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  1. How far away from furnace to install a smoke alarm?

    • Hi Irene,
      Smoke alarms should be kept at least 20 feet (6 meters) from any sources of open combustion (furnaces, water heaters, fireplaces, kitchen ranges, etc.). If 20 feet distance is not possible (small room size), place it as far as you can to prevent “unwanted” alarms. However, the above smoke alarm distance recommendation would not apply to high efficiency appliances with a sealed combustion chamber that have a combustion air supplied from exterior. This is because the entire combustion process is completely isolated from the house’s interior and combustion particles cannot affect smoke alarm sensor.

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