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Jn Certified Heating & Cooling, LLC

Registered

Registered. Mechanical Contractor · Registration X0391 · issued in Missouri.

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About this listing

TradePlumbing and HVAC
LocationSt. Louis, MO 63129
TypeCompany

The public record

CredentialRegistered · Mechanical Contractor
NumberX0391
Issued inMissouri
Issuing authoritySt. Louis County, Missouri, Department of Public Works, contractor licensing
Expiry on recordJun 14, 2028
Last confirmedAug 16, 2026

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