The FX4 fan coil enhances the efficiency of your indoor comfort system in two ways. First, Puron refrigerant is more efficient than traditional refrigerants. Second, the FX4 features a thermostatic expansion valve (TXV) which measures refrigerant usage to provide precision heating control during the winter season. As a result, you can enjoy year-round control over the cost of your indoor comfort.

Carrier's advanced technology is combined with proven components to provide superior performance and reliability. The enhanced drain pan and foil-faced insulation inhibit mold, mildew and bacterial growth for improved indoor air quality. The electronic control board reliably enhances system operation for your comfort and convenience. Each component of the FX4 is designed to maximize the performance of your indoor comfort system. Ask your local Carrier dealer how you can customize your system for added comfort, efficiency and environmental sensitivity.