First Company 18HX5 Uncased Horizontal Fan Coil | 1.5 Ton 18000 BTU, 5 kW Heat | Compatible with Split System AC Condensers and Heat Pumps

The First Co. 18HX5 is a 1.5-ton, uncased horizontal fan coil built specifically for tight ceiling drop cavities and fur-downs. At exactly 10 inches high, it stays completely out of sight, eliminating the need for a dedicated utility closet. Delivering 18,000 BTU of cooling and 5 kW of factory-installed electric heat, this unit is sized perfectly for 600 to 800 square-foot spaces like bonus rooms, small offices, or single-bedroom additions. Because it shares the standard HX chassis, it drops directly into existing rough openings for fast, hassle-free replacements.

Installation is straightforward: tie it into your outdoor AC unit or heat pump, connect the refrigerant lines, and hook up the 24V thermostat. The 240/24V transformer and 5 kW heat kit arrive pre-wired from the factory, saving you time and money on extra parts. To protect your ceilings from water damage, the unit features a sloped, insulated drain pan with primary and secondary overflow connections to keep condensation moving safely out of the home. Inside, copper tubing and aluminum fins provide maximum durability and corrosion resistance in moisture-heavy environments.

Features of the First Company 1.5 Ton 5 kW Horizontal Fan Coil (Uncased Air Handler) 18HX5

• 10-Inch Low-Profile Design: Slides easily into tight ceiling fur-downs where standard air handlers cannot fit.
• Factory-Installed 5 kW Heat: Arrives pre-wired and ready to run—no separate field heat kit required.
• Sloped & Insulated Drain Pan: Ensures clean, gravity-fed condensate drainage to prevent ceiling leaks.
• Dual Drain Connections: Equipped with primary and secondary 3/4-inch NPT overflow ports for backup protection.
• Plug-and-Play Wiring: Includes a factory-installed 240/24V relay and transformer.
• Durable Coil Construction: Built with moisture-resistant copper tubes and aluminum fins to prevent joint corrosion.
• Accessible Maintenance: Designed for easy servicing without having to remove the entire unit from the ceiling.

Technical Specifications