Frequently Asked Questions

• How do I choose the right cased coil size for a 1.5-2 ton outdoor unit?

  Match the coil’s nominal tonnage (1.5 or 2 ton) to the condenser and verify an AHRI-listed match, metering device, and airflow.

• Which refrigerant coil (R-32, R-410A, or R-454B) should I use for my system?

  Use the same refrigerant as the outdoor unit. R-32 and R-454B are A2L; follow approved components and local codes.

• What cabinet width (14", 17.5", or 21") fits my existing furnace or air handler?

  Measure the furnace or air handler cabinet. Choose the matching width; transition kits can adapt when sizes differ.

• Should I select horizontal, vertical, or multi-position for my installation?

  Match the coil orientation to your ductwork and space. Multi-position adds flexibility-follow the drain pan orientation.

• Are these cased coils compatible with both air conditioners and heat pumps?

  Yes. Confirm the correct TXV/piston for your refrigerant and use heat-pump-rated components where required.

• Do I need a licensed contractor to replace a cased evaporator coil?

  In most jurisdictions, yes. Refrigerant handling, charging, and A2L rules require certified professional installation.

• Can I use a 1.5-2 ton coil with a 1.5 or 2 ton condenser without performance loss?

  Yes, when properly matched and charged, with correct metering device and 350-450 CFM per ton airflow.

• What additional parts (TXV, line set flush) are needed when switching refrigerants?

  Typically a new TXV/piston for the refrigerant, a new filter drier, nitrogen purge, deep vacuum, and cleaned or replaced lines.

• How do SEER2 systems affect coil selection?

  SEER2 is a system rating. Pick coils listed in AHRI matches for your outdoor unit to meet efficiency targets.

• What maintenance helps my new coil last?

  Replace filters regularly, keep the drain clear, maintain airflow, and schedule annual professional service.