AC Product Database

LG 24000 BTU Model

The LG 24K BTU window unit is first on my list of window ACs with heat pumps, and is my top choice for large, open areas. 

It's capable of heating and cooling areas measuring up to 1,440 square feet. I have installed this heat pump for massive rooms and even once for a loft apartment.

There's more to love than just the large coverage area, though. This LG sits stylishly in any window frame and is super easy to use, thanks to its electronic control panel.

You can even operate it from across the room with the included remote control.

In terms of features, this window air conditioner comes with it all, including 2 fan speeds for both cooling and heating, an automatic restart feature, and an easy-to-use window mounting kit.

It also features a dehumidifying function, a check-filter alert system, and a washable filter.

Aside from its heavy weight, my coworker and I had no trouble installing the LG and getting it up and running. The large dimensions require a big window and sturdy window sill.

Only try to install it on your own if you're Superman and can lift 145 pounds on your own. (What I'm saying is don't even attempt it.)

Compared to other the other window unit with similar specs on my list (such as the Koldfront WAC25001W), this LG model is a bit more affordable, offering more value for money.

If you don't need such a large heating device, consider one of the smaller options, like the 8K or 16K BTU models.

Related article: Top window air conditioners for large rooms

LG 7500 BTU model

If you don't need a massive window heating unit, the LG 24K BTU device above isn't the one for you.

Luckily, LG window air conditioners with heat cater to all room sizes, and the 7,500 BTU unit is a great AC choice for smaller rooms.

After using this in my 200-square-foot master bedroom during the winter season, I’ve found this unit to be efficient, effective, and easy to use.

It’s rated for rooms up to 320 square feet for cooling and 220 square feet for heating. I only used it to supplement my home furnace, and I think this is the ideal setup.

I especially love this LG’s smart technology. It’s built with patented LG ThinQ Technology, which lets me operate the device remotely from the LG app along with my other LG devices.

It even works with Alexa and Hey Google, so I can alter the room’s temperature through simple voice commands to my Google system.

Other features include a precise thermostat, remote control operation, 24-hour timer, change filter indicator, and energy saver mode to help with overall energy savings.

This one also comes with an auto restart function as well as a dehumidifying mode.

All in all, this is an excellent choice for heating an average-sized bedroom or office with a budget heat pump.

If you want to heat a space that's larger than 220 square feet, you'll have to consider a more powerful wall unit, like the LG LW2423HR.

Keystone 10000 BTU

I really like the Keystone 10K BTU model, but unlike the typical window units, this one is a through-the-wall option.

If you’ve got the wall space, it’s a great way to free up your windows while still getting solid heating and cooling.

With 10,000 BTUs of cooling, it’s perfect for mid-sized rooms—up to 450 square feet—and it does a great job keeping things comfortable year-round. It does push a little extra on the heat and goes up to 10,600 BTUs but this difference is basically irrelevant for most homeowners and I prefer to call it a 10k unit for heating and cooling.

The electronic control panel is easy to use, and I love that it comes with a remote control, so I don’t have to get up just to adjust the temperature.

It also has some nice extra features, like a dehumidifying mode, a programmable 24-hour timer, and an energy saver mode to help cut down on electricity use. The auto-restart function is a lifesaver after power outages, and the washable filter makes maintenance a breeze.

Now, installation is a different story. In my opinion, you shouldn't try this one on your own unless you have experience cutting through exterior walls.

If you’re not comfortable with that, I definitely recommend hiring a pro to get it installed properly. It’s a bit more work upfront, but once it’s in, you won’t have to mess with it.

One thing I really appreciate is the warranty. It covers parts and labor for the first year, and the sealed system (including the compressor) is covered for four years. 

That’s a much better deal than most units in this size range.

Compared to the LG LW2423HR, which is built for heating much larger spaces, this Keystone is a great choice if you want a more compact, space-saving solution without blocking your windows.

Related article: Through-the-wall air conditioning options

Koldfront WAC25001W 

If sheer power is your main concern when shopping around for heat pump units, look no further than the WAC25001W window air conditioner with heat from Koldfront.

This 25,000 BTU is nearly as powerful as a central air heating system, and it’s less than $900.

In terms of square footage, the cooling capacity of this Koldfront air conditioner is a whopping 1,500 square feet - that’s even higher than the LG LW2423HR.

Thanks to the integrated heat pump, you can expect to heat a room as large as 700 square feet.

The WAC25001W isn’t your basic air conditioner.

In addition to powerful yet efficient heating, this device is designed with three fan speeds, four operation modes, remote control operation, a 24-hour timer, washable filters, and moisture removal of up to 137 pints of water per day.

While this is the best window heat pump for anyone looking for a powerful heating element, it's not for everyone.

Because of its size and impressive supplemental heat capability, it's more expensive than my top choice, the LG LW2423HR, and the cost isn't necessary if you just need a small heat pump window unit.

Related article: How often heat pumps should cycle on and off

Midea EasyCool Smart Inverter

The Midea EasyCool Smart Inverter is one of the quietest window ACs I’ve ever used—it runs at just 43 decibels, which is barely a hum.

I had it installed in my office, and nobody on my Zoom calls ever noticed a thing. If you want an air conditioner that cools efficiently without the typical loud fan noise, this one is a great pick.

With 12,000 BTUs, it’s strong enough to cool spaces up to 550 square feet while using inverter technology to adjust power levels automatically, making it more energy-efficient than standard models. 

The smart features are another highlight—I love being able to control it with my phone, Alexa, or Google Assistant instead of hunting for the remote. The app is especially useful when I’m away from home and want to cool down my space before I get back.

Beyond that, it has a dehumidifying function, an eco mode for lower energy use, and an auto-restart feature for when the power goes out.

It can also maintain your preferred temperature within 1°F, keeping your space consistently comfortable. 

Installation was pretty simple, and it comes with brackets for added stability, which is a nice touch. Plus, the sleek design blends in better than some bulkier window units.

Compared to the Keystone 10K BTU model, which is a through-the-wall unit, the Midea offers more flexibility as a traditional window AC while also being much quieter. If you want smart controls and near-silent operation, this is a fantastic option.

How much does it cost to operate a window heat pump?

The cost to operate a window heat pump depends the size of the unit, the BTU rating, the heat setting you choose, and the specific model. Assuming the electricity rate is about $0.15 per kWh and you run the window AC with heat pump for 8 hours daily, a small unit will only set you back about $20 per month. A larger unit can cost as much as $90 per month.

How do window heat pumps work?

Window heat pumps work by drawing in air from the outside. This cool air passes through a coil and refrigerant to heat up, and the heated air is blown into the indoor space.

How can I tell if my window air conditioner has a heat pump?

There are a few ways to tell if your window air conditioner has a heat pump. You can find the serial number on the unit’s sticker and look it up online, or check the energy guide label to see if it has an official Heating Seasonal Performance Factor (HSPF). Another option is to check the unit for a heat pump reversing valve, which will be located on the condenser portion of the unit.

What is the most reliable heat pump brand?

There are tons of heat pump brands to choose from, but the most reliable devices come from reputable brands like LG, Koldfront, and Keystone.