10 Best Window Units With Heat 2025 in the United States

The Midea MAW12HV1CWT is a versatile window air conditioner designed for year-round comfort, offering both cooling and heating functions. With a cooling capacity of 12,000 BTU, it is well-suited for large rooms up to 550 square feet. A notable strength of this unit is its energy efficiency, as it utilizes inverter technology that can save up to 35% on energy costs compared to standard models. The Energy Star certification further underscores its eco-friendly design.

Operating at a quiet level of just 45 dBA, this air conditioner is ideal for bedrooms, allowing for peaceful sleep or undisturbed work during the day. The electronic control panel, remote control, and compatibility with smart home systems like Alexa and Google Assistant make it user-friendly, allowing you to manage settings from anywhere.

However, there are some considerations to keep in mind. The heating function may not be effective if the outdoor temperature drops below 41°F. Additionally, while the installation is straightforward, it requires specific window dimensions, which could limit installation options for some users. The unit measures 19.41”W x 22.17”D x 13.9”H, so it's important to ensure your window can accommodate it.

In terms of maintenance, the washable filter is easy to access, promoting regular upkeep for optimal performance. Although the noise level is generally low, it can reach up to 58 dB under certain conditions, which might be noticeable in quieter settings.

The LG 18,000 BTU Heat and Cool Window Air Conditioner is a strong choice if you need a reliable unit for medium to large rooms, up to 1,000 square feet. Its 18,000 BTU cooling and heating capacity means it can keep sizable spaces comfortable through summer and winter, making it versatile for year-round use. The supplemental heating option adds real value for colder days, which not all window units provide. One of its standout features is the smart control capability—using LG ThinQ technology, you can adjust settings remotely via your phone or voice commands with Alexa and Google Assistant, which is convenient for modern living. It also has two fan speeds and a 24-hour timer to help customize comfort and energy use.

Noise-wise, it runs at 57 dB, which is moderately loud but typical for a unit this powerful; it might be noticeable in very quiet rooms. The size and weight are on the larger side, so ensure your window can accommodate its 30.5 x 25.5 x 16.84-inch frame and that installation is manageable for you. One drawback is its Energy Efficiency Ratio (SEER) of 11.1 and the absence of an Energy Star rating, meaning it might not be the most energy-saving option, which could affect your electricity bill over time. However, features like auto restart after power outages and a filter light reminder add to ease of use and maintenance.

If you want a smart, powerful window unit that heats and cools efficiently for medium to large rooms and don’t mind a slightly higher energy use, this LG model is worth considering.

The LG 7,600 BTU Window Air Conditioner with Heat is a solid choice for anyone needing both cooling and heating in a medium-sized room, around 320 to 330 square feet, such as a bedroom, living room, or small office. Its 7,500 BTU cooling power and supplemental heat function work well to maintain comfortable temperatures throughout the year. The unit offers two fan speeds for both heating and cooling, allowing some flexibility in airflow and temperature control. A notable plus is its relatively quiet operation at about 50-52 decibels, which means it won’t be too disruptive when sleeping or working nearby.

Energy efficiency is decent with a SEER rating of 11.3, so it should be reasonably cost-effective to run, although it doesn’t have a high star energy rating which might interest those focused on maximum savings. Installation is straightforward thanks to its slide in-out chassis and included kit, but keep in mind the unit is somewhat bulky (about 69 pounds and roughly 18 x 21 x 14 inches), so it requires a sturdy window and may be better suited for permanent or semi-permanent setups rather than frequent moves.

Extra features like a remote control, 24-hour timer, filter light reminder, and auto-restart after power outages add convenience and ease of use. The dehumidifier function is also useful for improving indoor comfort in humid conditions. The heating capacity is supplemental rather than a full heater replacement, so it’s best for mild to moderate cold days rather than very cold climates. This LG window unit with heat fits well for users looking for reliable, moderate heating and cooling in a medium-sized room, with quiet operation and user-friendly features. Those needing more powerful heating or extreme energy efficiency might want to explore other options.