Yes—these window air conditioners provide both cooling and supplemental heating, ideal for small to large spaces. This guide highlights five top models that balance cooling power, energy efficiency, and smart control for year-round comfort. Best for varying room sizes, from apartments to large living areas, these units support energy savings with inverter tech, remote operation, and voice control compatibility. Read on to compare features, suitability, and practical buying tips.
Quick product snapshot
- Midea Inverter Window AC with Heat — Cools up to 550 sq ft; best for large rooms and smart control.
- Midea 8,000 BTU Smart Inverter Window Unit — Best for mid-sized rooms and energy savings.
- ROVSUN 8,000 BTU Window AC with Heat — Solid mid-range option with app/voice control.
- Keystone 23,200 BTU Window AC with 16,000 BTU heat — Best for large spaces up to 1,500 sq ft.
- Midea 12,000 BTU U Smart Inverter Window AC — Ultra-quiet, ideal for open-plan rooms up to 550 sq ft.
Midea Inverter Window Air Conditioner with Heat
Best for large rooms up to 550 sq ft. This 12,000 BTU unit combines cooling with dehumidification and reliable supplemental heat. It uses inverter technology for energy efficiency and offers smart control via the Midea SmartHome app, plus voice compatibility with Alexa and Google Assistant. A digital LED display, remote, 5 modes, 3 speeds, and a 24-hour timer support precise comfort. The outside temperature limit means heat may not operate below 41°F, which is important in colder climates.
- Best for: Large living rooms or open-plan spaces that need steady year-round comfort.
- Why selected: High cooling capacity with efficient heat support and smart control.
- Caution: Heat function may be unavailable in very cold conditions (below 41°F).
Midea 8,000 BTU Smart Inverter Window Unit With Heat
Best for mid-sized rooms up to 350 sq ft. This 8,000 BTU model provides both cooling and supplemental heating, with energy-saving inverter technology and Energy Star certification. Features include five modes (Heat, Auto, Cool, Dry, Fan), 3 speeds, a 24-hour timer, and wireless control via the SmartHome app, plus voice control with Alexa and Google Assistant. The unit is designed for quiet operation and easy front-panel filter access.
- Best for: Apartments or bedrooms where space and energy efficiency matter.
- Why selected: Energy-saving inverter tech and strong smart features in a compact unit.
- Caution: Heat function relies on outside temperatures above ~41°F.
ROVSUN 8,000 BTU Window Air Conditioner With Heat
Best for multi-season rooms up to 350 sq ft. This 8,000 BTU unit includes a 4,000 BTU heater, dehumidifier, and fan, offering a complete climate solution. It includes LED display, five modes, three speeds, a 24-hour timer, and ECO energy-saver. It supports app and voice control with Alexa/Google Assistant, enabling routines and remote adjustments. A straightforward installation and front-panel filter access support ongoing maintenance.
- Best for: Small living spaces needing both cooling and heating with smart control.
- Why selected: Comprehensive 4-in-1 capabilities in a single window unit.
- Caution: Heater capacity is supplemental, not a primary heat source in very cold weather.
Keystone 23,200 BTU Window AC With 16,000 BTU Supplemental Heat
Best for very large spaces up to 1,500 sq ft. This powerful window air conditioner offers extensive cooling capacity plus substantial supplemental heating. It functions well for open-plan living areas, retail spaces, or large apartments. It includes a smart remote with LCD temperature display and automatic signals for accurate climate management. The unit is designed as a comprehensive all-in-one cooling/heating solution with dehumidification and fan circulation.
- Best for: Large homes or zones needing robust year-round climate control.
- Why selected: Very high cooling capacity with meaningful supplemental heat and smart remote control.
- Caution: Higher power needs and more invasive installation due to size.
Midea 12,000 BTU U Shaped Smart Inverter Window AC
Best for open-plan rooms up to 550 sq ft. The U-shaped window design reduces outdoor noise and contributes to a quieter operation, paired with a highly efficient inverter system that delivers over 37% energy savings and ENERGY STAR certification. It is Wi-Fi enabled for remote control and supports voice commands via Alexa or Google Assistant. This model emphasizes ultra-quiet performance and flexible window installation.
- Best for: Noise-sensitive spaces seeking quiet operation and strong energy savings.
- Why selected: Ultra-quiet performance with substantial energy efficiency and smart control.
- Caution: Installation may require more precise window fitting due to the U-shaped design.
Buying Guide
What size should you choose? For spaces up to 350 sq ft, an 8,000 BTU unit is usually sufficient. For 350–550 sq ft, look at 12,000 BTU models, and for very large rooms up to 1,500 sq ft, consider 23,000 BTU units with robust supplemental heat. Consider heat capability in cold weather; many heat pumps and supplemental heaters require outdoor temperatures above a threshold to operate effectively.
Which features matter most?
- Inverter technology: Delivers continuous cooling/heating with energy savings and quieter operation.
- Smart control: App control, voice assistant compatibility, and scheduling.
- Noise level: Look for dBA ratings; U-shaped designs emphasize lower noise.
- Installation: Window height and width must accommodate the unit; some come with easy-install kits.
- Temperature range and defrost/auto modes: Affects performance in variable climates.
Choosing the right unit depends on room size, climate, and how you plan to manage comfort. If you need an all-in-one solution for a large living area, consider Keystone’s high-capacity model. For energy-conscious buyers in mid-sized spaces, the Midea 8,000 BTU or the Midea U Smart Inverter offer strong efficiency with smart features. For very quiet environments, prioritize the U-shaped design. For flexible, year-round control in multiple rooms, look for models with robust smart platforms and reliable heat function in mild outdoor temperatures.
Quick comparison
| Model | Best For | Room Size | Heat Capacity | Smart Features |
|---|---|---|---|---|
| Midea Inverter 12k | Large spaces | Up to 550 sq ft | Supplemental heat | App, Voice |
| Midea 8k Smart Inverter | Mid-sized rooms | Up to 350 sq ft | Supplemental heat | App, Voice |
| ROVSUN 8k with Heat | Balanced budget option | Up to 350 sq ft | 4,000 BTU heater | App, Voice |
| Keystone 23k/16k Heat | Very large spaces | Up to 1,500 sq ft | Supplemental heat | Remote, App |
| Midea U 12k | Quiet, open plans | Up to 550 sq ft | Supplemental heat | SmartHome, Voice |
FAQ
- Do these units provide primary heating? Answer: Most models provide supplemental heat, not primary heating, especially in very cold weather.
- Is inverter technology worth it? Answer: Yes, it typically offers faster cooling/heating with lower energy use and quieter operation.
- Can I control these from my phone? Answer: Most models listed support smartphone apps and voice assistants like Alexa or Google Assistant.
- Will heat work below 41°F? Answer: Some units specify a minimum outside temperature for heating; check the product notes.
- Are these units easy to install? Answer: Installation varies by window size; many include installation kits and adjustable panels.
- What room size is best for 12,000 BTU units? Answer: Typically suitable for up to about 550 sq ft, depending on climate and insulation.