Why Your Water Heater Is Making That Popping Noise (And the 5-Minute Fix)
That unsettling popping or rumbling sound from your water heater is almost always caused by sediment buildup on the tank floor, forcing water to bubble through a crusty mineral layer. Flushing the tank takes less than 30 minutes, can restore efficiency by up to 10 to 15%, and extends the life of a water heater that costs $800 to $1,500 to replace.
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