10 Best Cheap Mini Split Air Conditioner 2025 in the United States

The Senville SENA-30HF/T is a tri-zone mini split air conditioner designed to cool or heat multiple rooms with individual controls, making it ideal for homes or small businesses that want personalized comfort in different areas. With a strong 28,000 BTU cooling capacity, it can cover up to around 1500 square feet effectively. It stands out with a high SEER rating of 23, which means it operates efficiently and can help lower your energy bills compared to less efficient models. Noise-wise, it runs quietly at about 25 decibels, so it won’t disturb your daily activities or sleep.

One of its convenient features is Alexa compatibility, allowing voice or app control, which adds ease for users who want smart home integration. The package includes indoor handlers for each zone, a single outdoor condenser, and necessary installation parts, but professional installation is required, which adds to the initial cost and effort.

This system carries a strong warranty—10 years on the compressor and 5 years on parts—which reflects confidence in its durability. The price point may be higher than very basic mini splits, partly due to its smart features and multi-zone capability. This Senville model is suited for users who need a reliable, energy-efficient mini split for multiple rooms and appreciate smart controls. It represents a solid choice if you’re comfortable arranging professional installation and want quieter, customizable temperature control without breaking the bank.

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.