Description
The First Company 9-320-3501 is an OEM hot water (HW) heating coil engineered specifically for use with First Company’s 18 and 24 series VAQ vertical air handler units. Designed as a direct-fit replacement, this coil restores full hydronic heating performance to your fan coil system with confidence.
Product Overview
First Company’s VAQ series air handlers are a trusted choice in commercial and residential hydronic HVAC applications. The 9-320-3501 hot water coil is built to the same exacting standards as the original factory-installed component, ensuring seamless integration, proper fit, and optimal heat transfer efficiency.
Key Features
- OEM replacement hot water heating coil for First Company VAQ air handlers
- Compatible with 18 and 24 series VAQ vertical air handler units
- Engineered for reliable hydronic heating performance
- Direct-fit design for straightforward installation
- Built to First Company’s original manufacturing specifications
- Restores full heating capacity to your fan coil system
Compatibility
- First Company 18 Series VAQ Vertical Air Handlers
- First Company 24 Series VAQ Vertical Air Handlers
Application
Ideal for HVAC technicians and contractors performing maintenance or repair on First Company VAQ fan coil systems in light commercial and residential hydronic heating installations. Always verify unit model and coil orientation before installation.







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