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The Allied Air 49L90 is a furnace air pressure switch. It serves as a replacement for Lennox, Armstrong, Ducane, and Allied furnaces. Compatible with part numbers 49L90, 49L9001, and more, this product ensures reliable operation of your heating system. This ClimaTek replacement part is made in the USA, offering quality and durability.
The Allied Air 49L90 switch is essential for optimizing furnace performance. It is built to meet high standards and ensures safety and efficiency.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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