Commercial Packaged Unit vs Split System: When to Choose Each
A contractor's guide to choosing between packaged rooftop units and split systems for commercial projects.
One of the first decisions in commercial HVAC design is whether to specify a packaged rooftop unit or a split system. Each configuration has distinct advantages depending on building type, space constraints, budget, and maintenance requirements.
Packaged units contain all components in a single cabinet, typically installed on the roof. Split systems separate the condenser (outdoor) from the air handler (indoor), connected by refrigerant lines. This guide helps contractors make the right specification decision.
ClimateProDirect stocks both packaged units and split system components from top brands, all available with $0 sales tax and free freight over $999.
Side-by-Side Comparison
| Factor | Packaged Unit | Split System |
|---|---|---|
| Installation | Single unit, rooftop or pad | Two units, indoor + outdoor |
| Space Required | Roof or ground pad only | Indoor closet + outdoor pad |
| Installation Cost | Lower (single connection) | Higher (refrigerant lines) |
| Efficiency (SEER2) | 13.4 - 17.5 | 14.0 - 20+ |
| Tonnage Range | 2T - 25T+ | 1.5T - 20T |
| Maintenance Access | Roof access required | Ground-level access |
| Best For | Retail, warehouse, restaurant | Office, multi-story, medical |
| AIM Act Compliant | Yes (R-32/R-454B) | Yes (R-32/R-454B) |
| Tax-Free at ClimateProDirect | Yes | Yes |
AIM Act Compliance
Both packaged units and split systems are available with AIM Act compliant refrigerants (R-32 and R-454B). Regardless of which configuration you choose, all equipment from ClimateProDirect meets 2026 federal requirements.
$0 Sales Tax Savings
A packaged 5-ton rooftop unit at $5,500 installed from ClimateProDirect saves $330 in sales tax versus a local distributor in a 6% tax state. The total installed cost advantage grows with larger tonnage.
Shop Tax-Free Equipment
iAIRE
8 Kilowatt 25,100 BTU Electric Heat Kit by iAIRE
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10 Kilowatt 31,400 BTU Electric Heat Kit by iAiRE
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iAIRE
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iAIRE
20 Kilowatt 62,800 BTU Electric Heat Kit by iAIRE
$547
ACiQ/Carrier
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$599
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Daikin
15 Kilowatt 51,150 BTU Daikin Heater Coil 460v
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Daikin
20 Kilowatt 68.200 BTU Daikin Heater Coil 460v
$951
Frequently Asked Questions
When should I specify a packaged unit over a split system?▼
Are packaged units less efficient than split systems?▼
Which option has lower total cost of ownership?▼
Can I replace an existing packaged unit with a split system?▼
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