The Carrier Infinity 19 Series Two-Stage Heat Pump, with Puron refrigerant, Model 25HNA9, is available in 2-5 ton nominal sized units.

Standard Features

Energy Efficiency

• 15.5-19 SEER/11.5-14 EER/9.0 HSPF
  New Aesthetic Design
  
• WeatherArmor UltraTM
  -   Baked on powder paint
  -   Steel louver coil guard
  -   Color matched cabinet screws
  Extra Quiet Operation
  
• Silencer System IITM for sound as low as 72 dBA
  -   Quiet mount split post compressor grommets
  -   External silencer muffler
  -   Exclusive Silencer Top design
  -   Variable speed outdoor condenser fan motor
  -   Forward-swept condenser fan blade
  -   Compressor blanket
  
• Quiet Shift Defrost
  Reliability, Quality and Toughness
• Two-Stage scroll compressor
• Field-installed 16 cu. in. filter drier
• Back-seating service valves
• High pressure switch
• Loss of charge switch
• Internal pressure relief valve
• Long-line accessory connections
• Suction line accumulator
• Vapor fog eliminator
• Ideal Defrost
  Controls and Diagnostics
• Second generation InfinityTM control (Infinity Control MUST be used, no substitutes)
• Utility Interface Connections
• Up to 18 point diagnostic capability
  Applications
• Long-line - up to 250 ft. total equivalent length; see Long Line Guide for more information
• Low ambient (down to 0oF)
  

Standard Features

Energy Efficiency

•   15.5 - 16.5 SEER / 12.5 / 9.0 - 9.5 HSPF
  (based on tested combinations)

•  WeatherArmor™ System
  •  Baked-on powder paint
  •  Steel-louver Coil Guard

•  Sound as low as 69 dBA

•   2-Stage Scroll Compressor
•   Field-installed Filter Drier
•   Front-seating Service Valves
•   High-Pressure Switch
•   Loss-of-Charge Switch
•   Internal Pressure-Relief Valve
•   Internal thermal overload
•   Suction Line Accumulator
•   Crankcase Heater - Standard

•   Infinity™ or thermostat control
•   Utility interface connections
•   Enhanced diagnostics with Infinity Control
•   Low Ambient cooling to 0°F with complete Infinity™ System

Standard Features

Energy Efficiency

• 15 SEER/12 EER/8.5 HSPF
  New Aesthetic Design
  
• WeatherArmor UltraTM
  -   Baked on powder paint
  -   Steel louver coil guard
  -   Color matched cabinet screws
  Extra Quiet Operation
  
• Silencer System IITM for sound as low as 68 dBA
  -   Quiet mount split post compressor grommets
  -   External silencer muffler
  -   Exclusive Silencer Top design
  -   8 Pole PSC ball bearing condenser fan motor
  -   Forward-swept condenser fan blade
  -   Compressor blanket
  
• Quiet Shift Defrost
  Reliability, Quality and Toughness
• Scroll compressor
• Field-installed 16 cu. in. filter drier
• Back-seating service valves
• High pressure switch
• Loss of charge switch
• Internal pressure relief valve
• Internal thermal overload
• Suction line accumulators
• Vapor Fog Eliminator Controls and Diagnostics
• InfinityTM control compatible
• Utility Interface Connection
• Up to 14 point diagnostic capability
• Long line accessory connections
• Ideal Defrost
  Applications
• Long-line - up to 250 ft. total equivalent length, see Long Line Guide for more information
• Low ambient (down to 0oF)

• Up to 14.5 SEER / 12.5 EER / 8.2 HSPF

• Sound as low as 72 dBA with accessory sound blanket

• Scroll Compressor
• Field installed Filter Drier
• High-Pressure/Loss-of-Charge Switches
• Front-seating Service Valves
• Internal Pressure-Relief Valve
• Internal thermal overload
• Baked-on powder paint
• WeatherArmor Protection - with dense wire coil guard - Optional
• Suction-line Accumulator