Overview

Experience year-round comfort and modern efficiency with this high‑efficiency, single-stage split system heat pump from the GLZS4B R‑32 Series. Built to meet 2023 DOE M1 Efficiency Standards, this outdoor unit delivers quiet operation, durable construction, and next‑generation refrigerant technology for energy‑conscious homeowners and contractors.

Engineered with a high‑efficiency compressor (scroll on larger capacities, rotary on select smaller capacities), SmartShift™ defrost control, and multiple factory‑installed protections, it provides reliable performance, smooth operation, and service‑friendly access for simplified installation and maintenance.

Key Features & Benefits

• High‑Efficiency Compressor – Scroll or rotary designs deliver dependable, quiet heating and cooling with optimized efficiency.

• SmartShift™ Defrost Technology – Smooth, quiet, and reliable defrost cycles for consistent winter performance.

• Factory‑Installed Protections – Bi‑flow filter drier, suction‑line accumulator, crankcase heater, high‑capacity muffler, and high/low pressure switches help safeguard long‑term operation.

• Enhanced Coil Design – Aluminum fin coil with copper tubes (5 mm on select smaller units, 7 mm on larger) improves heat transfer and durability.

• Quiet PSC Fan Motor – Single‑speed condenser fan motor with extended‑life capacitor ensures smooth airflow and low sound levels.

• Service‑Friendly Access – Top and side service panels, sweat connections, and easy‑access gauge ports streamline install and maintenance.

• Rugged, Corrosion‑Resistant Cabinet – Heavy‑gauge galvanized steel with powder‑coat protection, steel louver coil guard, and removable grille‑top for fast component access.

• Hurricane‑Ready – Meets 2023 Florida Building Code unit integrity standards when properly anchored with an optional bracket kit.

• Verified Performance – AHRI Certified and ETL Listed; Proposition 65 compliant.

⚙️ Technical Highlights

• Efficiency – Up to 15.2 SEER2 / 7.8 HSPF2 with R‑32 refrigerant for lower environmental impact and strong seasonal performance.

• Operation – Single‑stage, high‑efficiency compressor paired with a single‑speed PSC condenser fan motor.

• Power – 208/240 V, 1‑Phase, 60 Hz; designed for residential and light commercial applications.

• Construction – Heavy‑duty galvanized cabinet, steel louver coil guard, foil‑faced internal insulation on select models, and removable grille‑top.

• Standards – Meets 2023 DOE M1 Test Standards and Florida wind integrity code when anchored.

Why It’s a Smart Choice

This GLZS4B Series heat pump blends energy efficiency, quiet comfort, and robust protection in a service‑friendly design. With SmartShift™ technology, R‑32 refrigerant, and a durable cabinet built for real‑world conditions, it offers long‑lasting performance and peace of mind—ideal for upgrades or new installations seeking dependable, future‑ready HVAC comfort.