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Air Conditioners Keystone

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Enhance your home comfort with Keystone's advanced through-the-wall air conditioner, delivering reliable cooling and supplemental heating capabilities with an 8,000 BTU cooling and 4,200 BTU heating capacity. This energy-efficient and quiet AC unit is perfect for spaces up to 350 square feet, offering superior dehumidification of up to 2.1 pints per hour for improved air quality. Designed for easy installation in homes, this modern unit includes a remote control for convenient temperature adjustments and features a built-in thermostat for precise control. With energy-saving modes and a programmable timer, this unit helps reduce electricity costs while maintaining optimal performance. Upgrade …
$519.99
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Experience unparalleled cooling comfort with Keystone's top-rated 12,000 BTU window and wall-mounted air conditioner, designed to cool rooms up to 550 square feet while efficiently dehumidifying up to 1.8 pints per hour. Utilizing innovative Inverter technology, this modern AC unit eliminates wasteful energy usage by precisely adjusting motor speed to match your desired room temperature, making it 27% more energy-efficient than standard models. Enjoy the peace and quiet with its whisper-quiet operation, and take control with the included remote, energy saver mode, sleep mode, and programmable timer. With easy installation and maintenance features like the Check Filter alert, Keystone offers …
Price from $429.99
Compare prices and buy Keystone 550 Sq. Ft 12,000 BTU Window Mounted Inverter - White KSTAW12INV
$430.00
$430.00
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 5,050 BTU window-mounted air conditioner can effectively cool rooms up to 150 square feet with dehumidification up to 1.4 pints per hour to remove moisture from the air. Perfect for small-sized living spaces like apartments, bedrooms, and much more. Mechanical rotary controls allow you to customize your cool. Slide out washable mesh filter makes it easy to remove and clean the filter when you need. Keystone not only provides a 1-year warranty but ensures that you stay cool and comfortable at a cost-conscious price.
Price from $159.99
Compare prices and buy Keystone 5,050 BTU Window Mounted - white KYST051AD
$160.00
$160.00
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,000 BTU window-mounted air conditioner can effectively cool rooms up to 350 square feet with dehumidification up to 1.1 pints per hour to remove moisture from the air. A 7,000 BTU heat pump is also included for those chilly days. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving features include energy saver mode,…
$507.99
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Stay cool and comfortable all summer long with Keystone's reliable air conditioning units. Our 14,000 BTU window AC unit is designed for easy installation through-the-wall, effortlessly cooling even the largest rooms up to 700 square feet. With a dehumidification function that removes up to 2.5 pints of moisture per hour, our energy efficient window AC unit creates a more pleasant and healthier indoor environment. Ideal for apartments and living rooms, this modern AC unit delivers optimal performance. Take control of your comfort with our window AC unit's unique remote control featuring a built-in thermostat that adjusts the temperature based on your position in the room. Save on energy costs …
$497.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 12,000 BTU ASHRAE/10,000 BTU DOE portable air conditioner can effectively cool rooms up to 450 square feet with dehumidification up to 1.9 pints per hour to remove moisture from the air. Perfect for medium-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. Money saving features include energy saver mode, sleep mode, and a programmable …
Price from $515.99 up to $579.99 
Compare prices and buy Keystone 12,000 BTU ASHRAE/10,000 BTU DOE Portable Inverter with Remote Control - White KSTAP10PINV
$516.00
$580.00
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The Keystone 12,000 BTU 230V through-the-wall air conditioner with Follow Me remote control is perfect for cooling a room up to 550 square feet. It has electronic controls with LED display and a temperature sensing LCD remote control allowing you to conveniently see, set and maintain the room temperature from across the room. Money saving features include energy saver mode, sleep mode and a programmable 24-hour timer. This unit is designed for through-the-wall installation and is not designed for standard window installation (WALL SLEEVE SOLD SEPARATELY). This unit also requires a special 230-volt/20-amp electrical outlet and will not operate with a standard 115V household electrical outlet.
$559.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,000 BTU window-mounted air conditioner can effectively cool rooms up to 350 square feet with dehumidification up to 1.2 pints per hour to remove moisture from the air. Perfect for medium-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving features …
$349.99
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Experience year-round comfort with Keystone's versatile heat/cool 115V window/wall-mounted air conditioner. Designed for easy installation in windows or walls, this unit offers both cooling and supplemental heating, perfect for large rooms up to 550 sq. ft. Enjoy energy-efficient operation with features like energy saver mode, sleep mode, and a programmable 24-hour timer. Stay in control with the included Follow Me LCD remote for effortless adjustments. With 12,000 BTUs of cooling power, exceptional quiet operation, and modern design, this air conditioner is the best choice for your home. Choose Keystone for the ultimate in comfort and convenience.
$389.99
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The Keystone 14,000 BTU 230V through-the-wall air conditioner with 10,600 BTU Supplemental Heat Capability is perfect for rooms up to 700 square feet. In addition to cooling, this versatile unit also offers supplemental heat capability, providing you with an additional heat source to your main heat source when outdoor temperatures are above 23 degrees Fahrenheit. It has electronic controls with LED display and a temperature sensing LCD remote control allowing you to conveniently see, set and maintain the room temperature from across the room. Money saving features include energy saver mode, sleep mode and a programmable 24-hour timer. This unit is designed for through-the-wall installation and …
$629.99
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Keep your home cool and comfortable with Keystone's best air conditioner - the 14,500 BTU window air conditioner built for large rooms. This energy-efficient window AC unit, designed for easy installation, offers quiet operation and comes with a remote control and timer for convenient use. Whether you need a window and wall-mounted AC unit for your home, dorm room, or apartment, this modern AC unit delivers the coldest, most reliable cooling experience. Enjoy personalized comfort with the built-in thermostat as you optimize energy usage with energy saver and sleep modes. Plus, the Check Filter alert and 1-year warranty ensure efficient airflow and long-term performance. Upgrade to Keystone for …
$399.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 14,000 BTU window-mounted air conditioner can effectively cool rooms up to 650 square feet with dehumidification up to 2.1 pints per hour to remove moisture from the air. Perfect for large-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving features …
$529.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 6,000 BTU window-mounted air conditioner can effectively cool rooms up to 250 square feet with dehumidification up to 1.4 pints per hour to remove moisture from the air. Perfect for small-sized living spaces like apartments, bedrooms, and much more. A remote is included so you can control your cooling from across the room. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. Keystone not only provides a 1-year warranty but ensures …
$189.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 12,000 BTU window-mounted air conditioner can effectively cool rooms up to 550 square feet with dehumidification up to 1.85 pints per hour to remove moisture from the air. Perfect for medium-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving …
$449.99
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Stay cool and comfortable in your home with the reliable Keystone window and wall-mounted air conditioner. This modern 12,000 BTU unit effectively cools rooms up to 550 square feet, while the 10,000 BTU heat pump provides additional warmth on chilly days. Utilizing innovative Inverter technology, it optimizes energy usage and operates 41% quieter than standard units. With a remote control, energy saver mode, sleep mode, and a programmable 24-hour timer, this air conditioner offers convenient and money-saving features. The Check Filter alert reminds you to maintain the washable filter for efficient operation. With a 1-year warranty, Keystone ensures you experience consistent cooling and heating …
$529.99
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Stay cool and comfortable with Keystone's top-rated portable AC unit. This windowless portable air conditioner boasts 13,000 BTU ASHRAE / 8,000 BTU DOE cooling power, perfect for spaces up to 450 square feet. Its dehumidification capability of 2.9 pints per hour ensures a cool and dry environment all day long. Plus, with 13,000 BTU ASHRAE / 8,000 BTU DOE of supplemental heating, this portable air conditioner is your go-to solution for both hot and cold days. Ideal for rooms such as apartments and bedrooms, this best portable air conditioner offers versatile cooling and heating options to keep you comfortable year-round. Easy to move with side handles and caster wheels, this portable AC unit …
$569.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 10,000 BTU window-mounted air conditioner can effectively cool rooms up to 450 square feet with dehumidification up to 1.5 pints per hour to remove moisture from the air. Perfect for medium-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving …
$399.99
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Stay comfortable and cool all summer long with Keystone's reliable air conditioning units. This window-mounted AC unit packs a powerful punch with 10,000 BTUs of cooling power and dehumidification up to 1.4 pints per hour, effectively cooling rooms up to 450 square feet. Ideal for medium-sized living spaces like bedrooms and apartments, this modern AC unit features inverter technology that eliminates unnecessary operation by managing motor speed for precise temperature control. This efficient unit is 20% more energy efficient than standard window units. Take control of your comfort with the included remote control and money-saving features like energy saver mode, sleep mode, and a programmable …
$399.99
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Keep your home cool and comfortable during the hottest summer days with the Keystone 12,000 BTU window and wall-mounted air conditioner, the best energy-efficient and quiet window AC unit for your home. With three fan speeds, the coldest AC unit allows you to customize your cooling preferences, while the 24-hour programmable timer lets you set it and forget it. Enjoy easy controls from the comfort of your couch with the Window AC with remote control. The easy install air conditioner is perfect for window air conditioner units for home, and the modern AC unit with a sleek design adds an extra level of style to your space. Designed for large room air conditioners of up to 550 sq. ft., this energy …
$429.99
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Stay cool and comfortable with Keystone's best-in-class 8,000 BTU inverter window air conditioner. This energy-efficient window AC unit is designed to cool rooms up to 350 square feet, with a dehumidification capacity of 1.2 pints per hour, making it ideal for apartments, bedrooms, and living rooms. Featuring innovative inverter technology, this modern AC unit operates 27% more efficiently than standard window units, providing you with cost-effective, quiet cooling. With a remote control for convenience, energy saver and sleep modes, and a programmable 24-hour timer, this unit offers personalized comfort and money-saving features. The Check Filter alert ensures easy maintenance, while Keystone's …
$345.99
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With reliable, window-mounted air conditioning, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,000 BTU window-mounted air conditioner can effectively cool rooms up to 350 square feet with dehumidification up to 2.1 pints per hour to remove moisture from the air. Perfect for smaller-sized living spaces like apartments, dorm rooms, sheds, and much more. The unit features a unique remote with a thermostat built in to sense the temperature of where you are in the room and adjusts as needed automatically. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. You'll know when it's time to easily remove and clean …
$262.99
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Upgrade your home with the Keystone 8,000 BTU window air conditioner, the best energy-efficient, quiet, and modern AC unit with remote control and timer for easy installation. This window and wall-mounted AC unit is perfect for large room air conditioners up to 350 sq. ft. Experience efficient cooling with 3 fan speeds, 4-way air direction control, and built-in dehumidification capabilities. Additionally, the coldest AC unit features a washable filter for healthy indoor air quality and an energy saver mode for cost-effective cooling solutions. Stay cool and comfortable in your home this summer with the Keystone window air conditioner.
$399.99
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With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 24,000 BTU window-mounted air conditioner can effectively cool rooms up to 1500 square feet with dehumidification up to 3.51 pints per hour to remove moisture from the air. Perfect for large-sized living spaces like apartments, bedrooms, living rooms, and much more. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving …
$699.99
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Elevate your home comfort with Keystone's innovative 230V window and wall-mounted air conditioner, designed to deliver optimal performance in large room settings. This sleek and energy-efficient unit features a versatile design that allows for easy installation in both windows and walls, accompanied by an adjustable window kit for seamless setup. With a cooling capacity of 12,000/11,600 BTUs and supplemental heating of 11,000 BTUs, this modern AC unit ensures your space remains at the desired temperature all year round. Experience the convenience of energy-saving modes, a 24-hour timer, and the user-friendly Follow Me LCD remote control for effortless operation. Transform your living space with …
$699.99
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