Keystone 12,000 BTU Window Mounted Inverter Air vs LG 12,200 BTU Window Air Conditioner with
Updated July 2026 — Keystone 12,000 BTU Window Mounted Inverter Air wins on sales rank and fan speeds, LG 12,200 BTU Window Air Conditioner with wins on price and cooling btus.
The LG 12 offers slightly better cooling capacity and additional heating features, making it a more versatile choice despite its higher price.
Why Keystone 12,000 BTU Window Mounted Inverter Air is better
Price
Keystone is $140 cheaper
Energy Efficiency
Inverter technology makes it more efficient
Convenience Features
Includes a clean filter alert
Why LG 12,200 BTU Window Air Conditioner with is better
Cooling Capacity
LG cools up to 570 sq. ft.
Noise Level
Operates as low as 50dB
Supplemental Heat
Offers heating for cooler days
Overall score
Specifications
| Spec | Keystone 12,000 BTU Window Mounted Inverter Air | LG 12,200 BTU Window Air Conditioner with |
|---|---|---|
| Energy Efficiency | 20% more efficient | Standard |
| Remote Control | Yes | Yes |
| Auto Restart | No | Yes |
| Programmable Timer | 24-hour | 24-hour |
| Heating Option | No | Yes |
Dimension comparison
Overview of the Products
When comparing the Keystone 12 and the LG 12, you'll notice key differences in cooling capacity, features, and price. The Keystone 12 is priced at $359.99, while the LG 12 is available for $499.99, making the Keystone about 28% cheaper. Both air conditioners are designed to cool medium-sized rooms, but their additional features set them apart significantly.
Cooling Power and Capacity
The Keystone 12 has a cooling power of 12,000 BTUs, making it suitable for rooms up to 550 square feet. In contrast, the LG 12 offers slightly more, with a cooling capacity of 12,200 BTUs, which can effectively cool spaces up to 570 square feet. This means that the LG unit can accommodate slightly larger rooms, which may be a deciding factor for those with bigger living spaces.
Energy Efficiency
Energy efficiency is a strong point for the Keystone 12, which utilizes inverter technology. This feature allows it to adjust the motor speed according to the cooling demand, making it around 20% more energy-efficient than standard units. Although the LG 12 does not mention inverter technology, it does operate at low sound levels and has a supplemental heat option, which adds versatility but may not be as energy-efficient in cooling mode.
Noise Levels
The LG 12 operates at a sound level as low as 50dB in low mode, ensuring a quieter environment while cooling or heating. The Keystone 12 does not specify noise levels, which could be a consideration for those sensitive to sound while trying to relax or sleep. If maintaining a low noise level is essential, the LG 12 may have the edge here.
Additional Features
The Keystone 12 includes several convenience features such as a remote control, Eco mode, sleep mode, and a 24-hour programmable timer. These options allow for a customized cooling experience. The LG 12 also includes a remote and features like auto restart after power failures and multiple fan speeds for both cooling and heating. While both units have their conveniences, the Keystone 12 offers a bit more in terms of customization.
Installation and Maintenance
Both air conditioners come with easy installation kits, ensuring a straightforward setup process. The Keystone 12 features a washable filter with a clean filter alert, promoting maintenance awareness. The LG 12 also includes a removable and washable filter, contributing to clean air circulation. However, the specific mention of a clean filter alert in the Keystone 12 may appeal to those looking for reminders to maintain their unit.
Price Comparison
The Keystone 12 is priced at $359.99, whereas the LG 12 comes in at $499.99. This price difference of $140 means the Keystone is approximately 28% more affordable. For budget-conscious consumers, this significant price gap may make the Keystone a more appealing choice without sacrificing essential cooling capabilities.
Sales Rank and Popularity
In terms of market performance, the Keystone 12 has a sales rank of 166,474, while the LG 12 sits at a better rank of 149,608. This suggests that the LG may be slightly more popular or has better visibility in the market. However, both ranks indicate that they are not top sellers, which could be a consideration for those looking for widely reviewed or highly rated products.
Which should you buy?
Deciding between the Keystone 12 and the LG 12 ultimately depends on your specific needs and priorities. If price and energy efficiency are your primary concerns, the Keystone 12 offers excellent value at $359.99 with its advanced inverter technology. However, if you prefer a unit that can cool a slightly larger space and offers supplemental heating, the LG 12, despite its higher price of $499.99, may be worth the investment. Each product has its strengths, making it essential to consider which features align best with your cooling and heating requirements.

