When looking for an all-in-one climate control solution, a mini split AC with heater offers both cooling and heating capabilities in a compact, energy-efficient package. Ideal for homes, offices, and small commercial spaces, these ductless systems provide precise temperature control and easy installation. Below is a summary table of selected mini split units focused on cooling and heating performance, energy efficiency, and smart features to help you make an informed decision.
| Product | Cooling Capacity (BTU) | Heating Capability | Energy Efficiency | Smart Features | Coverage Area |
|---|---|---|---|---|---|
| COSTWAY 12000BTU Mini Split AC & Heater | 12,000 BTU | Heat Pump | 20 SEER2, Inverter Technology | Remote Control, Timer | Up to 750 sq. ft. |
| DELLA Serena 12000 BTU Mini Split AC & Heat Pump | 12,000 BTU | Heat Pump (to -15°C) | 22 SEER2, Inverter | WiFi, Alexa/Google Voice Control | Up to 550 sq. ft. |
| YITAHOME 12000 BTU Mini Split AC Heat Pump | 12,000 BTU | Heat Pump | 20 SEER2, Inverter | WiFi, Alexa Compatible | Up to 750 sq. ft. |
| Mountman 12000 BTU Mini Split AC/Heating System | 12,000 BTU | Heat Pump | 19 SEER2, Inverter | Remote Control, Timer, Sleep Mode | Up to 750 sq. ft. |
| MRCOOL 18000 BTU Mini Split AC & Heat Pump | 18,000 BTU | Heat Pump | Inverter Technology | Simple DIY Installation | Up to 800 sq. ft. |
COSTWAY 12000BTU Mini Split Air Conditioner & Heater

The COSTWAY 12000BTU Mini Split Air Conditioner & Heater combines a high-power compressor with a 1-ton heat pump to deliver efficient cooling and heating up to 750 square feet. Its AHRI certification ensures reliability, while innovative inverter technology reduces power consumption by adjusting the compressor frequency instead of frequently switching it on and off.
This unit offers 5 working modes including auto, cool, dry, heat, and fan modes, plus 4 fan speeds and specialized modes such as sleep, ECO, iFEEL, and turbo for customized comfort all year round. Controlled via a convenient remote, it features a smart timer and low-noise operation for undisturbed rest. The remote’s display screen auto-turns off in 10 seconds of inactivity, enhancing sleep quality.
DELLA Serena 12000 BTU Mini Split AC & Heat Pump

The DELLA Serena 12000 BTU Mini Split AC & Heat Pump stands out with its smart home connectivity, supporting Alexa and Google Home voice commands and full control through the DELLA app. A unique geo-location function automatically adjusts the temperature based on your proximity to save energy and enhance comfort.
It offers a higher energy efficiency rating of 22 SEER2 and uses inverter technology for up to 57% power savings. The unit operates quietly at 23 dBA in mute mode. Besides cooling and heating, features include 4D airflow, multiple fan speeds, sleep and eco modes, turbo function, and dry mode for humidity control. This system covers rooms up to 550 square feet and requires minimal seasonal maintenance.
YITAHOME 12000 BTU Mini Split AC Heat Pump System

The YITAHOME 12000 BTU Mini Split Air Conditioner Heat Pump features advanced inverter technology for optimal performance and 25% energy savings, covering spaces up to 750 square feet. It supports WiFi and Alexa compatibility, allowing remote operation via voice or smartphone.
Users enjoy 5 operational modes including auto, cool, dry, heat, and fan, alongside intelligent functions such as automatic defrosting, self-cleaning, iFEEL temperature sensing, and an innovative “HEALTH” mode that reduces dust and PM2.5 particles. This model maintains quiet operation below 41 decibels, providing a peaceful environment while delivering effective year-round climate control.
Mountman 12000 BTU Mini Split AC/Heating System

The Mountman 12000 BTU Mini Split AC/Heating System offers 4 flexible modes — cool, heat, dry, and fan — with 4 fan speed settings including an ultra-quiet sleep mode at 26 decibels. ECO mode can save up to 30% energy, while a turbo boost function provides rapid temperature adjustment.
This model highlights convenience with a remote control that includes a 24-hour timer and display auto-shutdown to avoid disturbances. Its auto-maintenance system features self-cleaning and defrosting functions to prevent mold and odors, extending unit lifespan. It is designed for steady operation even in temperatures as low as -4°F, making it suitable for all-year comfort.
MRCOOL 18000 BTU 230V Ductless Inverter Mini Split AC & Heat Pump

The MRCOOL 18000 BTU 230V Ductless Inverter Mini Split Air Conditioner & Heat Pump is a high-capacity system suitable for larger rooms up to 800 square feet, offering both cooling and heating in one unit. Featuring 5th generation DIY technology, it enables straightforward installation without professional help.
With inverter technology, this unit maximizes energy efficiency and provides consistent temperature control year-round. It is designed for residential, office, or commercial use, balancing power and quiet operation to maintain comfort in diverse environments.
Buying Guide for Mini Split AC With Heater
When purchasing a mini split AC unit with a heater, consider the following key factors:
Cooling and Heating Capacity
Measure your room size to match the unit’s BTU rating. Smaller rooms (under 550 sq. ft.) require less capacity, whereas larger areas may require units with 18,000 BTU or more for efficient heating and cooling.
Energy Efficiency Ratings
Look for units with high SEER2 ratings and inverter technology. Higher SEER means better energy savings and lower operating costs. Inverter compressors provide smoother temperature adjustments with less energy waste.
Heating Technology
Heat pumps are common for mini splits, providing effective heating down to specific outdoor temperatures (e.g., -15°C or about 5°F). Ensure the heating capabilities meet your climate’s lowest temperatures.
Smart Controls and Connectivity
WiFi-enabled units with voice assistant compatibility (Alexa, Google Home) offer convenient remote control. Features like geo-location sensors and app scheduling can optimize comfort and energy use.
Noise Levels
Quiet operation is critical in bedrooms or offices. Look for units with noise levels under 30 decibels for a peaceful environment.
Installation and Maintenance
Check if the system comes with a complete installation kit and whether DIY installation is possible, as with some MRCOOL models. Additionally, features like self-cleaning and easy-to-wash filters reduce upkeep effort.
Additional Functional Modes
Modes such as dry (dehumidifying), ECO (energy-saving), sleep, and turbo boost enhance user comfort. Choose a unit that offers a variety of modes tailored to your needs.
By weighing these aspects, you can select a mini split AC with heating capabilities that delivers year-round comfort, efficiency, and convenience tailored to your space.