A visible bulge in a washer supply hose can indicate damage to the hose. The line may remain under pressure even while the washer is off. A swollen section, fraying, or moisture at a coupling is worth acting on before the next load.
Take the washer out of use
If you can safely operate the supply valves, close them and leave the washer off until the connection is assessed. Avoid squeezing or straightening the damaged section. If water is escaping and you cannot isolate it at the washer, use the main shutoff if you can do so safely.
Show the technician the full connection
Share photos of both hoses, the valves, and the clearance behind the washer. The installer can check the equipment requirements, route the replacements without tight bends, and check the couplings for leaks when the supply is restored.
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