Ozonators for Swimming Pools

Reduce chemical usage and improve water quality with a pool ozonator from UltraPure, Del, Paramount, A&A, and Ozone Joe's. PST Pool Supplies stocks UV and corona discharge (CD) ozone systems for residential and commercial pools from 25,000 to 100,000 gallons, in both 115V and 230V configurations.

Pool ozonators fall into two technology categories: UV ozonators use ultraviolet lamps at 185nm to convert oxygen molecules into ozone — they are quieter and lower-maintenance but produce lower ozone concentrations than CD systems. Corona discharge (CD) ozonators generate ozone by passing air or oxygen through a high-voltage electrical field — they produce higher ozone concentrations and are more suitable for large or heavily loaded pools. The UltraPure BFO3+ UV ozonator (100–277V universal voltage) and BFO3 models (115V and 230V) are compact, wall-mounted UV systems for residential pools, designed for easy installation on any pool plumbing system. The UltraPure UPP25 provides an entry-level UV ozone option for smaller residential pools. The DEL Eclipse CD ozonators (115V/230V, 38W, for 25K–100K gallon pools) are corona discharge units with the DEL Solar Eclipse MVD-XL mixing chamber for maximum ozone contact and dissolution. The QuikPure3 (115V/230V, 25K gallon) offers a compact CD solution. Ozone Joe's systems (30K and 65K gallon models) and the Clear O3 water purifying system round out the selection for pools requiring alternative format ozone delivery. For ozonator replacement parts and consumables, see our ozonator parts collection.

A pool ozonator is one of the highest-return upgrades for an existing pool. Ozone (O₃) oxidizes chloramines, bacteria, algae precursors, and organic contaminants approximately 3,000 times faster than chlorine — and unlike chlorine, ozone leaves no chemical byproducts in the water. In practice, pools with properly sized ozonators operate at chlorine levels of 0.5–1.0 ppm (versus the typical 1–3 ppm target without ozone) while maintaining superior sanitation. When sizing an ozonator, match the system's rated pool capacity to your pool's actual volume — undersizing reduces effectiveness while oversizing only marginally improves water quality. For pools with existing Paramount or Hayward automation systems, verify the ozonator's integration requirements. Voltage must match your equipment pad circuit — most residential applications use 115V, while 230V units are common for larger pools or those with dedicated ozonator circuits.

Shop pool ozonators and upgrade your pool to a lower-chlorine, higher-quality water treatment system.