Ductless Mini Split Unit, 18,000 BTU, Single Zone, 20 SEER, High Heat, Outdoor Unit

ComfortStar CHF18CD(O) – 18,000 BTU Single-Zone High Heat Outdoor Unit

The ComfortStar CHF18CD(O) is a high-efficiency inverter-driven outdoor condenser designed for single-zone ductless mini-split systems. Rated at 18,000 BTU and featuring a SEER rating of 20, this unit offers dependable year-round performance in both heating and cooling modes. It is well-suited for residential applications requiring precise zone control without traditional ductwork.

This outdoor unit is engineered for high ambient efficiency and is capable of operating in heating mode at outdoor temperatures as low as -22°F, making it suitable for colder climates. It is compatible with ComfortStar indoor units and supports high heat output with inverter technology for improved energy management and comfort control.

System Performance

• Cooling Capacity: 18,000 BTU
• Heating Performance: High heat capability down to -22°F outdoor temperature
• SEER Rating: 20
• Refrigerant: R-410A

Electrical and Physical Details

• Voltage: 230V
• Phase: Single Phase
• Compressor Type: Inverter rotary
• Construction: Corrosion-resistant cabinet suitable for outdoor installation

Installation Notes

This unit requires professional installation to ensure proper line sizing, electrical connection, and system commissioning. Installers should be EPA-certified for refrigerant handling and follow all applicable local and national codes. Appropriate clearances and proper drainage should be accounted for to ensure optimal performance.

Application and Use

The CHF18CD(O) is designed for single-zone applications where ductless solutions are preferred. It is ideal for medium-sized rooms, additions, or areas without central HVAC access. The outdoor unit should be paired with a compatible ComfortStar indoor air handler for complete operation.

Feature Highlights

• Inverter Technology: Variable-speed operation for better load matching and efficiency
• Quiet Operation: Engineered for low sound levels suitable for residential installations
• Compact Footprint: Space-efficient design allows for flexible placement
• Low Temperature Operation: Maintains heating output at sub-zero outdoor conditions
• Serviceability: Front panel access for maintenance and diagnostics