Carrier® Heating & Cooling Systems Carrier® Turn to the Experts Comfort™ 15 Heat Pump Model: 25SCA5 Infinity® 24 Heat Pump With Greenspeed® Intelligence Model: 25VNA4 Infinity® 18VS Heat Pump Model: 25VNA8 Performance™ 15 Heat Pump Model: 25SPA5 Performance™ 17 Heat Pump Model: 25TPA7 Comfort™ 15 Heat Pump Model: 25SCA5 Comfort™ 15 Coastal Heat Pump Model: 25SCA5***C