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Replacement Products for  TH9421C1004/U

Functional Replacements

VisionPRO® 8000 with RedLINK™ technology for residential or commercial use

TH8321R1001/U

VisionPRO® 8000 with RedLINK™ technology for residential or commercial use. Stages up to Up to 3 Heat / 2 Cool.

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Or

Prestige® 2-Wire IAQ Equipment Interface Module

THM5421R1021/U

Prestige® 2-Wire IAQ Equipment Interface Module

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