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How to Replace an HVAC Swamp Cooler in the Same Space

HVAC (Heating/Ventilation/Air Conditioning) swamp coolers maintain comfortable temperatures inside buildings. Unlike central air coolers, swamp coolers use water to inject humidity into the atmosphere, lowering the temperature. Thus they are best used in climates that have low humidity, such as desert areas. A swamp cooler that has stopped working can be removed and replaced with a new unit in the same space, if needed.

Things You'll Need

  • Screwdriver
  • Plumber's tape
  • Wrench
  • Towel
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Instructions

    • 1

      Turn off the power to the circuit where the swamp cooler is connected at the main circuit breaker. If the swamp cooler isn't hard wired, pull the fan's electrical cord out of the plug to cut the power.

    • 2

      Turn off the water supply going to the swamp cooler. If there isn't a shut-off valve adjacent to the cooler, trace the plumbing back until you find one. Rotate the valve to cut the supply.

    • 3

      Remove the electrical panel on the cooler. Use a screwdriver to loosen the terminal screws on the black, white and green (or bare copper) wires. Pull the wires out of the electrical panel.

    • 4

      Use a wrench to loosen the couplings on the water supply pipe. Hold a towel underneath the coupling as you loosen. A few drops of water may spill out. This is normal.

    • 5

      Loosen any brackets or bolts holding the cooler in place. Pick up the cooler and move it out of the way.

    • 6

      Set the new cooler in the same space. Secure with bolts or brackets as with the previous cooler.

    • 7

      Wrap the water inlet threads with plumber's tape. Reconnect the water supply pipe coupling. Tighten with a wrench.

    • 8

      Remove the electrical panel cover with a screwdriver. Loosen the terminal screws. Connect the black wire to the screw marked "Hot" or "Live", the white wire to the terminal screw marked "neutral" and the bare copper or green wire to the green terminal ground screw. Tighten the terminal screws after attaching the wires. If this cooler comes with a plug instead of being hard-wired, plug the cord into the nearest socket.

    • 9

      Restore the water supply. Turn on the electricity to the cooler circuit.

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