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The SOURCE 1 S1-6421649 is a circuit board suitable for single-stage HVAC systems. This board lacks communication features and is marked as version 4.4. It measures three inches in height, eight inches in width, and nine inches in depth, making it compact for installation in tight spaces.
The SOURCE 1 S1-6421649 serves key control functions within its system, ensuring reliable operation.
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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