8 Best Window Units With Heat 2025 in the United States

The LG 23,000 BTU Window Air Conditioner with Heat is a powerful unit designed to serve large rooms up to 1,400 square feet, making it suitable for living rooms, dens, bedrooms, or offices. It offers both cooling and heating functions, making it versatile for year-round use. With a high cooling power of 23,000 BTU, it can efficiently cool large spaces. The heating capacity is an added bonus for cooler days, providing supplemental heat to maintain a comfortable temperature indoors.

Its Energy Efficiency Ratio (EER) is 11.3, which is decent but not the best in its class, and it is not Energy Star rated, meaning it might not be the most energy-efficient option available. However, it operates at a relatively low noise level of 50-51 dB, ensuring minimal disturbance during operation. The unit also features multiple fan speeds for customizable airflow, a remote control for convenience, and an Auto Restart function, which is handy in the event of power outages.

Installation might be a bit cumbersome due to its large size and weight (145 pounds), so assistance may be needed. Additional features include a filter light reminder, dehumidifier function, and a 1-year parts and labor warranty. This window unit is ideal for those who need a robust and versatile cooling and heating solution for larger rooms, but it might not be the best choice for energy-conscious buyers.

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.