What is Damp Heat Tester? Working Principle & Applications A Damp Heat Tester is a specialized environmental test chamber designed to evaluate how electrical components, materials, and devices perform under combined conditions of elevated temperature and high humidity. By exposing samples to controlled cycles — typically ranging from 40 °C to 95 °C with 85%+ relative humidity — it simulates tropical and harsh moisture-laden environments. This accelerated testing helps identify defects like corrosion, degradation, delamination or insulation failure before products reach the market. With its wide application in electronics, automotive, aerospace, and packaging industries, a Damp Heat Tester is essential for ensuring quality, reliability and prolonged service life under adverse conditions. https://www.prestoenviro.com/blogs/what-is-damp-heat-tester