Looking for an affordable and efficient way to cool and heat your home? DIY mini split systems offer a cost-effective solution that can be installed without professional help, saving you money. Below is a summary table showcasing some of the best cheap DIY mini split options based on their features, capacity, and ease of installation.
Product | BTU Capacity | SEER Rating | Coverage Area | Special Features |
---|---|---|---|---|
MrCool Easy Pro 12k DIY Mini Split | 9K-12K | 18.9-20.2 SEER2 | Up to 1,200 sq ft | Heat pump, Gold Fin condenser, 1 yr labor warranty |
MRCOOL Easy Pro 12,000 BTU | 12,000 | Not specified | Up to 550 sq ft | Smart WiFi control, quiet operation, easy DIY installation |
SMOQIO Mini Split Line Set Cover 10 Ft | For 7,000-24,000 BTU | Not applicable | Accessory product | Protects and decorates mini split lines, easy assembly |
MRCOOL DIY 24k BTU 4th Gen Mini Split | 24,000 | Up to 20.5 SEER2 | Up to 1,000 sq ft | Pre-charged line set, DC inverter, energy star |
MRCOOL 36,000 BTU WiFi Smart DIY Mini Split | 36,000 | Not specified | Up to 1,500 sq ft | Low refrigerant alarm, sleep mode, WiFi control |
MrCool Easy Pro 12k BTU 5th Gen DIY Mini Split System

The MrCool Easy Pro 12k BTU is a versatile ductless heat pump system ideal for cooling and heating spaces ranging from garage rooms to sunrooms up to 1,200 square feet. It boasts a high 18.9-20.2 SEER2 efficiency rating with 9K to 12K BTU cooling capacity, ensuring reliable year-round comfort with an 11.2 HSPF2 heat pump rating.
This system features a gold fin condenser coating that protects against corrosion and rust while maintaining heat transfer efficiency, enhancing durability. It comes with a 16-foot pre-charged lineset that allows easy DIY installation, and a one-year labor warranty adds installation security.
MRCOOL Easy Pro 12,000 BTU Smart WiFi DIY Mini Split

This ductless mini-split system from MRCOOL offers 12,000 BTU capacity designed to efficiently heat and cool small spaces up to 550 square feet. The system supports easy DIY installation, cutting down costs and messy setups.
It includes quiet operation and smart technology that enables remote control via WiFi, which enhances convenience. The inverter system ensures energy-efficient performance and reliable temperature management for year-round comfort.
SMOQIO Mini Split Line Set Cover 3 Inch 10Ft

The SMOQIO Mini Split Line Set Cover is an essential accessory that protects exposed mini split copper lines from weather damage, UV rays, and rodents, significantly extending system longevity. It fits linesets for 7,000 to 24,000 BTU units.
Featuring a two-piece design with clear instructions, it facilitates easy installation for both pre-installed and new lines, while also allowing quick removal for maintenance or repairs. The cover helps maintain a tidy exterior by visually concealing tubing and can be painted to match your wall’s color.
MRCOOL DIY 24k BTU 4th Gen Energy Star Mini Split

This 24,000 BTU MRCOOL mini split is designed for larger spaces up to 1,000 square feet and features an impressive 20.5 SEER2 efficiency rating with a variable speed DC inverter compressor that optimizes power consumption.
The system includes a pre-charged 25-foot quick connect line set that simplifies DIY installation, requiring no special tools or training. It is ENERGY STAR certified, ensuring both environmental friendliness and cost efficiency in operation.
MRCOOL 36,000 BTU WiFi Smart DIY Mini Split AC & Heat Pump

This 36,000 BTU MRCOOL mini split caters to larger areas up to 1,500 square feet and integrates smart features such as WiFi control, a low refrigerant alarm, and air filter cleaning reminders to maintain air quality and prevent costly repairs.
Its DIY-friendly system includes pre-charged quick connect lines requiring no specialized equipment, and it offers low ambient cooling that operates effectively even in temperatures as low as 5°F, ensuring versatile climate control throughout the year.
Buying Guide for Choosing the Best Cheap DIY Mini Split
BTU Capacity and Room Size
Select a mini split with a BTU rating suitable for your room size. Undersized units fail to cool or heat efficiently, while oversized units waste energy. For example, systems around 12,000 BTU cover up to 500-600 sq ft, while 24,000 BTU systems fit rooms up to 1,000 sq ft.
Installation Ease and DIY Compatibility
Look for systems with pre-charged line sets and quick connect fittings to ensure you can install without professional tools or refrigerant handling. Clear installation manuals and warranty coverage also support a successful DIY project.
Energy Efficiency (SEER and HSPF Ratings)
Higher SEER values mean more efficient cooling, reducing electricity bills. For heating, check the HSPF rating of the heat pump. Equipment with ENERGY STAR certification guarantees recognized energy savings and environmentally friendly operation.
Smart Features and Controls
WiFi-enabled units allow remote temperature control for convenience and optimized energy use. Alerts for refrigerant levels or filter cleaning can help maintain system health and improve indoor air quality.
Durability and Warranty
Features like corrosion-resistant coatings (e.g., gold fin condensers) extend equipment life, especially in harsh weather conditions. Choose products with warranties covering labor or parts to protect your investment.
Additional Components and Accessories
Consider purchasing lineset covers or protective accessories to safeguard your system’s external components from damage by weather or pests, ensuring longevity and a polished appearance.