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Ships within 48 hours · Estimated delivery Oct 20 - Oct 25
1/15 horsepower rating
Snap Action Reliability: Mechanical snap action switch prevents "chattering" and arcing
while the 5A electrical rating ensures compatibility with standard control circuits
making it a drop-in solution for Lennox and other major OEM equipment
Smith Cyclone Xi
Carrier 330539-757 Coupling Box 320788-703 1/15 horsepower ratingThe Carrier 330539 757 Coupling Box is a critical OEM replacement component designed for 40 inch tall condensing gas furnaces. This genuine furnace coupling box kit replaces older ICP part numbers, including 320721 768, ensuring a precise fit and restoring the factory standard seal on the secondary heat exchanger. For technicians working on Carrier, Bryant, or Payne furnaces, this kit is essential when addressing common moisture or combustion air
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