Finding the best single room air conditioner and heater is essential for maintaining comfort throughout the year. Whether you need cooling during scorching summers or heating in chilly winters, a versatile unit that delivers both functions can save space and money. Below is a summary table featuring top portable and window air conditioner and heater combos, perfect for single rooms of various sizes.
| Product | Cooling BTU | Heating BTU | Room Coverage | Type |
|---|---|---|---|---|
| BLACK+DECKER Smart Portable AC with Heat | 14,000 (ASHRAE) | 12,000 | Up to 700 sq. ft. | Portable |
| Whynter Portable AC 14,000 BTU & Heater | 14,000 | Yes (Dual Hose) | Up to 500 sq. ft. | Portable |
| SereneLife Small Portable AC 10,000 BTU | 10,000 | Yes | Up to 450 sq. ft. | Portable |
| Midea 12,000 BTU Smart Inverter Window AC with Heat | 12,000 | Yes | Up to 550 sq. ft. | Window |
| Aoxun 10,000 BTU Portable AC with Heat | 10,000 | Yes | Up to 268 sq. ft. | Portable |
BLACK+DECKER Smart Portable AC with Heating
This four-in-one portable unit by BLACK+DECKER offers 14,000 BTU cooling (ASHRAE standard) and 12,000 BTU heating, covering rooms up to 700 square feet. It also functions as a dehumidifier and fan, making it highly functional year-round. This unit is compact and portable, measuring 16.5” x 14.06” x 27.09”, with easy roll wheels for mobility.
Connect to Wi-Fi and control it remotely using the dedicated mobile app available for iOS and Android. It also supports voice control via Amazon Alexa and Google Assistant, offering smart convenience.
Whynter 14,000 BTU Portable AC & Heater Dual Hose
Recognized as the 2025 Good Housekeeping “Best Overall Portable Air Conditioner,” this Whynter model features powerful 14,000 BTU cooling and integrated heating. It is designed to cover rooms up to 500 sq. ft. while operating quietly at 51 dBA on low speed.
This model runs on eco-friendly R-32 refrigerant and is equipped with a dual-hose system and patented auto-drain function that efficiently expels condensate, supporting a 71 pint/day dehumidifier capacity. Its 430m³/h airflow provides effective climate control with minimal noise.
SereneLife Small Portable AC with Built-in Heater
Ideal for compact spaces, this 10,000 BTU portable air conditioner covers rooms up to 450 sq. ft. It supports cooling, heating, dehumidifying, and fan modes with an automatic swing vent for even air distribution.
Thanks to its lightweight design and rolling wheels, it is very portable. The included remote control enhances user convenience. Its built-in dehumidifier feature saves space and money by reducing humidity alongside temperature control.
Midea 12,000 BTU Smart Inverter Window AC & Heater
This Energy Star rated window unit efficiently cools up to 550 sq. ft. with 12,000 BTU and serves as supplemental heating during mild winters (note: heating function works only above 41°F outside temperature).
Equipped with a smart inverter for energy savings up to 35%, it operates quietly and features 5 modes: heat, auto, cool, dry, and fan with 3-speed settings. Control is easy via LED display, remote, app, or voice assistants Alexa and Google Assistant.
The washable front panel filter ensures low maintenance while preserving peak performance.
Aoxun 10,000 BTU Portable AC with Heat & Timer
The Aoxun model delivers 10,000 BTU cooling and heating in a 4-in-1 unit ideal for rooms up to 268 sq. ft. Its versatility covers cooling, heating, dehumidifying, and fan functions with a quiet night mode operating at ≤55dB.
Additional features include a 24-hour timer for scheduled operation and a child lock for safety. It is well-suited for home, dorm, or office environments where compact and silent performance is valued.
Buying Guide: Choosing the Right Single Room Air Conditioner with Heater
When selecting the best single room air conditioner and heater, consider the following factors to match your comfort needs precisely:
1. Cooling and Heating Capacity (BTU)
BTU ratings determine how efficiently your unit cools or heats a room. For rooms up to 300 sq. ft., 8,000–10,000 BTU units suffice; larger spaces up to 700 sq. ft. require units with 12,000 BTU or above. Choose a unit rated appropriately to your room size for balanced energy use and comfort.
2. Portable vs. Window Units
Portable ACs are flexible and easy to move between rooms but usually require venting via a window hose. Window units are permanently installed and often more energy-efficient for a dedicated room. Assess installation preferences and mobility needs.
3. Multi-Functional Features
Look for units offering 4-in-1 functions like cooling, heating, dehumidifying, and fan mode to get year-round use. Integrated dehumidifiers improve indoor air quality and reduce mold risk.
4. Noise Level
A quieter unit (below 55 dB) is vital for bedrooms or offices to maintain undisturbed sleep and focus. Portable units vary in noise; check decibel ratings before purchasing.
5. Smart Controls and Connectivity
Wi-Fi-enabled ACs provide remote control via smartphone apps or voice assistants like Alexa and Google Assistant. This feature adds convenience and scheduling capability.
6. Energy Efficiency
Energy Star-rated units and inverter technology save electricity and reduce bills. Variable speed compressors modulate power based on cooling demand for optimized consumption.
7. Installation and Portability
Consider window size compatibility and installation ease for window units. Portable units should have caster wheels and manageable weight for easy movement.
By evaluating these multiple perspectives, you can select a unit that effectively serves your single room cooling and heating needs throughout the year.