Aprilaire 80
Steam Canister for Model 800 Humidifier
Currently Out of Stock. Expect 2-3 week delay on back orders.

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The Aprilaire model 80 steam canister, including O-ring, for the model 800 humidifier. This is the heart of the Aprilaire Model 800 Steam Humidifier. Start each heating season with a new canister or when prompted by the "service" light, to keep humidifier running at its best performance.

Replacement Instructions:

  1. Turn off humidifier by the on/off switch.
  2. Allow humidifier to drain until drain LED light stops flashing and disconnect main power to humidifier.
  3. Remove front panel of humidifier and pull wires off the canister.
  4. Loose and slide off hose at the top of canister and slide canister out of the drain.
  5. Remove O-ring from drain assembly and insert new ring using a screw driver.
  6. Insert new canister into the drain assembly with label facing outward.
  7. Slip steam hose and reattach wires on top of canister.
  8. Replace front panel and reconnect electrical power to humidifier.
  9. Turn humidifier on and verify green on/off light is illuminating.

How Electrode Steam Humidifier Works

Electrode steam humidifier operates by energizing two electrode extended into a canister of water. The current flowing between the electrodes and resistance of the water to the electric current heats the water.

Minerals that are naturally found in water cause the water to be electrically conductive. Water conductivity is measured in micro Siemens per centimeter (uS/cm). Generally the higher mineral content the higher the conductivity.

That being said water that is considered “hard”, potable or softened water have a higher conductivity and works well for the humidifier. Low hardness water or less conductive water will take longer to reach capacity. A tea spoon of bicarbonate of soda or salt can be added into the filling cup on start-up to speed up steam production. Demineralized or reversed osmosis water should not be used with electrode steam humidifier.

As water boils into steam minerals are left behind. The remaining mineral will increase the conductivity of the water but also cause deposit onto the submerged portions of the electrodes, rendering those areas ineffective. As this occurs, the water level will rise to expose uncoated eletrode surface. The internal controller senses water level and measures the current flowing between the electrodes to determine when the canister needs replacement.

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