10 Best Cheap Mini Split Air Conditioner 2026 in the United States

The Senville LETO Series Mini Split Air Conditioner is a solid choice for those looking for an affordable and efficient cooling and heating system. With a cooling capacity of about 10,300 BTU, it is suitable for rooms up to 400 square feet, making it ideal for bedrooms, small living spaces, and small commercial areas. Its energy efficiency rating (SEER 19) means it uses electricity fairly efficiently, which can help keep your utility bills reasonable compared to lower-efficiency units, though it is not Energy Star certified. One standout feature is its quiet operation at just 25 decibels, so it won’t disturb your peace while running. This model supports Alexa voice control, allowing convenient remote adjustments through your smart devices—a nice bonus for modern homes. It is a 4-in-1 system, offering cooling, heating (effective down to about 5°F), dehumidifying, and fan functions, making it useful across different seasons. The package includes everything needed for installation except the labor, which must be done by a professional, as DIY installation isn't recommended. The 16-foot line set works well for most typical setups but longer distances might require extra refrigerant.

Warranty coverage is reassuring with 5 years on the compressor and 2 years on parts, although labor costs aren't covered. One limitation is that it isn’t optimized for the newest SEER2 standards, and it’s not Energy Star rated, which might matter if maximum energy savings are a priority. Also, this is a single-zone unit, so it’s best if you only need to cool or heat one room or area. This mini split balances good power, quietness, and smart features at a budget-friendly price, making it a practical pick for small spaces needing reliable year-round comfort.

The DELLA 24000 BTU Mini Split AC offers a good balance between power and efficiency, making it a solid option in the category of cheap mini-split air conditioners. With a cooling capacity of 24000 BTU, it effectively covers spaces up to 1500 square feet, accommodating medium to large rooms or open-plan areas. The 19 SEER2 rating is quite impressive for its price range, providing energy efficiency that can help reduce your electricity bills significantly.

One of its standout features is the quiet operation, with a noise level as low as 35 dB, which is ideal for maintaining a peaceful environment at home. Its smart functionalities, including compatibility with Alexa, WiFi control, and various operational modes like eco energy-saving, sleep, and turbo, enhance user convenience and comfort.

The system's design also supports versatile usage with options for both cooling and heating, which adds year-round utility. However, installation can be challenging. It is not a DIY project, requiring professional installation due to the need for line-set vacuuming and possible adjustments to freon levels. This adds to the initial cost, although the included installation kit may help reduce additional expenses.

For those needing an affordable and efficient air conditioning unit with smart features and quiet operation, and who are comfortable with professional installation, this DELLA model presents a compelling option. While the unit's efficient energy usage and quiet operation are appealing, its performance in extreme temperatures might be a limitation, as it operates down to 5 degrees Fahrenheit. Additionally, the requirement for professional setup might deter some users seeking a completely budget-friendly solution.

The MRCOOL 9000 BTU Mini Split Air Conditioner & Heat Pump is designed for small spaces up to 400 square feet, making it suitable for single rooms in homes, offices, or small commercial areas. Its 9,000 BTU capacity provides reliable heating and cooling, which is great if you want year-round climate control without needing separate equipment. With a SEER rating of 14, this unit offers decent energy efficiency, helping keep electricity costs manageable compared to older or less efficient models. One of the standout features is its quiet operation at 43 decibels, which is about as loud as a soft conversation, so it won’t be distracting when running.

Installation is a strong point here, as it’s designed for easy DIY setup, reducing the need for professional help and lowering installation expenses. This can be a big plus if you want a straightforward system without complex ductwork or costly labor. The unit is wall-mounted and handles both heating and cooling functions, making it versatile for different seasons. However, it supports only one zone, so it’s best for a single room or area rather than whole-house cooling.

The product is well-built and has a modern look, though its size is a bit bulky compared to some other mini splits, which could be a consideration if space or aesthetics are very important. This MRCOOL mini split provides a practical, energy-conscious solution for those needing an affordable, efficient, and relatively quiet HVAC system for small spaces, especially if you prefer a quick and less costly installation.