The study explores the combined use of potassium permanganate and ultraviolet light as methods to eliminate ethylene and enhance the post-harvest quality of peaches under both optimal and stressful temperature conditions. It uses KMnO₄ filters and UV lamps to circulate air within cold chambers, promoting ethylene removal. Results showed this combination effectively eliminated ethylene while better preserving firmness, color, soluble solids content, pH, total acidity, and maturity index. Peaches treated at 25°C with this system lasted seven days longer than untreated ones, demonstrating the effectiveness of ethylene removal even under extreme temperatures. This technology, developed in collaboration with “Nuevas Tecnologías Agroalimentarias (KEEPCOOL),” offers an innovative solution for fruit preservation.