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Duct Free Systems

Duct free heating and cooling systems make your home's individual rooms or other small spaces more comfortable.  Remember, just like whole-home systems, the higher the SEER and HSPF ratings, the more efficient they will be.

We offer a variety of through-the-wall packaged terminal air conditioners (PTAC) and duct free heating and cooling systems to meet any individual room's needs.

High Wall Product Offering

Feature Comparison
High Wall Product Offering
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High Wall Product Offering
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High Wall Product Offering
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Product NameEvolution® High Wall Indoor UnitPreferred™ High Wall Indoor UnitLegacy Line™ High Wall Indoor Unit
Model Family619F*B619P*BDH*QMA
PurposeHeating and coolingHeating and CoolingHeating and Cooling
Zone CapabilitySingle-zone/ Multi zoneSingle-zoneSingle-zone
Efficiency SEERUp to 30.5 SEER Up to 23.5 SEERUp to 15 SEER
Efficiency EERUp to 15.8 EERUp to 14.5 EERUp to 10.5 EER
Efficiency HSPFUp to 10.3 HSPFUp to 10 HSPFUp to 8.2 HSPF
Matching Outdoor Unit: Single-Zone538*FR38*MARDAQMA*
Matching Outdoor Unit: Multi-Zone538*KR38*MGRN/A
Energy Star RatedENERGY STAR®ENERGY STAR®ENERGY STAR®
Refrigerant TypePuron®Puron®Puron®
Number of Fan Speeds7 fan speeds4 fan speeds4 fan speeds
Sound LevelAs low as 22 dBAs low as 27 dBAs low as 40 dB
Wireless RemoteYesYesYes
Factory Warranty Parts10-year parts limited warranty upon registration10-year parts limited warranty upon registration10-year parts limited warranty upon registration
Manufacturer's Stated Benefits
  • Capacity sizes ranging from 9 to 18 BTUs
  • Heating capacity is 80% when temperatures fall as low as -22°F
  • Piping lengths up to 82 ft.
  • Base pan heater
  • Automatic louver mode
  • Air supply extends vertically 180°
  • Heating setback allows for 46°F heating mode
  • X-Fan mode
  • Smartphone control
  • Automatic after power outage
  • Advanced system diagnostics
  • Flat panel white or gray indoor unit
  • Capacity sizes ranging from 9 to 30 BTUs
  • Line lengths 82-164 ft. depending on unit capacity
  • Base pan heater
  • Auto louver mode
  • 46°F heating mode (heating setback)
  • Turbo mode
  • Sleep mode
  • White flat panel indoor unit
  • Capacity sizes ranging from 9 to 22 BTUs
  • Piping lengths 65-98 ft. depending on unit capacity
  • Motorized louver allows fixed or oscillating motion
  • Auto restart after power failure
  • Sleep mode
  • Washable filters
  • System diagnostics
  • One-Touch Memory
  • White flat panel indoor unit