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Ultraviolet light vs Ozone - The true costs The following table illustrates the difference in purchase and running costs of UV sterilisation and ozone treatment based on a typical 25 meter exercise pool (450 m³ volume, 2 hour turnover, high peak bather load).   Item Description - Ozone plant Cost- Ozone Description -UV plant Cost - UV UV SAVING Capital Costs £ £ £ Equipment Ozone generator unit 10,000 Top spec, fully automatic with wipers, strainer, monitor and full controls 23,500   Filters, mixer vessels degasser etc Say, 2x2.4m dia vessels + mixer vessel 22,500 Not required 0 Installation, labour & fittings Extra for ozone plant 7,500 Simple 3 valve bypass system only 4,500   Plantroom space. Footprint area. Overall area required: 2 x vessels - 15 m², ozone generator 6 m², mixer pumps and pipework 5 m² 13,000 Equipment footprint = 1.7x0.6 m, allow 3.5 by 1.1 meters for full access 1,925 Safety detector Ozone detector - ozone very poisonous, 0.1 PPM maximum safe level 2,000 No health risks associated with UV     Total Capital Costs 55,000 29,925 CAPITAL SAVING 25,075 Operating Costs           Power Typical consumption inc pumps 10kW 2,700 2.2 kVA 600 Annual maintenance costs inc spares Typical annual contract costs, inc dielectric tubes from major supplier 5,500 Service contract inc lamp replacement as required, seals and labour 2,750   Ozone detector recalibration 500 n/a 0 Filter vessels Epoxy lining £15,000 every five years 3,000 n/a     Filter vessels Carbon replacement, £4,000 every five years 800 n/a Chemical savings Deozonisation carbon removes free chlorine - extra chemical use 1,000       Total operation costs 13,500 3,350 SAVING PER YEAR 10, 150 Please note that only full flow systems of each type are compared. Slipstream or bypass systems, which cannot provide primary disinfection are not considered suitable for professional systems.