Frequently Asked Questions

• What size (tonnage or BTU) 96% AFUE furnace and split system do I need for my home?

  A Manual J load calculation is the best method. As a starting point, match cooling by tonnage to your home’s heat gain and select furnace BTU for heat loss, then confirm airflow and duct capacity.

• Are these Goodman systems compatible with existing PVC venting and upflow/horizontal installations?

  Yes. AFUE 96 furnaces are designed for Schedule 40 PVC/CPVC venting and upflow/horizontal use. Reuse is possible if size, length, and condition meet the installation manual and code.

• How do two-stage heating and variable-speed blowers improve comfort and efficiency?

  They run longer on lower heat and airflow, reducing temperature swings and noise, improving humidity control, and using less energy compared to single-stage, single-speed systems.

• Can these R-32 split systems replace older R-410A equipment and what else must be changed?

  R-32 is not a drop-in for R-410A. Use a matched R-32 outdoor unit and indoor coil/valve, verify or replace/flush the line set, and follow manufacturer charging and controls requirements.

• What SEER2 options are available in this category and how do they impact operating cost?

  Typical options include 14.0, 14.3, 14.5, and 15.2 SEER2. Higher SEER2 generally lowers cooling costs, especially in warmer climates or with longer cooling seasons.

• Do these systems require professional installation and permits?

  Yes. Gas, venting, condensate, electrical, refrigerant, and code compliance require licensed professionals and local permits. Many warranties also require pro installation.

• Which cabinet width should I choose to fit my existing ductwork?

  Measure your coil, plenum, and return openings and select a furnace width that matches to minimize transitions and maintain proper airflow and static pressure.

• What is included in a split system package versus components sold separately?

  Packages typically include the furnace, matched indoor coil, and outdoor unit. Sold-separately items may include line set, thermostat, pad, filter drier, and accessories.

• Are these systems suitable for light commercial or multi-family applications?

  Yes, when properly sized and ducted. They are commonly used in small offices, retail bays, and multi-family common areas within capacity and code limits.

• How do I match furnace BTU to tonnage and coil for best performance?

  Choose furnace BTU for heating load, then ensure the blower supports the required CFM for the cooling tonnage and that the indoor coil is matched to the outdoor unit.