Goodman Rooftop AC Units (Packaged Systems)

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Goodman rooftop AC units (also called packaged units or RTUs) combine air conditioning + heating (optional) in a single outdoor cabinet—typically installed on rooftops or slabs.

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They’re popular for:

• Small commercial buildings
• Warehouses / shops
• Manufactured homes
• Residential homes without split systems

Types of Goodman Rooftop Units

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Gas/Electric Packaged Units

• AC + gas furnace in one unit
• Best for colder climates or dual-fuel needs
• Example: Goodman GPG Series

Heat Pump Packaged Units

• Heating + cooling using electricity
• More energy efficient in mild climates (like Arizona)
• Example: Goodman GPH Series

Cooling Only Packaged Units

• Straight AC (no heat or electric heat strip optional)
• Example: Goodman GPC Series

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Key Features

• All-in-one design → easier installs, less indoor equipment
• Scroll compressors → reliable & quieter operation
• Factory-installed filter racks
• Convertible airflow (horizontal or downflow)
• Heavy-gauge galvanized steel cabinet with powder coating
• Copper tube / aluminum fin coils
• Service access panels for easier maintenance

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 Sizes & Capacity

• Typically: 1.5 ton → 5 ton (residential/light commercial)
• Airflow: ~400 CFM per ton
• Larger commercial RTUs available beyond this range

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 Efficiency Ratings

• Usually 13.4 SEER2 – 15.2 SEER2 (newer models)
• Older units may be 13–14 SEER
• Heat pump versions rated with HSPF2 for heating efficiency

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 Pros

• Lower install cost (no indoor air handler needed)
• Space-saving (everything outside)
• Good reliability for the price
• Easy service access for techs
• Great for retrofits or replacements

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 Cons

• Slightly less efficient than high-end split systems
• Exposure to weather (sun, dust, monsoon storms in AZ)
• Can be louder than split systems
• Shorter lifespan if not maintained properly

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Typical Lifespan

• 10–15 years in Arizona
  (Heat + dust + rooftop exposure shorten life compared to indoor systems)

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 Maintenance Tips 

• Change filters every 1–2 months
• Wash condenser coils before summer
• Check drain lines (common clog issue)
• Inspect electrical components yearly
• Shade or reflective coating can help reduce heat stress

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