When selecting the best mini split system for cooling and heating, finding units that combine energy efficiency, smart technology, and optimal coverage is essential. Mini splits offer ductless convenience, high SEER ratings, and versatile functionality for year-round comfort. Below is a summary table of top mini splits available on Amazon, highlighting their capacity, smart features, and installation kits, ideal for American homes looking for reliable climate control solutions.
Product | BTU Capacity | Coverage Area (Sq.Ft) | Smart Features | Installation Kit Included |
---|---|---|---|---|
DELLA Motto Series 18000 BTU WiFi Mini Split | 18,000 BTU | Up to 1000 | WiFi, Alexa, 4D Airflow, Multiple Modes | Yes (13ft Copper Lines) |
DELLA Hyper Heat 12000 BTU WiFi Mini Split | 12,000 BTU | Up to 550 | WiFi, Alexa, 5 Modes, Eco Saving | Yes (16.4ft Copper Lines) |
DELLA 27K BTU Dual Zone WiFi Mini Split | 27,000 BTU (12,000 + 18,000) | Up to 1550 | WiFi, Dual Zone Control, Multiple Modes | Yes (16ft Copper Lines ×2) |
MilleLoom 12000 BTU Mini Split AC with WiFi | 12,000 BTU | Up to 750 | WiFi, Google Compatible, 5 Modes | Yes (Complete Kit) |
DELLA Umbra Series 12000 BTU WiFi Mini Split | 12,000 BTU | Up to 650 | WiFi, Alexa, Smart Sensors | Yes (Installation Kit Included) |
Content Navigation
- DELLA Motto Series 18000 BTU WiFi Enabled Mini Split
- DELLA Hyper Heat 12000 BTU WiFi Mini Split with Alexa
- DELLA 27K BTU Dual Zone WiFi Mini Split AC Heat Pump
- MilleLoom 12000 BTU Mini Split AC with WiFi and Remote
- DELLA Umbra Series 12000 BTU WiFi Mini Split AC
- Buying Guide for Mini Split Air Conditioners
DELLA Motto Series 18000 BTU WiFi Enabled Mini Split

The DELLA Motto Series offers 18,000 BTU cooling and heating capacity, covering up to 1000 square feet. Featuring a high 19 SEER2 rating, this mini split is equipped with a ductless inverter heat pump and uses the eco-friendly R32 refrigerant. The system comes with a complete 13-foot copper line installation kit and is ETL Listed and AHRI Certified, ensuring quality and safety compliance. Key smart features include 4D airflow control (up-down left-right), multiple fan speeds, and modes such as eco energy saving, turbo, sleep, and dry. It also supports control via Alexa and WiFi.
DELLA Hyper Heat 12000 BTU WiFi Mini Split with Alexa

This mini split from Della features a 12,000 BTU capacity effective for spaces up to 550 sq.ft and a superior 22 SEER2 energy rating. It uniquely supports operation in extreme cold climates down to -13°F thanks to its hyper heat inverter compressor. The set includes a 16.4-foot pre-flared copper line and drain extension for ease of installation. The system offers 5 modes: cooling, heating, dry, auto, and fan. It also supports WiFi control through the Della+ app and voice commands via Alexa. The unit is ETL and AHRI certified, with a lifetime warranty.
DELLA 27K BTU Dual Zone WiFi Mini Split AC Heat Pump

Ideal for those needing multi-room solutions, this dual zone Della mini split combines 12,000 BTU and 18,000 BTU indoor units, cooling up to 1550 sq.ft total. It boasts a 19 SEER2 rating and uses a heat pump capable of functioning in environments as low as 5°F. Both zones can be individually controlled via WiFi and Alexa, optimizing comfort. The package includes two 16-foot copper line installation kits and supports multiple fan speeds, modes, and energy-saving features.
MilleLoom 12000 BTU Mini Split AC with WiFi and Remote

The MilleLoom unit features a 12,000 BTU inverter compressor and heat pump for efficient cooling and heating in areas up to 750 sq.ft. It holds a 22 SEER2 rating with 25% energy savings and covers multiple modes including Health mode that assists in dust and PM2.5 removal. WiFi-enabled and compatible with Google assistant, it allows smart voice or app control. Additional features include automatic defrost, self-diagnosis, iFEEL temperature sensor, sleep mode, and a quiet operation design suitable for all climates.
DELLA Umbra Series 12000 BTU WiFi Mini Split AC

The Umbra Series by Della offers a 12,000 BTU inverter mini split designed for rooms up to 650 sq.ft. It operates efficiently at 17.5 SEER and uses the environmentally friendly R32 refrigerant. Its smart sensor detects temperature via remote control for precise airflow and cooling adjustments, supporting multiple user modes and fan speeds. Installation requires professional handling, with line-set vacuuming needed. The system includes a full installation kit and works with Alexa voice commands for user convenience.
Buying Guide for Mini Split Air Conditioners
Cooling and Heating Capacity
Choose a mini split with a BTU capacity suitable for your room size. Undersized units may not cool effectively, while oversized systems waste energy. Typically, 12,000 BTU covers 500-750 sq.ft, 18,000 BTU up to 1000 sq.ft, and dual-zone units can cover larger combined areas.
Energy Efficiency
Look for higher SEER ratings (Seasonal Energy Efficiency Ratio), which indicate lower electricity consumption for better cooling performance. Units with SEER ratings above 19 and inverter technology offer superior energy savings, reducing monthly energy bills.
Refrigerant Type
Modern mini splits use R32 refrigerant, which has lower environmental impact compared to older types like R410A. R32 also offers better cooling efficiency and is becoming the industry standard.
Smart Control and Connectivity
WiFi-enabled mini splits that work with Alexa, Google Assistant, and dedicated mobile apps provide convenient remote control. Features like programmable timers, sleep modes, and energy-saving settings enhance usability and comfort.
Installation Considerations
Professional installation is generally recommended to ensure correct setup, refrigerant levels, and safety compliance. Check if the unit includes a complete installation kit with copper lines and drain pipes. Line-set length alterations may require refrigerant adjustment.
Operating Temperature Range
If you live in colder climates, select mini splits rated to operate at low temperatures (some down to -13°F). Heat pumps with hyper heat or cold climate rating provide warm air efficiently during winter.
Additional Features
- 4D airflow adjustment for optimal air distribution
- Multiple fan speeds and operational modes (cool, heat, dry, fan, auto)
- Self-diagnosis and auto defrost functions
- Low noise operation for bedroom or office use
By weighing these factors, you can identify the best mini split system tailored to your specific cooling and heating needs, ensuring energy-efficient comfort year-round.