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 Hely Heating and Air Conditioning 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 636-305-9555.

Ductless Outdoor Heat Pumps

NAXSPB

NAXSPB Outdoor Ductless Heat Pump

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Model Family: NAXSPB
Purpose: Heat & Cool
Zone Capability: Single zone
Efficiency SEER2: Up to 33.1 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 13.5 HSPF2
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Sound Level: Quiet operation
Compressor: INVERTER-driven compressor
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Factory Warranty Compressor: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Double-vane air delivery for enhanced circulation
  • 3D i-see Sensor™
  • Infrared human sensing technologies to measure location of human heat signatures
  • Multi-function wireless controller
  • Available capacities in kBtu/h: 06, 09, 12, 15, 18
  • Hyper-heating performance down to -13° F outdoor ambient
NAXSST

NAXSST Outdoor Ductless Heat Pump

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Model Family: NAXSST
Purpose: Heat & Cool
Zone Capability: Single zone
Efficiency SEER2: Up to 24.6 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 12.8 HSPF2
Energy Star Rated: ENERGY STAR® certified
Refrigerant Type: R-410A
Sound Level: Quiet operation
Compressor: INVERTER-driven compressor
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Factory Warranty Compressor: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Auto restart and auto cooling/heating changeover
  • Vertical air swing on all units
  • Compatible with kumo cloud® control app and Thermostat Interface
NAXSMT

NAXSMT Pro Line Outdoor Ductless Heat Pump

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Model Family: NAXSMT
Purpose: Heat & Cool
Zone Capability: Single zone
Efficiency SEER2: Up to 18 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 10 HSPF2
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Sound Level: Quiet operation
Compressor: INVERTER-driven compressor
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Factory Warranty Compressor: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Four fan speeds
  • Anti-mold filter
  • INVERTER-driven heat pump
NAXSKS

NAXSKS Outdoor Ductless Heat Pump

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Model Family: NAXSKS
Purpose: Heat & Cool
Zone Capability: Single zone
Efficiency SEER2: N/A
Efficiency EER2: N/A
Efficiency HSPF2: N/A
Energy Star Rated: No
Refrigerant Type: R-410A
Sound Level: Quiet operation
Compressor: INVERTER-driven compressor
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Factory Warranty Compressor: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Provides cooling and heating in a wide range of capacities
  • Ventilation air knockouts
  • Built-in condensate lift mechanism
  • Multiple airflow adjustments

Ductless High Wall Indoor Heat Pumps

NAXWPH

NAXWPH Indoor Ductless High Efficiency Heat Pump

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Model Family: NAXWPH
Purpose: Heat & Cool
Zone Capability: Single & Multi Zone
Efficiency SEER2: Up to 33.1 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 13.5 HSPF2
Matching Outdoor Unit: Single-Zone: NAXSPB
Matching Outdoor Unit: Multi-Zone: NAXMMX
Energy Star Rated: Energy Star Rated
Refrigerant Type: R-410A
Number of Fan Speeds: N/A
Sound Level: Quiet operation
Wireless Remote: Multi-function wireless controller
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • 100% heating at 5° F
  • Hyper-heating performance down to -13° F outdoor ambient
  • Double-vane air delivery for enhanced circulation
  • 3D i-see Sensor™
  • Infrared human sensing technologies to measure location of human heat signatures
NAXWST

NAXWST Indoor Ductless Wall-Mounted Heat Pump

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Model Family: NAXWST
Purpose: Heat & Cool
Zone Capability: Single zone and multi zone
Efficiency SEER2: Up to 24.6 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 12.8HSPF2
Matching Outdoor Unit: Single-Zone: NAXSST
Matching Outdoor Unit: Multi-Zone: NAXMMX
Energy Star Rated: ENERGY STAR® certified
Refrigerant Type: R-410A
Number of Fan Speeds: Vertical air swing
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • INVERTER-driven compressor
  • Auto restart and auto cooling/heating changeover
  • Vertical air swing on all units
  • Compatible with kumo cloud® control app and Thermostat Interface
  • Provides instant warmth even in extreme climates (down to -13° F)
NAXWMT

NAXWMT Indoor Ductless Pro Line Heat Pump

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Model Family: NAXWMT
Purpose: Heat & Cool
Zone Capability: Single Zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Matching Outdoor Unit: Single-Zone: NAXSMT
Matching Outdoor Unit: Multi-Zone: N/A
Energy Star Rated: Energy Star Rated
Refrigerant Type: R-410A
Number of Fan Speeds: Four fan speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Anti-mold filter
  • INVERTER-driven heat pump
  • Available capacities in kBtu/h: 09, 12, 15, 18, 24
MSZ-EF

MSZ-EF Designer Indoor Unit

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Model Family: MSZ-EF
Purpose: Heat and Cool
Zone Capability: Single Zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Matching Outdoor Unit: Single-Zone:
Matching Outdoor Unit: Multi-Zone:
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: Vertical air swing
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year parts limited warranty
Manufacturer's Stated Benefits:
  • Available capacities in kBtu/h: 9, 12, 15, 18
  • Three colors to choose from: glossy white, matte silver and glossy black

Ductless High Wall Indoor Air Conditioners

NAYWST

NAY Air Conditioner

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Model Family: NAYWST
Purpose: Cooling
Zone Capability: Single Zone
Efficiency SEER2: Up to 24.6 SEER2
Efficiency EER2: N/A
Matching Outdoor Unit: Single-Zone: NAYSST
Matching Outdoor Unit: Multi-Zone: N/A
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Number of Fan Speeds: Vertical air swing on all units
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts
Manufacturer's Stated Benefits:
  • Cleaner Air with washable anti-allergen filters
  • Compatible with kumo cloud® control app and Thermostat Interface
  • Available capacities in kBtu/h: 09, 12, 15, 18, 24, 30, 36
  • Offers a wide vane for a wider angle of airflow, 150° from left to right

Ductless Outdoor Air Conditioners

NAYSST

NAYSST Air Conditioner Outdoor Unit

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Model Family: NAYSST
Purpose: Cool Only
Efficiency SEER2: Up to 24.6 SEER2
Efficiency EER2: N/A
Zone Capability: Single Zone
Energy Star Rated: ENERGY STAR® certified
Refrigerant Type: R-410A
Sound Level: Quiet operation
Compressor: Inverter- Driven Compressor
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Factory Warranty Compressor: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Compatible with the ST Series indoor unit
  • Available capacities in kBtu/h: 09, 12, 15, 18, 24, 30, 36

American Standard Alternate Indoor Ductless Units

NAXCKS

NAXCKS Indoor Ductless Ceiling Cassette Heat Pump

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Model Family: NAXCKS
Purpose: Heat & Cool
Zone Capability: Single & Multi Zone
Efficiency SEER2: Up to 16 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 9.6 HSPF2
Matching Outdoor Unit: Single-Zone: NAXWST, NAXWPH,NAXWMT
Matching Outdoor Unit: Multi-Zone: NAXWST, NAXWPH,NAXWMT
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: N/A
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • INVERTER-driven compressor
  • Provides cooling and heating in a wide range of capacities
  • Ventilation air knockouts
  • Built-in condensate lift mechanism
  • Multiple airflow adjustments
  • Available capacities in kBtu/h: 09, 12, 15
PEAD

PEAD Indoor Horizontal-Ducted Heat Pump

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Model Family: PEAD
Purpose: Heat & Cool
Zone Capability: Single & Multi Zone
Efficiency SEER2: up to 21.1 SEER
Efficiency EER2: N/A
Efficiency HSPF2: up to 13.0 HSPF
Matching Outdoor Unit: Single-Zone: NAXWST, NAXWPH,NAXWMT
Matching Outdoor Unit: Multi-Zone: NAXMMX
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: N/A
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • INVERTER-driven compressor
  • Built-in condensate lift mechanism (up to 27-9/16
  • Static capability up to 0.60 in. wg
  • Option filter box with MERV-13 filters
  • Interlock with Lossnay
  • 2-stages of supplemental heat control
NAXFKS

NAXFKS Indoor Ductless Floor-Mounted Heat Pump

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Model Family: NAXFKS
Purpose: Heat & Cool
Zone Capability: Single & Multi Zone
Efficiency SEER2: Up to 28.2 SEER2
Efficiency EER2: N/A
Efficiency HSPF2: Up to 13 HSPF2
Matching Outdoor Unit: Single-Zone: NAXWST, NAXWPH,NAXWMT
Matching Outdoor Unit: Multi-Zone: NAXWST, NAXWPH,NAXWMT
Energy Star Rated: Energy Star Rated
Refrigerant Type: R-410A
Number of Fan Speeds: N/A
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 10-year limited warranty on compressor and functional parts.
Manufacturer's Stated Benefits:
  • Rapid heating
  • Operates with 25% less power than competing models
  • Recessing is an option
  • Available capacities in kBtu/h: 09, 12, 15, 18