How to Install an Air Conditioner Vent

Written by jonra springs
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How to Install an Air Conditioner Vent
Vented portable air conditioners offer an alternative to window units. (casa popolare image by mastro from

Venting is essential for safely operating a portable air conditioner. Portable units are vented by one or two hoses that are mounted in ports. There are advantages and disadvantages to both one- and two-hose designs. The ports are cut into plastic panels that fit into window frames. The panels fit into standard and sliding windows to accommodate venting without making adaptations to existing wall vents, or cutting holes in the wall to create new ones. Hoses, panels and vents are included in the venting kits for portable units.

Skill level:

Things you need

  • Venting kit
  • Marker
  • Scissors
  • Insulating material
  • Twine or duct tape

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  1. 1

    Place the portable air conditioner in the room as close to the window to be used for venting as possible. Leave the unit unplugged while connecting the venting kit. Put the hose connectors over the exhaust and air intake openings if hose fittings are not a permanent feature over the openings on your unit. Portable air conditioners with only one opening use it for exhaust. Connect the exhaust hose, or intake and exhaust hoses, to the fittings on the portable unit.

  2. 2

    Place the window panel from the venting kit into the window horizontally at the bottom opening of a standard window, or vertically in the opening of a sliding window. Use the slide adjustment to fit the panel if possible. Mark the needed length for the panel with a marker if it is longer than the opening at its shortest adjustment. Cut the panel to the length needed to fit the window frame.

  3. 3

    Place the hose fitting or fittings into the window panel. Attach each hose end to a fitting. Insulate the hoses by wrapping them with insulating material. Secure the insulation with twine or duct tape.

  4. 4

    Put the panel with the hoses attached into the window frame. Close the window over the panel to hold it in place. Plug in the vented portable unit and turn it on to begin cooling.

Tips and warnings

  • Disconnect the air intake hose on dual hose models whenever the outdoor temperature and humidity are very high. Portable air conditioners work better by using indoor air for the intake than hot muggy outdoor air.
  • Disconnect the unit from the electrical source during installation.

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