Description
Comfortstar Star Pro 1.5 Ton Inverter Heat Pump Split System (CSS18CD(O) + ASH18SG32)
This is a complete, AHRI matched Star Pro heat pump system from Comfortstar: the CSS18CD(O) side-discharge inverter condenser and the ASH18SG32 multi-position air handler, both running on R-32. Together they are rated at 18,000 BTU/h cooling, 19,000 BTU/h heating, 18.4 SEER2, 11.5 EER2 and 8.6 HSPF2 under AHRI certificate 217752509.
The condenser uses an inverter rotary compressor that speeds up and slows down with the load, so the system holds temperature more evenly, pulls more moisture out of the air in humid weather and runs quietly (54 dBA outdoors). It heats down to -4°F and still produces about 14,500 BTU/h at 5°F. The side-discharge cabinet is very small at 36 1/32" wide, 25 19/32" tall and 13 37/64" deep, which helps on side yards, rooftops and tight replacement jobs.
Indoors, the ASH18SG32 installs upflow, downflow or horizontal in either direction. Its constant torque ECM blower delivers 650 CFM on high and adjusts to hold airflow as filters load up. Both units run on ordinary 24V heat pump controls, so no proprietary thermostat is needed, and Comfortstar designed the system to reuse existing R-410A line sets and wiring in most change-outs.
Outdoor Unit: CSS18CD(O) Specifications
- Nominal Capacity (Tons): 1.5
- Rated Cooling Capacity (BTU/h): 18,000
- Rated Heating Capacity @ 47°F (BTU/h): 19,000
- Max Heating Capacity @ 5°F (BTU/h): 14,500
- Compressor: Inverter Rotary
- Discharge: Side
- Refrigerant: R-32
- Voltage/Phase/Hz: 208-230 V / 1 Ph / 60 Hz
- MCA / MOP: 16 A / 20 A
- Liquid / Suction Line: 3/8" / 3/4"
- Max Line Length: 98 ft (pre-charged for 25 ft)
- Operating Range: Cooling 5°F to 131°F / Heating -4°F to 75°F
- Sound Level: 54 dBA
- Dimensions (W x H x D): 36 1/32" x 25 19/32" x 13 37/64"
- Net / Shipping Weight: 84 lb / 92 lb
Indoor Unit: ASH18SG32 Specifications
- Configuration: Multi-position (upflow, downflow, horizontal left/right)
- Blower Motor: Constant torque ECM
- Airflow (CFM, high/low): 650 / 420
- Sound Level (dBA, high/low): 38.5/34
- Metering Device: Piston
- Refrigerant: R-32
- Voltage/Phase/Hz: 208-230 V / 1 Ph / 60 Hz
- MCA / MOP (without heat): 3.5 A / 6 A
- Electric Heat: 5 kW to 20 kW heat strips (Comfortstar EHK-E series), sold separately
- Dimensions (W x D x H): 17 33/64" x 21 1/32" x 45"
- Net / Shipping Weight: 114 lb / 127 lb
System Ratings
- AHRI Reference Number: 217752509
- SEER2: 18.4
- EER2: 11.5
- HSPF2: 8.6
- Warranty: 10 years parts, 10 years compressor
Both units ship separately. Line set, electric heat strip, thermostat, disconnect, condenser pad and filter are sold separately. Installation and service require a licensed HVAC technician.
