Infinity 4-Ton 24 SEER R410A Variable Speed Heat Pump (208/230 V 1-Phase)

25VNA448A003 MFG #: 25VNA448A003
  • Buyer EQUI
  • Air Flow Vertical
  • Brand Carrier
  • CFM 4700
  • CFM Nominal 4700
  • Compressor Rotary
  • Compressor RLA 21.2
  • Compressor Stage Modulating
  • Compressor Type Rotary
  • Condenser Motor HP 1/3
  • Condenser Motor Speeds Variable - Speed
  • Condenser Motor Type Propeller Type, Direct Drive
  • Configuration Vertical
  • Cooling Capacity 46000
  • COP 2.6
  • Cycle 60
  • EER 13.5
  • Family Infinity
  • Fan Diameter 26
  • Frequency 60
  • Full Load 0.88 amp
  • Energy Star Rated Yes
  • High Pressure Yes
  • Inverter Yes
  • LEED Certified No
  • Low Pressure No
  • Sound Blanket Yes
  • Heating Capacity 46000, 48000
  • Height 52.02 in
  • High Pressure Switch True
  • HSPF 10.5
  • Length 37.80 in
  • Liquid Line Size 3/8
  • Liquid Line Fitting Sweat
  • Liquid Line Size 0.375 in
  • Low Pressure Switch False
  • Maximum Heating Capacity 46000
  • Maximum Piping Length 250
  • Maximum SEER 22
  • Max Sound Level 56
  • Metering Device TXV/EXV
  • Metering Device Heating TXV
  • Minimum Circuit 27.4 amp
  • Motor Phase 1
  • Nominal Seer 24
  • Number Of Fan Blades 3
  • Outdoor Fan Motor FLA 0.88
  • Package Quantity 1 ea
  • Rated Load 21.2 amp
  • Refrigerant R410A
  • Sound Blanket True
  • Sound Level 0 dBA
  • Gas Stages Modulating
  • Suction Line Size 7/8
  • Suction Line Fitting Sweat in
  • Suction Line Size 0.875 in
  • Tonnage 4
  • Voltage 208-230
  • Weight 396 lb
  • Width 37.80 in

The Infinity 20 heat pump  includes Greenspeed intelligence which is created by pairing adaptable-speed technology with our Infinity® control's intelligence. The unique, variable-speed compressor of this unit, when managed by the Infinity control as part of a complete Infinity system, allows it to literally adapt its output to the needs of the home. With infinite adjustments between 40 and 100% capacity, it gives the home only the amount of cooling or heating necessary.

This allows the system to operate longer at steadier, lower capacities, which ensures incredible energy efficiency and quiet operation with tighter temperature control than standard systems.

1 Limited time offer. Terms apply. See your participating dealer for details.


  • Greenspeed intelligence 
  • Up to 50% quieter than our nearest competitor1
  • Quiet Mode feature enables homeowners to cap sound levels at 69 dBA 
  • Advanced humidity control - Can remove up to 400% more moisture than standard systems2
  • Fully variable-speed compressor operation helps reduce indoor temperature swings
  • Over-the-air software update capabilities
  • Bluetooth® connectivity for enhanced service & diagnostics
  • Compressor sound blanket and Silencer System II design
  • Filter drier system protection from moisture and contaminants
  • WeatherArmor™ Ultra protection for durability
  • Non-ozone depleting Puron® refrigerant
  • 10-year parts limited warranty3
  • 10-year unit replacement limited warranty4


  • Optional labor warranty available5

 1 Depending on model combination. Based on laboratory testing of Carrier’s Infinity® 26 air conditioner models by Carrier engineers in Fall 2019 and AHRI sound level data for competitors’ variable-speed outdoor units, published as of December 2019.

 Based on Carrier testing under simulated “worst case” conditions, as compared to a single-stage 13.0 SEER unit.

 To the original owner, when product is used in a residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details

 10-year unit replacement limited warranty for compressor failures only, to original purchaser with timely registration, except where restricted by jurisdiction. See limited warranty certificate for details and restrictions.

 5 Ask your Carrier® dealer for details.

Bluetooth is a registered trademark of Bluetooth SIG, Inc.


  • Up to 24 SEER
  • Up to 15 EER
  • Up to 13 HSPF
  • Recognized as the Most Efficient of ENERGY STAR® 2020


  • Optimal summer dehumidification
  • Load matching performance with speed ranges between 25 and 100%
  • High-ambient cooling operation up to 125° F
  • Low-ambient cooling operation down to -15° F
  • Hybrid Heat® system compatible
  • Sound: as low as 51 decibels2


  • Greenspeed intelligence
  • Variable-speed compressor
  • System-protecting, high pressure switch and low pressure transducer
  • Sound reduction: compressor sound blanket, Silencer System II design and forward swept fan blades
  • Filter drier
  • Infinity level advanced diagnostic intelligence
  • Recommended control: Infinity control


  • 2-5 ton


  • 208-230 V


  • WeatherArmor™ Ultra protection package with a steel louvered coil guard and baked-on powder paint


       1 Proper sizing and installation of equipment is critical to achieve optimal performance. Split system air conditioners and heat pumps must be matched with appropriate coil components to          meet ENERGY STAR criteria. Ask your contractor for details or visit


        2 Quietest size within each model group during most common operating condition.