KEYSTONE 12,000/11,600 Capability 12,000 230V Window Wall Air Conditioner with 11,000 BTU Supplement

Keystone Window Air Conditioner with Supplemental Capability Review


When temperatures rise, nothing beats the relief of a cool and comfortable home. With the Keystone Window Air Conditioner, you can stay cool no matter how hot it gets outside. This air conditioner has a 5,000 BTU cooling capacity with a supplemental 2,100 BTU heating capability, making it perfect for year-round use. In this review, we’ll take an in-depth look at this window air conditioner to see how it performs.

Design and Features

The Keystone Window Air Conditioner is designed to fit most standard windows and comes with an installation kit to make the process easy. It has a sleek and modern design with a white finish that blends seamlessly into any home decor. The control panel is located on the front of the unit and features an LED display that is easy to read.This air conditioner also has several features that make it convenient to use. It has a 24-hour timer, so you can set it to turn on or off at specific times. It also has an energy-saving mode, which helps to reduce your electricity bills. Additionally, it comes with an auto-restart function that remembers your settings in case of a power outage.


When it comes to performance, the Keystone Window Air Conditioner does not disappoint. It has a cooling capacity of 5,000 BTUs which is suitable for rooms up to 150 square feet. It also has a supplemental heating capability of 2,100 BTUs, making it perfect for use during the colder months.One of the standout features of this air conditioner is its quiet operation. It has a noise level of only 51 decibels, which is equivalent to the sound of a normal conversation. This makes it ideal for use in bedrooms or other quiet spaces.

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Energy Efficiency

The Keystone Window Air Conditioner is Energy Star certified, which means that it meets strict energy efficiency guidelines set by the U.S. Environmental Protection Agency. It has an Energy Efficiency Ratio (EER) of 11.2, which is above the minimum requirement for Energy Star certification. This makes it an energy-efficient option that will save you money on your utility bills.


Maintaining the Keystone Window Air Conditioner is easy. It has a removable and washable air filter that can be cleaned regularly to keep the unit running efficiently. The unit also has a filter indicator light that will remind you when it’s time to clean the filter.


– Energy Star certified- Supplemental heating capability- Quiet operation- Easy maintenance


– Suitable for small rooms only- Limited cooling capacity


Overall, the Keystone Window Air Conditioner is a great option for those looking for a cooling solution for small rooms. It has a supplemental heating capability that makes it versatile for year-round use. The unit is Energy Star certified, so you can be sure that it’s energy-efficient and will save you money on your utility bills. Its quiet operation and easy maintenance make it a convenient option for any home.

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