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10 Best Mini Split Units 2025 in the United States

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Our Top Picks

#2

MRCOOL 24000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space

Rating
9.1
Installation and Maintenance
BTU Capacity
Noise Level

Most important from
308 reviews

Installation and Maintenance
Installation is straightforward and manageable for DIY enthusiasts, saving on professional setup costs.
BTU Capacity
The unit delivers reliable cooling performance even in challenging heat and humidity conditions.
Noise Level
Quiet operation ensures it doesn’t disrupt living or working environments.
Number of Zones
This mini-split is highly recommended for those needing efficient heating and cooling in a single zone.

The MRCOOL Easy Pro 24,000 BTU mini-split unit is a solid choice for heating and cooling a space up to about 1,050 square feet. Its 24,000 BTU capacity should provide reliable comfort for medium-sized rooms or small homes. One of its biggest advantages is the easy DIY installation, which can save you money on professional setup and reduce hassle. This unit also operates quietly at 43 decibels, making it suitable for bedrooms or living areas where low noise is important. It offers both heating and cooling year-round, controlled conveniently through WiFi and compatible with voice assistants like Google and Alexa, which adds a modern touch and ease of use.

The product has a 2-star BEE rating, indicating it may consume more power compared to other mini-splits with higher energy efficiency ratings. It supports only a single zone, so it is best suited for one main area rather than multiple rooms. Maintenance and running costs should be reasonable due to the inverter technology.

This MRCOOL model is ideal if you want a quiet, easy-to-install, and smart-controlled mini-split for a single zone, although it may not be the most energy-efficient option available.

Rating
9.1
Installation and Maintenance
BTU Capacity
Noise Level

Most important from
308 reviews

Installation and Maintenance
Installation is straightforward and manageable for DIY enthusiasts, saving on professional setup costs.
BTU Capacity
The unit delivers reliable cooling performance even in challenging heat and humidity conditions.
Noise Level
Quiet operation ensures it doesn’t disrupt living or working environments.
Number of Zones
This mini-split is highly recommended for those needing efficient heating and cooling in a single zone.
#3

MRCOOL 18000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump System, Easy Pro Series - Wall-Mounted AC Unit w/ Heating and Cooling for Home, Office & Commercial Space

Rating
8.2
BTU Capacity
Noise Level
Installation and Maintenance

Most important from
308 reviews

BTU Capacity
The unit cools rooms quickly and effectively, easily handling spaces around 200 square feet and larger areas like a renovated first floor.
Noise Level
The compressor operates quietly without taking up excessive space, maintaining a peaceful environment during use.
Installation and Maintenance
Installation is straightforward for experienced DIYers, with most necessary tools included, though a few additional items like a hole saw and adjustable wrenches are needed.

The MRCOOL 18000 BTU mini-split is a versatile ductless air conditioner and heat pump suitable for rooms up to around 800 square feet, making it a solid choice for medium-sized spaces like homes, offices, or small commercial areas. Its combined heating and cooling function means you can rely on it year-round, which adds convenience. The unit operates quietly at about 43 decibels, so it won’t be disruptive in most settings. It includes useful features such as a timer mode, refrigerant leakage detection, and easy-to-clean filters with Active Clean Technology that helps maintain indoor air quality.

The DIY-friendly installation is a plus for those comfortable with setup, though professional help might still be preferable for some. One notable downside is the relatively low 2-star BEE energy rating, which suggests it may not be the most energy-efficient option compared to others with higher ratings. If energy efficiency is a priority, this could be a drawback. Also, this is a single-zone system, suitable if you only need to control one area. Its size and power make it a practical, straightforward solution but check energy costs and installation needs before buying.

Rating
8.2
BTU Capacity
Noise Level
Installation and Maintenance

Most important from
308 reviews

BTU Capacity
The unit cools rooms quickly and effectively, easily handling spaces around 200 square feet and larger areas like a renovated first floor.
Noise Level
The compressor operates quietly without taking up excessive space, maintaining a peaceful environment during use.
Installation and Maintenance
Installation is straightforward for experienced DIYers, with most necessary tools included, though a few additional items like a hole saw and adjustable wrenches are needed.

Buying Guide for the Best Mini Split Units

Choosing the right mini-split unit for your home or office can significantly impact your comfort and energy efficiency. Mini-split units are a great option for heating and cooling individual rooms or zones without the need for extensive ductwork. To make an informed decision, it's important to understand the key specifications and how they relate to your specific needs. Here are the main factors to consider when selecting a mini-split unit.
BTU CapacityBTU (British Thermal Unit) capacity measures the amount of heat a unit can remove from a room per hour. This spec is crucial because it determines the unit's ability to effectively heat or cool a space. Units with too low BTU capacity will struggle to maintain the desired temperature, while units with too high BTU capacity will cycle on and off too frequently, leading to inefficiency and wear. To choose the right BTU capacity, consider the size of the room or area you want to condition. For small rooms (up to 300 sq. ft.), a unit with 9,000 BTUs may suffice. Medium rooms (300-500 sq. ft.) typically require 12,000 BTUs, while larger rooms (500-800 sq. ft.) may need 18,000 BTUs or more.
SEER RatingThe SEER (Seasonal Energy Efficiency Ratio) rating measures the efficiency of the mini-split unit over a typical cooling season. A higher SEER rating indicates better energy efficiency, which can lead to lower electricity bills. SEER ratings typically range from 13 to 25 or higher. For moderate climates, a SEER rating of 16-18 is usually sufficient. In hotter climates, a higher SEER rating (20+) can provide better energy savings. Consider your local climate and how often you'll be using the unit to determine the appropriate SEER rating for your needs.
HSPF RatingHSPF (Heating Seasonal Performance Factor) rating measures the efficiency of the mini-split unit during the heating season. Similar to SEER, a higher HSPF rating indicates better efficiency. HSPF ratings typically range from 8 to 13. If you live in a colder climate and plan to use the unit for heating, look for a higher HSPF rating (10+). For milder climates, an HSPF rating of 8-9 may be adequate. Your heating needs and local climate will guide you in selecting the right HSPF rating.
Number of ZonesMini-split units can be designed to serve multiple zones or rooms. This spec is important if you want to control the temperature in different areas independently. Single-zone units are ideal for conditioning one room, while multi-zone units can handle two or more rooms. Consider the layout of your space and how many areas you need to heat or cool. If you have an open floor plan or only need to condition one room, a single-zone unit may be sufficient. For homes with multiple rooms or floors, a multi-zone unit can provide more flexibility and comfort.
Noise LevelThe noise level of a mini-split unit is measured in decibels (dB) and indicates how loud the unit will be during operation. This spec is important for maintaining a comfortable and quiet environment, especially in bedrooms or living areas. Noise levels typically range from 19 dB (very quiet) to 60 dB (comparable to normal conversation). If noise is a concern, look for units with lower dB ratings. For bedrooms and quiet spaces, aim for a unit with a noise level below 30 dB. For living areas, a noise level below 40 dB is generally acceptable.
Installation and MaintenanceProper installation and regular maintenance are crucial for the efficient operation and longevity of your mini-split unit. This spec includes the ease of installation, the availability of professional installation services, and the maintenance requirements. Some units come with DIY installation kits, while others may require professional installation. Consider your comfort level with installation and whether you prefer to hire a professional. Additionally, check the maintenance requirements, such as filter cleaning and refrigerant checks, to ensure you can keep the unit running smoothly.

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