WaterFurnace Envision products set the industry standard for efficiency, reliability and quiet operation. Available in seven single speed sizes and five dual capacity sizes, Envision units provide exceptional performance. All Envision units utilize the ozone-safe R-410A refrigerant to meet the most stringent EPA requirements now and for many years to come. Coated air coils add durability and longer life. A sophisticated microprocessor control sequences all components during operation for optimum performance, and provides easy-to-use troubleshooting features with fault lights and on-board diagnostics. Unit configurations include horizontal, vertical top discharge and vertical bottom discharge. Heavy-gauge metal cabinets are coated with durable poly paint for long lasting protection. Envision products represent the Company's highest efficiency units combined with features that provide the ultimate in performance and reliability.