"Mr. Ruggerio's Neighborhood" is the 27th episode of the HBO original series The Sopranos and the first of the show's third season.
They have been listening to his phone calls for years without hearing anything incriminating, and the recordings made by Pussy Bonpensiero also reveal nothing.
Lipari reports that Tony goes to his basement to talk with his associates, believing the conversations will be masked by the noise of the central air conditioning units.
Once a week the house is empty for long enough for the agents to examine the basement and later install the listening device.
In the second week, their plan is aborted when the house's water heater fails and the basement is flooded.