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How to Install Central A/C in Mobile Homes

Like site-built homes, mobile homes use either window units or central air conditioners. A split-system air conditioner, or central A/C, requires a condenser unit that sits outside the mobile home. The condenser and the interior furnace pump freon in and out of the home while the furnace's A-coil removes the heat from the interior air. The furnace's blower then distributes the A-coil's cold air throughout the home. Central A/C installation in a mobile home is the same as a site-built home, but electricity and space needs require additional attention before installation.

Things You'll Need

  • Central air conditioner
  • Furnace
  • A-coil
  • A/C control box
  • Two- or three-speed blower motor
  • 220-volt exterior power source and outlet
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Instructions

    • 1

      Determine if the mobile home furnace is A/C-compatible and if the mobile home has an exterior 220-volt power outlet. An A/C-compatible furnace must have an A/C control box, an A-coil and a two- or three-speed blower motor, depending on the furnace model.

    • 2

      Mount an A/C control box to your furnace if the existing furnace does not have this feature. Wire the A/C control box to the existing two- or four-wire thermostat. Refer to the installation instructions on the A/C control box, which vary by model. The control box adds a cool option to the thermostat and allows the furnace blower to work without activating the heater.

    • 3

      Upgrade the furnace blower motor to a two- or three-speed model if necessary. A high speed blower distributes the cold air, which is heavier than warm air. Your existing furnace manual will list the speed of the blower motor. Refer to the installation instructions for the new blower motor, which vary by model.

    • 4

      Install an A-coil in your furnace if necessary. An A-coil sits on top of the furnace blower or on the bottom of the furnace unit, depending on the furnace model. If space is a concern, purchase an add-on cabinet for the A-coil. Follow the installation instructions for the add-on cabinet, which vary by model.

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Air Conditioners
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  2. How to Install A/C Into a Brick Wall
  3. How to Install a Rheem Furnace Motor
  4. How to Install A/C Window Brackets
  5. How to Troubleshoot a Mobile Duo Therm Furnace
  6. How to Block A/C Noise
  7. How to Make My A/C Blower Stronger
  8. How to Wire an A/C Fan
  9. How to Fix a Frozen Central A/C
  10. How to Clean an A/C Filter
  11. How to Install an A/C Switch
  12. How to Install an Upflow Furnace

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