A Guide to HVAC Units for the Amateur

When our family first moved into our home five years ago, the central heating and air unit were brand new. We never considered that there would be a time when it would not be operating as we wanted it to. When the time to buy a new unit came, we found that the available options were more diverse than we thought. It was all too confusing. After researching the different options, I decided to create this blog. My hope is that others who are faced with this decision can find easy-to-understand information that can aid in quickly making an informed decision.

Replacing That Old Garbage Disposal Unit

Construction & Contractors Blog

It takes longer to get food scraps down the old garbage disposal unit and it's getting noisier while trying to do its job. If you replace your disposer with the same model, this is a DIY project that you can get done in a couple of hours. With a few simple tools, you'll soon have a quieter, more effective garbage disposal unit that you can count on for a number of years.

Tools and Supplies You'll Need

  • flat-blade screwdriver
  • Phillips screwdriver
  • channel lock pliers or small pipe wrench
  • wire cutters and strippers
  • wire nuts
  • small bucket
  • old rags for cleanup

From the plumbing supplies store:

  • new garbage disposal unit that matches the old make and model

Removing the Old Unit

  1. Turn the power off to the outlet into which the garbage disposal unit is plugged.
  2. Turn the water off to the sink with the shutoff valves under the sink.
  3. Unplug the unit from the outlet under the sink.
  4. If present, remove the dishwasher drain hose from the side of the garage disposer by loosening the pipe clamp and slipping off the hose.
  5. Place the bucket under the unit to catch any water from the drain.
  6. Loosen the large nut holding the drain pipe to the outlet on the side of the garbage disposer and slide the pipe off.
  7. While pushing the garbage disposer up slightly, turn the mounting ring on the top of the unit that secures it onto the sink until the unit comes off.
  8. Place the old garbage disposer upside down on the floor or counter.
  9. Remove the metal or plastic plate that covers the electrical wires going into the unit.
  10. Unscrew the green screw and remove the ground wire from the unit.
  11. Cut the black and white wires to free the electrical plug from the unit.
  12. Set the plug aside to use with the new unit.
  13. Place the old garbage disposal unit out of the way.

Installing the New Garbage Disposer

  1. If the old unit was connected to the dishwasher, knock the plug out of the dishwasher drain outlet on the side of the new garbage disposal unit with a screwdriver and hammer.
  2. Remove the small plastic plug from within the unit.
  3. Turn the new unit over to get access to the cover for the electrical wires.
  4. Pull out the black and white wires and strip the ends about a half an inch, if not already bare.
  5. Connect the green wire from the electrical plug to the green screw in the wiring compartment on the new unit.
  6. Twist together the black wire from the electrical plug to the black wire coming out of the unit and secure with a wire nut.
  7. Repeat with the white wires.
  8. Push the wires into the new unit and replace the cover.
  9. Turn the unit over.
  10. Place the drain outlet pipe into the side of the new unit and secure with the bolts included.
  11. Whole holding the new unit up to the mounting flange on the sink, place the mounting ring on the unit into the mounting flange and turn it until you feel it click into place.
  12. Turn the new unit so the drain outlet points toward the drain under the sink.
  13. Attach the dishwasher drain hose, if used, onto the drain on the side of the new unit and secure with the pipe clamp.
  14. Reconnect the plumbing from the drain under the sink to the drain pipe on the new unit.
  15. Plug the new unit into the electrical outlet.
  16. Turn the water on under the sink.
  17. Test the sink and drain for leaks.

For more information, contact companies like Central Plumbing Specialties. 


29 December 2015