Carrier® Heat Pumps with Puron® refrigerant provide a collection of features unmatched by any other family of equipment. The 25HHA4 has been designed utilizing Carrier’s Puron® refrigerant. This environmentally sound refrigerant allows you to make a responsible decision in the protection of the earth’s ozone layer.

NOTERatings contained in this document are subject to change at any time. Always refer to the AHRI directory ( for the most up-to-date ratings information.


Energy Efficiency

  • 14 – 15 SEER/11.5 – 12.5 EER/8.2 – 8.5 HSPF (Based on tested combinations)


  • Levels as low as 69 dBA

Design Features

  • Small footprint
  • WeatherArmor™ cabinet
  • All steel cabinet construction
  • Mesh coil guard

Reliability, Quality and Toughness

  • Scroll compressor
  • Factory-supplied filter drier
  • High pressure switch
  • Low pressure switch
  • Accumulator
  • Line lengths up to 250’ (76.2 m)
  • Low ambient operation (down to -20°F/-28.9°C with low ambient accessories

Corona virus (COVID-19) update