First Co. is a leading manufacturer of innovative HVAC systems, specializing in fan coils, air handlers, and heat pumps for residential and commercial use.
First Co., headquartered in Dallas, Texas, has established itself as a premier manufacturer of high-quality heating, ventilation, and air conditioning (HVAC) equipment. Specializing in advanced residential and commercial multi-family solutions, the company produces a wide array of systems including horizontal and vertical fan coil units, water source heat pumps, and variable speed air handlers.
Built on a foundation of reliability and efficiency, First Co. products are engineered to deliver superior indoor comfort while meeting rigorous industry standards. Discover installation guides, operation manuals, and maintenance instructions for your First Co. HVAC equipment below.
Latest manuals from manuals+ curated for this brand.
Watch setup, installation, and troubleshooting videos for this brand.
Common questions about manuals, registration, and support for this brand.
First Co. products are proudly manufactured at their headquarters located in Dallas, Texas.
No, the HX and HXX Series fan coil units are designed strictly for horizontal installation, typically above dropped ceilings.
Regular maintenance includes checking and replacing air filters, inspecting and cleaning mechanical components, and ensuring the drain piping and coils are clear of debris. Refer to your specific First Co. model's manual for detailed procedures.
If your unit was factory-installed with a high-density MERV 10 filter, it may restrict air flow. First Co. recommends switching to a standard MERV 3/4 or MERV 8 pleated filter during installation or the next filter change to achieve certified ratings.