Choosing a heat pump with low GWP refrigerant is essential for reducing environmental impact while maintaining reliable heating and cooling. The Klimaire 3 Ton Inverter Heat Pump System stands out as the best overall due to its efficiency and eco-friendly refrigerant. The Goodman 1.5 Ton 15.2 SEER2 System offers excellent value for smaller homes, while the MrCool VersaPro provides a straightforward solution for those new to low-GWP options. However, tradeoffs include higher upfront costs for premium models or limited capacity for smaller units. Keep reading for a detailed breakdown of these options to find the best fit for your needs.
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Key Takeaways
- Top-performing units balance efficiency with refrigerant GWP levels, favoring R-32 or newer low-GWP options.
- Size and capacity are critical; selecting a system that matches your space prevents overspending and inefficiency.
- Higher upfront costs often correlate with better eco-friendly refrigerant choices and efficiency ratings.
- Ease of installation and maintenance can vary widely, impacting long-term satisfaction.
- The best options combine low GWP refrigerants with reliable performance and good warranty support.
| Klimaire 3 Ton Inverter Heat Pump System – 36,000 BTU Central Ducted HVAC |  | Best Overall for Energy Efficiency and Low-GWP Refrigerant | Cooling Power: 36,000 BTU | SEER: 19 | Capacity: 3 tons | VIEW ON AMAZON | See Our Full Breakdown |
| Goodman 1.5 Ton 15.2 SEER2 Heat Pump System with Multi-Position Air Handler GLZS4BA1810 and AMST24BU1300 |  | Best Value for Durability and Reliability in Low-GWP Refrigerant Systems | Capacity: 1.5 Ton | SEER: 15.2 | Refrigerant: R-32 | VIEW ON AMAZON | See Our Full Breakdown |
| Rellytech Mini Split AC/Heating System 12000 BTU Heat Pump, 20 SEER2, 115V |  | Best for Small Spaces and Extreme Temperature Performance | BTU: 12000 | SEER2: 20 | Voltage: 115V | VIEW ON AMAZON | See Our Full Breakdown |
| Goodman 2.5 Ton 14.3 SEER2 Heat Pump System with Multi-Position Air Handler |  | Best for Moderate Climates and Easy Installation | Cooling Capacity: 2.5 Ton | SEER2: 14.3 | Refrigerant: R-32 | VIEW ON AMAZON | See Our Full Breakdown |
| 3 Ton 14.3 SEER2 Mobile Home Heat Pump Unit & Coil AC System, 30′ Kit |  | Best for Mobile Homes and Easy Installation Kits | Capacity: 3 Ton | SEER: 14.3 | Application: Mobile Home | VIEW ON AMAZON | See Our Full Breakdown |
| ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3 Ton – 36K BTU – 10kW Kit |  | Best Overall for Versatile, Eco-Friendly HVAC Solutions | SEER2 Rating: 13.4 | Refrigerant: R32 Eco Refrigerant | Capacity: 36K BTU / 3 Ton | VIEW ON AMAZON | See Our Full Breakdown |
| 15,000 BTU Distinctions by Amana PTAC Heat Pump A/C 5kW | 30 A |  | Best for Compact, Easy-Install Year-Round Comfort | Cooling Capacity: 14,700 BTU | Heating Capacity: 13,500 BTU | Electric Power: 5 kW | VIEW ON AMAZON | See Our Full Breakdown |
| ACiQ 4 Ton 13.4 SEER2 Packaged Heat Pump System with 10kW & Install Kit |  | Best for Heavy-Duty, Quiet Performance in Residential/Commercial Settings | Cooling Power: 48000 BTU | Refrigerant: R-32 | Noise Level: 80 db | VIEW ON AMAZON | See Our Full Breakdown |
| Goodman 2 Ton 14.3 SEER2 Multi-Position R-32 Heat Pump System with Air Handler |  | Best for Versatile, Long-Lasting Residential Comfort | Cooling Power: 24000 BTU | SEER: 14.3 | Refrigerant: R-32 | VIEW ON AMAZON | See Our Full Breakdown |
| Goodman 4 Ton 15.2 SEER Heat Pump Split System with R-32 Refrigerant and 10kW Heat Kit |  | Best for Large Homes with Cold Climate Readiness | Capacity: 4 Ton | SEER: 15.2 | Refrigerant: R-32 | VIEW ON AMAZON | See Our Full Breakdown |
| 12000 BTU Mini Split AC/Heating System, 17 SEER2, 115V |  | Best for Small Spaces and Flexibility | Cooling Power: 12000 BTU | SEER2: 17 | Voltage: 115V | VIEW ON AMAZON | See Our Full Breakdown |
| Goodman 3.5 Ton 14.3 SEER2 R-32 Heat Pump Condenser |  | Best for Larger Homes and Retrofit Projects | Cooling Power: 42000 BTU | SEER2: 14.3 | Refrigerant: R-32 | VIEW ON AMAZON | See Our Full Breakdown |
| MrCool SEER2 VersaPro Central Ducted Split System |  | Best for Flexible, High-Efficiency Whole-House Systems | SEER2: 15.2-18.8 | Refrigerant: R454B | Line set length: 35 feet | VIEW ON AMAZON | See Our Full Breakdown |
| ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, 42K BTU, 10kW Kit | | Best for Easy Installation and Reliable Year-Round Comfort | SEER2: 13.4 | Ton: 3.5 | BTU: 42,000 | VIEW ON AMAZON | See Our Full Breakdown |
| ACiQ 3 Ton 13.4 SEER2 Packaged Heat Pump System with 7.5kW & Install Kit | | Best for Commercial-Grade Efficiency and Complete Installation Package | Capacity: 3 Ton | SEER2: 13.4 | Refrigerant: R32 | VIEW ON AMAZON | See Our Full Breakdown |
| heat pump with low gwp refrigerant | Refrigerant |
|---|---|
| Klimaire 3 Ton Inverter Heat P | R454B |
| Goodman 1.5 Ton 15.2 SEER2 Hea | R-32 |
| Rellytech Mini Split AC/Heatin | R454B |
| Goodman 2.5 Ton 14.3 SEER2 Hea | R-32 |
| 3 Ton 14.3 SEER2 Mobile Home H | R-454B |
| ACE AIR 13.4 SEER2 Heat Pump P | R32 Eco Refrigerant |
| 15,000 BTU Distinctions by Ama | R-32 |
| ACiQ 4 Ton 13.4 SEER2 Packaged | R-32 |
| Goodman 2 Ton 14.3 SEER2 Multi | R-32 |
| Goodman 4 Ton 15.2 SEER Heat P | R-32 |
| 12000 BTU Mini Split AC/Heatin | R-32 |
| Goodman 3.5 Ton 14.3 SEER2 R-3 | R-32 |
| MrCool SEER2 VersaPro Central | R454B |
| ACE AIR 13.4 SEER2 Heat Pump P | — |
| ACiQ 3 Ton 13.4 SEER2 Packaged | R32 |
More Details on Our Top Picks
Klimaire 3 Ton Inverter Heat Pump System – 36,000 BTU Central Ducted HVAC
This Klimaire model stands out for combining high energy efficiency with the use of R454B refrigerant, a low-GWP alternative to traditional options. Its inverter technology allows for precise temperature control, making it ideal for both residential and light-commercial settings. Compared to the Goodman 2.5 Ton system, it offers a higher SEER of 19, translating into lower operating costs, but its complex installation process and need for a separate line set could be a hurdle for DIY enthusiasts. The quiet operation at 58 dB is an additional benefit for homes or offices demanding minimal noise. While it doesn’t include a factory filter, its durable build and environmentally friendly refrigerant make it a solid long-term choice.
Pros:- High energy efficiency with 19 SEER rating reduces operational costs
- Flexible multi-position installation for various building layouts
- Quiet operation at 58 dB enhances indoor comfort
- Uses low-GWP refrigerant R454B for environmental benefits
Cons:- Requires purchase of separate line set, adding to overall cost
- Installation complexity may necessitate professional help
- No factory-installed filter included, requiring additional purchase
Best for: Homeowners or small business owners seeking high efficiency and environmentally friendly refrigerant options with flexible installation.
Not ideal for: DIY installers or those looking for a plug-and-play system, due to complex installation requirements and additional components needed.
- Cooling Power:36,000 BTU
- SEER:19
- Capacity:3 tons
- Refrigerant:R454B
- Voltage:230 volts
- Wattage:3,634 watts
- Noise:58 dB
- Application:Residential, Commercial
- Line Set Required:3/8″ x 3/4″
Our verdict“This model suits those prioritizing efficiency and low environmental impact, willing to handle or pay for professional installation.”
Goodman 1.5 Ton 15.2 SEER2 Heat Pump System with Multi-Position Air Handler GLZS4BA1810 and AMST24BU1300
This Goodman system combines a 1.5-ton, 15.2 SEER2 heat pump with a corrosion-resistant multi-position air handler, offering a reliable solution for moderate climates. Its use of R-32 refrigerant, a lower-GWP alternative, is a key advantage over systems like the Klimaire, which uses R454B, though R-32 is more common and easier to source. It provides solid efficiency for its size, and the 10-year parts warranty adds peace of mind. However, it requires a heat kit for cold weather operation, which adds to the initial setup complexity. Compared to larger systems, this model is more suited for smaller homes or zones where space and capacity are appropriate. Its durability and warranty make it appealing for budget-conscious buyers focused on longevity.
Pros:- High efficiency with 15.2 SEER2 rating reduces energy bills
- Corrosion-resistant, durable construction for longevity
- Includes 10-year parts warranty when installed and registered properly
- Compatible with R-32 refrigerant, a lower-GWP choice
Cons:- Requires a heat kit for operation in cold climates, increasing initial cost
- Accessories like thermostats sold separately, adding to total expense
- Installation recommended by professionals may add to upfront costs
Best for: Homeowners in moderate climates seeking a dependable, low-GWP refrigerant system with long-term warranty coverage.
Not ideal for: Cold climate residents needing full heating capacity without additional kits or those who prefer simpler installations.
- Capacity:1.5 Ton
- SEER:15.2
- Refrigerant:R-32
- Warranty:10 years on parts
- Compatibility:Requires heat kit for cold climates
Our verdict“Ideal for budget-conscious homeowners in moderate climates who prioritize reliability and environmentally friendly refrigerants.”
Rellytech Mini Split AC/Heating System 12000 BTU Heat Pump, 20 SEER2, 115V
This compact system is tailored for spaces up to 750 sq ft, delivering impressive energy efficiency with a 20 SEER2 rating and using R454B refrigerant. Its Wi-Fi control and multiple modes make it highly versatile for residential, garage, or commercial applications, especially where space is limited. Compared with larger, ducted systems like the Klimaire, this mini split offers easier installation in tight spots and faster zoning. Nonetheless, installation requires a licensed HVAC technician, and the power cord isn’t included, which could delay setup. Its ability to operate efficiently across a broad temperature range makes it a strong choice for extreme climates, but it’s less suitable for whole-house cooling or heating needs.
Pros:- High energy efficiency with 20 SEER2 rating reduces long-term costs
- Smart Wi-Fi control allows remote operation from anywhere
- Effective in extreme temperatures from -13°F to 122°F
- Compact size simplifies installation in tight spaces
Cons:- Requires professional installation, adding upfront cost
- Power cord not included, which may complicate setup
- Limited coverage area, unsuitable for large or multiple rooms
Best for: Small space owners needing flexible, efficient climate control with remote operation and extreme temperature adaptability.
Not ideal for: Large households or spaces requiring whole-home solutions, due to its limited coverage area and single indoor unit.
- BTU:12000
- SEER2:20
- Voltage:115V
- Coverage Area:750 sq ft
- Temperature Range:-13°F to 122°F
- Refrigerant:R454B
- Warranty:8 years
Our verdict“Perfect for small spaces needing efficient, flexible climate control with remote management in challenging weather conditions.”
Goodman 2.5 Ton 14.3 SEER2 Heat Pump System with Multi-Position Air Handler
This Goodman system offers a solid balance between efficiency and ease of use, with a 14.3 SEER2 rating and R-32 refrigerant. Its corrosion-resistant air handler simplifies maintenance, and the 10-year parts warranty provides peace of mind. Compared to the Klimaire, it’s less efficient but more straightforward to install and size-appropriate for many moderate climates. This system is best for homeowners who want a reliable, low-GWP refrigerant solution without the complexities of larger or more advanced models. However, it requires a heat kit for cold weather, which can be an additional expense and complicate installation. Its primarily moderate climate design limits its suitability for colder regions without modifications.
Pros:- Decent energy efficiency with 14.3 SEER2 rating
- Durable, corrosion-resistant construction
- Includes a 10-year parts warranty for long-term reliability
- Uses low-GWP R-32 refrigerant
Cons:- Requires a heat kit for cold climate operation, adding cost and complexity
- Designed mainly for moderate climates, limiting cold-weather performance
- Installation may need professional assistance
Best for: Homeowners in moderate climates seeking an easy-to-install, environmentally friendly heat pump with dependable warranty coverage.
Not ideal for: Cold climate residents or those needing high efficiency for energy savings, due to its lower SEER rating and need for additional kits.
- Cooling Capacity:2.5 Ton
- SEER2:14.3
- Refrigerant:R-32
- Warranty:10-year parts
- Includes:Heat pump and air handler
Our verdict“Suitable for moderate climate homeowners prioritizing environmental standards and straightforward installation with reliable warranty coverage.”
3 Ton 14.3 SEER2 Mobile Home Heat Pump Unit & Coil AC System, 30′ Kit
This 3-ton mobile home-specific system provides reliable heating and cooling with a 14.3 SEER2 rating, using R-454B refrigerant. Its kit includes all necessary components, simplifying installation for mobile home owners. Compared to larger, more traditional systems like the Klimaire, it’s designed for ease of setup and durability in mobile environments. The inclusion of a 30-foot kit makes installation straightforward, but its design limits flexibility outside mobile home applications. The 10-year parts warranty adds confidence in long-term performance, though professional installation remains recommended to ensure warranty validity. Its focus on mobile homes means it’s less suited for permanent, non-mobile applications.
Pros:- Energy-efficient 14.3 SEER2 rating reduces energy costs
- Complete installation kit simplifies setup
- Durable evaporator coil with corrosion resistance
- Long 10-year parts warranty
Cons:- Limited to mobile home applications, reducing versatility
- Requires professional installation to maintain warranty
- Less suitable for traditional or non-mobile structures
Best for: Mobile home owners seeking a reliable, low-GWP refrigerant system with comprehensive installation support.
Not ideal for: Standard homeowners or commercial spaces, due to its mobile home-specific design and limited versatility.
- Capacity:3 Ton
- SEER:14.3
- Application:Mobile Home
- Kit Length:30 feet
- Refrigerant:R-454B
- Warranty:10 years parts
Our verdict“Best suited for mobile home owners needing a straightforward, environmentally friendly climate control system with full installation support.”
ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3 Ton – 36K BTU – 10kW Kit
The ACE AIR 13.4 SEER2 Heat Pump stands out for its high efficiency and environmentally friendly R32 refrigerant, making it an excellent choice for those prioritizing low GWP refrigerants in residential or light commercial settings. Compared with larger systems like the ACiQ 4 Ton 13.4 SEER2 Packaged Heat Pump, it offers slightly lower capacity but excels in quiet operation thanks to its ECM blower. Its horizontal packaged design simplifies installation, but its weight of 370 pounds may require extra help during setup. The unit’s efficiency and eco credentials make it ideal for those seeking reliable, year-round comfort with a focus on sustainability, though its weight and the lack of specific cold-weather heating specs could be limitations in very cold climates.
Pros:- High energy efficiency with 13.4 SEER2 rating
- Environmentally friendly R32 refrigerant
- Quiet operation due to ECM blower system
- Easy horizontal packaged installation
Cons:- Heavy unit weighing 370 pounds, may need assistance for installation
- Lack of detailed cold-weather heating performance specs
Best for: Homeowners or small commercial operators seeking a high-efficiency, environmentally friendly heat pump with flexible installation.
Not ideal for: Large commercial buildings or cold climate installations where heating performance in extreme cold is critical.
- SEER2 Rating:13.4
- Refrigerant:R32 Eco Refrigerant
- Capacity:36K BTU / 3 Ton
- Power Supply:208/230V, 1-phase, 60Hz
- Heating Method:Forced Air
- Mounting Type:Floor Mount
- Item Dimensions:66″D x 35″W x 34″H
- Item Weight:370 pounds
- Color:Architectural Grey
Our verdict“This system is well-suited for those seeking a reliable, eco-friendly heat pump for moderate climates and residential use.”
15,000 BTU Distinctions by Amana PTAC Heat Pump A/C 5kW | 30 A
The Amana PTAC 15,000 BTU Heat Pump combines high efficiency with user-friendly features, making it a solid pick for small spaces such as apartments or hotel rooms. Its eco-friendly R-32 refrigerant boosts efficiency, similar to the Goodman 2 Ton 14.3 SEER2, but with more focus on ease of installation via standard PTAC sleeves. While its 14,700 BTU cooling and 13,500 BTU heating capacities suit moderate climates, it requires a 42″ PTAC sleeve (sold separately), which might add to upfront costs. Its multiple fan speeds and emergency heat make it versatile, but noise levels are not specified, and its compact size limits capacity for larger spaces or colder climates.
Pros:- Eco-friendly refrigerant with high efficiency
- Multiple fan speeds and emergency heating
- Easy to install and maintain with washable filters
- Compact design suited for small spaces
Cons:- Requires a separate PTAC sleeve, increasing initial setup complexity
- Potentially higher upfront cost for advanced features
- Noise levels are not specified, which could impact quiet environments
Best for: Apartment dwellers or small commercial spaces needing reliable, eco-friendly heating and cooling with straightforward installation.
Not ideal for: Large homes or cold climates where higher capacity or more robust heating is necessary.
- Cooling Capacity:14,700 BTU
- Heating Capacity:13,500 BTU
- Electric Power:5 kW
- Refrigerant:R-32
- EER:11.4
- Installation:Fits standard 42″ PTAC sleeve
Our verdict“Ideal for small-scale applications needing efficient, eco-friendly comfort with simple installation requirements.”
ACiQ 4 Ton 13.4 SEER2 Packaged Heat Pump System with 10kW & Install Kit
The ACiQ 4 Ton 13.4 SEER2 Packaged Heat Pump offers substantial capacity for larger homes or light commercial spaces, with efficiency comparable to smaller units like the ACE AIR 13.4 SEER2. Its galvanized steel cabinet enhances durability, and the system’s operation at 80 dB is louder than some competitors like Goodman, but it compensates with robust cooling and heating capacity. Designed for outdoor installation, it’s suitable for those needing reliable, all-season climate control, although its noise level and the need for professional setup could be drawbacks for some.
Pros:- High capacity of 48,000 BTU cooling power
- Durable galvanized steel cabinet
- Energy-efficient with 13.4 SEER2 rating
- Includes installation kit for convenience
Cons:- Relatively noisy at 80 dB, which may disturb quiet settings
- Requires professional installation due to size and complexity
- Limited info on auxiliary heating performance
Best for: Property owners needing a high-capacity, durable heat pump for larger residential or light commercial applications.
Not ideal for: Quiet environments or small spaces where noise and size are concerns, or users seeking low-noise operation.
- Cooling Power:48000 BTU
- Refrigerant:R-32
- Noise Level:80 db
- Installation Type:Packaged Outdoor
- Compressor Type:Scroll Compressor
- Voltage:230 volts
Our verdict“Best suited for larger spaces needing durable, high-capacity climate control, accepting some noise tradeoff.”
Goodman 2 Ton 14.3 SEER2 Multi-Position R-32 Heat Pump System with Air Handler
The Goodman 2 Ton 14.3 SEER2 Heat Pump System offers a balanced mix of efficiency and adaptability, making it a favorable choice for residential spaces where reliable low GWP refrigerant performance is desired. Its multi-position air handler allows flexible installation, a step above simpler split systems like the Amana PTAC. While the 74 dB noise level is acceptable, it’s higher than some quieter models, and additional accessories like thermostats and heat kits are sold separately, adding to overall cost. Cold climate performance might require a heat kit, which could complicate setup in colder regions.
Pros:- High efficiency with 14.3 SEER2 rating
- Multi-position air handler for installation flexibility
- Corrosion-resistant construction for longevity
- Factory-charged, ready to install
Cons:- Additional accessories like thermostats and heat kits must be purchased separately
- Noise level of 74 dB could be noticeable in quiet spaces
- Cold climate performance may need supplemental heat kits
Best for: Homeowners seeking an efficient, adaptable system with long-term durability and flexible installation options.
Not ideal for: Very quiet environments or cold climates without additional heating accessories, due to noise and potential need for extra parts.
- Cooling Power:24000 BTU
- SEER:14.3
- Refrigerant:R-32
- Motor Type:ECM and PSC
- Color:Architectural Gray
- Noise:74 dB
Our verdict“A strong choice for residential setups that value flexibility and efficiency, with some considerations for noise and cold climate operation.”
Goodman 4 Ton 15.2 SEER Heat Pump Split System with R-32 Refrigerant and 10kW Heat Kit
The Goodman 4 Ton 15.2 SEER Heat Pump combines high efficiency with substantial capacity, ideal for larger residences or properties in cooler areas. Its 15.2 SEER rating ensures good energy savings, comparable to the ACE AIR 13.4 but with more capacity. The system’s versatility includes multiple installation options and a 10 kW heat kit for cold weather operation. However, installation complexity and the need for additional accessories like thermostats and sensors can increase upfront costs. For those in very cold climates, the heat kit is essential, but it adds to the overall setup complexity.
Pros:- High efficiency with 15.2 SEER rating
- Flexible installation options
- Includes a 10 kW heat kit for cold weather
- Corrosion-resistant durable build
Cons:- Requires purchase of thermostats, sensors, and heat kits separately
- Installation may need professional assistance
- Heat kit necessary for cold climates, adding cost
Best for: Large households or properties in colder climates needing a high-capacity, efficient heating and cooling system.
Not ideal for: Small spaces or users seeking a plug-and-play solution without extra accessories or complex installation.
- Capacity:4 Ton
- SEER:15.2
- Refrigerant:R-32
- Heat Kit Power:10 kW
- Warranty:10 years
- Installation Options:Upflow, horizontal right, horizontal left
Our verdict“This system suits large homes in cold climates where capacity and efficiency are priorities, with some added complexity for installation and accessories.”
12000 BTU Mini Split AC/Heating System, 17 SEER2, 115V
This mini split system stands out for its high efficiency and versatile features, making it an excellent choice for small to medium-sized spaces up to 750 sq.ft. Its inverter technology delivers reduced power consumption compared to traditional systems like the Goodman 3.5 Ton, which relies on a non-inverter compressor. The WiFi control and multiple modes—including eco and sleep—offer tailored comfort, though the unit’s 28 dB noise level may be noticeable in very quiet environments. While easy to operate, professional installation is recommended, adding some upfront cost. Compared to larger systems, its compact size and smart features make it ideal for retrofit projects or zones needing flexible climate control.
Pros:- Energy-efficient inverter technology reduces power use
- WiFi and voice control for seamless operation
- Multiple modes and fan speeds for customized comfort
- Complete installation kit included
Cons:- Professional installation is necessary, adding cost
- Noise level of 28 dB may be noticeable in very quiet settings
Best for: Homeowners seeking energy-efficient, WiFi-enabled climate control for small spaces
Not ideal for: Large households or commercial spaces requiring higher capacity or more robust installation
- Cooling Power:12000 BTU
- SEER2:17
- Voltage:115V
- Wattage:1230 watts
- Coverage Area:750 sq.ft
- Refrigerant:R-32
- Noise:28 dB
- Modes:7 modes including cool, heat, dry, fan, sleep, ECO, feel
- Remote Control:Yes
Our verdict“This mini split is ideal for small space owners prioritizing efficiency and smart control, with a tradeoff in noise level and installation complexity.”
Goodman 3.5 Ton 14.3 SEER2 R-32 Heat Pump Condenser
Compared with the mini split, this outdoor condenser offers substantial capacity (3.5 tons) suitable for larger homes, and uses environmentally friendly R-32 refrigerant. Its 14.3 SEER2 rating provides solid efficiency, though not as high as ductless options like the MrCool VersaPro, which reaches up to 18.8 SEER2. Noise at 72 dB is higher than some interior units, but typical for outdoor condensers. It requires pairing with a compatible indoor unit, adding complexity and potential extra costs. This model is best suited for installations where a centralized system is preferred over multiple ductless units, especially when replacing older, less efficient models.
Pros:- Improved efficiency over older models
- Uses eco-friendly R-32 refrigerant
- 10-year parts warranty when properly installed
- Suitable for retrofit with existing ductwork
Cons:- Requires pairing with a compatible indoor unit, increasing complexity
- Higher noise level at 72 dB compared to indoor units
Best for: Homeowners upgrading to environmentally friendly, centralized heat pump systems for larger spaces
Not ideal for: Small apartments or spaces needing flexible zoning, due to its outdoor-only design and pairing requirements
- Cooling Power:42000 BTU
- SEER2:14.3
- Refrigerant:R-32
- Noise:72 db
- Voltage:230 volts
- Wattage:3500 watts
Our verdict“This outdoor heat pump is well-suited for larger homes seeking efficient, environmentally friendly climate control, with some installation complexity and noise considerations.”
MrCool SEER2 VersaPro Central Ducted Split System
This system offers the highest efficiency with up to 18.8 SEER2 and uses the environmentally friendly R454B refrigerant, making it ideal for whole-house installations that prioritize low GWP refrigerants. Its pre-charged Quick Connect line set simplifies installation compared to traditional systems like the Goodman condenser, but the complexity and higher initial cost mean it’s best suited for experienced HVAC installers. Its versatile installation options and smart features like filter reminders and self-diagnostics make ongoing maintenance easier. Compared with smaller units, this system provides the capacity and efficiency for larger homes, but it requires professional setup and can be more expensive upfront.
Pros:- High efficiency with up to 18.8 SEER2
- Environmentally friendly refrigerant R454B
- Flexible installation options (upflow, downflow, horizontal)
- Smart features for easy maintenance
Cons:- Requires professional installation due to complexity
- Higher initial cost compared to simpler systems
Best for: Builders and homeowners seeking a high-efficiency, environmentally friendly central system for larger residences
Not ideal for: Small spaces or DIY enthusiasts due to installation complexity and cost
- SEER2:15.2-18.8
- Refrigerant:R454B
- Line set length:35 feet
- Application:upflow, downflow, horizontal
- Smart features:filter reminder, self-diagnostic
Our verdict“This versatile, high-efficiency system is best for larger homes where environmental impact and performance are priorities, with a tradeoff in cost and installation complexity.”
ACE AIR 13.4 SEER2 Heat Pump Package HVAC Unit, 3.5 Ton, 42K BTU, 10kW Kit
This package unit combines efficiency with convenience, offering 13.4 SEER2 and R32 refrigerant, similar in capacity to the Goodman condenser but with a more straightforward horizontal design. Its packaged setup simplifies installation for contractors, especially in retrofit projects, and the quiet ECM blower ensures smooth operation. While its efficiency rating is slightly lower than the MrCool VersaPro or mini split options, the all-in-one design reduces setup complexities. It requires an auxiliary heat strip to perform well in low temperatures, which could add to operational costs. This makes it a solid choice for small to medium-sized homes where ease of installation matters more than the highest efficiency ratings.
Pros:- Horizontal packaged design for easy installation
- Eco-friendly R32 refrigerant
- Quiet operation with multi-speed ECM blower
- Reliable year-round performance
Cons:- Requires auxiliary heat kit for very low temperatures
- Efficiency rating is moderate compared to high-SEER systems
Best for: Small to medium-sized homes needing an easy-to-install, reliable climate solution
Not ideal for: Homes in extremely cold climates without additional heating options or those seeking the highest efficiency
- SEER2:13.4
- Ton:3.5
- BTU:42,000
- Heat Strip KW:10
Our verdict“This package HVAC unit fits small to medium homes looking for straightforward installation and consistent performance, with some limitations in low-temperature efficiency.”
ACiQ 3 Ton 13.4 SEER2 Packaged Heat Pump System with 7.5kW & Install Kit
Offering a solid 13.4 SEER2 rating and equipped with the environmentally friendly R32 refrigerant, the ACiQ system aims at both residential and light commercial applications. Its included installation kit with thermostat and backup heat kit makes it a comprehensive choice for professional installers. While its capacity aligns with the ACE AIR unit, it offers slightly higher efficiency and robust construction, suitable for buildings requiring reliable, low-GWP climate control. The system’s weight and need for professional setup make it less ideal for DIYers, but its all-inclusive package simplifies procurement for contractors. Compared to smaller or less complete units, this system provides a dependable, environmentally conscious solution for larger or commercial spaces.
Pros:- Energy-efficient with 13.4 SEER2
- Includes comprehensive install kit
- Uses environmentally friendly R32 refrigerant
- Durable construction suitable for commercial use
Cons:- Requires professional installation due to weight and complexity
- No price data available, potential higher cost
Best for: Professional installers and commercial projects prioritizing efficiency and comprehensive installation support
Not ideal for: DIY homeowners or small spaces where simplicity and lower capacity are sufficient
- Capacity:3 Ton
- SEER2:13.4
- Refrigerant:R32
- Includes:install kit, thermostat, backup heat
Our verdict“This all-in-one system offers reliable, eco-conscious performance ideal for professional applications, at the expense of higher complexity and cost.”
How We Picked
I evaluated each heat pump based on refrigerant type and GWP level, efficiency ratings, capacity suitability, build quality, ease of installation, and overall value. Priority was given to units using R-32 or newer low-GWP refrigerants, as these have the most significant environmental benefits. I also considered the reputation of the brand, warranty coverage, and user reviews to gauge reliability and customer support. The ranking reflects a balance between eco-friendliness, performance, and affordability, ensuring that each pick offers a clear advantage in its category.| heat pump with low gwp refrigerant | Refrigerant |
|---|---|
| Klimaire 3 Ton Inverter Heat P | R454B |
| Goodman 1.5 Ton 15.2 SEER2 Hea | R-32 |
| Rellytech Mini Split AC/Heatin | R454B |
| Goodman 2.5 Ton 14.3 SEER2 Hea | R-32 |
| 3 Ton 14.3 SEER2 Mobile Home H | R-454B |
| ACE AIR 13.4 SEER2 Heat Pump P | R32 Eco Refrigerant |
| 15,000 BTU Distinctions by Ama | R-32 |
| ACiQ 4 Ton 13.4 SEER2 Packaged | R-32 |
| Goodman 2 Ton 14.3 SEER2 Multi | R-32 |
| Goodman 4 Ton 15.2 SEER Heat P | R-32 |
| 12000 BTU Mini Split AC/Heatin | R-32 |
| Goodman 3.5 Ton 14.3 SEER2 R-3 | R-32 |
| MrCool SEER2 VersaPro Central | R454B |
| ACE AIR 13.4 SEER2 Heat Pump P | — |
| ACiQ 3 Ton 13.4 SEER2 Packaged | R32 |
Factors to Consider When Choosing Heat Pump With Low Gwp Refrigerant
When selecting a heat pump with low GWP refrigerant, it’s important to look beyond initial costs. Consider the size of your space to avoid inefficiency, and evaluate the refrigerant type to ensure environmental benefits. Additionally, efficiency ratings like SEER and HSPF directly impact your energy bills, making them crucial factors. Ease of maintenance and long-term warranty support can save headaches down the line. Lastly, think about compatibility with your existing system, especially if upgrading from an older unit.Refrigerant Type and GWP Levels
The refrigerant choice determines the environmental footprint of your heat pump. R-410A, once common, has a high GWP, whereas R-32 and newer options like R-1234yf significantly reduce this impact. Selecting a unit with a low-GWP refrigerant not only benefits the environment but may also future-proof your investment, as regulations tighten around high-GWP substances. Be aware that some low-GWP options may come with slightly different performance characteristics, so compare carefully.
Capacity and Size Compatibility
Choosing a system with the correct capacity ensures efficient operation and comfort. An oversized unit may cycle frequently, wasting energy, while an undersized one struggles to heat or cool effectively. Measure your space accurately and consult with a professional if possible. Smaller units tend to be more affordable but may have fewer eco-friendly options, so balance capacity needs with refrigerant GWP benefits.
Efficiency Ratings
Look for high SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings. These figures directly impact your energy bills, and high efficiency levels often indicate better technology and design. Keep in mind that some low-GWP refrigerants may slightly reduce efficiency, so weigh the environmental benefits against potential operational costs. The most efficient units tend to be more expensive initially but save money long-term.
Ease of Installation and Maintenance
Installation complexity varies, especially with newer refrigerant systems. Some units may require specialized handling or additional components, increasing upfront costs. Maintenance is equally important; systems with accessible components and clear user guidance tend to last longer and perform better. Opt for brands with strong support networks and comprehensive warranties to mitigate potential repair challenges.
Long-term Value and Compatibility
Consider the total cost of ownership, including energy savings, maintenance, and warranty coverage. Compatibility with existing ductwork or home systems can influence installation costs and performance. Investing in a system with proven durability and eco-friendly refrigerant compliance aligns with long-term environmental and financial goals. Sometimes, paying more upfront yields significant savings and peace of mind over the years.
Frequently Asked Questions
How do low GWP refrigerants impact system performance?
Low GWP refrigerants like R-32 are designed to provide similar or better efficiency compared to traditional refrigerants such as R-410A. They often operate at comparable pressures and temperatures, maintaining performance standards. However, some systems optimized for newer refrigerants may require specific components, so compatibility is key. Overall, modern low-GWP refrigerants are capable of delivering reliable heating and cooling without compromising efficiency.
Are low GWP refrigerant systems more expensive to install?
In many cases, systems using low-GWP refrigerants can involve higher upfront costs due to specialized components or handling requirements. Installation may need technicians trained in newer refrigerants, which can add to labor expenses. Nonetheless, these costs are often offset by increased energy efficiency and future regulatory compliance, making them a worthwhile investment for environmentally conscious buyers.
Will switching to a low GWP refrigerant affect energy bills?
Switching to a low GWP refrigerant generally maintains or improves system efficiency if the unit is designed for it. Many modern low-GWP units are optimized for better thermodynamics, potentially reducing your energy bills over time. However, older systems retrofitted with low-GWP refrigerants might experience slight efficiency drops if not properly upgraded, so choosing a dedicated new unit is usually preferable.
What is the lifespan of a heat pump with low GWP refrigerant?
Most high-quality heat pumps, including those with low GWP refrigerants, offer a lifespan of around 10-15 years with proper maintenance. The refrigerant itself does not significantly affect durability, but the overall build quality and installation practices play a major role. Regular servicing and choosing reputable brands can extend the system’s effective life and ensure ongoing environmental benefits.
Can I retrofit my existing system with a low-GWP refrigerant?
Retrofitting an existing heat pump with a low-GWP refrigerant is possible but not always practical or advisable. Many older units are not designed for newer refrigerants, requiring significant modifications or complete replacement. Consulting with a qualified HVAC technician is essential to determine if retrofit options exist and whether a full upgrade might deliver better performance, efficiency, and environmental benefits.
Conclusion
For those seeking the best overall balance of performance, eco-friendliness, and value, the Klimaire 3 Ton Inverter Heat Pump System is the top recommendation. Buyers prioritizing affordability and smaller capacity should consider the Goodman 1.5 Ton 15.2 SEER2 System. For newcomers or those wanting straightforward eco-friendly options, the MrCool VersaPro offers simplicity and reliability. Finally, if budget allows and premium features matter most, investing in a high-efficiency, low-GWP model like some offerings from Goodman or ACiQ will deliver long-term savings and environmental benefits. Match your choice to your specific needs and budget to make the most of your investment.
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