve every two years or when it won't clean up. Use the genuine part number for your system; generic lamps can fit the chamber but deliver a lower dose. We stock Pro 10 lamp + sleeve (602854), Pro 20 lamp + sleeve (602855) and the VIQUA ballast controller kit; for VH, D4/E4/F4, VP, H and K lamps and sleeves, call 800-374-2143 with your model and we'll ship the correct part.

New to UV? Start with our UV water filter guide for sizing and pre-treatment requirements.

Viqua Ballast Controller Kit (100-240V)

Viqua Ballast Controller Kit (100-240V) Reviews