GLZS5B

  • Up to 15.2 SEER2 / 7.8 HSPF2 performance
  • R-410A refrigerant
  • 1½ to 5 Tons
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Franklin GSZ16 Heat Pump
10 Yr Parts Limited Warranty*

* Complete warranty details available from your local dealer or at franklinhvacsystems.com. To receive the 10-Year Parts Limited Warranty, online registration must be completed within 60 days of installation. Online registration is not required in California or Quebec. The duration of warranty coverage in Texas and Florida differs in some cases.

Product Features+

  • High-efficiency scroll compressor
  • SmartShift® technology to
    ensure quiet reliable defrost
  • Enhanced aluminum fin with coil-5mm
    diameter copper tubes in 1.5T-3.5 ton
  • Enhanced aluminum fin coil with 7mm
    diameter copper tubes 4.0-5.0 ton
  • Single-speed PSC condenser fan motor
  • Factory-installed suction-line accumulator
  • Factory-installed compressor crankcase heater
  • Factory-installed high-capacity muffler
  • High- and low-pressure switches
  • Service valves with sweat connections
    and easy access to gauge ports
  • Fully charged for 15’ of tubing length
  • Ground lug connection
  • Fully enclosed contactor
  • Capacitor with extended life
  • AHRI Certified; ETL Listed

Outstanding Limited Warranty Protection+

All functional parts are covered by a 10-Year Parts Limited Warranty. For a full description of all warranties applicable to this product, please review the consumer brochure or product warranty by clicking on the links below.


The GLZS5B Heat Pump uses the R-32 and features operating sound levels that are among the best we offer in the heating and cooling industry. With its 15.2 SEER2 rating, the GLZS5B will help reduce energy consumption throughout the life of the system compared to units with a lower SEER.

Energy Consumption

Before purchasing this appliance, read important information about its estimated annual energy consumption, yearly operating cost, or energy efficiency rating that is available from your retailer.