Goodman

Goodman 3.5 Ton 15.2 SEER2 R32 Air Conditioner Split System | GLXS5BA4210A/ AMST42CU1300A

SKU: GLXS5BA4210A/ AMST42CU1300A
3.5 Ton15.2 SEER2Electric HeatR-32
MSRP $4,876.00
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Complete System Total $4,388.40

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Free shipping on complete systems. Most orders ship within 1–3 business days. Local pickup available at our Ocala, FL warehouse for additional savings.
Warranty Information
All units come with full manufacturer warranty covering parts. Register your warranty within 60 days of purchase for extended coverage.
Complete AC Split System 3.5 Ton · 15.2 SEER2 Cooling System R-32 Refrigerant Single-Stage Scroll
A complete, factory-matched cooling system. This kit pairs an R-32 outdoor condenser with a Multi-Position ECM air handler — both engineered to work together as an AHRI-certified system. In addition, we sell a factory-matched 8 kW HKTSN08X1 electric heat kit for this air handler, providing approximately 27,000 BTU/h of supplemental electric heat in addition to cooling.

System Performance at a Glance

3.5
Ton
Nominal Capacity
42,000
BTU/h
Cooling
15.2
SEER2
Cooling Efficiency
3/4
HP
ECM Blower
74
dB
Outdoor Sound

What's Included in This System

Two matched components, designed and certified to work together

1
Outdoor Condenser
GLXS5BA4210A
R-32 outdoor unit — the heart of the cooling system. Houses the compressor and outdoor coil; sits on a slab beside your home.
  • Tonnage3.5 Ton
  • SEER2 Rating15.2
  • CompressorSingle-Stage Scroll
  • Sound Level74 dB
  • RefrigerantR-32
2
Indoor Air Handler
AMST42CU13
Multi-Position ECM air handler with built-in R-32 evaporator coil. Installs in any of four orientations; accommodates field-installable electric heat kits.
  • CabinetC · 21"
  • InstallationMulti-Position
  • Blower Motor3/4 HP Multi-Speed ECM
  • Evaporator CoilBuilt-in, R-32
  • Electric Heat KitField-installable

Key Features

What sets this system apart

Complete Factory-Matched System

Both components — condenser and air handler — are engineered and AHRI-certified to work together. You get the published 15.2 SEER2 efficiency rating, correct refrigerant line sizing, compatible controls, and a single-source solution covered by Goodman's warranty.

Cooling + Electric Heat Split System

3.5-ton cooling capacity with 42,000 BTU/h output. This kit also includes a 8 kW HKTSN08X1 electric heat kit installed in the air handler, providing roughly 27,000 BTU/h of supplemental electric heat for cooler weather.

R-32 Refrigerant

Built around R-32 — the next-generation residential refrigerant with lower environmental impact than R-410A. R-32 systems require up to 30% less refrigerant charge and deliver improved thermodynamic performance, meeting current EPA and AIM Act requirements.

Single-Stage Scroll Compressor

The outdoor condenser uses a proven single-stage scroll compressor — reliable, consistent cooling performance with smooth operation, high efficiency, and long service life.

Multi-Speed ECM Blower

The air handler uses a Multi-Speed ECM (electronically commutated motor) that adjusts airflow precisely to demand. ECM blowers use significantly less electricity than older PSC motors, particularly during long low-speed operation, and run more quietly.

Electric Heat Included

A 8 kW HKTSN08X1 electric heat kit is included with this system and installs inside the air handler. Provides roughly 27,000 BTU/h of supplemental electric heat for cooler weather and emergency backup heat.

Why R-32 Refrigerant?

This system uses R-32 — here's how it compares to the outgoing R-410A standard

Feature R-32 (This System) R-410A (Old Standard)
Energy Efficiency Up to 10% higher Baseline
Refrigerant Charge Required Up to 30% less Standard
Thermodynamic Performance Superior heat transfer Standard
Regulatory Status Future-ready AIM Act phase-down

How Quiet Is the Outdoor Unit?

How the GLXS5BA4210A condenser compares to everyday sounds.

60 dB
Normal Conversation
Quiet indoor setting
This System
74 dB
Outdoor Condenser
Operating sound level
85 dB
Lawn Mower
From 50 ft · Clearly loud

Complete System Specifications

Full details for GLXS5BA4210A/ AMST42CU1300A

System Overview
Bundle SKU GLXS5BA4210A/ AMST42CU1300A
Nominal Capacity 3.5 Ton
Cooling Capacity 42,000 BTU/h
SEER2 Rating 15.2
Heating ~27,000 BTU/h via add-on HKTSN08X1 electric heat kit (8 kW)
Refrigerant R-32
Factory Refrigerant Charge 141 oz (outdoor unit)
Outdoor Condenser — GLXS5BA4210A
Compressor Single-Stage Scroll
Sound Level 74 dB
Refrigerant Charge 141 oz
Indoor Air Handler — AMST42CU13
Installation Multi-Position (Upflow / Downflow / Horizontal L / Horizontal R)
Cabinet C (21" wide)
Blower Motor 3/4 HP Multi-Speed ECM
Evaporator Coil Built-in, R-32, factory-installed TXV
Electric Heat Kit Field-installable (sold separately)
Electrical & Line Set
Outdoor Unit Voltage 208-230V Single-Phase / 60 Hz
Outdoor Unit MCA 5.9 A
Outdoor Unit MOCP 15 A
Liquid Line Size 3/8"
Suction Line Size 1 1/8"

Warranty Coverage

Protection across every component when properly registered

10 Year
Parts Limited Warranty
(All Components)
10 Year
Compressor Limited Warranty
(Outdoor Condenser)

Warranty terms require online product registration within 60 days of installation. Each component must be registered. See official Goodman warranty documents for complete terms and conditions.

Documentation

Manufacturer spec sheets for this system

AC Condenser Spec Sheet
PDF — Tap to downloadAir Handler Spec Sheet
PDF — Tap to download

Frequently Asked Questions

What comes in this kit?
Two components shipped together: (1) the outdoor condenser GLXS5BA4210A and (2) the indoor air handler AMST42CU13. Line set (refrigerant tubing), thermostat, ductwork, condensate drain, and electrical wiring are NOT included and are supplied by your HVAC contractor based on your home's installation needs. The 8 kW HKTSN08X1 electric heat kit is included and ships installed in the air handler.
Does this system provide heat?
This system is cooling-only as shipped. We sell a factory-matched 8 kW HKTSN08X1 electric heat kit for this air handler, providing approximately 27,000 BTU/h of supplemental electric heat. For more efficient heating in cool weather, consider a Heat Pump Split System instead — heat pumps move heat rather than generating it through resistance, which saves energy.
Why buy as a matched kit vs. separate components?
Matched systems are AHRI-certified to deliver their published SEER2 rating — mixing components from different manufacturers or model families often results in lower real-world efficiency and can complicate warranty claims. The factory match also ensures refrigerant line sizing, TXV calibration, and airflow are correct from day one.
What does AHRI-certified mean?
AHRI (Air-Conditioning, Heating, and Refrigeration Institute) independently tests and certifies matched HVAC system combinations. An AHRI certificate confirms that a specific condenser + air handler combination delivers the stated SEER2 rating under standardized test conditions. Many utility rebates and tax credits require AHRI-certified matched systems — your HVAC contractor can provide the AHRI certificate for this combination.
What is R-32 refrigerant?
R-32 is the next-generation residential refrigerant replacing R-410A. It has lower environmental impact, requires up to 30% less charge per system, and offers improved energy efficiency. R-32 is being adopted industry-wide to meet EPA and AIM Act requirements phasing down legacy refrigerants. R-32 systems are not backward-compatible with R-410A equipment.
What size home does this system serve?
A 3.5-ton system is generally appropriate for homes in the 1,800–2,200 sq. ft. range for cooling, though climate zone, insulation, window area, and home layout all affect sizing. A professional Manual J load calculation by your HVAC contractor is the most accurate way to confirm the right system size for your specific home.
Can I use the air handler in any orientation?
Yes — the AMST42CU13 is a Multi-Position air handler, supporting all four installation orientations: upflow, downflow, horizontal-left, and horizontal-right. Your HVAC contractor will select the orientation based on your home's ductwork layout and available install space.
Will this fit my existing ductwork?
Probably — most residential ductwork is designed for systems in the 2–5 ton range. Your HVAC contractor will measure static pressure and verify that your existing ducts can handle this system's airflow. In some cases ducts need to be resized or rebalanced. The air handler cabinet is C (21" wide).
How do I register the warranty?
Each component must be registered separately at Goodman's warranty registration page within 60 days of installation. You'll need the model number and serial number (from each data plate), installation date, and installing contractor information for both the condenser and air handler. Without timely registration, warranty terms revert to a shorter base period.

Designed, engineered, and assembled in the U.S.A. by Goodman Manufacturing — a member of the Daikin group.