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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/SEER2 and HSPF/HSPF2 ratings, the more efficient they will be.

The DOE’s regional breakdown by state is as follows:

  • North
    • 14.0 SEER/ 13.4 SEER2
    • 8.8 HSPF/7.5 HSPF2
  • Southeast
    • 15.0 SEER/ 14.3 SEER2
    • 12.2 EER/11.7 EER2
    • 8.8 HSPF/7.5 HSPF2
  • Southwest
    • 15.0 SEER/ 14.3 SEER2
    • 12.2 EER/11.7 EER2
    • 8.8 HSPF/7.5 HSPF2
DOE Regional SEER Breakdown Map

SEER/SEER2 And HSPF/HSPF2

SEER2 is an updated rating standard introduced by the DOE. SEER2 standards are intended to provide a better gauge of typical home operating conditions whereas the older SEER rating utilized very precise protocols to determine ratings in ideal conditions. SEER2 standards include updated testing means that give a better indication of how a unit will operate in the real world.

HSPF2 is the newest type of rating system that expands on the basic HSPF scale.

Much like miles-per-gallon for a car, SEER/SEER2, EER/EER2 and HSPF/HSPF2 offer an easy way to compare efficiencies of different products – the higher the rating, the more efficient the unit. Just be sure you are comparing either SEER vs SEER or SEER2 vs SEER2 (same for EER/EER2 and HSPF/HSPF2).

EER2 vs. SEER2

EER2 and SEER2 both evaluate an air conditioner’s energy efficiency, but they’re concerned with two different types of temperature conditions:

  • EER2 measures an air conditioner’s efficiency at the peak cooling temperature of 95°F.
  • SEER2 measures an air conditioner’s efficiency throughout an entire cooling season, with temperatures ranging from 65°F to 104°F.

Call Stuart Service Inc To Find Out If Duct-Free Systems Are Right For You.

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. Call us now at 931-455-0208.

Ductless High Wall Indoor Heat Pumps

619PHB

Evolution® Indoor Ductless High Wall Unit

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Model Family: 619PHB
Purpose: Heat & Cool
Zone Capability: Single Zone and Multizone
Efficiency SEER/SEER2: Dependent upon outdoor unit pairing
Efficiency EER/EER2: Dependent upon outdoor unit pairing
Efficiency HSPF/HSPF2: Dependent upon outdoor unit pairing
Matching Outdoor Unit: Single-Zone: 38MARB
Matching Outdoor Unit: Multi-Zone: 38MGRB
Energy Star Rated: ENERGY STAR® certified
Refrigerant Type: Puron®
Number of Fan Speeds: Fully modulating fan speeds
Sound Level: As low as 29 decibels
Wireless Remote: Yes
Factory Warranty Parts: 10-year parts limited and 10-year compressor limited warranties to the original purchasing owner upon timely registration
Manufacturer's Stated Benefits:
  • Up-down / right-left louver control (fixed or swing)
  • Relative Humidity Sensor
  • Intelligent Eye (occupancy sensor)
  • Built-in Wi-Fi®
  • ECO Mode
  • Aluminum Golden Hydrophilic pre-coated fins
  • Modes: Cool, Heat, Dry, Fan, Auto
  • Turbo Mode
619AHB

Preferred™ High Wall Indoor Unit

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Model Family: 619AHB
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER/SEER2: Dependent upon outdoor unit pairing
Efficiency EER/EER2: Dependent upon outdoor unit pairing
Efficiency HSPF/HSPF2: Dependent upon outdoor unit pairing
Matching Outdoor Unit: Single-Zone: 38MARB
Matching Outdoor Unit: Multi-Zone: 38MGRB
Energy Star Rated: Select systems with ENERGY STAR® certification
Refrigerant Type: Puron
Number of Fan Speeds: 4
Sound Level: As low as 24 dB(A)
Wireless Remote: Yes
Factory Warranty Parts: 10-Year Parts Limited Warranty
Manufacturer's Stated Benefits:
  • Modes: Cool, Heat, Dry, Fan, Auto
  • Turbo Mode
  • Sleep Mode
  • Intelligent Eye (Occupancy Sensor)
  • Relative Humidity Sensor
40MHHAQ

Legacy™ Line High Wall Indoor Unit

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Model Family: 40MHHAQ
Purpose: Heat & Cool
Zone Capability: Single Zone and Multizone
Efficiency SEER/SEER2: Dependent upon outdoor unit pairing
Efficiency EER/EER2: Dependent upon outdoor unit pairing
Efficiency HSPF/HSPF2: Dependent upon outdoor unit pairing
Matching Outdoor Unit: Single-Zone: 38MHRQ
Matching Outdoor Unit: Multi-Zone: N/A
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: Four fan speeds
Sound Level: As low as 27 decibels
Wireless Remote: Yes
Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration
Manufacturer's Stated Benefits:
  • Auto-restart function
  • Turbo Mode
  • Sleep Mode
  • Follow Me (senses temperature at handheld remote)
  • Up-down louver control (fixed or swing)
  • Filter is removable from the top
  • Improved serviceability with easy access to fan and electrical connections
  • Aluminum Blue Hydrophilic pre-coated fins

LG Alternate Indoor Ductless Units

LCN***HV4

4-Way Cassette Single Zone HV4 Series

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Model Family: LCN***HV4
Purpose: Heat and Cool
Zone Capability: Single Zone and Multizone
Efficiency SEER/SEER2: 21 SEER2
Efficiency EER/EER2: 12.5 EER2
Efficiency HSPF/HSPF2: 10 HSPF2
Matching Outdoor Unit: Single-Zone: LUU***HV
Matching Outdoor Unit: Multi-Zone: Dependent on the number of inside units
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: Up to 5 Fan Speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5 Year Parts Warranty
Manufacturer's Stated Benefits:
  • Inverter variable-speed compressor on the outdoor unit for energy-saving operation
  • Many modes included, controlled through wireless remote or wired wall controller: Cooling, Heating, Dehumidifying, Fan
  • Independent louver control
  • Internal condensate pump included
  • Swirl Wind controls the louvers and fan speeds to create a stronger, wider air flow
  • Jet Cool operates at high fan speeds for 30 minutes to quickly cool down a room
  • Operates down to 5?F in cooling mode
  • Allows refrigerant piping lengths up to 164 or 246 feet (depending on the model), and elevation difference of 98 feet
LD***HV4

Low Static Ducted Indoor Unit

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Model Family: LD***HV4
Purpose: Heat and Cool
Zone Capability: Single Zone and Multizone
Efficiency SEER/SEER2:
Efficiency EER/EER2:
Efficiency HSPF/HSPF2:
Matching Outdoor Unit: Single-Zone: LUU**7HV
Matching Outdoor Unit: Multi-Zone: Dependent on number of inside units
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: 3 Fan Speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5- Year Limited Parts Warranty
Manufacturer's Stated Benefits:
  • ESP control
  • Hot Start
  • Auto restart
  • Two-thermistor control
  • Sleep mode
LH2**HHV4-LH3**HV4

High Static Ducted Indoor Unit

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Model Family: LH2**HHV4-LH3**HV4
Purpose: Heat and Cool
Zone Capability: Single Zone and Multizone
Efficiency SEER/SEER2:
Efficiency EER/EER2:
Efficiency HSPF/HSPF2:
Matching Outdoor Unit: Single-Zone: LUU***HHV
Matching Outdoor Unit: Multi-Zone:
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: 3 Fan Speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year parts limited warranty
Manufacturer's Stated Benefits:
  • Auto operation and auto restart operation
  • Two-thermistor control
  • Inverter variable-speed fan
  • Built-in condensate pump

LG Ductless Outdoor Heat Pumps

38MPRB

Evolution® Heat Pump with Basepan Heater

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Model Family: 38MPRB
Purpose: Heat & Cool
Zone Capability: Single Zone
Efficiency SEER/SEER2: Up to 28.5 SEER2
Efficiency EER/EER2: Up to 16.0 EER2
Efficiency HSPF/HSPF2: Up to 18.0 HSPF2
Energy Star Rated: ENERGY STAR® certified
Refrigerant Type: R410A
Sound Level: As low as 55.5 decibels
Compressor: Inverter Compressor
Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration
Factory Warranty Compressor: 10-year compressor limited warranty to the original purchasing owner upon timely registration
Manufacturer's Stated Benefits:
  • 100% Heating Capacity at 0° F (-17° C)
  • 100% Cooling capacity at -22° F (-30° C) without additional kit
  • Up to 75% of Heating Capacity at -22° F (-30° C)
  • Built-in basepan heater
  • Auto-restart function
  • Refrigerant leakage detection
  • Aluminum Golden Hydrophilic pre-coated fins
  • Heavy-gauge, galvanized steel construction
  • Primed and coated with a 100% coverage, baked-enamel finish in white
38MARB

Preferred Heat Pump with Basepan Heater

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Model Family: 38MARB
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER/SEER2: Up to 28.1 SEER2
Efficiency EER/EER2: up to 16.2 EER2
Efficiency HSPF/HSPF2: Up to 12.4 HSPF2
Energy Star Rated: Some sizes qualified
Refrigerant Type: R-410A
Sound Level: as low as 54 dB(A)
Compressor: Inverter Driven Compressor
Factory Warranty Parts: 10-Year Parts Limited Warranty
Factory Warranty Compressor: 10 year compressor warranty
Manufacturer's Stated Benefits:
  • Built-in basepan heater
  • Available in in 208/230V (9-36K) in 115V(12K)
  • Auto-restart function
  • Anti-corrosive fin coating
  • Piping length up to 213 ft (65m)
38MGRB

Preferred Multi-zone Heat Pump with Basepan Heater

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Model Family: 38MGRB
Purpose: Heat and Cool
Zone Capability: Multi-zone
Efficiency SEER/SEER2: Up to 23.9 SEER2
Efficiency EER/EER2: up to 13.9 EER2
Efficiency HSPF/HSPF2: Up to 10.5 HSPF2
Energy Star Rated: Select sizes are ENERGY STAR® certified based on indoor unit combinations
Refrigerant Type: R410A
Sound Level: As low as 59 dB(A)
Compressor: Inverter Compressor
Factory Warranty Parts: 10-year parts limited warranty
Factory Warranty Compressor: 10-year compressor limited warranty
Manufacturer's Stated Benefits:
  • Built-in base pan heater
  • Auto-restart function
  • Anti-corrosive fin coating
  • Total zones range from 2 to 5 indoor heads
38MHRCQ

Legacy Line Heat Pump

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Model Family: 38MHRCQ
Purpose: Heat & Cool
Zone Capability: Single Zone
Efficiency SEER/SEER2: Up to 21.5 SEER2
Efficiency EER/EER2: Up to 12.6 EER2
Efficiency HSPF/HSPF2: Up to 9.4 HSPF2
Energy Star Rated: N/A
Refrigerant Type: Puron®
Sound Level: As low as 53.5 decibels
Compressor: Inverter Compressor
Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration
Factory Warranty Compressor: 10-year compressor limited warranty to the original purchasing owner upon timely registration
Manufacturer's Stated Benefits:
  • Built-in basepan heater
  • Auto-restart function
  • Refrigerant leakage detection
  • Aluminum Golden Hydrophilic pre-coated fins