If you’re considering a mini split air conditioner diy setup, you’re likely seeking a cost-effective, flexible way to cool or heat specific rooms without professional installation. The best overall pick, MrCool Easy Pro 12k BTU, combines high efficiency with straightforward installation. For those valuing quick setup, the Albott 12,000 BTU offers a quick-fit design, while the YITAHOME 12000 BTU adds smart features like WiFi compatibility. The main tradeoffs include balancing ease of installation, energy efficiency, and upfront cost. Keep reading for a detailed comparison to find the best fit for your DIY project.
Listen free for 30 days with Audible
Thousands of audiobooks and originals — cancel anytime.
Start your free trialAs an affiliate, we earn on qualifying purchases.
Complete the kit
Key Takeaways
- Top-performing units like MrCool Easy Pro deliver high efficiency and reliable operation, ideal for serious DIYers.
- Many options include pre-charged linesets, simplifying installation but often at a higher initial cost.
- Smart features such as WiFi control are increasingly common but may add complexity and expense.
- Units with quick-fit or no-vacuum setups reduce installation difficulty but might limit customization or long-term flexibility.
- Choosing a system with comprehensive warranty and support can save headaches during DIY installation and operation.
| mini split air conditioner diy | Voltage | Noise Level | SEER2 |
|---|---|---|---|
| 12000BTU Mini Split Air Condit | 115V | 38 db | — |
| Rellytech 11500 BTU Mini Split | 115V | 29dB | 17 |
| MrCool Easy Pro 12k BTU 19.5 S | — | — | 19.5 |
| Tian Shan 9000BTU Mini Split A | 115V | — | — |
| MrCool Easy Pro 24k BTU 18.9 S | — | — | 18.9-20.2 |
| GarveeTech DIY Mini Split AC/H | 115V | 25 dB | 19 |
| Albott 12,000 BTU Mini Split A | 115V | under 29dB | 18 |
| MRCOOL DIY Select 12K BTU Mini | 115V | 17.5 dB | — |
| MrCool DIY Select Mini Split w | 120V | — | 17.5 |
| YITAHOME 12000 BTU Mini Split | 115V | below 41 dB | 20 |
| Upstreman 12,000 BTU DIY Mini | 230V | Quiet operation | — |
More Details on Our Top Picks
12000BTU Mini Split Air Conditioner Heat Pump, 19 SEER2 Inverter Compressor AC Unit Cools Rooms up to 750 Sq. Ft, 115V Ductless Split AC with Pre-Charged Condenser & Installation Kit
This model stands out for delivering reliable heating and cooling in spaces up to 750 sq.ft., making it a versatile choice for year-round comfort. Compared with the MrCool Easy Pro 12k BTU, it offers similar efficiency but includes a pre-charged condenser that simplifies installation, especially for DIYers. However, it requires a new outdoor unit, which adds to the setup complexity and cost. The inverter technology ensures quiet operation and consistent temperature, while the eco-friendly R-32 refrigerant minimizes environmental impact. The main tradeoff is its limited coverage and the need for a compatible outdoor unit, which might not suit larger or existing setups.
Pros:- Efficient year-round heating and cooling with inverter technology
- Eco-friendly R-32 refrigerant with lower GWP
- Quiet operation suitable for bedrooms or offices
- Includes pre-charged condenser and installation kit
Cons:- Requires installation of a new outdoor unit, adding complexity
- Limited to spaces up to 750 sq.ft., not suitable for larger areas
Best for: Homeowners seeking an all-in-one climate solution with quiet operation and eco-friendliness, ready for DIY installation if they can handle outdoor unit setup.
Not ideal for: Those with larger spaces over 750 sq.ft. or existing outdoor units, since it requires a new outdoor component and has limited coverage.
- Cooling Power:12000 BTU
- Refrigerant:R-32
- Inverter Type:Has Inverter
- Application:Residential
- Voltage:115V
- Wattage:210 watts
- Noise Level:38 db
Our verdict“This unit is ideal for DIYers wanting a reliable, quiet, and eco-friendly mini split for medium-sized spaces with minimal outdoor setup fuss.”
Rellytech 11500 BTU Mini Split AC/Heating System 17 SEER2 Ductless Inverter
This unit excels in quiet operation at just 29dB, making it perfect for bedrooms and quiet spaces, and offers flexible modes including dehumidify and sleep. Unlike the MrCool Easy Pro 12k BTU, which targets larger spaces, this model is optimized for smaller rooms up to 550 sq.ft., but it requires professional installation and vacuum-pumping, which complicates DIY efforts. Its self-cleaning function helps maintain air quality, while the copper line set and 5-year warranty add value. The main tradeoff is the need for professional setup and additional costs for vacuuming equipment, which diminishes its appeal for complete DIYers.
Pros:- Extremely quiet at 29dB for peaceful environments
- Energy-efficient inverter reduces power use
- Self-cleaning feature maintains air quality
- Includes copper line set and 5-year warranty
Cons:- Requires professional installation and vacuum-pumping
- Power cord not included, additional setup needed
Best for: Homeowners needing a quiet, energy-efficient unit for small to medium rooms, willing to pay for professional installation or with some HVAC experience.
Not ideal for: Complete DIY beginners or those wanting plug-and-play solutions, because of the need for vacuum-pumping and professional setup.
- BTU:11500
- SEER2:17
- Coverage:550 sq.ft.
- Refrigerant:R32
- Voltage:115V
- Noise Level:29dB
Our verdict“This model suits buyers who prioritize quiet, energy efficiency, and are comfortable with some professional installation steps for small spaces.”
MrCool Easy Pro 12k BTU 19.5 SEER2 Ductless Heat Pump Split System 5th Generation
Compared with smaller units like the Rellytech 11500 BTU, this system offers broader coverage up to 1200 sq.ft. and higher efficiency ratings, making it suitable for larger homes. Its 19.5 SEER2 rating and durable gold fin condenser coating ensure long-term performance, but it demands a DIY installation experience, especially since it’s not plug-and-play. The included 16-foot line set simplifies setup, yet the limited 1-year labor warranty means potential repair costs fall on the owner. This model balances high efficiency with space capacity, but the required expertise and warranty limitations are drawbacks for casual DIYers.
Pros:- High efficiency with up to 19.5 SEER2 rating
- Suitable for spaces up to 1200 sq.ft.
- Durable gold fin condenser coating for longevity
- Includes a 16-foot line set for easier DIY installation
Cons:- Limited to 1-year labor warranty, potentially costly repairs
- Requires DIY skills and some HVAC knowledge
Best for: DIY enthusiasts with medium to large homes looking for a high-efficiency, durable heat pump with a relatively straightforward installation process.
Not ideal for: Complete beginners or those with very tight budgets, as the installation complexity and limited warranty could pose issues.
- BTU Capacity:9K-24K
- SEER2:19.5
- HSPF2:11.2
- Coverage Area:500-1200 sq ft
- Line Set Length:16 ft
- Warranty:1 year labor
Our verdict“This pick is best for experienced DIYers aiming for a high-efficiency system capable of cooling and heating larger areas with durable components.”
Tian Shan 9000BTU Mini Split Air Conditioner & Heater – Ductless, Energy Efficient, 115V, 0.75 Ton
This compact system provides reliable heating and cooling for spaces up to 450 sq.ft., making it ideal for small rooms or apartments. Its energy efficiency rating of 15 SEER helps reduce power costs, and the ETL and UL certifications attest to its safety and reliability. Compared with larger units like the 12000BTU Mini Split, it’s easier to install and fits tighter spaces, but its limited coverage means it won’t suit bigger areas. The requirement for 150V power might be a hurdle in some homes, and its smaller capacity can be insufficient for larger rooms.
Pros:- Compact size ideal for small rooms
- Energy-efficient at 15 SEER
- Certified safe with ETL and UL approvals
- DIY-friendly installation
Cons:- Limited to 450 sq.ft., not suitable for larger areas
- Requires 150V supply, which may not be standard in all homes
Best for: Small space dwellers or renters seeking a straightforward, energy-efficient DIY mini split for rooms up to 450 sq.ft.
Not ideal for: Larger households or spaces over 450 sq.ft., due to limited cooling and heating capacity, and homes without 150V power supply.
- Cooling Capacity:9000 BTU
- Heating Capacity:9000 BTU
- Area Coverage:450 sq.ft.
- Voltage:115V
- Ton:0.75 Ton
- SEER:15
Our verdict“This model makes sense for small, energy-conscious spaces where DIY installation is preferred and space is limited.”
MrCool Easy Pro 24k BTU 18.9 SEER2 Ductless Heat Pump Split System, 5th Generation, DIY Mini Split with 16ft Lineset & 1-Year Labor Warranty
Compared to the smaller 12000BTU units, this 24,000 BTU system is designed for larger homes up to 1200 sq.ft., providing strong heating and cooling performance with an impressive 18.9-20.2 SEER2 rating. Its included 16-foot lineset simplifies the installation process for confident DIYers, and the durable corrosion-resistant coating enhances longevity. The main tradeoff is its high power consumption and the need for some technical skill to properly install, especially since the warranty covers only 1 year for labor. This system is ideal for those with experience looking to cool or heat larger spaces efficiently, but it may be overkill or too complex for casual DIYers.
Pros:- High efficiency with up to 20.2 SEER2 rating
- Suitable for large areas up to 1200 sq.ft.
- Includes 16-foot lineset for straightforward DIY setup
- Durable, corrosion-resistant condenser coating
Cons:- Requires technical knowledge for installation
- Limited 1-year labor warranty could lead to higher repair costs
Best for: Experienced DIYers seeking a high-capacity, energy-efficient solution for large spaces up to 1200 sq.ft., willing to handle technical installation details.
Not ideal for: Beginners or users with limited HVAC experience, due to installation complexity and limited labor warranty coverage.
- BTU Capacity:24,000 BTU
- SEER2:18.9-20.2
- HSPF2:11.2
- Coverage Area:up to 1200 sq ft
- Included Lineset Length:16 ft
- Warranty:1-year labor
Our verdict“This system is best suited for seasoned DIYers aiming for a large-capacity, high-efficiency mini split with straightforward installation features.”
GarveeTech DIY Mini Split AC/Heating System, 12000 BTU, 19 SEER2, Ductless, 115V, Heat Pump, Up to 750 Sq. Ft.
This system stands out for its impressive combination of high SEER2 rating and ultra-quiet operation, making it ideal for bedrooms and offices where noise must be minimal. Compared with the Albott system, it offers better energy savings thanks to inverter control and a 19 SEER2 rating, but it comes at a higher price and requires professional installation to maximize efficiency. The self-cleaning feature reduces maintenance, and the complete kit simplifies setup for DIYers committed to a reliable, long-term solution. Its 25 dB noise level is a significant advantage over many competitors, but the limited coverage up to 750 sq. ft. could be restrictive for larger spaces.
Pros:- High 19 SEER2 energy efficiency rating reduces operating costs
- Whisper-quiet operation at 25 dB ideal for sensitive spaces
- Self-cleaning feature minimizes maintenance efforts
- Complete kit simplifies installation for DIY enthusiasts
Cons:- Limited to spaces up to 750 sq. ft., not suitable for larger rooms
- Requires professional installation for best performance
- Price point not specified, potentially higher than basic systems
Best for: Homeowners seeking a quiet, energy-efficient climate control solution for small to medium bedrooms or offices.
Not ideal for: Large open-plan areas over 750 sq. ft. or those on a tight budget, since installation costs and space limits may be restrictive.
- Cooling Capacity:12000 BTU
- Heating Capacity:12300 BTU
- SEER2:19
- HSPF2:8.5
- Voltage:115V
- Coverage Area:750 sq. ft.
- Noise Level:25 dB
- Warranty:5-year compressor
Our verdict“This pick is best for buyers who prioritize quiet operation and energy savings in smaller spaces willing to invest in professional setup.”
Albott 12,000 BTU Mini Split AC & Heating System with Quick-Fit Set
The Albott system excels in ease of installation, making it a strong choice for DIYers comfortable with basic electrical work. Unlike the GarveeTech, which emphasizes energy efficiency and quietness, Albott prioritizes user-friendly setup with pre-wired units and step-by-step guides, though its slightly lower SEER2 of 18 means it might not save as much on energy bills. Its quiet operation under 29 dB is suitable for residential settings, but the missing power cord can be an inconvenience, requiring additional purchase or wiring. The flexible control options and long warranty add to its appeal for those new to mini splits or seeking straightforward, reliable climate control.
Pros:- Pre-wired indoor unit simplifies DIY installation
- Quiet operation under 29dB suitable for bedrooms
- Flexible control options including remote and smart app
- Long 8-year parts warranty adds peace of mind
Cons:- Power cord not included, requiring additional purchase
- Installation still needs some electrical knowledge
- Limited to 750 sq. ft. coverage
Best for: DIYers seeking an easy-to-install mini split with flexible control options and a manageable learning curve.
Not ideal for: Experienced HVAC technicians or those needing large capacity units over 750 sq. ft., due to its limited coverage and DIY focus.
- BTU:12,000
- Coverage Area:750 sq. ft.
- Voltage:115V
- SEER2:18
- Temperature Range:5°F–122°F
- Noise Level:under 29dB
- Warranty:5-year compressor, 8-year parts
Our verdict“Ideal for DIY beginners who want a straightforward, quiet system with smart controls for small spaces.”
MRCOOL DIY Select 12K BTU Mini Split Heat Pump, 11.5′ Line Set, 155V, White
The MRCOOL DIY Select offers a straightforward DIY experience with its pre-charged line set, making it suitable for those with basic electrical skills. Its 17.5 SEER2 efficiency and quiet operation (as low as 17.5 dB) compare favorably with the Albott, especially for small rooms up to 550 sq. ft. However, its limitation to single-zone applications and the need for a 115V power supply restrict its versatility for larger or multi-room setups. The pre-charged line set simplifies installation significantly, but indoor effectiveness may decrease in very large or poorly insulated rooms, and it doesn’t include a heat strip for extreme cold.
Pros:- Pre-charged line set simplifies DIY installation
- High energy efficiency with inverter technology
- Very quiet operation at 17.5 dB
- Smart control compatibility enhances usability
Cons:- Limited to single-zone applications
- Requires 115V power, not suitable for larger spaces
- Indoor unit effectiveness may decrease in larger rooms
Best for: Homeowners wanting a simple, efficient DIY mini split for small to medium rooms with minimal fuss.
Not ideal for: Larger spaces over 550 sq. ft. or multi-zone needs, due to its single-zone design and lower capacity.
- BTU:12,000
- Line Set Length:11.5 ft
- Voltage:115V
- Cooling Efficiency:17.5 SEER2
- Heating Efficiency:9.0 HSPF2
- Noise Level:17.5 dB
Our verdict“Best suited for small spaces where quiet, energy-efficient operation and simple DIY installation are priorities.”
MrCool DIY Select Mini Split with Line Set & 1-Year Labor Warranty
This system provides a flexible solution for spaces between 500 and 1,200 sq. ft., with inverter technology that boosts efficiency and WiFi control for remote management. Compared to the smaller MRCOOL model, it covers a broader area, making it suitable for living rooms or larger bedrooms. The pre-charged line set and straightforward DIY installation are significant advantages, but it requires a new outdoor unit for outdoor compatibility, adding cost and complexity. Noise at 44.5 dB is acceptable but more noticeable than smaller models, and the unit is primarily designed for single-zone use, limiting multi-room configurations.
Pros:- Pre-charged line set simplifies installation
- WiFi control enables remote operation
- Covers larger spaces up to 1,200 sq. ft.
- Inverter technology enhances efficiency
Cons:- Requires a new outdoor unit for outdoor compatibility
- Limited to single-zone coverage
- Noise level at 44.5 dB may be noticeable indoors
Best for: Homeowners needing a versatile, DIY-ready system for medium to large rooms with year-round climate control.
Not ideal for: Those with multi-zone needs or unwilling to purchase a compatible outdoor unit separately, since it’s designed for single-zone use.
- Cooling Power:12000 BTU
- Coverage:500-1200 sq ft
- Line Set Length:11.5 ft
- Voltage:120V
- SEER2:17.5
- Noise:44.5 dB
- Refrigerant:R-454b
Our verdict“Ideal for larger single-zone spaces where DIY installation with smart controls and efficiency are priorities.”
YITAHOME 12000 BTU Mini Split AC/Heating System, Ductless, WiFi Enabled, 115V, 20 SEER2 Energy Efficient Inverter, Compatible with Alexa
The YITAHOME system leads in energy efficiency with a 20 SEER2 rating, making it an excellent choice for those who want smart control with Alexa and WiFi compatibility. Its inverter technology delivers 25% savings over less efficient models like the Albott, and its quiet operation below 41 decibels makes it suitable for bedrooms or quiet spaces. The comprehensive package, including indoor and outdoor units and an installation kit, adds convenience, but installation requires a licensed HVAC professional, which can increase overall costs. Limited to 750 sq. ft., it suits medium-sized rooms, and the dual-package shipping may complicate delivery.
Pros:- High 20 SEER2 efficiency reduces energy costs
- WiFi and Alexa compatibility for smart control
- Quiet operation below 41 decibels
- Suitable for all-weather conditions from 5°F to 118°F
Cons:- Installation requires a licensed professional
- Ships in two separate packages, complicating delivery
- Excludes certain housing components like shut-off valves
Best for: Tech-savvy homeowners who want high energy savings, smart home integration, and reliable all-weather operation.
Not ideal for: DIYers without HVAC experience or those with large, multi-zone needs, as installation is professional-only and coverage is limited.
- BTU:12000
- Voltage:115V
- SEER2:20
- Coverage Area:750 sq. ft.
- Noise Level:below 41 dB
- Temperature Range:60℉ to 90℉
- Modes:auto, cool, dry, heat, fan
Our verdict“Best for users seeking a high-efficiency, smart-enabled mini split with reliable all-weather performance but willing to pay for professional installation.”
Upstreman 12,000 BTU DIY Mini Split AC & Heat Pump 230V, No Vacuum Required
This option stands out for its user-friendly installation process, thanks to a pre-charged system that eliminates the need for vacuuming—something that can be a challenge with units like the MrCool Easy Pro. Compared to traditional systems, the Upstreman 12,000 BTU simplifies setup, making it ideal for homeowners with minimal HVAC experience. Its smart app control and quiet operation enhance everyday comfort, while inverter technology ensures energy efficiency over long-term use. However, the absence of a power cord means an extra purchase, and the shipment split into two packages can delay installation, which might frustrate those eager to get started quickly. For those comfortable with basic electrical work and looking for a reliable, all-season mini split that minimizes installation fuss, this model offers a compelling balance of ease and performance.
Pros:- Pre-charged system simplifies DIY installation, reducing need for professional help
- Smart app control for remote operation and monitoring
- Quiet operation and inverter technology for energy savings
- All-season performance with auto defrost and self-cleaning features
Cons:- Power cord not included, requiring an extra purchase
- Weight split into two packages may cause delays
- Professional installation still recommended for optimal performance
Best for: DIY homeowners who want an easy-to-install, all-season mini split with smart controls and energy efficiency.
Not ideal for: Property owners seeking a plug-and-play solution without additional wiring or electrical work, or those who prefer included accessories for quick setup.
- BTU:12,000
- Voltage:230V
- Refrigerant:R32
- Operation Temperature Range:5°F to 131°F
- Warranty:18 months
- Noise Level:Quiet operation
- Control:Smart app
- Inverter Technology:Yes
Our verdict“This mini split is ideal for DIY enthusiasts who prioritize ease of installation and versatile performance, accepting some minor setup inconveniences.”
How We Picked
I evaluated these mini split systems based on performance, ease of installation, build quality, and value. Each unit was selected for its suitability for DIY installation, considering factors like pre-charged linesets, included tools, and installation complexity. Additional emphasis was placed on energy efficiency ratings, warranty coverage, and smart features, as these impact long-term satisfaction. The ranking reflects a balance between cost, usability, and reliability, aiming to guide both experienced DIYers and newcomers in making informed choices.Factors to Consider When Choosing Mini Split Air Conditioner Diy
When selecting a mini split air conditioner for DIY installation, it’s important to weigh several factors to ensure you choose a system that fits your needs and skill level. Consider installation complexity, energy efficiency, system capacity, and features like WiFi control. Understanding these elements can help avoid common pitfalls, such as underestimating the skill required or selecting a unit too small or large for your space.Installation Ease and Setup
Many DIY mini splits now feature pre-charged linesets and no-vacuum requirements, significantly reducing installation time and complexity. However, some units still demand basic refrigerant handling skills or tools—it’s vital to match your experience level with the system’s setup requirements. Opting for a model with clear instructions and good support can make the process smoother, especially for first-timers.
Capacity and Room Size Compatibility
Choosing the right capacity is key; a unit that’s too small won’t cool effectively, while an oversized system can waste energy and lead to uneven temperatures. Always measure your space and match it to the unit’s BTU rating. Some models specify coverage area, helping you pick the right capacity for your room size, which is particularly helpful for DIY projects where over- or under-sizing can impact performance.
Energy Efficiency and Operating Costs
Higher SEER ratings typically mean lower running costs, which can save you money over time. Many DIY models now feature inverter technology, providing better temperature control and efficiency. Keep in mind that more energy-efficient units might come at a higher upfront cost but tend to pay off in reduced electricity bills, especially if you plan to run the system frequently.
Smart Features and Connectivity
Smart controls, like WiFi connectivity and voice assistant compatibility, add convenience but may also increase the initial price and complexity. If you prefer simple operation, look for models without smart features. Conversely, those wanting remote control and scheduling should prioritize units with reliable app support and integration options.
Warranty, Support, and Long-term Reliability
DIY installation can sometimes lead to issues that require support. Units with comprehensive warranties and accessible customer service can make troubleshooting easier. It’s worth investing in brands known for reliable support, especially if you’re new to HVAC projects or if the system is critical for year-round comfort.
Frequently Asked Questions
Can I install a mini split air conditioner myself without any HVAC experience?
While some mini split systems are designed for DIY installation, a baseline understanding of refrigerant lines, electrical wiring, and mounting is essential. Many models now include pre-charged linesets and step-by-step instructions that simplify the process. However, handling refrigerant or electrical components improperly can be hazardous or lead to system failure, so assess your comfort and skill level before attempting installation without professional help.
What is the typical cost range for DIY mini split systems?
Prices generally range from around $1,000 to $3,000, depending on capacity, features, and brand. Entry-level units with basic features tend to be more affordable, while those with smart connectivity, higher efficiency, or larger capacity cost more. Keep in mind that additional expenses, such as tools or professional inspection, might be necessary if you’re not fully comfortable with installation.
Are there any common issues with DIY mini splits I should watch out for?
Common challenges include improper refrigerant line installation, which can cause leaks or performance issues, and electrical wiring mistakes. Insufficient insulation or poor placement can also reduce efficiency. Choosing units with clear instructions, good customer support, and pre-charged lines helps mitigate these risks, but a cautious approach and careful planning are essential to avoid costly mistakes.
How long does it typically take to install a DIY mini split?
Installation times vary based on experience, but most DIY setups can be completed in a few hours to a day. Pre-charged, no-vacuum systems tend to be quicker, often taking 2-4 hours, while more complex units may require additional time for refrigerant connection and wiring. Planning and readiness can make the process smoother and faster.
Should I hire a professional for certain parts of the installation?
If you lack experience with electrical wiring, refrigerant handling, or mounting heavy equipment, hiring a professional is advisable for those steps. Even with DIY systems, a professional inspection can verify proper setup and safety compliance, especially if you plan to run the unit constantly or in a critical space. Investing in professional help for specific tasks can prevent future issues and ensure safety.
Conclusion
For those seeking a straightforward, reliable DIY mini split, MrCool Easy Pro stands out as the best overall choice, balancing performance and ease of installation. Budget-conscious buyers should consider models like Albott or Upstreman, which offer decent features at lower prices. If you want smart home integration, YITAHOME provides WiFi control with solid efficiency. Beginners or casual users will find models with quick-fit setups most approachable, while experienced DIYers might opt for units with higher capacity or advanced inverter tech. Ultimately, your choice should match your space, skill level, and long-term goals.
As an affiliate, we earn on qualifying purchases.Fall Picks
fall essentials
