Goodman AMST42CU1300 – 3.5 Ton Variable Speed Air Handler | Multi-Position ECM Indoor Unit | R-32 Refrigerant | 21" Cabinet | AMST_32 Series
Goodman AMST42CU1300 – 3.5 Ton Variable Speed Air Handler | Multi-Position ECM Indoor Unit | R-32 Refrigerant | 21" Cabinet | AMST_32 Series
Goodman AMST42CU1300 – 3.5 Ton Variable Speed Air Handler | Multi-Position ECM Indoor Unit | R-32 Refrigerant | 21" Cabinet | AMST_32 Series
$1,802.00
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Overview
The Goodman AMST42CU1300 from the AMST_32 Series is a 3.5 Ton Multi-Position Variable Speed Air Handler designed for superior comfort, energy efficiency, and system flexibility.
Optimized for R-32 refrigerant, this Goodman model combines a 9-speed ECM blower motor, factory-installed TXV, and AlumaFin7™ all-aluminum coil for long-lasting performance and quiet operation.
With its SmartFrame™ galvanized-steel cabinet and multi-position configuration, it’s ideal for residential and light commercial HVAC applications where reliability and efficiency matter most.
Key Features & Benefits
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9-Speed Variable ECM Motor – Provides consistent airflow, energy savings, and quiet operation.
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All-Aluminum AlumaFin7™ Coil – Delivers durable, corrosion-resistant heat transfer performance.
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Factory-Installed TXV – Ensures precision refrigerant control for both cooling and heat pump applications.
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R-32 Optimized Design – Includes a leak detection sensor for A2L safety and compliance.
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SmartFrame™ Cabinet – Galvanized-steel, screw-less design reduces condensation and simplifies service.
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Compact 21” Depth – Fits tight installation spaces such as attics and closets.
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Multi-Position Flexibility – Upflow, downflow, or horizontal configurations for easy setup.
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DecaBDE-Free Drain Pan – Dual primary and secondary connections in high-temp thermoplastic.
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Low Air Leakage – < 2.0% at 1.0 in H₂O per ASHRAE 193 for improved efficiency.
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Electric Heat Compatible – Works with 3–25 kW heater kits (5–10 kW nickel-chromium available).
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AHRI Certified & ETL Listed – Verified for safety, performance, and reliability.
⚙️ Technical Specifications
| Category | Specification |
|---|---|
| Product Family | AMST_32 |
| Family Description | Multi-Position, Multi-Speed, ECM-Based Air Handler with Internal TXV (1½ – 5 Tons) |
| Model Number / SKU | AMST42CU1300 |
| Unit Type | Indoor |
| Product Class | Air Handler |
| Tonnage | 3.5 Ton |
| Refrigerant Type | R-32 |
| Motor Speed Type | 9-Speed ECM Variable Speed |
| Blower Motor FLA | 5.7 A |
| Voltage Range | 197 – 253 V |
| Power Supply | 208/230 V – 1 Phase – 60 Hz |
| Minimum Circuit Amps | 5.9 A |
| Electric Heat Options | 3 kW – 25 kW Kits (5–10 kW Nickel-Chromium Available) |
| Coil Type | All-Aluminum AlumaFin7™ (7 mm on 1½–3½ Ton Models) |
| Cabinet Type | SmartFrame™ Galvanized Steel |
| Cabinet Width | 21-1/8 in |
| Cabinet Depth | 21 in |
| Cabinet Height | 53-7/16 in |
| Weight | 153 lb |
| Air Leakage | < 2.0% @ 1.0 in H₂O / < 1.4% @ 0.5 in H₂O (ASHRAE 193) |
| Drain Pan | High-Temp DecaBDE-Free Thermoplastic w/ Primary & Secondary Connections |
| Installation Type | Multi-Position (Upflow / Downflow / Horizontal Left / Horizontal Right) |
| Cabinet Insulation | Foil-Faced, Glue-less, Condensation-Resistant |
| Filter Access | Tool-less Front Access |
| Certifications | AHRI Certified, ETL Listed, Proposition 65 Compliant |
| Proposition 65 Label | Checked Specification |
Cabinet & Construction Highlights
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Rigid SmartFrame™ Cabinet for structural strength and quieter operation
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Horizontal or Vertical Installation for flexibility
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Foil-faced insulation minimizes noise and condensation
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21” compact depth for tight-space installations
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Glue-less insulation retention for longevity
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Tool-less filter access for easy maintenance
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Galvanized, embossed finish for rust protection
Certifications
✅ AHRI Certified
✅ ETL Listed
✅ Proposition 65 Compliant
Why Choose Goodman
Trusted by HVAC professionals nationwide, Goodman combines dependable American engineering with cutting-edge efficiency.
The AMST42CU1300 provides consistent comfort, reliable performance, and compatibility with R-32 refrigerant — ensuring your system is ready for the future of HVAC efficiency.
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