The Goodman GSZ13 is a relatively inexpensive and inefficient heat pump, with a single compressor. It earns energy efficiency ratings of 13 SEER (cooling) and 7.8 HSPF (heating).
The heating and cooling capacity for this model both range from 18,000 to 60,000 BTU/h (i.e. from 1.5 to 5 tons). Sound output ranges from 71 to 76 dB.
This model uses R-410A refrigerant (a.k.a. Puron). It thus compares favorably to the GSH13 (a Goodman model with similar efficiency), which uses R-22 (a type of refrigerant known for damaging the Earth's ozone layer).
Goodman's manual for the GSZ13 provides detailed information about the unit's performance at different temperatures, so you can assess its likely operation in your climate.
Questions about this model?