Best Window Air Conditioners with Heat (2026)

LG sells this as an AC and heater combination for a bedroom or living room of about 330 square feet, with supplemental heat for cooler days, two speeds each for cooling, heating and fan, and a remote. It runs on a standard 115V circuit, which is the single most useful fact on the page, because the larger heat units need a different outlet.

The heat is described as supplemental, and that is how to think of it. It will take the chill off a bedroom in spring or autumn, but it will not heat a room in a cold winter. Against the Midea inverter it uses a conventional fixed-speed compressor, so the cooling side is less steady, and against the Soleus it lacks the outside compressor layout and the quiet figure.

Ownership is simple: a washable filter and a spring coil clean. If you leave the unit installed over winter, seal the cabinet edges and cover the outside, because an unsealed unit leaks more cold air than the heater adds. Because the heat is supplemental, pair it with a thermostat-controlled setting rather than running it all night, which wastes power for little gain.

The Midea combines an inverter compressor with heat, dehumidify, auto, cool and fan modes in one 350 square foot unit. The inverter varies compressor speed, which reduces cycling and thump, while the heat mode gives you warmth in the shoulder seasons.

It is the least expensive way to get both a modulating compressor and heat. Compared with the LG 7,600 BTU it covers slightly more area and runs steadier, but the inverter board is a costlier part to replace. It does not state a heating capacity in the data, so judge the heat as a convenience, not a heater.

Ownership includes the filter and coil routine and a decision about winter. If the unit stays in the window, foam the edges and cover the outside, and use the timer so it does not run in an empty room. Resist the urge to leave it on heat mode with the window cabinet unsealed, since the leak around the sash costs more than the heater supplies.

The Soleus is the only unit here that states a heating capacity, 10,000 BTU, alongside 12,000 BTU of cooling on a 115V supply. It straddles the wall, so the noisy parts sit outside, and the listing quotes about 38 dB, similar to a library.

That 10,000 BTU of heat is the number to compare with a space heater: a 1,500 watt plug-in heater produces roughly 5,100 BTU per hour, so the Soleus has real heating output, though a 115V circuit cannot carry that load alongside much else. The tradeoffs are the install, which needs a wall opening rather than a standard sash, and the price, which is higher than the LG or the Midea.

Ownership requires planning the wall opening, sealing and the weight of the outdoor section. Run it on a dedicated circuit, because the heater draws steady current.

This LG is the large-room version, rated at 18,000 BTU for up to 1,000 square feet with supplemental heat, two speeds in each mode, a digital control panel and a remote. It runs on 230/208V, which means a dedicated two-pole circuit with the correct plug and breaker.

That voltage requirement is the decisive fact. Few bedrooms have a 230V outlet by the window, so the unit suits a garage, basement, shop or an addition where one was wired in. In return you get cooling and heating capacity that no 115V unit here matches, with LG's wide service network behind it.

Ownership includes a very heavy lift, a sturdy bracket and the usual filter and coil routine. Have an electrician confirm the circuit before you buy, since a wrong plug type is the commonest reason these units are returned.

This unbranded-style 18,000 BTU combo offers cooling, heating, dehumidification and fan modes, with control by app, remote, panel or voice command and five operation modes in total. The data does not give a brand name, a voltage or a heating capacity, so confirm those on the listing before you buy.

Its selling point is the feature list: app and voice control on a large unit at a lower price tier than the LG 18,000 BTU. Its risk is support. Without a recognizable service network, a failed board or compressor becomes the seller's problem, and the data does not state a warranty.

Ownership is the usual filter and coil routine. At this size, check the electrical requirements on the nameplate and confirm the plug type, because many 18,000 BTU units require 230V. Ask the seller for the model number and warranty terms in writing before you order, because the listing data is thin on both.

The Seasons is the largest unit in the lineup at 23,200 BTU, with heat, three fan speeds, three cooling modes, auto-restart, a programmable 24-hour timer, an energy-saver mode and a sleep mode. It requires a 230/208V supply.

At this size it is a shop, garage, large basement or commercial-style space unit, not a bedroom unit. Compared with the LG 18,000 BTU it adds more than 5,000 BTU of capacity, but a window cabinet this large is a serious weight and needs proper support. Cycles are long and the current draw is high.

Ownership requires an electrician for the circuit, a heavy-duty bracket and filter and coil care. Auto-restart is useful after a power cut, and the timer helps avoid running an empty space.