Central whole home humidifiers are an essential part of central heating and cooling systems in North America. Central heating systems make the indoor air very dry especially during cold winter months when temperatures plunge to minus double digits. All central humidifiers need fresh water to operate. Large By-Pass Central Humidifiers like Lennox HCWB-17 Humidifier or Aprilaire 600 Humidifier and Power Humidifiers like Lennox HCWP3-18 Humidifier have water pads which MUST be replaced annually. Some homeowners mistakenly wash their old humidifier water pads with CLR (Calcium Lime Rust) or Vinegar in order to re-use the old water pad. However, washing your existing water pad will remove all of the water absorbing material on the it, preventing the humidifier from working properly. This could also cause some serious health effects by bacterial growth, and could cause damage to your heating and cooling equipment. Steam Humidifiers have Canisters or Cylinders which must be replaced a
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