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First Co. Manuals & User Guides

First Co. is a leading US-based manufacturer of residential and commercial HVAC products, specializing in independent fan coils, water-source heat pumps, and air handlers.

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About First Co. manuals on Manuals.plus

Founded in 1966, First Co. has established itself as an innovator in the HVAC industry, particularly known for its extensive line of niche heating and cooling products. Based in Dallas, Texas, the company manufactures a wide variety of fan coils, water-source heat pumps, and through-the-wall units designed for multifamily, hospitality, and commercial applications.

First Co. operates under the AE-Air umbrella and is dedicated to engineering high-quality, reliable climate control solutions made in the USA. Their product range includes hydronic fan coils, DX fan coils, and specialized air handling units that cater to unique architectural constraints.

First Co. manuals

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First Co A2L Sensor and TXV Installation Guide

February 5, 2025
First Co A2L Sensor and TXV Product Information Specifications Model: A2L Sensor and TXV Ceiling Fan Coils Installation Manual: IOM # IOM4100 Rev. # A Operation Ensure proper installation to…

First Co. video guides

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First Co. support FAQ

Common questions about manuals, registration, and support for this brand.

  • Where can I find First Co. installation manuals?

    Installation, Operation, and Maintenance (IOM) manuals are typically available on the First Co. website under the Product Literature section or on the specific product page.

  • Does First Co. sell directly to homeowners?

    No, First Co. products are sold through wholesale distributors to licensed HVAC contractors. Homeowners should contact a local contractor for purchase and installation.

  • What is the warranty on First Co. equipment?

    First Co. offers a standard limited warranty on its products, covering defects in materials and workmanship. The warranty is valid only if the equipment is installed by a qualified, licensed professional. Specific warranty terms vary by product model.

  • Can I install a First Co. fan coil myself?

    No. First Co. equipment must be installed and serviced by qualified, licensed personnel. Improper installation by unauthorized individuals may void the warranty and can cause safety hazards.

  • What does the 'AE-Air' name mean?

    First Co. operates under the parent name Applied Environmental Air (AE-Air), which reflects its broader mission in manufacturing environmental air systems.