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 The Furnace Guys 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 (406) 777-2665.

Ductless High Wall Indoor Heat Pumps

 DHZ**NWB21S

Z Series Single-Zone

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Model Family: DHZ**NWB21S
Purpose: Heat and Cool
Zone Capability: Single-zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Matching Outdoor Unit: Single-Zone: DHZ**CSB21S
Matching Outdoor Unit: Multi-Zone: N/A
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Number of Fan Speeds: Variable fan speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year parts limited warranty
Manufacturer's Stated Benefits:
  • 80% heating capacity at -22?F
  • Single-zone inverter heat pump
  • 7-year compressor limited warranty
  • Set temperature and humidity levels to improve your comfort level.
  • Ultra-high-efficiency inverter technology cuts cooling costs nearly 63% compared to typical central air conditioning systems.
  • Built-in diagnostics and shut-off controls ensure worry-free performance.
  • Quiet operation with no harsh stops and starts.
DHX**NWB11S

X Series Single- Zone

View Brochure
Model Family: DHX**NWB11S
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Matching Outdoor Unit: Single-Zone: DHX**CSB21S
Matching Outdoor Unit: Multi-Zone: N/A
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Number of Fan Speeds: Variable fan speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year parts limited warranty
Manufacturer's Stated Benefits:
  • Ultra-quiet variable-speed fan
  • Low ambient cooling to -4 Degree F
  • Single-zone inverter heat pump
  • 7-year compressor limited warranty
  • Set temperature and humidity levels to improve your comfort level.
  • Four-way airflow
  • Built-in diagnostics and shut-off controls ensure worry-free performance.
  • Quiet operation with no harsh stops and starts.
W Series Wall Mount

W Series Multi-Zone

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Model Family: W Series Wall Mount
Purpose: Heat and Cool
Zone Capability: Connects up to five zones
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Matching Outdoor Unit: Single-Zone: N/A
Matching Outdoor Unit: Multi-Zone: DHW18CMB21S
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: Variable fan speeds
Sound Level: Quiet operation
Wireless Remote: Yes
Factory Warranty Parts: 5-year parts limited warranty
Manufacturer's Stated Benefits:
  • 7-year compressor limited warranty
  • Multi-zone inverter heat pump
  • Minimize installation costs with a duct-free design that uses 208/230V current.
  • Enjoy the quiet outdoors thanks to a variable-speed compressor.
  • Built-in diagnostics and shut-off controls ensure worry-free performance.
DHR**NKB21S

R Series Single-Zone

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Model Family: DHR**NKB21S
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Matching Outdoor Unit: Single-Zone: DHR**CSB21S
Matching Outdoor Unit: Multi-Zone: N/A
Energy Star Rated: No
Refrigerant Type: R-410A
Number of Fan Speeds: Variable fan speeds
Sound Level: As low as 56 decibels
Wireless Remote: Yes
Factory Warranty Parts: 5-year parts limited warranty
Manufacturer's Stated Benefits:
  • 7-year compressor limited warranty
  • Low ambient cooling to 0 Degee F

DHZ**CSB21S

MODEL # Z Series Single-Zone

View Brochure
Model Family: DHZ**CSB21S
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Sound Level: outdoor sound levels at 53 decibels
Compressor: Ultra-high-efficiency inverter
Factory Warranty Parts: 5 year parts limited warranty
Factory Warranty Compressor: Standard Warranty: 7 year compressor
Manufacturer's Stated Benefits:
  • Quiet operation with no harsh stops and starts.
  • Built-in diagnostics and shut-off controls ensure worry-free performance.
  • Provides 80% heating capacity even at -22°F.
DHX**CSB**S

MODEL # X Series Single-Zone

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Model Family: DHX**CSB**S
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Energy Star Rated: ENERGY STAR®
Refrigerant Type: R-410A
Sound Level: sound levels as low as 53 decibels.
Compressor: Inverter Driven Compressor
Factory Warranty Parts: 5 year parts limited warranty
Factory Warranty Compressor: Standard Warranty: 7 year compressor
Manufacturer's Stated Benefits:
  • Heavy-gauge steel frame and anti-corrosion coating protect outdoor unit.
  • Defrosts as needed for reliable performance and energy savings.
  • Quiet operation with no harsh stops and starts.
DHW**CMB21S

MODEL # W Series Multi-Zone

View Brochure
Model Family: DHW**CMB21S
Purpose: Heat and Cool
Zone Capability: Multi-zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Energy Star Rated: No
Refrigerant Type: R-410A
Sound Level: Quiet operation
Compressor: Inverter Driven Compressor
Factory Warranty Parts: 5 year parts limited warranty
Factory Warranty Compressor: 7-Year Limited Warranty on the compressor
Manufacturer's Stated Benefits:
  • Built-in diagnostics and shut-off controls ensure worry-free performance
  • Quiet operation with no harsh stops and starts
DHR**CSB21S

MODEL # R Series Single-Zone

View Brochure
Model Family: DHR**CSB21S
Purpose: Heat and Cool
Zone Capability: Single zone
Efficiency SEER2:
Efficiency EER2:
Efficiency HSPF2:
Energy Star Rated: No
Refrigerant Type: R-410A
Sound Level: sound levels as low as 56 decibels
Compressor: Inverter Driven Compressor
Factory Warranty Parts: 5 year parts limited warranty
Factory Warranty Compressor: 7-Year Limited Warranty on the compressor
Manufacturer's Stated Benefits:
  • Heavy-gauge steel frame and anti-corrosion coating protect outdoor unit.
  • Get dependable cooling operation at outdoor temperatures as low as 0°F.
  • Quiet operation with no harsh stops and starts.