
Reliable year-round heating and cooling for small homes — at the most accessible price point Goodman offers. The GLZS4BA1810 is a 1.5-ton, single-stage heat pump that handles both summer cooling and winter heating from one outdoor unit. Approved for all 50 US states and built with SmartShift® technology for quiet, reliable operation all year long.
Key Features:
- 14.3 SEER2 cooling / 7.8 HSPF2 heating
- 1.5 Ton / 18,000 BTU/h — ideal for homes up to 750–1,000 sq ft
- Single-stage scroll compressor
- SmartShift® defrost technology — quiet, smooth transitions in heating mode
- Factory-installed bi-flow liquid-line filter drier
- Factory-installed suction-line accumulator — compressor protection
- Factory-installed compressor crankcase heater — cold-weather reliability
- Factory-installed high-capacity muffler — quieter operation
- Enhanced aluminum fin coil with 5mm copper tubes
- Service valves with sweat connections and easy-access gauge ports
- Factory pre-charged for 15 ft line set
- High and low-pressure safety switches
- Steel louver coil guard + sound control top
- Architectural Gray galvanized steel cabinet
- Hurricane-ready — meets 2023 Florida Building Code
- Approved for all 50 US states
- R-32 refrigerant — lower GWP than R-410A
- AHRI Certified and ETL Listed
- Made in the USA
⚠️ R-32 only — compatible indoor unit with RDS required. Not compatible with R-410A.
⚠️ TXV required on indoor unit.
⚠️ Backup heat recommended for extreme cold. Heat pump compatible thermostat required if using gas furnace backup.Specs:
- Tonnage: 1.5 Ton (18,000 BTU/h)
- SEER2: Up to 14.3 | HSPF2: Up to 7.8
- Refrigerant: R-32 | Compressor: Single-Stage Rotary
- Voltage: 208/230V | MCA: 11.4A | MOP: 15A
- Liquid Line: ⅜" | Suction Line: ¾"
- Sound: 74 dBA | Pre-Charge: 15 ft
- Operation: Heating + Cooling
Warranty: 10-year limited parts warranty with online registration within 60 days.
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