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

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 Prairie Mechanical Services 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 306-648-3469.
Ductless High Wall Indoor Heat Pumps
Evolution® Indoor Ductless High Wall UnitView Brochure |
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| Model Family: 615PHA |
| Purpose: Heat & Cool |
| Zone Capability: Single Zone and Multizone |
| Efficiency SEER2: Dependent upon outdoor unit pairing |
| Efficiency EER2: Dependent upon outdoor unit pairing |
| Efficiency HSPF2: Dependent upon outdoor unit pairing |
| Matching Outdoor Unit: Single-Zone: 37MPRA, 37MAHA |
| Matching Outdoor Unit: Multi-Zone: 37MGHA |
| Energy Star Certified: ENERGY STAR® certified |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: Fully modulating fan speeds |
| Sound Level: Sound: as low as 16 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:
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Preferred™ High Wall Indoor UnitView Brochure |
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| Model Family: 615AHA |
| Purpose: Heat and Cool |
| Zone Capability: Single zone |
| Efficiency SEER2: Dependent upon outdoor unit pairing |
| Efficiency EER2: Dependent upon outdoor unit pairing |
| Efficiency HSPF2: Dependent upon outdoor unit pairing |
| Matching Outdoor Unit: Single-Zone: 37MGRA |
| Matching Outdoor Unit: Multi-Zone: 37MBRA, 37MARA |
| Energy Star Certified: Select systems with ENERGY STAR® certification |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: 4 |
| Sound Level: Quiet Levels As low as 16 decibels |
| Wireless Remote: Yes |
| Factory Warranty Parts: 10-Year Parts Limited Warranty |
Manufacturer's Stated Benefits:
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Legacy™ Line High Wall Indoor Unit |
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| Model Family: 45MHHAQ |
| Purpose: Heat & Cool |
| Zone Capability: Single Zone and Multizone |
| Efficiency SEER2: Dependent upon outdoor unit pairing |
| Efficiency EER2: Dependent upon outdoor unit pairing |
| Efficiency HSPF2: Dependent upon outdoor unit pairing |
| Matching Outdoor Unit: Single-Zone: 37MHRAQ |
| Matching Outdoor Unit: Multi-Zone: N/A |
| Energy Star Certified: No |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: Four fan speeds |
| Sound Level: Sound levels as low as 18.5 decibels |
| Wireless Remote: Yes |
| Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration |
Manufacturer's Stated Benefits:
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Ductless Outdoor Heat Pump
Legacy™ Line Air ConditionerView Brochure |
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| Model Family: 37MHRAC |
| Purpose: Cooling |
| Efficiency SEER2: Up to 22.2 SEER2 |
| Efficiency EER2: Up to 12.5 EER2 |
| Zone Capability: Single Stage |
| Energy Star Certified: Select sizes qualified |
| Refrigerant Type: Puron Advance |
| Sound Level: Sound levels as low as 52 decibels |
| Compressor: Inverter Compressor |
| Factory Warranty Parts: 10-year parts limited warranty upon registration |
| Factory Warranty Compressor: 10-year compressor limited warranty upon registration |
Manufacturer's Stated Benefits:
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Ductless High Wall Indoor Air Conditioners
Legacy Line™ Indoor Ductless High Wall Cooling-Only Unit |
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| Model Family: 45MHHAC |
| Purpose: Cool Only |
| Zone Capability: Single Zone |
| Efficiency SEER2: Dependent upon outdoor unit pairing |
| Efficiency EER2: Dependent upon outdoor unit pairing |
| Matching Outdoor Unit: Single-Zone: 37MHRAC |
| Matching Outdoor Unit: Multi-Zone: N/A |
| Energy Star Certified: No |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: Up to 4 Fan Speeds |
| Sound Level: Sound levels as low as 19 decibels |
| Wireless Remote: Yes |
| Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration |
Manufacturer's Stated Benefits:
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Ductless Outdoor Air Conditioners
Evolution® Heat Pump with Basepan HeaterView Brochure |
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| Model Family: 37MPRA |
| Purpose: Heat & Cool |
| Zone Capability: Single Zone |
| Efficiency SEER2: Up to 35.1 SEER2 |
| Efficiency EER2: Up to 17.5 EER2 |
| Efficiency HSPF2: Up to 30 HSPF2 |
| Energy Star Certified: ENERGY STAR® certified |
| Refrigerant Type: Puron Advance |
| Sound Level: Outdoor sound: as low as 57 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:
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Preferred Heat Pump with Basepan HeaterView Brochure |
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| Model Family: 37MARA |
| Purpose: Heat and Cool |
| Zone Capability: Single zone |
| Efficiency SEER2: Up to 26 SEER2 |
| Efficiency EER2: up to 16.3 EER2 |
| Efficiency HSPF2: up to 13.9 HSPF2 |
| Energy Star Certified: Select sizes are ENERGY STAR® certified based on indoor unit pairing |
| Refrigerant Type: Puron Advance |
| Sound Level: Quiet Levels as low as 52.5 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:
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Preferred Multi-zone Heat Pump with Basepan HeaterView Brochure |
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| Model Family: 37MGRA |
| Purpose: Heat and Cool |
| Zone Capability: Multi-zone |
| Efficiency SEER2: Up to 25.2 SEER2 |
| Efficiency EER2: up to 14 EER2 |
| Efficiency HSPF2: up to 10.4 HSPF2 |
| Energy Star Certified: Select sizes are ENERGY STAR® certified based on indoor unit combinations |
| Refrigerant Type: Puron Advance |
| Sound Level: As low as 59.5 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:
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Legacy Line Heat PumpView Brochure |
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| Model Family: 37MHRAQ |
| Purpose: Heat & Cool |
| Zone Capability: Single Zone |
| Efficiency SEER2: Up to 22.4 SEER2 |
| Efficiency EER2: Up to 12.6 EER2 |
| Efficiency HSPF2: Up to 9.4 HSPF2 |
| Energy Star Certified: N/A |
| Refrigerant Type: Puron Advance |
| Sound Level: Sound levels as low as 52.5 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:
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Bryant Alternate Indoor Ductless Units
PREFERRED® DUCTLESS 4-WAY CASSETTE WITH PURON ADVANCEView Brochure |
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| Model Family: 45MBCA |
| Purpose: Heat and Cool |
| Zone Capability: Single Zone |
| Efficiency SEER2: Up to 23.7 SEER2 |
| Efficiency EER2: Up to 18.0 EER2 |
| Efficiency HSPF2: Up to 12.4 HSPF |
| Matching Outdoor Unit: Single-Zone: 37MAHAQ Heat Pump |
| Matching Outdoor Unit: Multi-Zone: 37MGRA |
| Energy Star Certified: ENERGY STAR® |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: Three fan speeds |
| Sound Level: Silent mode indoor operation as low as 23.5 dB(A) |
| Wireless Remote: Yes |
| Factory Warranty Parts: 10-year parts limited warranty |
Manufacturer's Stated Benefits:
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Preferred™ Ducted Indoor UnitView Brochure |
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| Model Family: 45MBDA |
| Purpose: Heat & Cool |
| Zone Capability: Single and Multi Zone |
| Efficiency SEER2: Dependent upon outdoor unit pairing |
| Efficiency EER2: Dependent upon outdoor unit pairing |
| Efficiency HSPF2: Dependent upon outdoor unit pairing |
| Matching Outdoor Unit: Single-Zone: 37MARA |
| Matching Outdoor Unit: Multi-Zone: 37MGRA |
| Energy Star Certified: N/A |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: Three Fan Speeds |
| Sound Level: Sound levels as low as 22 decibels |
| Wireless Remote: Yes |
| Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration |
Manufacturer's Stated Benefits:
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Preferred™ Ceiling/Floor Console Indoor UnitView Brochure |
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| Model Family: 45MCFA |
| Purpose: Heat & Cool |
| Zone Capability: Single and Multi Zone |
| Efficiency SEER2: Dependent upon outdoor unit pairing |
| Efficiency EER2: Dependent upon outdoor unit pairing |
| Efficiency HSPF2: Dependent upon outdoor unit pairing |
| Matching Outdoor Unit: Single-Zone: 37MARA |
| Matching Outdoor Unit: Multi-Zone: 37MGRA |
| Energy Star Certified: N/A |
| Refrigerant Type: Puron Advance |
| Number of Fan Speeds: Three fan speeds |
| Sound Level: Sound levels 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:
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