Finding the best room air conditioner and heater combo enhances comfort in all seasons without needing separate devices. This guide reviews top portable and window air conditioners with heating functions that suit different room sizes and budgets, emphasizing key features like BTU capacity, energy efficiency, and smart controls.
Product | Cooling BTU | Heating BTU | Coverage Area | Key Features |
---|---|---|---|---|
BLACK+DECKER Smart Portable AC with Heat | 14,000 | 12,000 | Up to 700 sq. ft. | Wi-Fi control, dehumidifier, fan, portable |
SereneLife Small Portable AC with Heat | 10,000 | Built-in Heat | Up to 450 sq. ft. | 4 modes, remote, window exhaust kit |
Whynter Portable AC & Heater Dual Hose | 14,000 | Included | Up to 500 sq. ft. | Quiet operation, auto drain, dual hose |
Midea 12,000 BTU Smart Inverter AC with Heat | 12,000 | Supplemental Heat | Up to 550 sq. ft. | Energy Star, inverter tech, smart control |
Frigidaire 4-in-1 Smart Portable AC & Heat | 14,000 | 10,000 | Up to 700 sq. ft. | Wi-Fi, quiet, sleep and dry modes |
BLACK+DECKER Smart Portable Air Conditioner with Heat

The BLACK+DECKER BPACT14HWT is a four-in-one portable air conditioner featuring 14,000 BTU cooling and 10,000 BTU heating power, ideal for spaces up to 700 square feet. Besides cooling and heating, it operates as a dehumidifier and fan, offering versatile year-round comfort.
Its compact design (16.5” x 14.06” x 27.09”) makes it easy to move, and smart capabilities allow control through an app, Amazon Alexa, or Google Assistant. The “Follow Me” remote sensor helps maintain precise temperatures at the remote location. This unit is suitable for bedrooms, living rooms, or offices requiring smart, portable climate control.
SereneLife Small Air Conditioner Portable 10,000 BTU with Heat

The SereneLife Portable AC offers 10,000 BTU cooling combined with built-in heating and dehumidifier functions, perfect for rooms up to 450 sq. ft. It includes a remote control and rolling wheels making portability smooth and user-friendly. The window mount exhaust kit simplifies setup.
Equipped with 4 operating modes (cooling, heating, dehumidifier, fan) and an automatic swing function for optimal air circulation, it adapts well to various seasonal needs and room environments, making it a practical choice for apartments and small rooms.
Whynter Portable Air Conditioner 14,000 BTU & Heater Dual Hose

Recognized as Good Housekeeping’s 2025 Best Overall Portable Air Conditioner, the Whynter ARC-14SH combines 14,000 BTU cooling and heating for rooms up to 500 sq. ft. Its dual hose system improves efficiency and air flow.
The unit operates quietly at 51 dBA on low speed and uses an eco-friendly R-32 refrigerant. Feature highlights include a built-in dehumidifier with patented auto drain and a powerful 253 CFM airflow rate, making it suitable for humid climates and sensitive environments like bedrooms.
Midea 12,000 BTU Smart Inverter Air Conditioner Window Unit

The Midea 12,000 BTU inverter AC excels in energy efficiency and versatility, cooling rooms up to 550 sq. ft. It includes supplemental heat but note the heat pump function does not operate below 41°F outside.
With 5 modes (Heat, Auto, Cool, Dry, Fan), three-speed fan options, timer, and wireless smart controls via app or voice assistants, this Energy Star certified unit helps save up to 35% electricity. The washable front filter supports easy maintenance, ideal for home or office use.
Frigidaire 4-in-1 Smart Portable Room Air Conditioner with Heat

This Frigidaire unit offers 14,000 BTU cooling and 10,000 BTU heating for rooms up to 700 sq. ft. Its smart Wi-Fi connectivity enables control from anywhere via app or voice devices such as Alexa and Google Home.
Featuring auto swing louvers, three fan speeds, Sleep mode, and Dry mode, it maximizes air circulation while enhancing energy efficiency. Quiet operation and customizable comfort make it ideal for bedrooms and living rooms seeking versatile climate control.
Buying Guide for Room Air Conditioners with Heater
When choosing a room air conditioner and heater combo, consider these crucial factors to ensure you select a unit that meets your comfort needs and room specifications:
- BTU Capacity: Match the BTU rating to your room size. Larger rooms need higher BTU ratings. For example, 10,000 BTU suits up to 450 sq. ft., whereas 14,000 BTU can cover up to 700 sq. ft.
- Heating Capability: Check if the heater function is supplemental or full-range heat and its BTU output to confirm suitability for cold weather.
- Portability and Installation: Portable units offer flexibility and easy movement; window units require specific installation but can be more efficient.
- Energy Efficiency: Look for Energy Star certification or inverter technology to save on utility bills.
- Noise Level: Consider units with low decibel ratings (below 55 dBA) for bedrooms or quiet environments.
- Smart Features and Controls: Wi-Fi connectivity, remote control, and voice assistant compatibility increase convenience and customization.
- Additional Functions: Dehumidification and multiple operation modes (fan, dry, sleep) add versatility.
- Maintenance: Easy-to-clean filters and self-draining features reduce upkeep effort.
Carefully balancing these aspects will guide you to the best room air conditioner and heater for comfortable living year-round, tailored to your space, lifestyle, and climate.