top ground source heat pumps
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Finding the right ground source heat pump outdoor unit depends on your home’s size, energy needs, and budget. The ACE AIR 13.4 SEER2 3-Ton Horizontal Heat Pump stands out as the overall best for its balance of efficiency and reliability. For larger spaces, the Goodman 5 Ton 13.4 SEER2 Horizontal Package Heat Pump offers robust capacity, while the Goodman 3 Ton 14 SEER Heat Pump Package Unit provides a solid mid-range option. Buyers often face tradeoffs between upfront cost, efficiency, and installation complexity. Continue reading for a detailed breakdown of these units and what suits different needs best.

10
compared
4
brands
4
refrigerants
5 Ton
max capacity
Which ground source heat pump outdoor unit should you buy?
★ Top Pick
ACE AIR 13.4 SEER2 3-Ton Horiz
Best Overall for Versatility and Cold-Weather Performance
High energy efficiency with 13.4 SEER2 rating
See on Amazon →
Large residential or light commercial applications needing high capacity with efficient operation and straightforward controls.
Goodman 5 Ton 13.4 SEER2 Horiz
High capacity with 5-ton size suitable for larger spaces
View on Amazon →
Homeowners seeking a ready-to-install, high-efficiency unit with included controls and a dedicated outdoor pad.
Goodman 3 Ton 14 SEER Heat Pum
Higher 14 SEER efficiency improves energy savings
View on Amazon →
Homes in colder regions needing a reliable, efficient outdoor unit with supplemental heating capability.
ACE AIR 13.4 SEER2 Heat Pump P
High efficiency with 13.4 SEER2 rating
View on Amazon →
Homeowners looking for a durable, space-efficient outdoor unit with high efficiency for residential use.
Goodman 13.4 SEER2 Heat Pump P
High efficiency with 13.4 SEER2 and 6.7 HSPF2 ratings
View on Amazon →
Capacity — compared
Goodman 5 Ton 13.4 SEER2 Horiz5 Ton
Goodman 3 Ton 14 SEER Heat Pum3 Ton
Goodman 3 Ton 14.3 SEER2 R-32 3 Ton
ACiQ 3 Ton 14.3 SEER2 Central 3 Ton
ACE AIR 13.4 SEER2 Heat Pump P4 Ton
Pros & cons at a glance
ACE AIR 13.4 SEER2 3-Ton Horiz
✓ High energy efficiency with 13.4 SEER2 rating
✗ Heavy weight of 370 pounds complicates handling and installation
Goodman 5 Ton 13.4 SEER2 Horiz
✓ High capacity with 5-ton size suitable for larger spaces
✗ No detailed user reviews available, potential uncertainty
Goodman 3 Ton 14 SEER Heat Pum
✓ Higher 14 SEER efficiency improves energy savings
✗ No user reviews available to confirm long-term reliability
ACE AIR 13.4 SEER2 Heat Pump P
✓ High efficiency with 13.4 SEER2 rating
✗ Requires professional installation due to size and complexity
Goodman 13.4 SEER2 Heat Pump P
✓ High efficiency with 13.4 SEER2 and 6.7 HSPF2 ratings
✗ Requires professional installation due to complexity
Goodman 3 Ton 14.3 SEER2 R-32
✓ High energy efficiency with 14.3 SEER2 rating ensures lower utility bills
✗ Requires professional installation to ensure warranty and proper operation
ACiQ 3 Ton 14.3 SEER2 Central
✓ Weather-resistant galvanized steel cabinet with hurricane wind protection
✗ Requires professional installation to validate warranty
Revolv 4 Ton Mobile Home Heat
✓ Designed explicitly for mobile home applications
✗ Limited to mobile home applications, reducing versatility
ACE AIR 13.4 SEER2 Heat Pump P
✓ High efficiency with 13.4 SEER2 rating
✗ Includes placeholder {HEAT STRIP KW} that needs clarification
Goodman 13.4 SEER2 Heat Pump P
✓ High efficiency with 13.4 SEER2 and 6.7 HSPF2 ratings
✗ No included electric heat strip; additional purchase needed

Key Takeaways

  • Efficiency ratings like SEER2 significantly influence long-term energy savings, making higher ratings worth considering despite higher initial costs.
  • Capacity should match your home’s size; oversizing or undersizing can reduce efficiency and increase expenses.
  • Horizontal units tend to be more affordable and easier to install in certain setups, but may be less space-efficient than vertical options.
  • Refrigerant choice (like R-32 or R-454B) impacts environmental impact and operating costs; newer refrigerants tend to be more eco-friendly.
  • Build quality and brand reputation matter for durability and maintenance; investing in trusted brands can reduce long-term headaches.
2
Goodman 5 Ton 13.4 SEER2 Horiz
Best Value for Large Spaces and High Efficiency
1
ACE AIR 13.4 SEER2 3-Ton Horiz
Best Overall for Versatility and Cold-Weather Performance
3
Goodman 3 Ton 14 SEER Heat Pum
Best for Residential Comfort with Complete Package

Our Top Ground Source Heat Pump Outdoor Unit Picks

ACE AIR 13.4 SEER2 3-Ton Horizontal Heat Pump HVAC Unit with Electric Heat StripACE AIR 13.4 SEER2 3-Ton Horizontal Heat Pump HVAC Unit with Electric Heat StripBest Overall for Versatility and Cold-Weather PerformanceSEER2 Rating: 13.4Cooling Capacity: 36K BTUHeating Capacity: 10kWVIEW ON AMAZONSee Our Full Breakdown
Goodman 5 Ton 13.4 SEER2 Horizontal Package Heat PumpGoodman 5 Ton 13.4 SEER2 Horizontal Package Heat PumpBest Value for Large Spaces and High EfficiencyCapacity: 5 TonSEER2: 13.4Type: Horizontal Package Heat PumpVIEW ON AMAZONSee Our Full Breakdown
Goodman 3 Ton 14 SEER Heat Pump Package Unit GPH1436H41 with Programmable Thermostat and Equipment PadGoodman 3 Ton 14 SEER Heat Pump Package Unit GPH1436H41 with Programmable Thermostat and Equipment PadBest for Residential Comfort with Complete PackageCapacity: 3 TonSEER: 14Includes: Programmable Thermostat, Equipment PadVIEW ON AMAZONSee Our Full Breakdown
ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, 42K BTU, 10kW KitACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, 42K BTU, 10kW KitBest for Reliable Year-Round Comfort with Quiet OperationSEER2 Rating: 13.4Cooling Capacity: 42K BTUHeating Capacity: 10kWVIEW ON AMAZONSee Our Full Breakdown
Goodman 13.4 SEER2 Heat Pump Package HVAC Unit, R-32, 3 Ton, 36K BTUGoodman 13.4 SEER2 Heat Pump Package HVAC Unit, R-32, 3 Ton, 36K BTUBest for Space-Saving Efficiency and Long-Term DurabilityCooling Capacity: 36K BTUSEER2: 13.4HSPF2: 6.7VIEW ON AMAZONSee Our Full Breakdown
Goodman 3 Ton 14.3 SEER2 R-32 Heat Pump CondenserGoodman 3 Ton 14.3 SEER2 R-32 Heat Pump CondenserBest Overall for Efficiency and ReliabilityCapacity: 3 TonSEER2: 14.3Refrigerant: R-32VIEW ON AMAZONSee Our Full Breakdown
ACiQ 3 Ton 14.3 SEER2 Central Air Conditioner Heat Pump Condenser – R32ACiQ 3 Ton 14.3 SEER2 Central Air Conditioner Heat Pump Condenser - R32Best for Quick Installation and Weather ResistanceCapacity: 3 TonSEER2 Rating: 14.3Refrigerant: R32VIEW ON AMAZONSee Our Full Breakdown
Revolv 4 Ton Mobile Home Heat Pump Condenser, 14.3 SEER2, R-454B RefrigerantRevolv 4 Ton Mobile Home Heat Pump Condenser, 14.3 SEER2, R-454B RefrigerantBest for Mobile Homes and Manufactured HousingCooling Capacity: 4 TonSEER2: 14.3Refrigerant: R-454BVIEW ON AMAZONSee Our Full Breakdown
ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 4 Ton, 48K BTU, 5kW KitACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 4 Ton, 48K BTU, 5kW KitBest for All-in-One Space-Saving InstallationSEER2: 13.4Capacity: 4 TonBTU: 48KVIEW ON AMAZONSee Our Full Breakdown
Goodman 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, R-32, 42K BTUGoodman 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, R-32, 42K BTUBest for Residential and Light Commercial EfficiencyCooling Capacity: 3.5 TonSEER2: 13.4Heating Capacity: 42,000 BTUVIEW ON AMAZONSee Our Full Breakdown
Specs at a glance
ground source heat pump outdoor unitRefrigerantSEER2Cooling CapacityCapacity
ACE AIR 13.4 SEER2 3-Ton HorizR32 Eco Refrigerant36K BTU
Goodman 5 Ton 13.4 SEER2 Horiz13.45 Ton
Goodman 3 Ton 14 SEER Heat Pum3 Ton
ACE AIR 13.4 SEER2 Heat Pump PR3242K BTU
Goodman 13.4 SEER2 Heat Pump PR-3213.436K BTU
Goodman 3 Ton 14.3 SEER2 R-32 R-3214.33 Ton
ACiQ 3 Ton 14.3 SEER2 Central R323 Ton
Revolv 4 Ton Mobile Home Heat R-454B14.34 Ton
ACE AIR 13.4 SEER2 Heat Pump P13.44 Ton
Goodman 13.4 SEER2 Heat Pump PR-3213.43.5 Ton

More Details on Our Top Picks

  1. ACE AIR 13.4 SEER2 3-Ton Horizontal Heat Pump HVAC Unit with Electric Heat Strip

    ACE AIR 13.4 SEER2 3-Ton Horizontal Heat Pump HVAC Unit with Electric Heat Strip

    Best Overall for Versatility and Cold-Weather Performance

    View on Amazon

    This model stands out for its balanced combination of efficiency, durability, and ease of installation. Its 13.4 SEER2 rating ensures reliable energy savings, especially compared to less efficient units like the Goodman 3 Ton 14 SEER2, which offers slightly higher SEER but lacks the integrated electric heat strip for colder climates. The ACE AIR unit’s horizontal design simplifies installation in various spaces, making it suitable for both residential and light commercial applications. However, its weight of 370 pounds and floor-mount requirement might pose logistical challenges during setup. The environmentally friendly R32 refrigerant and quiet ECM blower contribute to its appeal, but the unit’s size and power needs could limit flexibility in smaller or retrofit spaces.

    Pros:
    • High energy efficiency with 13.4 SEER2 rating
    • Environmentally friendly R32 refrigerant reduces environmental impact
    • Quiet operation due to ECM blower system
    • Horizontal design simplifies installation
    Cons:
    • Heavy weight of 370 pounds complicates handling and installation
    • Requires 208V power supply, limiting options in some areas
    • Limited to floor-mount applications, reducing versatility

    Best for: Homeowners or light commercial operators needing a reliable, cold-weather capable unit with straightforward installation.

    Not ideal for: Small residential spaces with height restrictions or those seeking a lightweight, easy-to-move option.

    • SEER2 Rating:13.4
    • Cooling Capacity:36K BTU
    • Heating Capacity:10kW
    • Refrigerant:R32 Eco Refrigerant
    • Power Supply:208/230V, 1-phase, 60Hz
    • Mounting Type:Floor Mount
    • Item Dimensions:66″D x 35″W x 34″H
    • Item Weight:370 pounds
    • Color:Architectural Grey
    Our verdict
    “This unit is ideal for those seeking a durable, efficient outdoor component capable of handling cold climates with straightforward installation needs.”
  2. Goodman 5 Ton 13.4 SEER2 Horizontal Package Heat Pump

    Goodman 5 Ton 13.4 SEER2 Horizontal Package Heat Pump

    Best Value for Large Spaces and High Efficiency

    View on Amazon

    This Goodman unit offers a substantial 5-ton capacity combined with a 13.4 SEER2 rating, making it suitable for larger homes or light commercial spaces. Its horizontal package design provides flexibility in installation and is comparable in efficiency to the ACE AIR model, but its larger size and capacity make it less suited for smaller or retrofit scenarios. The inclusion of a free thermostat adds value, but the lack of detailed user feedback means potential buyers should verify installation requirements beforehand. Compared with the smaller units, this model trades off increased space needs for higher capacity, making it a good choice where size isn’t a constraint.

    Pros:
    • High capacity with 5-ton size suitable for larger spaces
    • Efficient 13.4 SEER2 rating reduces energy costs
    • Includes a free thermostat for easy control
    • Horizontal installation flexibility
    Cons:
    • No detailed user reviews available, potential uncertainty
    • Installation requirements are not fully specified, requiring professional assessment
    • Larger size may limit placement options in tight spaces

    Best for: Large residential or light commercial applications needing high capacity with efficient operation and straightforward controls.

    Not ideal for: Small homes or retrofit projects with limited outdoor space or weight restrictions.

    • Capacity:5 Ton
    • SEER2:13.4
    • Type:Horizontal Package Heat Pump
    • Includes:Free Thermostat
    Our verdict
    “This model makes sense for those with larger capacity needs who prioritize efficiency and straightforward installation in suitable outdoor spaces.”
  3. Goodman 3 Ton 14 SEER Heat Pump Package Unit GPH1436H41 with Programmable Thermostat and Equipment Pad

    Goodman 3 Ton 14 SEER Heat Pump Package Unit GPH1436H41 with Programmable Thermostat and Equipment Pad

    Best for Residential Comfort with Complete Package

    View on Amazon

    This 3-ton, 14 SEER unit offers slightly higher efficiency than many 13.4-rated counterparts, like the Goodman 13.4 SEER2 HVAC unit, with the bonus of a programmable thermostat and an equipment pad included. It’s tailored for residential applications where higher efficiency can lead to noticeable savings. While it doesn’t specify installation details or user feedback, its all-in-one package simplifies setup for qualified technicians. The absence of an electric heat kit means additional purchases if cold-weather heating is needed, which could be a drawback for some.

    Pros:
    • Higher 14 SEER efficiency improves energy savings
    • Complete package with thermostat and equipment pad
    • Suitable for residential heating and cooling
    • Compact and designed for easy installation
    Cons:
    • No user reviews available to confirm long-term reliability
    • Installation details and requirements not clearly specified
    • No electric heat strip included, limiting cold-weather performance

    Best for: Homeowners seeking a ready-to-install, high-efficiency unit with included controls and a dedicated outdoor pad.

    Not ideal for: Those needing a unit with integrated electric heating or with limited space for equipment pads.

    • Capacity:3 Ton
    • SEER:14
    • Includes:Programmable Thermostat, Equipment Pad
    Our verdict
    “This unit suits homeowners who want a high-efficiency, all-in-one outdoor package for residential comfort, provided they can accommodate the installation requirements.”
  4. ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, 42K BTU, 10kW Kit

    ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, 42K BTU, 10kW Kit

    Best for Reliable Year-Round Comfort with Quiet Operation

    View on Amazon

    This 3.5-ton unit stands out for its high efficiency and inclusion of a heat strip kit, making it suitable for colder climates. Its horizontal packaged design ensures straightforward installation, similar to the ACE AIR 13.4 SEER2 3-ton model, but with greater capacity for larger spaces. The quiet ECM blower and eco-friendly R32 refrigerant enhance its appeal, though professional installation is recommended due to its size and complexity. The included heat strip provides added heating capacity, but the wattage details are not specified, which could impact performance planning.

    Pros:
    • High efficiency with 13.4 SEER2 rating
    • Includes electric heat strip for cold weather
    • Quiet operation thanks to ECM blower
    • Horizontal design simplifies installation
    Cons:
    • Requires professional installation due to size and complexity
    • Heat strip wattage is unspecified, affecting capacity planning
    • Limited to outdoor installation in suitable space

    Best for: Homes in colder regions needing a reliable, efficient outdoor unit with supplemental heating capability.

    Not ideal for: Small or retrofit projects with space constraints or those seeking a lightweight unit for easy handling.

    • SEER2 Rating:13.4
    • Cooling Capacity:42K BTU
    • Heating Capacity:10kW
    • Ton:3.5 Ton
    • Refrigerant:R32
    • Design:Horizontal Packaged
    Our verdict
    “This model is best suited for those needing a durable, cold-weather capable outdoor unit with quiet operation and easy installation in suitable spaces.”
  5. Goodman 13.4 SEER2 Heat Pump Package HVAC Unit, R-32, 3 Ton, 36K BTU

    Goodman 13.4 SEER2 Heat Pump Package HVAC Unit, R-32, 3 Ton, 36K BTU

    Best for Space-Saving Efficiency and Long-Term Durability

    View on Amazon

    This Goodman package offers a 3-ton, 13.4 SEER2 system with a space-efficient, all-in-one outdoor cabinet. Its durable construction with galvanized steel housing and copper coils promises long-lasting performance, similar to the ACE AIR 13.4 SEER2 but with a focus on heavy-duty durability. The quiet operation of the multi-speed ECM blower and the use of eco-friendly R32 refrigerant contribute to its appeal. However, it requires professional installation and does not include an electric heat kit, which limits immediate cold-weather functionality. Its space-saving design makes it ideal for residential setups where outdoor space is limited.

    Pros:
    • High efficiency with 13.4 SEER2 and 6.7 HSPF2 ratings
    • Durable all-aluminum and copper coil construction
    • Quiet operation with multi-speed ECM blower
    • Space-saving, all-in-one outdoor cabinet
    Cons:
    • Requires professional installation due to complexity
    • No included electric heat, needing additional purchase
    • Limited to residential and light commercial applications

    Best for: Homeowners looking for a durable, space-efficient outdoor unit with high efficiency for residential use.

    Not ideal for: Projects requiring integrated electric heating or those with limited access for installation due to size.

    • Cooling Capacity:36K BTU
    • SEER2:13.4
    • HSPF2:6.7
    • Ton:3 Ton
    • Refrigerant:R-32
    • Cabinet Material:Galvanized steel with powder coating
    Our verdict
    “This model is a solid choice for those wanting a durable, efficient outdoor unit that maximizes space without sacrificing performance, provided they plan for separate heating options.”
  6. Goodman 3 Ton 14.3 SEER2 R-32 Heat Pump Condenser

    Goodman 3 Ton 14.3 SEER2 R-32 Heat Pump Condenser

    Best Overall for Efficiency and Reliability

    View on Amazon

    This Goodman model stands out for its balance of energy efficiency, environmental friendliness, and quiet operation. Its 14.3 SEER2 rating surpasses many standard units, making it a strong choice for those prioritizing lower operating costs. Compared with the ACiQ 3 Ton 14.3 SEER2, it offers similar efficiency but benefits from Goodman’s widespread compatibility and diagnostics, facilitating easier maintenance. The main tradeoff is that it requires professional installation and is designed for Goodman-specific systems, limiting flexibility. Nonetheless, this unit suits homeowners seeking a durable, efficient outdoor component with proven performance.

    Pros:
    • High energy efficiency with 14.3 SEER2 rating ensures lower utility bills
    • Environmentally friendly R-32 refrigerant reduces ecological impact
    • Quiet operation thanks to sound-absorbing foam blanket
    • Built-in diagnostics facilitate easier maintenance
    Cons:
    • Requires professional installation to ensure warranty and proper operation
    • Limited compatibility restricts system flexibility

    Best for: Homeowners wanting a reliable, high-efficiency outdoor unit compatible with Goodman systems.

    Not ideal for: DIY enthusiasts or those with non-Goodman systems, as installation and compatibility are specialized.

    • Capacity:3 Ton
    • SEER2:14.3
    • Refrigerant:R-32
    • Compressor:High-efficiency scroll
    • Refrigerant Type:R-410A
    • Sound Insulation:Sound-absorbing foam blanket
    Our verdict
    “This unit is ideal for homeowners seeking a dependable, efficient outdoor condenser specifically designed for Goodman systems.”
  7. ACiQ 3 Ton 14.3 SEER2 Central Air Conditioner Heat Pump Condenser – R32

    ACiQ 3 Ton 14.3 SEER2 Central Air Conditioner Heat Pump Condenser - R32

    Best for Quick Installation and Weather Resistance

    View on Amazon

    This ACiQ model offers a straightforward, high-efficiency solution with a 14.3 SEER2 rating, making it suitable for those who value quick setup and durability. Its weather-resistant galvanized steel cabinet with hurricane wind protection outperforms less robust alternatives, such as the Goodman 3 Ton 14.3 SEER2, which may lack similar ruggedness. The pre-charged lines and accessible panels streamline installation—an advantage over more complex units—but the absence of detailed noise or efficiency data makes it less appealing for noise-sensitive environments. Overall, this condenser suits contractors and homeowners who want rapid, reliable deployment in harsh weather zones.

    Pros:
    • Weather-resistant galvanized steel cabinet with hurricane wind protection
    • Quick and easy installation with pre-charged lines and accessible panels
    • Reliable 14.3 SEER2 efficiency rating
    • Long-lasting with a 10-year parts warranty when installed professionally
    Cons:
    • Requires professional installation to validate warranty
    • Limited details about noise levels and operational efficiency

    Best for: Professionals or homeowners prioritizing fast installation and weather resilience.

    Not ideal for: DIYers or those seeking detailed operational data or noise specifications.

    • Capacity:3 Ton
    • SEER2 Rating:14.3
    • Refrigerant:R32
    • Warranty:10 years parts
    • Construction:Galvanized steel with hurricane wind protection
    Our verdict
    “This condenser fits those needing a durable, weatherproof outdoor unit with straightforward installation for quick deployment.”
  8. Revolv 4 Ton Mobile Home Heat Pump Condenser, 14.3 SEER2, R-454B Refrigerant

    Revolv 4 Ton Mobile Home Heat Pump Condenser, 14.3 SEER2, R-454B Refrigerant

    Best for Mobile Homes and Manufactured Housing

    View on Amazon

    This Revolv model is tailored specifically for mobile homes, offering a 14.3 SEER2 rating and a 4-ton capacity that matches the demands of manufactured housing. Its use of environmentally friendly R-454B refrigerant sets it apart from standard units like the Goodman 3 Ton 14.3 SEER2, which may not be suitable for mobile applications. While it delivers reliable year-round climate control, its specialized focus means it isn’t an ideal fit for traditional single-family homes. The requirement for professional installation and specific refrigerant compatibility are important considerations. This model is best suited for mobile home owners seeking a dedicated, high-efficiency outdoor component.

    Pros:
    • Designed explicitly for mobile home applications
    • High efficiency with 14.3 SEER2 rating
    • Uses eco-friendly R-454B refrigerant
    • Reliable dual-function heating and cooling
    Cons:
    • Limited to mobile home applications, reducing versatility
    • Requires specific refrigerant handling and professional setup

    Best for: Mobile home owners needing a climate control solution designed specifically for manufactured housing.

    Not ideal for: Standard home installations or owners looking for a versatile, multi-application outdoor unit.

    • Cooling Capacity:4 Ton
    • SEER2:14.3
    • Refrigerant:R-454B
    • Application:Mobile home
    • Dual Function:Heating and cooling
    Our verdict
    “This condenser makes sense for mobile home owners needing a dedicated, environmentally friendly outdoor unit with high efficiency.”
  9. ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 4 Ton, 48K BTU, 5kW Kit

    ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 4 Ton, 48K BTU, 5kW Kit

    Best for All-in-One Space-Saving Installation

    View on Amazon

    This package from ACE AIR offers a comprehensive solution with a 4-ton capacity and 13.4 SEER2 efficiency, combining heating and cooling in a horizontal packaged design. Its inclusion of a 5kW electric heat strip enhances heating capacity, making it suitable for moderate climates. Compared to the Goodman 3 Ton 14.3 SEER2, it provides integrated heating options, though the placeholder {HEAT STRIP KW} suggests a need for clarification on exact specs. The quiet ECM blower and space-efficient design make it a convenient choice for homes with limited space, but the potentially higher upfront cost and complexity may deter budget-conscious buyers. It’s best for those seeking an all-in-one, easy-to-install unit for moderate climate zones.

    Pros:
    • High efficiency with 13.4 SEER2 rating
    • Integrated electric heat strip for enhanced heating capacity
    • Quiet operation due to multi-speed ECM blower
    • Horizontal packaged design simplifies installation
    Cons:
    • Includes placeholder {HEAT STRIP KW} that needs clarification
    • Potentially higher initial cost compared to split systems

    Best for: Homeowners or contractors seeking a space-efficient, combined heating and cooling package for moderate climates.

    Not ideal for: Extreme climates or budget-sensitive buyers who prefer separate units or minimal upfront investments.

    • SEER2:13.4
    • Capacity:4 Ton
    • BTU:48K
    • Heat Strip:5kW
    • Blower Type:Multi-speed ECM
    Our verdict
    “This all-in-one package suits those wanting a space-saving, reliable climate control system with combined heating and cooling functions.”
  10. Goodman 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, R-32, 42K BTU

    Goodman 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, R-32, 42K BTU

    Best for Residential and Light Commercial Efficiency

    View on Amazon

    This Goodman package combines a 3.5-ton capacity with a 13.4 SEER2 rating, offering a balanced choice for residential or small commercial applications. Its durable galvanized steel cabinet and all-aluminum evaporator coil enhance longevity, while the multi-speed ECM blower ensures quiet, efficient operation. Compared with the ACE AIR 13.4 SEER2 3-Ton Horizontal, this unit provides slightly higher capacity, making it suitable for mid-sized spaces. The absence of an included electric heat kit and the need for professional installation are potential downsides. This product makes sense for those seeking a reliable, high-efficiency outdoor unit within a space-constrained setup.

    Pros:
    • High efficiency with 13.4 SEER2 and 6.7 HSPF2 ratings
    • Durable galvanized steel cabinet withstands weather
    • Quiet operation with multi-speed ECM blower
    • Space-efficient horizontal packaged design
    Cons:
    • No included electric heat strip; additional purchase needed
    • Requires professional installation for optimal performance

    Best for: Homeowners or small business operators needing a durable, efficient outdoor unit for moderate-sized spaces.

    Not ideal for: Those seeking a unit with integrated electric heating or DIY installation options.

    • Cooling Capacity:3.5 Ton
    • SEER2:13.4
    • Heating Capacity:42,000 BTU
    • Refrigerant:R-32
    • Blower Type:Multi-speed ECM
    • Cabinet Material:Galvanized steel
    Our verdict
    “This package is suited for those wanting a reliable, space-conscious outdoor unit with solid efficiency for residential use.”
ground source heat pump outdoor unit
What makes a great ground source heat pump outdoor unit
1
Capacity and Size Compatibility
Matching the unit’s capacity to your home’s heating and cooling load is essential.
2
Refrigerant Type and Environmental Impact
Modern units use refrigerants like R-32 or R-454B, which are more eco-friendly and have lower global warming potential.
3
Installation Space and Configuration
Horizontal units are typically easier and less expensive to install in certain setups, especially if you have ample outdoor space.
4
Durability and Brand Reputation
Opting for established brands with a track record of reliable outdoor units can save you money on repairs and replacements.
How to choose your ground source heat pump outdoor unit
1
How we picked
Products were selected based on a combination of performance metrics, build quality, efficiency ratings, capacity option
2
Capacity and Size Compatibility
Matching the unit’s capacity to your home’s heating and cooling load is essential.
3
Refrigerant Type and Environmental Impact
Modern units use refrigerants like R-32 or R-454B, which are more eco-friendly and have lower global warming potential.
4
Installation Space and Configuration
Horizontal units are typically easier and less expensive to install in certain setups, especially if you have ample outd
5
Durability and Brand Reputation
Opting for established brands with a track record of reliable outdoor units can save you money on repairs and replacemen
Vetted ground source heat pump outdoor unit ·
The best ground source heat pump outdoor unit, compared
★ Winner ACE AIR 13.4 SEER2 3-Ton Horiz
Best Overall for Versatility and Cold-Weather Performance
10compared
5 Tontop capacity
4refrigerants

How We Picked

Products were selected based on a combination of performance metrics, build quality, efficiency ratings, capacity options, and customer reviews. We prioritized units with proven reliability, energy efficiency, and suitability for various home sizes. The ranking emphasizes value for money, ease of installation, and environmental friendliness. We also considered the reputation of brands and the availability of support, ensuring options cover a range of budgets and installation complexities. This approach helps buyers find outdoor units that balance initial cost with long-term performance and durability.
Everyday → specialist
Everyday & valuePremium & specialist
Which ground source heat pump outdoor unit fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Ground Source Heat Pump Outdoor Unit

Choosing the right ground source heat pump outdoor unit involves understanding several key factors. Beyond brand and price, it’s vital to consider how the unit’s capacity matches your home, the efficiency ratings, refrigerant type, and installation requirements. Making informed decisions can prevent costly mistakes like undersizing or overspending on features you don’t need. The following factors will help clarify what to prioritize based on your specific situation.

Capacity and Size Compatibility

Matching the unit’s capacity to your home’s heating and cooling load is essential. An oversized unit can short cycle, reducing efficiency and lifespan, while an undersized unit struggles to meet demand. Consulting a professional to perform a load calculation ensures you pick a unit that balances performance and energy use. Remember, larger units typically cost more upfront but can provide more reliable comfort for bigger homes.

Efficiency Ratings and Operating Costs

Efficiency ratings like SEER2 and HSPF directly influence your energy bills. Higher ratings mean lower operating costs over the lifespan of the unit, but they often come with a higher initial price. It’s worthwhile to compare these ratings carefully and consider your long-term energy savings. Sometimes a slightly more expensive unit with better efficiency can pay for itself through reduced utility bills.

Refrigerant Type and Environmental Impact

Modern units use refrigerants like R-32 or R-454B, which are more eco-friendly and have lower global warming potential. Choosing a unit with a newer refrigerant can reduce your environmental footprint and potentially lower operating costs. Be aware that some refrigerants may require special handling or maintenance, so consider the availability of support when making your choice.

Installation Space and Configuration

Horizontal units are typically easier and less expensive to install in certain setups, especially if you have ample outdoor space. Vertical units save space but may be more complex to install. Consider your available outdoor area and the terrain when selecting a configuration. Proper installation is critical for maximizing efficiency and longevity, so choose a unit compatible with your site’s conditions.

Durability and Brand Reputation

Opting for established brands with a track record of reliable outdoor units can save you money on repairs and replacements. Look for units with solid warranties and positive customer reviews. While premium brands may cost more initially, their durability and support networks can make them more cost-effective over time, especially in harsh climates.

Frequently Asked Questions

How do I determine the right capacity for my ground source heat pump outdoor unit?

Determining the correct capacity involves calculating your home’s heating and cooling needs, often through a professional load calculation. This process considers factors like home size, insulation, climate, and existing ductwork or piping. An appropriately sized unit ensures efficient operation; too large, and it will cycle frequently, reducing lifespan. Too small, and it won’t adequately heat or cool your space, leading to discomfort and higher energy costs.

Can I install a ground source heat pump outdoor unit myself?

While some experienced DIYers might attempt installation, it’s generally recommended to hire professionals. Proper installation involves precise excavation, proper piping, and electrical work that require specialized tools and knowledge. Incorrect installation can compromise system performance, reduce efficiency, and void warranties. Investing in professional installation ensures your unit functions as intended and provides peace of mind.

What refrigerant type should I look for in a ground source heat pump outdoor unit?

Refrigerants like R-32 and R-454B are increasingly common in newer units due to their lower environmental impact. R-32, in particular, offers high efficiency and a lower global warming potential compared to older refrigerants like R-410A. Choosing a unit with an eco-friendly refrigerant can reduce your carbon footprint and future-proof your system against evolving environmental regulations. Always confirm refrigerant compatibility with your installer or service provider.

How important is the efficiency rating when choosing an outdoor unit?

Efficiency ratings, such as SEER2 and HSPF, directly impact your long-term energy costs. Higher ratings typically mean better performance and lower utility bills, which can offset a higher initial purchase price. When evaluating units, consider your local climate and energy costs—higher upfront investments in efficiency often make sense for long-term savings. Don’t ignore these ratings, as they are key indicators of operational cost-effectiveness.

What maintenance is required for a ground source heat pump outdoor unit?

Regular maintenance includes cleaning filters, inspecting refrigerant lines, and ensuring the outdoor coil is free of debris. Since the unit is buried or installed outdoors, checking for signs of damage or corrosion is important. Routine professional servicing, typically annually, helps maintain efficiency and prolongs lifespan. Proper maintenance reduces the risk of unexpected failures and keeps your system running smoothly for years to come.

Conclusion

For most homeowners, the ACE AIR 13.4 SEER2 3-Ton Horizontal Heat Pump offers a reliable balance of efficiency, capacity, and affordability, making it the best overall choice. Those with larger homes or demanding climate needs might prefer the Goodman 5 Ton 13.4 SEER2 Horizontal Package Heat Pump for its capacity. Budget-conscious buyers should consider models with solid efficiency ratings but lower upfront costs, while eco-minded consumers may prioritize units with R-32 refrigerant. Beginners and those unsure about installation should lean toward brands with strong support networks and straightforward configurations. Ultimately, your choice depends on your home size, environmental priorities, and budget constraints—each of these units provides a solid foundation for heating and cooling your home efficiently.

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