Paired HVAC Systems
![](http://www.larsenenergysys.com/wp-content/uploads/2023/02/preferred-series-packaged-systems-577E-200x328-1.png)
PREFERRED™ SERIES GAS HEAT/ELECTRIC COOL SYSTEMS 577E
SEER RATING: up to 16
HSPF RATING: N/A
COMPRESSOR TYPE: Two-Stage
![](http://www.larsenenergysys.com/wp-content/uploads/2023/02/legacy-line-gas-heat-electric-cool-systems-model-577C-C-200x328-1.gif)
LEGACY™ LINE GAS HEAT/ELECTRIC COOL SYSTEMS 577C
SEER RATING: 14
HSPF RATING: N/A
COMPRESSOR TYPE: Single-Stage
![](http://www.larsenenergysys.com/wp-content/uploads/2023/02/Base-Line-PA4Z-200x328-1.png)
BASE LINE AIR CONDITIONER SYSTEMS PA4Z
SEER RATING: 14
HSPF RATING: N/A
COMPRESSOR TYPE: Single-Stage