10 Best Heat And Cool Window Units 2025 in the United States

The Midea MAW12HV1CWT EasyCool Smart Inverter Air Conditioner is a versatile window unit that offers both cooling and heating, making it suitable for year-round comfort in spaces up to 550 square feet. One of its standout features is its energy efficiency; with a cooling capacity of 12,000 BTU and an EER of 13.3, it's designed to save on electricity bills, and the inverter technology helps maintain consistent temperatures while using less power.

Users will appreciate the quiet operation, with noise levels as low as 45 dBA, which is especially beneficial for bedrooms or workspaces. The unit's SmartHome capabilities allow for convenient control via a mobile app or voice assistants like Alexa and Google Assistant, adding to its user-friendly appeal. The remote control and multiple modes—cool, heat, dry, fan, and auto—give you flexibility in how you manage your indoor climate.

However, there are a few drawbacks to consider. The heat pump function is ineffective in temperatures below 41°F, which may limit its usefulness in colder climates. Additionally, the installation requirements specify compatibility with double-hung windows, which may not suit all users. While it is energy star certified, some users might find the cooling power insufficient for extremely hot days, especially in larger spaces, so it's important to assess your room size and climate needs.

The LG 18,000 BTU Heat and Cool Window Air Conditioner with WiFi Controls is a versatile unit designed for medium to large rooms up to 1,000 sq. ft. It offers both heating and cooling functions, making it suitable for year-round use. One of its standout features is the LG ThinQ technology, which allows you to control the unit remotely via your phone or through voice commands with Amazon Alexa and Google Assistant. This adds a layer of convenience, allowing you to adjust settings from anywhere.

The unit has customizable cooling and heating options with 2 speeds for both, along with a 24-hour timer to create a personalized schedule. Additionally, the auto restart feature ensures your comfort isn't disrupted by power outages, as the unit will resume operation automatically. Installation should be straightforward with the included window installation kit, and its dimensions are relatively standard for window units, though its weight (126.5 pounds) might require some assistance to install.

In terms of energy efficiency, the unit has an EER of 11.1, which is decent but not the highest in its class, and it does not have an Energy Star rating. Noise levels are rated at 57 dB, which is moderate; it may not be the quietest unit but is by no means excessively loud. Additional features include a remote control, filter light reminder, and dehumidifying function. This air conditioner is ideal for someone looking for a reliable, year-round heating and cooling solution with modern smart features.

The TCL 12,000 BTU Q-Series Smart Inverter Window AC is a solid choice for cooling and heating rooms up to about 550 square feet. Its 12,000 BTU capacity provides enough power for medium-sized spaces, and the inverter technology helps reduce energy use by up to 67%, making it more efficient than many older window units. However, its energy efficiency rating (SEER) is 14 with only a 1-star BEE rating, so while it saves energy, it’s not the most efficient model available. The noise level is fairly low at 48 decibels, which means it runs quietly enough for most home or office environments without being distracting.

Installation is straightforward using the included kit, but the unit is fairly large and heavy (around 93 pounds), so you might need help putting it in place. It features remote control and smart home compatibility, working with Alexa, Google Assistant, Apple Homekit, and Matter, which is great if you want to control your AC via phone or voice commands. The built-in heat pump adds useful heating capability, making it versatile for year-round comfort.

One downside is the warranty is limited to one year, which is shorter than some competitors offer. This unit is best suited for users who want a quiet, smart, and reasonably energy-saving window AC with heating, suitable for medium rooms, but who don’t mind a bit of extra weight and a modest energy star rating.