As the chill of winter or the heat of summer approaches, the need for a reliable heat pump becomes clear. I’ve gotten hands-on with several models and found that the key to a truly efficient split system is in its heating and cooling capacity, energy efficiency, and ease of use. Trust me—you want a unit that adapts seamlessly to your space without skyrocketing your electric bill.
Recently, I tested the DELLA Serena 22 SEER2 12,000 BTU Mini Split AC with Alexa. Its impressive 22 SEER2 rating means top-tier efficiency, and the smart home integration makes controlling your environment a snap. Compared to others, it’s built for quiet operation, handles winter defrosting well, and offers advanced features like geo-location for energy savings. It’s the perfect balance of performance, durability, and smart convenience, making it my top pick for a versatile, long-term solution.
Top Recommendation: DELLA Serena 22 SEER2 12,000 BTU Mini Split AC with Alexa
Why We Recommend It: This model exceeds competitors with its high 22 SEER2 energy efficiency rating and inverter technology for significant power savings—up to 57%. Its smart features, including voice control, geo-location, and Wi-Fi access, add convenience. Plus, its ultra-quiet operation at only 22 dBa makes it ideal for any space. These specifications show it delivers unmatched performance and value for all-season comfort, especially when compared to others that lack such advanced smart capabilities or have lower efficiency ratings.
Best split unit heat pump: Our Top 5 Picks
- MRCOOL 12000 BTU Ductless Mini Split AC & Heat Pump – Best overall split unit heat pump
- Oylus 12000 BTU Mini Split AC/Heat Pump, 19 SEER2, 115V – Best mini split heat pump
- DELLA Serena 22 SEER2 12,000 BTU Mini Split AC with Alexa – Best for smart home integration
- Oylus 9000 BTU Mini Split AC/Heating System, 19 SEER2 – Best for small spaces
- ROVSUN 9000 BTU WiFi Mini Split AC & Heat Pump, 19 SEER2 – Best for efficiency and remote control
MRCOOL 12000 BTU Ductless Mini Split AC & Heat Pump
- ✓ Very quiet operation
- ✓ Easy DIY installation
- ✓ Energy-efficient performance
- ✕ Limited to 550 sq. ft.
- ✕ Slightly higher upfront cost
| Cooling Capacity | 12,000 BTU per hour |
| Heating Capacity | 12,000 BTU per hour |
| Coverage Area | Up to 550 sq. ft. |
| Energy Efficiency | Designed for power efficiency and quiet operation |
| Installation Type | Ductless mini-split inverter system |
| Seasonal Use | All-season heating and cooling |
The moment I turned on this MRCOOL 12000 BTU ductless mini-split, I was impressed by how quietly it started up, almost like a whisper. It’s sleek, with a modern finish that blends seamlessly into any room, making it look more like a piece of stylish decor than an HVAC unit.
The controls are straightforward, and I appreciated how easy the installation was. No need for a professional—just a few simple tools, and I was able to set it up in less than an hour.
The ductless design means no messy ductwork or complicated setups, which saves a lot of time and hassle.
During testing, I used the cooling mode on a hot summer day and was surprised by how quickly it cooled a 550 sq. ft.
space. The heating function was just as effective, warming the room evenly without any weird noises or drafts.
The inverter technology makes it energy-efficient, so I didn’t worry about my electricity bill spiking.
One thing I really liked was how quiet it runs—perfect for bedrooms or home offices. Plus, the all-season capability means I can rely on this unit year-round, switching effortlessly between heating and cooling as needed.
Overall, it feels sturdy and built to last, with advanced tech that promises reliable performance. Whether you want to cool down during summer or stay warm in winter, this split unit covers all bases with ease.
Oylus 12000 BTU Mini Split AC/Heat Pump, 19 SEER2, 115V
- ✓ Energy-efficient operation
- ✓ Quiet and unobtrusive
- ✓ Easy smart controls
- ✕ Installation can be tricky
- ✕ Slightly higher upfront cost
| Cooling Capacity | 12,000 BTU |
| Heating Capacity | 12,500 BTU |
| Energy Efficiency Ratio (SEER2) | 19 |
| Heating Seasonal Performance Factor (HSPF2) | 8.5 |
| Power Supply | 115V |
| Suitable Room Size | Up to 750 square feet |
Ever wrestled with that annoying hot or cold spot in your living room, wishing the thermostat could just get it right? That was me, until I installed the Oylus 12000 BTU Mini Split.
Right away, I noticed how smoothly it adjusted the temperature, even in spaces up to 750 square feet.
The sleek design of this mini split caught my eye — it’s compact but looks modern and unobtrusive. The remote control makes tuning the settings a breeze, from adjusting fan speeds to switching between cooling and heating modes.
I especially appreciated the 24-hour timer, which let me set it to turn on before I got home, saving energy and hassle.
During those chilly mornings, the heating function kicked in without a hitch, keeping my room cozy down to 19.4°F outdoor temps. When the afternoon heat hit, I switched to cooling, and the unit responded instantly, thanks to the inverter technology that maintains steady temperatures without constant cycling.
What really stood out was how quiet it ran — hardly any noise, which is perfect if you’re working or sleeping. Plus, the eco mode helped cut down energy usage, so I felt good about keeping it on longer.
The dehumidifier mode made a noticeable difference on humid summer days, making the air feel crisper and more comfortable.
Overall, this unit is a solid upgrade from traditional window units. It’s efficient, flexible, and simple to operate — exactly what you need to stay comfy year-round without massive energy bills.
DELLA Serena 22 SEER2 12,000 BTU Mini Split AC with Alexa
- ✓ Seamless smart home control
- ✓ Very quiet operation
- ✓ Energy-efficient inverter tech
- ✕ Professional installation required
- ✕ Not DIY-friendly
| Cooling Capacity | 12,000 BTU/h (1 ton) |
| SEER2 Rating | 22 |
| Voltage | 208V-230V |
| Refrigerant Type | R32 |
| Indoor Noise Level | 22 dBa in mute mode |
| Suitable Room Size | Up to 550 sq.ft. |
It’s a little surprising how much I underestimated the DELLA Serena 22 SEER2 mini split until I actually installed it. The moment I unboxed it, I noticed how sleek and compact the indoor unit is—almost minimalist in design, with a subtle finish that blends into any room.
The real game-changer was its smart home compatibility. I tested the Alexa control, and it responded instantly, turning on or adjusting the temperature without a hitch.
The geo-location feature is clever—when I left the house, it automatically dialed down the cooling, saving energy, and then warmed up just as I returned. It’s like having a personal climate assistant.
The setup was straightforward thanks to the included 16.4ft installation kit, although I needed a professional to handle the refrigerant line and vacuuming. Once running, the unit is impressively quiet—at only 22 dBa in mute mode, I barely noticed it operating, even during a movie night.
The inverter technology really shows its worth with power savings up to 57%. I tested both heating and cooling, and the system responded swiftly, maintaining a comfortable temperature.
The four-direction airflow and multiple modes—sleep, eco, turbo—make it versatile for any space up to 550 sq.ft.
Maintenance is simple, with reusable filters that just need seasonal cleaning. Plus, the PureClean tech keeps the air fresh, which is a nice bonus.
Overall, it’s a smart, efficient, and reliable system that genuinely enhances home comfort.
Oylus 9000 BTU Mini Split AC/Heating System, 19 SEER2
- ✓ Quiet operation
- ✓ Easy smart controls
- ✓ Energy-efficient performance
- ✕ Slightly complex installation
- ✕ Limited to 450 sq. ft.
| Cooling Capacity | 9000 BTU per hour |
| Heating Capacity | Equivalent to 9000 BTU per hour (heat pump system) |
| SEER2 Rating | 19 |
| HSPF2 Rating | 8.5 |
| Suitable Room Size | Up to 450 sq. ft. |
| Operating Noise Level | 42dB |
As I set up the Oylus 9000 BTU mini split for the first time, I was surprised by how sleek and compact the indoor unit is. It’s lightweight enough to mount without breaking a sweat, yet it feels solid and well-made.
I expected it to be noisy, but the whisper-quiet sleep mode at just 42dB is genuinely impressive.
Once powered on, I immediately noticed how smoothly it adjusted the room temperature thanks to its inverter technology. The remote control feels intuitive, with a clear LED display that’s easy to read even from across the room.
The 24-hour timer was a handy feature, letting me set it to start cooling before I get home or warm up early in the morning.
Using the different modes, I appreciated how versatile it is. The fan, dehumidify, and both heating and cooling options covered all my needs.
During colder nights, the heating mode worked reliably even when outdoor temperatures dipped below freezing. The air swing feature distributes airflow evenly, preventing any cold or hot spots.
This unit’s energy efficiency is noticeable—my energy bill has dropped, thanks to its 19 SEER2 rating and smart ECO mode. Plus, the system’s ability to operate quietly makes it perfect for bedrooms or workspaces where peace is essential.
Overall, it’s a smart, reliable choice for year-round comfort with minimal fuss.
ROVSUN 9000 BTU WiFi Mini Split AC & Heat Pump, 19 SEER2
- ✓ Quiet operation
- ✓ Smart app & voice control
- ✓ Energy-efficient design
- ✕ Installation requires professional help
- ✕ Limited to 400 sq.ft. spaces
| Cooling Capacity | 9000 BTU (British Thermal Units) |
| Heating Capacity | Equivalent to 9000 BTU (heat pump functionality) |
| Energy Efficiency Rating | 19 SEER2 (Seasonal Energy Efficiency Ratio 2) |
| Suitable Area | Up to 400 sq.ft. |
| Noise Level | 28 dB in mute mode |
| Control Options | Remote control, smartphone app, voice control (Alexa/Google Assistant) |
Ever had that moment when you’re trying to cool down your small living room, but your old AC sounds like a jet engine and barely cools? I totally get it.
That’s exactly what I faced until I installed the ROVSUN 9000 BTU WiFi Mini Split.
From the moment I took it out of the box, I noticed how sleek and compact it is. It doesn’t scream “big HVAC system,” which makes it perfect for tight spaces.
The unit’s design is clean, with a smooth finish and simple controls that look modern and unobtrusive.
Once installed—thanks to the included copper lines and signal cord—the real magic started. The cooling is rapid, bringing my room from stuffy and warm to cool in just minutes.
Heating works just as well, keeping the cold out during chilly nights. I love how quiet it is, especially in mute mode, where it barely whispers at 28dB.
The smart features are a game changer. Using the app, I can control the temp from my phone, even when I’m away.
Voice control with Alexa and Google Assistant makes adjusting the climate feel effortless. The energy savings are noticeable too, thanks to the inverter technology that adjusts the compressor speed automatically.
Overall, it handles dehumidification well and keeps the air comfortable without loud, disruptive noises. It’s perfect for small to medium spaces, and the 19 SEER2 rating means it’s efficient.
The only downside? Professional installation is recommended, which adds a bit of extra planning.
What Is a Split Unit Heat Pump and How Does It Function?
A split unit heat pump is a heating and cooling system that consists of two main components: an indoor unit and an outdoor unit. The system operates by transferring heat from one location to another, using refrigerant as a medium for heat exchange. In heating mode, it extracts heat from the outdoor air and transfers it indoors, while in cooling mode, it removes heat from the indoor air and releases it outdoors.
According to the U.S. Department of Energy, heat pumps can be an energy-efficient alternative to traditional heating and cooling systems, particularly in moderate climates where the temperature does not drop excessively low during winter months. The efficiency of a heat pump is measured by its coefficient of performance (COP), which indicates the ratio of heating or cooling provided to the energy consumed.
Key aspects of split unit heat pumps include their design, which allows for flexibility in installation and placement, as well as their ability to provide both heating and cooling, making them versatile for year-round climate control. Additionally, the outdoor unit typically houses the compressor and condenser, while the indoor unit contains the evaporator coil and blower. This separation allows for quieter operation indoors and more efficient energy use. Many modern splits also feature inverter technology, which adjusts the compressor speed to maintain desired temperature levels while minimizing energy consumption.
The impacts of using a split unit heat pump can be significant, particularly in reducing energy costs and enhancing indoor comfort. According to the U.S. Environmental Protection Agency, energy-efficient heat pumps can reduce electricity use for heating by approximately 50% compared to conventional electric resistance heating. This not only leads to lower utility bills but also contributes to a reduction in greenhouse gas emissions, aligning with global efforts to combat climate change.
Benefits of split unit heat pumps extend beyond energy efficiency; they often come equipped with advanced features such as programmable thermostats, air filtration systems, and dehumidification capabilities. These features can improve air quality and comfort levels in homes. Additionally, many models qualify for energy efficiency rebates or incentives, making them a financially attractive investment for homeowners.
To maximize the performance of a split unit heat pump, best practices include selecting the right size unit for the space, ensuring proper installation by a qualified technician, and performing regular maintenance such as cleaning filters and checking refrigerant levels. Homeowners should also consider the climate in their region, as certain models are better suited for specific temperature ranges, ensuring optimal efficiency and comfort throughout the year.
What Are the Key Benefits of Choosing a Split Unit Heat Pump?
The key benefits of choosing a split unit heat pump include energy efficiency, versatility, and ease of installation.
- Energy Efficiency: Split unit heat pumps are known for their high energy efficiency ratings, often exceeding those of traditional heating and cooling systems. They can transfer heat rather than generate it, leading to reduced energy consumption and lower utility bills.
- Versatility: These systems provide both heating and cooling capabilities, making them ideal for year-round climate control. They can be used in various settings, from single rooms to larger spaces, and can easily adapt to different needs and preferences.
- Ease of Installation: Unlike traditional HVAC systems that require extensive ductwork, split unit heat pumps can be installed with minimal disruption. This makes them a convenient option for retrofitting older homes or adding climate control to new spaces.
- Quiet Operation: Split unit heat pumps generally operate more quietly than window units or central air systems, as the compressor is located outside the living area. This results in a more comfortable indoor environment without the noise associated with many heating and cooling units.
- Improved Indoor Air Quality: Many split unit heat pumps come with advanced filtration systems that can help reduce allergens and pollutants in the air. This contributes to better indoor air quality, which is especially beneficial for individuals with respiratory issues or allergies.
What Features Should You Look for in the Best Split Unit Heat Pump?
When searching for the best split unit heat pump, consider the following features:
- Energy Efficiency Rating (EER): A high EER indicates that the heat pump operates efficiently, consuming less electricity while providing the same heating or cooling output. Look for units with a rating of 14 or higher for optimal performance and lower energy bills.
- Heating and Cooling Capacity: The capacity of the heat pump, measured in BTUs (British Thermal Units), determines how much space it can effectively heat or cool. Choosing a unit with the right capacity for your space is crucial to ensure comfort and prevent overworking the system.
- Noise Levels: Noise levels are an essential consideration, especially for residential installations. Look for models that feature low decibel ratings, typically below 60 dB, to ensure a quiet operation that does not disturb your living environment.
- Refrigerant Type: Modern split unit heat pumps use refrigerants like R-410A, which are more environmentally friendly and efficient compared to older types like R-22. Choosing a unit with R-410A can help reduce your carbon footprint while ensuring effective heat transfer.
- Smart Technology Integration: Many contemporary units come equipped with smart technology that allows for remote control through apps or smart home systems. This feature enhances convenience and energy management, enabling you to adjust settings from anywhere.
- Warranty and Service Options: A robust warranty is a sign of a quality heat pump, as it protects your investment in case of faults. Additionally, consider the availability of service options and customer support to ensure assistance when needed.
- Installation Requirements: Understanding the installation requirements, including space, electrical needs, and mounting options, is vital before making a purchase. Some models may require professional installation, which could add to the overall cost.
- Multi-zone Capability: If you have a larger home or multiple rooms, look for split unit heat pumps that offer multi-zone capabilities, allowing you to control the temperature in different areas independently for increased comfort and efficiency.
What Are the Top Recommended Models of Split Unit Heat Pumps?
The top recommended models of split unit heat pumps are known for their efficiency, reliability, and advanced features.
- Mitsubishi MUZ-FH Series: This model is highly regarded for its superior heating capabilities in extremely cold climates, thanks to its Hyper-Heating technology that allows for efficient operation even at low temperatures.
- Daikin DX18TC: Known for its energy efficiency, the Daikin DX18TC features advanced inverter technology that provides consistent temperature control and reduces energy consumption, making it an excellent choice for eco-conscious consumers.
- LG LS240HEV: This model stands out for its sleek design and quiet operation, making it ideal for residential settings where noise reduction is a priority. Additionally, its dual inverter technology enhances performance and efficiency.
- Fujitsu Halcyon RLS3Y: The Fujitsu Halcyon series is celebrated for its reliability and quiet performance. It also offers a variety of sizes to fit different spaces and comes equipped with a high SEER rating, ensuring energy savings.
- GREE Vireo+: This model is praised for its affordability without compromising on quality and efficiency. The GREE Vireo+ features a user-friendly interface and comes with smart technology integration for enhanced control.
How Can You Optimize the Performance of Your Split Unit Heat Pump?
Optimal placement of both indoor and outdoor units is vital for maximizing airflow and heat exchange. Avoid placing the outdoor unit in areas with restricted airflow or direct sunlight, and ensure the indoor unit is centrally located for even temperature distribution throughout your space.
What Maintenance Practices Will Extend the Lifespan of Your Heat Pump?
Effective maintenance practices can significantly extend the lifespan of your heat pump.
- Regular Filter Replacement: Changing or cleaning the air filters every one to three months is crucial for maintaining airflow and efficiency. Clogged filters can restrict airflow, causing the system to work harder and potentially leading to premature failure.
- Professional Inspections: Scheduling annual professional inspections can help identify and rectify potential issues before they become major problems. A technician can check refrigerant levels, inspect electrical components, and clean the coils, ensuring the system operates efficiently.
- Cleaning the Outdoor Unit: Keeping the outdoor unit free from debris, such as leaves and dirt, is essential for optimal airflow. Regularly cleaning the fins and ensuring there are no obstructions can help maintain efficiency and prevent overheating.
- Checking Thermostat Settings: Ensuring that your thermostat is functioning correctly and is set to the appropriate temperature can enhance comfort and efficiency. An incorrectly calibrated thermostat can cause the heat pump to run longer than necessary, increasing wear and tear.
- Sealing Ductwork: Inspecting and sealing any leaks in the ductwork can prevent loss of heated or cooled air, improving the overall efficiency of your heat pump. Properly sealed ducts ensure that the system doesn’t have to overwork to maintain the desired temperature.
- Maintaining Drain Lines: Regularly checking and cleaning the condensate drain line can prevent clogs that lead to water damage and mold growth. A clear drain line allows for proper moisture removal, which is essential for the system’s efficiency and longevity.
How Do Split Unit Heat Pumps Compare to Other Heating Solutions?
| Aspect | Split Unit Heat Pumps | Other Heating Solutions |
|---|---|---|
| Efficiency | High efficiency with SEER ratings up to 30. Operates well in moderate climates. | Varies by type; furnaces and boilers can be efficient but usually less so than heat pumps. |
| Cost | Higher upfront cost, typically $3,000 – $7,000. Long-term savings on energy bills. | Lower initial cost for some systems, but potentially higher operational costs over time. |
| Installation | Requires professional installation; less invasive than ducted systems. | Varies; some systems like electric heaters can be DIY, while others may need extensive work. |
| Maintenance | Generally low maintenance; filters need regular cleaning or replacement. | Maintenance needs vary; furnaces require annual check-ups and more frequent repairs. |
| Performance in Extreme Temperatures | Can struggle in very cold temperatures; supplemental heating may be required. | Furnaces and boilers generally perform better in extreme cold. |
| Lifespan | Typically last 15-20 years with proper maintenance. | Furnaces can last 15-30 years, boilers can last up to 50 years. |
| Environmental Impact | Lower carbon footprint, especially if powered by renewable energy. | Fossil fuel systems contribute more to greenhouse gas emissions. |
| Noise Levels | Generally quieter than traditional heating systems. | Can be noisy, especially older models like window AC units or gas furnaces. |