KOOLTRONIC Water-to-Heat Exchangers provide uniform cooling in a closed-loop system where a reliable source of clean, cool water is available. The KPHE Series is designed primarily for use in harsh enviornments with cooling requirements in excess of the capabilities of Air-to-Air Heat Exchangers. They are particularly useful in highly contaminated environments that would require very frequent cleaning or changing of ambient air filters, or require frquent cleaning of the Heat Exchanger core. KOOLTONIC Water-to-Air Heat Exchangers can furnish greater cooling capacities than air-to-air models, depending on water temperature and rate of flow. Ambient air is sealed our; heat transfer surfaces remain clean.