1.5 Ton Goodman 15.2 SEER2 R32 Heat Pump System GLZS5BA1810, AMST24BU1300
The Goodman 1.5 ton R-32 heat pump system pairs the GLZS5BA1810 outdoor heat pump with the AMST24BU1300 multi-speed ECM air handler in an AHRI-certified match (AHRI #218222707) rated at 15.2 SEER2. It delivers about 18,000 BTU/h of cooling at 95°F and 17,800 BTU/h of heating at 47°F. SmartShift defrost, a factory-installed TXV, and a built-in R-32 refrigerant sensor come standard. It's designed for homeowners and HVAC contractors upgrading small homes, condos, and additions to Goodman's newest low-GWP refrigerant platform.
Is a 1.5 Ton Heat Pump System the Right Size?
The GLZS5BA1810 is the smallest size in Goodman's GLZS5B R-32 heat pump line. It suits spaces with a modest, steady heating and cooling load, where a larger unit would short-cycle and leave humidity behind.
Size by load, not square footage alone. Insulation, window area and orientation, ceiling height, duct leakage, occupancy, and local winter and summer design temperatures all affect the result. Try our AC tonnage and BTU calculator as a starting point.
Ideal for: Condos, apartments, small single-story homes, in-law suites, and room additions that need efficient electric heating and cooling.
Need more capacity? Step up to the 2 Ton Goodman 15.2 SEER2 R32 Heat Pump System GLZS5BA2410, AMST24BU1300 for slightly larger homes using the same air handler.
Recommended sizing is a general guideline only. Actual system requirements depend on insulation, climate, ductwork, windows, occupancy, and home layout. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | GLZS5BA1810 — 1.5 Ton R-32 Heat Pump |
|---|---|
| Indoor Air Handler | AMST24BU1300 Multi-Position ECM Air Handler (B Cabinet) |
| Application | Residential Split System Heat Pump (Heating & Cooling) |
| Refrigerant | R-32 |
| Compressor | Single-Stage Scroll Compressor |
| Efficiency | 15.2 SEER2 — AHRI #218222707 |
| Electrical | 208/230V, Single Phase, 60 Hz Outdoor Unit |
| Air Handler Electrical | 208/240V, Single Phase, 60 Hz |
The GLZS5BA1810 ships charged for 15 feet of 3/8" liquid line and uses a 3/4" suction line, so a short line set is all a typical small-home install needs. The AMST24BU1300 air handler has a factory-installed TXV, an all-aluminum coil, and a 3/4 HP multi-speed ECM blower. Optional 5–15 kW heat strips, 3/4" x 3/8" line sets, B-cabinet filters, and thermostats can be added at checkout. Browse more Goodman heating and cooling equipment.
Heat Pump & Air Handler Features
GLZS5BA1810 Outdoor Heat Pump
- 18,000 BTU/h nominal heating and cooling
- High-efficiency single-stage scroll compressor
- SmartShift technology for quiet, reliable defrost
- Enhanced aluminum fin coil with 5 mm copper tubes
- Factory-installed suction-line accumulator and crankcase heater
- High- and low-pressure switches
- Charged for 15' of tubing; 3/8" liquid, 3/4" suction
- 11.4 A MCA, 15 A max overcurrent protection
- Compact 29" W x 29" D x 39-1/2" H cabinet
- Meets 2023 Florida Building Code hurricane requirements when properly anchored
AMST24BU1300 Air Handler
- Factory-installed thermal expansion valve (TXV)
- Direct-drive, multi-speed 3/4 HP ECM blower
- All-aluminum evaporator coil optimized for R-32
- Factory-installed R-32 refrigerant leak sensor
- Horizontal or vertical configuration
- 17.5" wide B cabinet, 45" tall
- Less than 2.0% cabinet air leakage at 1.0 in. H2O (ASHRAE 193)
- Thermoplastic drain pan with secondary drain connection
- Tool-less filter access
- Accepts optional 5, 8, 10, or 15 kW heat strips
Specifications & Manuals
Product documentation includes outdoor heat pump and air handler technical specifications, installation instructions, and Goodman warranty information to assist with equipment selection, installation, and service.
Frequently Asked Questions
What size space is the 1.5 ton GLZS5BA1810 system meant for?
It's intended for small homes, condos, apartments, and additions with a load of about 1.5 tons. A load calculation is the best way to confirm the fit.
How much heat does the GLZS5BA1810 deliver in cold weather?
Goodman's heating data for this match lists about 17,800 BTU/h at 47°F and about 10,000 BTU/h at 17°F outdoors. Heat strips can add supplemental heat on the coldest days.
Why is the AMST24BU1300 air handler used with a 1.5 ton heat pump?
Goodman lists the GLZS5BA1810 + AMST24BU1300 as a matched, AHRI-certified system (AHRI #218222707). The air handler's multi-speed ECM blower is set to the correct airflow for 1.5 tons during installation.
Is the AMST24BU1300 a multi-position air handler?
Yes. Goodman lists horizontal or vertical configuration capability, and a coil mounting track makes repositioning quicker.
How much refrigerant line is the GLZS5BA1810 pre-charged for?
The outdoor unit is charged for 15 feet of 3/8" liquid line. Longer line sets require a charge adjustment following the installation instructions.
What filter size fits the AMST24BU1300 air handler?
The B cabinet uses a 16" x 20" filter. A washable filter, MERV 11 media cleaner, and electronic air cleaner options are available with this system.
GLZS5B Technical Specifications
Goodman Warranty Certificate"SEER2" stands for Seasonal Energy Efficiency Ratio 2. Specifically, SEER2 is the total heat removed from the conditioned space during the annual cooling season. The M1 testing procedure will increase systems' external static pressure by a factor of five to better reflect field conditions of install equipment. With this change, new nomenclature will be used to denote M1 ratings (including EER2 and HSPF2).
