Main trade-off
LG 14,000 BTU Dual Inverter Window Air Conditioner
No heating mode.
Head-to-head
LG LW1522IVSM vs Midea 12,000 Heat: LG raises cooling output, Midea adds mild-weather heat in a lighter body
The short answer
LG is the higher-capacity cooling-only choice. Midea trades some cooling capacity for heat-pump operation in mild weather, with a lighter body and a smaller minimum opening.
Before you choose
The reasoning and the trade-offs
Mild-weather heat is not winter coverage
At 35 F outdoors, neither unit supplies the requested heat-pump role.
What this is based on
LG is cooling-only. Midea's manual starts the heating outdoor range at 41 F, so 35 F is below that boundary.
Main trade-off
Midea 12,000 BTU Smart Inverter Window AC with Heat
Heating shuts down below its documented outdoor limit.
LG 14,000 BTU Dual Inverter Window Air Conditioner
- Choose it for
- You need 14000 BTU cooling and do not need heat from the window unit.
- Your window and lifting plan accommodate the 85 lb chassis.
- Main trade-off
- No heating mode.
Midea 12,000 BTU Smart Inverter Window AC with Heat
- Choose it for
- You want supplemental heating during mild shoulder-season weather.
- A 12000 BTU cooling load and lighter installation fit your room.
- Main trade-off
- Heating shuts down below its documented outdoor limit.
About this comparison
Compare LG's 14,000 BTU cooling unit with Midea's 12,000 BTU heat-pump window model for seasonal use, mounting weight, window fit and heating limits.
LG is the higher-capacity cooling-only choice. Midea trades some cooling capacity for heat-pump operation in mild weather, with a lighter body and a smaller minimum opening.
Winner by situation
Start with what you need it to do
Heat-pump heating is needed at 50 F outdoors
Midea's documented range includes 50 F. LG has no heating mode.
- LG 14,000 BTU Dual Inverter Window Air Conditioner
- Not suitable
- Midea 12,000 BTU Smart Inverter Window AC with Heat
- Good
Heat-pump heating is needed at 35 F outdoors
35 F is below 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 opening is 15 inches high
Midea requires 14.5 inches while LG requires 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 requires at least 14000 BTU cooling
Midea is rated at 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
What matters in practice
The differences that matter
Mild-weather heat is not winter coverage
At 35 F outdoors, neither unit supplies the requested heat-pump role.
How we reached this conclusion
LG is cooling-only. Midea's manual starts the heating outdoor range at 41 F, so 35 F is below that boundary.
The lighter model saves about 27 lb
Midea weighs roughly 32 percent less than the LG.
How we reached this conclusion
85 - 57.98 = 27.02 lb. Dividing by 85 gives 31.8 percent. Safe installation help may still be necessary.
A lower opening can make the seasonal choice mandatory
A 15-inch opening clears Midea's stated minimum but excludes LG.
How we reached this conclusion
The minimum heights are 14.5 and 16 inches. Width, sill geometry and mounting support must also fit.
Try your real numbers
Will either unit cool the room and fit the window?
The result checks hard limits only. Preferences stay out of the calculation.
LG 14,000 BTU Dual Inverter Window Air Conditioner
Needs a manual check14,000 BTU at 115V with a 27 to 39-inch width range and 16-inch minimum opening height. Your calculated target is 8,000 BTU. It clears the target, but oversizing still needs a manual check.
Midea 12,000 BTU Smart Inverter Window AC with Heat
Needs a manual check12,000 BTU at 115V with a 24 to 38.5-inch width range and 14.5-inch minimum opening height. Your calculated target is 8,000 BTU. It clears the target, but oversizing still needs a manual check.
Cooling follows the current room-size method with adjustments for sun, extra people and kitchen heat. The opening check uses the stored manufacturer limits.
Choice A
LG, LW1522IVSM
14,000 BTU Dual Inverter Window Air Conditioner
A 115-volt dual-inverter window AC for larger rooms, with ThinQ remote control, a slide-out chassis and a substantial 85-pound installation weight.
- Best matched use
- cooling a larger room around 700 square feet
Checked facts
- Cooling capacity is 14000 BTU with a CEER of 14.7.
- LG's current room guide is up to 700 square feet.
- Window width must be 27 to 39 inches with a minimum 16-inch opening height.
- The unit weighs 85 lb and uses 115-volt power.
Choice B
Midea, MAW12HV1CWT
12,000 BTU Smart Inverter Window AC with Heat
A 12,000 BTU inverter window unit with app control and supplemental heat for milder outdoor temperatures.
- Best matched use
- A larger room needing summer cooling and spring or fall heat
Checked facts
- The exact EnergyGuide lists 12,000 BTU and a 13.3 combined energy efficiency ratio.
- The manufacturer lists a 19.41 inch width, 22.17 inch depth, 13.9 inch height and 57.98-pound weight.
- The manual specifies an outdoor heating range of 41 to 75 F.
- Local controls, a remote, SmartHome app, Alexa and Google Assistant are supported.
Meaningful differences
What changes the fit
| What changes | LG 14,000 BTU Dual Inverter Window Air Conditioner | Midea 12,000 BTU Smart Inverter Window AC with Heat | Why it matters |
|---|---|---|---|
| Cooling capacity | 14000 BTU | 12000 BTU | The LG provides 2000 BTU more rated cooling. |
| Heat mode | No heat-pump function | Heat-pump operation within its outdoor-temperature range | Midea can serve a second seasonal purpose, but not below its specified limit. |
| Product weight | 85 lb | 57.98 lb | Midea is about 27 lb lighter before installation accessories. |
| Window width | 27 to 39 inches | 24 to 38.5 inches | Midea's minimum is three inches narrower. |
| Minimum opening height | 16 inches | 14.5 inches | Midea can fit a lower raised-sash opening. |
| CEER | 14.7 | 13.3 | The LG has the higher published cooling-efficiency ratio. Heating performance is a separate question. |
What you give up
Every choice has a cost
If you choose LG 14,000 BTU Dual Inverter Window Air Conditioner
- 85 lb body and larger window minimums.
If you choose Midea 12,000 BTU Smart Inverter Window AC with Heat
- Lower cooling capacity and CEER than the LG.
Recommendation switch
The decision flips if...
Shoulder-season heat becomes a required function
Choose Midea 12,000 BTU Smart Inverter Window AC with Heat. Midea supplies it within the manual's temperature range.
The cooling load needs 14000 BTU
Choose LG 14,000 BTU Dual Inverter Window Air Conditioner. LG has the required rated cooling output.
The unit must provide primary heat below 41 F outdoors
Choose neither. Choose a heater rated for the actual winter conditions.
What matters in practice
How to make the call
Choose the season you need covered
LG concentrates on a larger cooling load. Midea can take the chill off a room when outside temperatures remain in its specified heating range, which can be useful before a main heating system is needed.
Keep a separate cold-weather plan
Midea's heating limit is a real operating boundary. Do not depend on it for primary heat through freezing weather or leave a property relying on a feature that shuts down below its range.
Fit and handling
The lighter Midea uses a smaller minimum opening. LG can serve the larger cooling requirement, but the added 27 lb and taller opening should be accounted for before purchase.
What this comparison cannot tell you
- No heating-cost or cold-climate performance claim is made. Rated cooling and CEER values do not establish equal-condition room comfort.
What the facts say
What the comparison shows
Useful conclusions from the current window air conditioners comparison, followed by the checked facts used to reach them.
Compared set
None of the 23 models checked covers every part of “Add light heat in spring and fall”, “Cool a room around 550 square feet”, “Fit a low window opening”, and “Lift it into the window with less strain”, so the recommendation favors the closest practical compromise.
0 matching models from 23 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “Add light heat in spring and fall”, “Cool a room around 550 square feet”, “Fit a low window opening”, and “Lift it into the window with less strain”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| LG 14,000 BTU Dual Inverter Window Air Conditioner |
|
| |
| Midea 12,000 BTU Smart Inverter Window AC with Heat |
|
|
|
Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
LG 14,000 BTU Dual Inverter Window Air Conditioner
You need 14000 BTU cooling and do not need heat from the window unit.
See price & reviews on AmazonMidea 12,000 BTU Smart Inverter Window AC with Heat
You want supplemental heating during mild shoulder-season weather.
See price & reviews on AmazonLinks open in a new tab.