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Heat, not wiring, is often why LED strips fail early, and aluminum channels help

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A DEV Community author argues that excessive heat is a common but overlooked cause of premature LED strip failure. Lifespan ratings are usually measured at about 25 degrees C in free air, while real installs mounted on wood, in ceilings, or behind diffusers can run at 50-60 degrees, sharply shortening life. Heat also speeds phosphor degradation, which causes dimming and color shift over time. The suggested remedy is an aluminum channel, which improves mounting contact and spreads heat, reportedly lowering strip temperature by 10-15 degrees, with extra measures like silicone bonding and a small air gap recommended for high-power or warm settings. The author notes that a simple touch test after prolonged operation can reveal overheating.

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