Amana Introduces ALZS4N and ALZS4B R32 Heat Pumps

Amana Introduces ALZS4N and ALZS4B R32 Heat Pumps

Amana is introducing the R32 Amana 14.3 SEER2 heat pumps to replace the existing R410A condensers. The old ASZN4 transitions to the new ALZS4N and the old ASZH4 transitions to the new ALZS4B.

Background:

• This change is a part of the transition to A2L refrigerants.
• Daikin is getting a head start on the transition to prepare for the installation cutoff at the end of 2025.

Changes to Note:

• There is a one-to-one model change, shown on the table to the right.
• The new units use R32 and will require R32 coils and air handlers to match.
• When matched to a non-UL2-40 furnace, Furnace Integration Kit 0230K00044 (.489914) is required.
• R32 equipment uses significantly less charge than R410A.
• The heat pumps have been upgraded in some aspects to conform to UL Standard 60335-2-40 (aka UL2-40).
  • Contactors are enclosed, with lug connections.
  • The grille top now complies.
• In some cases the units are smaller. See Appendix Two.

What’s Staying the Same:

• The warranty will stay at 10-Year Parts (registration required).
• Key components are the same on both models:
  • 1-speed PSC fan motor
  • Factory-installed filter drier
  • Factory-installed high-pressure switch
• The ALZS4B will keep the:
  • High efficiency scroll compressor
  • High density foam compressor sound blanket
• Most related items are the same with the exception of the TXV

Transition

HVAC Distributors will continue to stock the old models, then transition to the new models when inventory is depleted.

Additional Items to Note:

• DO NOT mix R32 and R410A equipment to make a system.
• R32 equipment uses a much smaller charge. Remember to check the IOM.
• Sign up to receive your R32 certification! It is not required, but is best practice.
• Have the proper tools to work with R32 and R454B equipment.

For additional questions on this transition, contact your HVAC Distributors, Inc. Account Manager.