The catch
LG 14,000 BTU Dual Inverter Window Air Conditioner
It has no heat mode.
Side by side
LG LW1522IVSM vs Midea 12,000 Heat: LG has the higher cooling output, and Midea adds mild-weather heat in a lighter body
Quick verdict
LG is the cooling-only option with the higher capacity. Midea gives up some cooling capacity in return for mild-weather heat-pump operation, and it has a lighter body and a smaller minimum opening.
Before you buy
Why, and what it costs you
Heat for mild weather does not cover winter
With 35 F outdoors, neither unit fills the requested heat-pump role.
Where this comes from
LG only cools. Midea's manual begins the outdoor range for heating at 41 F, which puts 35 F under that boundary.
The catch
Midea 12,000 BTU Smart Inverter Window AC with Heat
Below its documented outdoor limit, heating shuts off.
LG 14,000 BTU Dual Inverter Window Air Conditioner
- Why pick it
- You need 14000 BTU of cooling and have no use for heat from the window unit.
- The 85 lb chassis fits both your window and your lifting plan.
- The catch
- It has no heat mode.
Midea 12,000 BTU Smart Inverter Window AC with Heat
- Why pick it
- Supplemental heat in mild shoulder-season weather is what you want.
- Your room suits a 12000 BTU cooling load and a lighter installation.
- The catch
- Below its documented outdoor limit, heating shuts off.
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What this page compares
LG's 14,000 BTU cooling unit and Midea's 12,000 BTU heat-pump window model are weighed here on seasonal use, mounting weight, window fit and heating limits.
LG is the cooling-only option with the higher capacity. Midea gives up some cooling capacity in return for mild-weather heat-pump operation, and it has a lighter body and a smaller minimum opening.
Which one fits
Pick the situations that sound like you
You need heat-pump heating with 50 F outdoors
LG has no heating mode, while 50 F is inside Midea's documented range.
- LG 14,000 BTU Dual Inverter Window Air Conditioner
- Not suitable
- Midea 12,000 BTU Smart Inverter Window AC with Heat
- Good
You need heat-pump heating with 35 F outdoors
35 F sits under Midea's stated 41 F lower heating limit.
- LG 14,000 BTU Dual Inverter Window Air Conditioner
- Not suitable
- Midea 12,000 BTU Smart Inverter Window AC with Heat
- Not suitable
The window opens to a height of 15 inches
Midea needs 14.5 inches, LG needs 16.
- LG 14,000 BTU Dual Inverter Window Air Conditioner
- Not suitable
- Midea 12,000 BTU Smart Inverter Window AC with Heat
- Better fit
The room needs cooling of at least 14000 BTU
Midea's rating is 12000 BTU.
- LG 14,000 BTU Dual Inverter Window Air Conditioner
- Better fit
- Midea 12,000 BTU Smart Inverter Window AC with Heat
- Not suitable
In practice
Differences you will notice
Heat for mild weather does not cover winter
With 35 F outdoors, neither unit fills the requested heat-pump role.
How we worked this out
LG only cools. Midea's manual begins the outdoor range for heating at 41 F, which puts 35 F under that boundary.
The lighter model weighs about 27 lb less
Midea is lighter by roughly 32 percent compared with the LG.
How we worked this out
85 - 57.98 = 27.02 lb. Divide by 85 and you get 31.8 percent. You may still need help installing it safely.
With a lower opening, the seasonal choice is no longer optional
Midea's stated minimum is cleared by a 15-inch opening, and LG is excluded.
How we worked this out
Minimum heights come to 14.5 and 16 inches. Width, sill geometry and mounting support also have to fit.
Plug in your numbers
Does either unit have the cooling and window fit you need?
This checks hard limits only. Personal preferences are left out of the math.
LG 14,000 BTU Dual Inverter Window Air Conditioner
Check this one yourself14,000 BTU on 115V. Fits window openings 27 to 39 inches wide and at least 16 inches tall. Your room works out to 8,000 BTU. It beats the target, but check yourself that it is not oversized.
Midea 12,000 BTU Smart Inverter Window AC with Heat
Check this one yourself12,000 BTU on 115V. Fits window openings 24 to 38.5 inches wide and at least 14.5 inches tall. Your room works out to 8,000 BTU. It beats the target, but check yourself that it is not oversized.
The cooling target uses the standard room-size method, adjusted for sun, extra people and kitchen heat. The window check uses the maker’s published limits.
Option A
LG, LW1522IVSM
14,000 BTU Dual Inverter Window Air Conditioner
This 115-volt dual-inverter window AC is made for larger rooms and has ThinQ remote control and a slide-out chassis. Be ready for a substantial 85-pound installation weight.
- Best for
- cooling a room on the larger side, about 700 square feet
Facts we checked
- Its CEER is 14.7 and its cooling capacity is 14000 BTU.
- The room guide from LG now says up to 700 square feet.
- The window needs to be 27 to 39 inches wide, with a minimum 16-inch opening height.
- Power is 115-volt, and the unit weighs 85 lb.
Option B
Midea, MAW12HV1CWT
12,000 BTU Smart Inverter Window AC with Heat
This 12,000 BTU inverter window unit comes with app control and supplemental heat that works in milder outdoor temperatures.
- Best for
- A bigger room that needs cooling in summer and heat in spring or fall
Facts we checked
- On the exact EnergyGuide, the listing is 12,000 BTU with a combined energy efficiency ratio of 13.3.
- The manufacturer gives a width of 19.41 inch, a depth of 22.17 inch, a height of 13.9 inch and a 57.98-pound weight.
- Per the manual, heating works outdoors from 41 to 75 F.
- Support covers local controls, a remote, the SmartHome app, Alexa and Google Assistant.
Spec by spec
Where they really differ
| Spec | LG 14,000 BTU Dual Inverter Window Air Conditioner | Midea 12,000 BTU Smart Inverter Window AC with Heat | In practice |
|---|---|---|---|
| Cooling capacity | 14000 BTU | 12000 BTU | Rated cooling on the LG is 2000 BTU higher. |
| Heat mode | No heat-pump function | Heat-pump operation within its outdoor-temperature range | Midea can fill a second seasonal purpose, but that stops below its specified limit. |
| Product weight | 85 lb | 57.98 lb | Before installation accessories, Midea weighs about 27 lb less. |
| Window width | 27 to 39 inches | 24 to 38.5 inches | Midea's minimum is narrower by three inches. |
| Minimum opening height | 16 inches | 14.5 inches | Midea suits a lower raised-sash opening. |
| CEER | 14.7 | 13.3 | The LG's published cooling-efficiency ratio is higher. Heating performance is another matter. |
Trade-offs
What each pick costs you
With LG 14,000 BTU Dual Inverter Window Air Conditioner
- 85 lb of body weight and larger window minimums.
With Midea 12,000 BTU Smart Inverter Window AC with Heat
- Cooling capacity and CEER are both lower than the LG's.
Change of plan
When the answer changes
Heat for the shoulder seasons turns into a required function
Go with Midea 12,000 BTU Smart Inverter Window AC with Heat. Within the manual's temperature range, Midea provides it.
The cooling load calls for 14000 BTU
Go with LG 14,000 BTU Dual Inverter Window Air Conditioner. LG has the rated cooling output that is required.
The unit has to be the main heat source below 41 F outdoors
Neither model fits. Pick a heater that is rated for your actual winter conditions.
Decision guide
How to decide
LG is the pick for higher-capacity cooling only. Midea is the pick if you will swap some cooling capacity for mild-weather heat-pump operation, and it brings a lighter body and a smaller minimum opening.
Which season matters most to you
LG is built for a larger cooling load. Midea can take the chill off a room as long as outside temperatures stay in its specified heating range, which can help before the main heating system is needed.
Plan separately for cold weather
The heating limit on the Midea is a genuine operating boundary. Don't count on it as primary heat in freezing weather, and don't leave a property depending on a feature that shuts down below its range.
Fit and lifting
The lighter Midea gets by with a smaller minimum opening. LG can handle the larger cooling requirement, but allow for its extra 27 lb and taller opening before you buy.
What this page can’t tell you
- This page makes no claim about heating cost or cold-climate performance. Rated cooling and CEER values do not show comfort in a room under equal conditions.
By the numbers
What the data shows
What we found across the window air conditioners we compare, plus the checked facts behind each finding.
How many fit
None of the 23 models checked meets all of “Provide a little warmth in spring and fall”, “Cool a room of around 550 square feet”, “Use a window with a low opening”, and “Put it in the window without as much strain”, so the pick goes to the closest practical compromise.
0 models fit, out of 23 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Provide a little warmth in spring and fall”, “Cool a room of around 550 square feet”, “Use a window with a low opening”, and “Put it in the window without as much strain”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| LG 14,000 BTU Dual Inverter Window Air Conditioner |
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| Midea 12,000 BTU Smart Inverter Window AC with Heat |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
LG 14,000 BTU Dual Inverter Window Air Conditioner
You need 14000 BTU of cooling and have no use for heat from the window unit.
See price & reviews on AmazonMidea 12,000 BTU Smart Inverter Window AC with Heat
Supplemental heat in mild shoulder-season weather is what you want.
See price & reviews on AmazonEach link opens in a new tab.
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