7 Best Window Air Conditioners and Heaters for Year-Round Comfort
You might think a window unit can’t handle both sweltering summers and freezing winters, but you’d be wrong. Modern combos use inverter technology and smart controls to do exactly that, saving energy year round. Let’s walk through seven top picks that deliver reliable cooling and heating, no matter the season.
| ROVSUN 11000 BTU Inverter Window AC with WiFi |  | Best Smart Pick | BTU Cooling Capacity: 11,000 BTU | Room Coverage: 350 sq. ft. | Wi-Fi/Smart Control: Yes, app + Alexa/Google Assistant | VIEW LATEST PRICE | Read Our Analysis |
| ROVSUN 12000 BTU Window AC Heater Combo |  | Best Value | BTU Cooling Capacity: 12,000 BTU | Room Coverage: 550 sq. ft. | Wi-Fi/Smart Control: Yes, app + Alexa/Google Assistant | VIEW LATEST PRICE | Read Our Analysis |
| LG 12,200 BTU Window AC with Heat and Remote 2 Speeds 208/230V White |  | Best For Large Rooms | BTU Cooling Capacity: 12,200 BTU | Room Coverage: 570 sq. ft. | Wi-Fi/Smart Control: No (remote only) | VIEW LATEST PRICE | Read Our Analysis |
| Midea 12,000 BTU Window Air Conditioner with Heat 550 Sq Ft |  | Most Energy Efficient | BTU Cooling Capacity: 12,000 BTU | Room Coverage: 550 sq. ft. | Wi-Fi/Smart Control: Yes, app + Alexa/Google Assistant | VIEW LATEST PRICE | Read Our Analysis |
| ROVSUN 8000 BTU Window Air Conditioner with Heat |  | Budget-Friendly Pick | BTU Cooling Capacity: 8,000 BTU | Room Coverage: 350 sq. ft. | Wi-Fi/Smart Control: No (remote only) | VIEW LATEST PRICE | Read Our Analysis |
| Bonnlo Wi-Fi 12000BTU Window AC with Heat |  | Best Tech Features | BTU Cooling Capacity: 12,000 BTU | Room Coverage: 550 sq. ft. | Wi-Fi/Smart Control: Yes, app + Alexa/Google Assistant | VIEW LATEST PRICE | Read Our Analysis |
| ROVSUN 8000 BTU Window AC with Heat | | Editor’s Choice | BTU Cooling Capacity: 8,000 BTU | Room Coverage: 350 sq. ft. | Wi-Fi/Smart Control: Yes, app + Alexa/Google Assistant | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
ROVSUN 11000 BTU Inverter Window AC with WiFi
You’ll save about 35% on energy thanks to its inverter tech and 13.2 CEER rating. Control it from anywhere via the WiFi app or just ask Alexa or Google Assistant. At only 40dB in sleep mode, it’s whisper-quiet. The 4 way swing directs airflow just where you want it. Installation fits windows 24.5–36 inches wide, with a 15.5 inch minimum height. Slide it in, attach the side panels, and you’re set for any season.
- BTU Cooling Capacity:11,000 BTU
- Room Coverage:350 sq. ft.
- Wi-Fi/Smart Control:Yes, app + Alexa/Google Assistant
- Modes/Functions:Cool, Heat, Fan, Dehumidifier, ECO
- Noise Level:40 dB (sleep mode)
- Window Width Compatibility:24.5–36 inches
- Additional Feature:Copper motor construction
- Additional Feature:4-way swing function
- Additional Feature:40dB sleep mode noise
ROVSUN 12000 BTU Window AC Heater Combo
If you want whole-home flexibility from a single window unit, the ROVSUN 12000 BTU combo is a solid value for medium to large rooms. It covers up to 550 square feet with five modes: heat, auto, cool, dry, and fan. You get three fan speeds and a swing button for adjustable louvers. Install it in windows 26 to 36 inches wide and 16 inches tall, following the clear instruction manual. Plus, Wi-Fi lets you control it via app or voice with Alexa and Google Assistant. Set a 24-hour timer, use ECO mode, and easily clean the washable filter. A one-year warranty backs it all.
- BTU Cooling Capacity:12,000 BTU
- Room Coverage:550 sq. ft.
- Wi-Fi/Smart Control:Yes, app + Alexa/Google Assistant
- Modes/Functions:Heat, Auto, Cool, Dry, Fan, ECO
- Noise Level:Not specified
- Window Width Compatibility:26–36 inches
- Additional Feature:5 operational modes
- Additional Feature:Adjustable swing louvers
- Additional Feature:Washable filter included
LG 12,200 BTU Window AC with Heat and Remote 2 Speeds 208/230V White
The LG 12,200 BTU model is your go to for large room comfort. It handles spaces up to 570 square feet, roughly 19 by 30 feet, with cooling and supplemental heat for those chilly days. You get two cooling speeds and two heating speeds plus a fan only mode, so you dial in exactly what you need. Noise dips to just 50dB on low, surprisingly quiet for such power. And the Auto Restart? It’s a lifesaver. After a power outage, the unit resumes its last settings automatically. No fuss. Just set it, forget it, and enjoy year round control with the included remote.
- BTU Cooling Capacity:12,200 BTU
- Room Coverage:570 sq. ft.
- Wi-Fi/Smart Control:No (remote only)
- Modes/Functions:Cool, Heat, Fan (2 speeds each)
- Noise Level:50 dB (low mode)
- Window Width Compatibility:Not specified
- Additional Feature:Auto Restart function
- Additional Feature:Supplemental heat feature
- Additional Feature:208/230V power required
Midea 12,000 BTU Window Air Conditioner with Heat 550 Sq Ft
This Midea 12,000 BTU model is the most energy efficient pick for anyone who wants to heat and cool a large room without blowing up their electric bill. It’s perfect for spaces up to 550 square feet, and the inverter technology is the real hero here. You’ll get up to 35% energy savings compared to conventional units, and with a CEER of 13.3, plus UL and Energy Star certifications, you can trust its efficiency. The unit runs as quietly as 45 dBA, making it a solid choice for your bedroom or home office.
Here’s what you’ll get with the control options:
- A digital LED display and remote control for easy adjustments.
- Smartphone or smartwatch control via the Midea SmartHome app.
- Voice commands with Alexa or Google Assistant.
And don’t worry about installation. You’ll need a double hung window that opens between 24 and 38.5 inches wide, with a minimum vertical opening of 14.5 inches. The unit itself is 19.41 inches wide, so measure carefully. It comes with an installation kit, making setup straightforward.
This Midea also handles the colder months, providing reliable supplemental heat down to 41°F. You’ll appreciate the five modes, three fan speeds, a 24-hour timer, and swing louvers for directing airflow. The washable front filter keeps maintenance simple. It’s a versatile, quiet, and efficient machine that truly covers you year-round.
- BTU Cooling Capacity:12,000 BTU
- Room Coverage:550 sq. ft.
- Wi-Fi/Smart Control:Yes, app + Alexa/Google Assistant
- Modes/Functions:5 modes, Eco, Dehumidifier
- Noise Level:45 dBA
- Window Width Compatibility:24–38.5 inches
- Additional Feature:Smartwatch control capability
- Additional Feature:Defrost control function
- Additional Feature:Auto shutoff feature
ROVSUN 8000 BTU Window Air Conditioner with Heat
Wondering who the ROVSUN 8000 BTU Window Air Conditioner with Heat is best for? You’re looking at a 4-in-1 unit that cools, heats, dehumidifies, and fans your space up to 350 square feet. Perfect for your home, office, or apartment, it works year-round in temperatures from 61°F to 88°F. You’ll love the easy LED display and remote control. Set a 24-hour timer, or switch to ECO mode for energy savings. Installation is straightforward with included side panels, but double-check your window size first. And at just 52 dB, it’s quiet enough for your bedroom or living area.
- BTU Cooling Capacity:8,000 BTU
- Room Coverage:350 sq. ft.
- Wi-Fi/Smart Control:No (remote only)
- Modes/Functions:Cool, Heat, Fan, Dehumidifier, ECO, Auto
- Noise Level:52 dB
- Window Width Compatibility:Not specified
- Additional Feature:LED digital display
- Additional Feature:61°F–88°F operating range
- Additional Feature:52dB quiet operation
Bonnlo Wi-Fi 12000BTU Window AC with Heat
For anyone who craves cutting edge tech features in a window unit, the Bonnlo Wi Fi 12000BTU Window AC with Heat brings smart home integration directly to your window frame.
You’ll get rapid 12,000 BTU cooling for rooms up to 550 sq. ft., plus 9,000-11,000 BTU heating, so it handles year-round climate shifts. Control it from your phone app or just tell Alexa or Google to adjust the temp.
Installation’s a breeze with the included kit, no pro help needed. It runs as quietly as 59dB, perfect for sleep or calls. Plus, the eco-friendly mode cycles the fan smartly, slashing energy waste and your bills.
- BTU Cooling Capacity:12,000 BTU
- Room Coverage:550 sq. ft.
- Wi-Fi/Smart Control:Yes, app + Alexa/Google Assistant
- Modes/Functions:Cool, Heat, ECO
- Noise Level:59 dB
- Window Width Compatibility:Not specified
- Additional Feature:9,000-11,000 BTU heating
- Additional Feature:Fan motor cycling before compressor
- Additional Feature:59dB quiet operation
ROVSUN 8000 BTU Window AC with Heat
Need a window unit that does double duty all year long? The ROVSUN 8000 BTU covers up to 350 square feet with 8000 BTU cooling and 4000 BTU heating. You get five modes (Heat, Auto, Cool, Dry, Fan), three fan speeds, plus a 24-hour timer and ECO mode. The washable filter keeps maintenance simple, while swing louvers direct airflow exactly where you need it. Wi-Fi control via app works with Alexa or Google Assistant, so you can set routines remotely. Installation fits windows 26 to 36 inches wide and 16 inches high, with all parts included. Backed by a one-year warranty, it’s a smart, connected pick.
- BTU Cooling Capacity:8,000 BTU
- Room Coverage:350 sq. ft.
- Wi-Fi/Smart Control:Yes, app + Alexa/Google Assistant
- Modes/Functions:Heat, Auto, Cool, Dry, Fan, ECO
- Noise Level:Not specified
- Window Width Compatibility:26–36 inches
- Additional Feature:4000 BTU heating capacity
- Additional Feature:5 operation modes
- Additional Feature:One-year warranty
Factors to Consider When Choosing an Air Conditioner and Heater for Window
Before you lock in your next unit, you’ll want to weigh a few key specs to avoid a costly mistake. Cooling capacity (measured in BTUs) must match your room size, while heating efficiency determines if it can truly replace your furnace. Don’t overlook energy savings from a high EER rating, noise levels for quiet operation, and whether smart control features fit your daily routine.
Cooling Capacity
One key factor you’ll need to nail down is cooling capacity, measured in BTUs, which tells you how much heat your unit can remove from a room per hour. Get this wrong, and you’ll either sweat through summer or pay for it on your electric bill. For rooms up to 350 sq. ft., an 8,000 to 12,000 BTU unit usually does the trick, depending on your insulation and sunlight. Larger spaces up to 600 sq. ft.? You’ll want 12,000 to 18,000 BTUs instead. Don’t overestimate capacity, though. Oversizing causes short cycling, wasting energy without cooling evenly. Undersizing leaves you with a lukewarm breeze. So match the BTUs to your room size for efficient operation and consistent comfort. A few minutes of measurement now saves you money later.
Heating Efficiency
Cooling capacity gets all the attention, but heating efficiency is where a window unit really earns its keep during the colder months. You’ll want a model with a high coefficient of performance (COP), which tells you how much heat you get per unit of electricity. The higher the COP, the less you’ll pay to stay warm. Inverter technology is your friend here; it adjusts the compressor’s speed to match your exact heating demand, so you’re not wasting energy. Don’t forget about your windows either. Proper insulation and a tight seal are non-negotiable. Even the best unit struggles if cold air sneaks in around the edges. Look for dual mode operation and a programmable thermostat too. These features let you maintain a steady temperature without constant manual adjustments, which keeps your home comfortable and your energy bills in check.
Energy Savings
When you’re shopping for a window unit that heats and cools, energy savings are where the smart money goes. Units with inverter technology can slash your power consumption by up to 35%. That’s not just a perk; it’s a game changer for your monthly bills. Aim for a CEER rating of 13.2 or higher to guarantee better energy performance. You’ll also want features like ECO modes and programmable timers, which cut unnecessary runtime during off peak hours. And don’t overlook Wi Fi connectivity. It lets you tweak settings from anywhere, so you’re never wasting energy on an empty room. Proper sizing matters too. An oversized unit cycles on and off too frequently, wasting electricity. Choose the right fit, and you’ll lock in lower costs without sacrificing comfort.
Noise Levels
Two key factors decide how much noise your unit will make: the decibel (dB) rating and the features built in to keep things quiet. Look for a dB rating around 40, which sounds like a whisper, perfect for your bedroom or a quiet workspace. Anything above 50dB? That’ll be noticeable and might disrupt your sleep or focus.
Thankfully, modern units pack noise reduction tech or ultra-quiet modes to dial down the hum. So, before you buy, check the product details for that specific noise level. It’s a simple step that saves you from a noisy headache later. You want comfort without the racket, right? And you can absolutely have it with the right pick. Just don’t settle for a roar when a whisper is waiting for you.
Smart Control
Since you’ll probably want to adjust the temperature without leaving your couch, smart control is where you should focus your attention. These Wi-Fi enabled units let you operate and monitor everything remotely from your smartphone, so you can tweak the fan speed or switch from cool to heat without getting up. Plus, they work with voice assistants like Alexa and Google Assistant. That means you can just say “Set the temperature to 72” for hands free commands.
But the real win is automation. You can schedule the unit to turn on right before you get home, or shut off when you leave, which slashes energy waste. And you won’t get blindsided by a breakdown; smart systems send real time alerts for filter changes or performance hiccups. That keeps your unit running smoothly all year without any surprise repairs.
