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  2. How Much Does It Cost to Replace a Water Heater? - AOL

    www.aol.com/much-does-cost-replace-water...

    Permits for a hot water heater replacement usually cost between $25 and $300, depending on the extent of the work and your local laws. Permits for connecting your home to natural gas before the ...

  3. Ringback number - Wikipedia

    en.wikipedia.org/wiki/Ringback_number

    The test consists of calling a reverting calling telephone number (ringback number) or a vertical service code with a standard telephone. Upon answering the call, the exchange plays a unique signal tone as a signal for the installer to hangup the telephone. The exchange then places a reverting call to the originating line, causing the telephone ...

  4. Lineman's handset - Wikipedia

    en.wikipedia.org/wiki/Lineman's_handset

    A typical lineman's handset integrates an earpiece, a mouthpiece, a dialing interface, and a set of test leads for connecting to the telephone circuit. Originally, lineman's handsets featured a rotary dial , but modern sets use some variant of the standard 12-button DTMF keypad and also employ an amplifier for speaker use.

  5. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    A tempering valve mixes enough cold water with the hot water from the heater to keep the outgoing water temperature fixed at a more moderate temperature, often set to 50 °C (122 °F). Without a tempering valve, reduction of the water heater's setpoint temperature is the most direct way to reduce scalding.

  6. The best Cyber Monday appliance deals at Home Depot ... - AOL

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    Select appliances are up to 40% off through Monday at Home Depot. Each comes with free delivery and install, which you absolutely cannot beat.

  7. Network interface device - Wikipedia

    en.wikipedia.org/wiki/Network_interface_device

    Accessing the test jack disconnects the customer premises wiring from the public switched telephone network and allows the customer to plug a "known good" telephone into the jack to isolate trouble. If the telephone works at the test jack, the problem is the customer's wiring, and the customer is responsible for repair.

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