Keystone - Summit 115V 550 Sq. Ft. 12,000 BTU Smart Mini Split Air Conditioner 12,400 BTU Heater - White
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About this product
The Keystone Summit 12,000 BTU Mini Split AC and Heating System delivers efficient, year-round comfort for bedrooms, offices, additions, studios, and other spaces up to 550 sq. ft. This 115V Energy Star-certified ductless system includes indoor and outdoor units and is designed for professional installation to help ensure proper setup, optimized performance, and reliable long-term use. With up to 23 SEER2 efficiency, advanced R454B refrigerant, and inverter-driven technology, it continuously adjusts output to maintain a more consistent indoor temperature while reducing energy consumption compared to many traditional systems. Built for dependable operation in demanding climates, this mini split performs in outdoor temperatures ranging from 5°F to 131°F. The indoor unit operates as low as 30 dB on low fan. Multiple comfort modes including Cool, Heat, Dry, Fan, Turbo, Sleep, and ECO allow for customized comfort throughout the day. Wi-Fi, app control & smart home compatibility with smart home devices provide convenient remote access to temperature adjustments, scheduling, and energy-saving controls. Keystone customer service helps coordinate professional installation to save time & effort, while premium construction and an up to 7-year warranty support trusted, reliable performance.
23 SEER2 Efficiency
The inverter-driven system delivers 12,000 BTU cooling and 12,400 BTU heating, adjusting output as conditions change to support steady, efficient comfort in spaces up to 550 sq ft.
Targeted Comfort for Everyday Spaces
Ideal for homeowners, property managers, and office managers seeking focused heating and cooling for bedrooms, garages, sunrooms, home offices, and similar spaces.
Built for Changing Seasons
Designed to operate in outdoor temperatures from 5°F to 131°F, the system provides dependable heating and cooling through hot summers, cold weather, and transitional seasons.
Quiet for Sleep and Focus
The indoor unit runs at 30 dB on low fan speed, helping minimize disruption while sleeping, working, studying, joining calls, watching TV, or relaxing.
Control Comfort Your Way
Use the app or compatible voice control to adjust temperatures and schedules remotely. Choose Cool, Heat, Dry, Fan, Turbo, Sleep, or ECO mode to match daily comfort needs.Uses R454B refrigerant.
- Recommended Room Size550 square feetBTU Cooling Rating12000 british thermal unitsNumber of Cool Settings5Number of Fan Speeds5Airflow Rate500 cubic feet per minuteRemote ControlYes
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The Keystone Summit 12,000 BTU Mini Split AC and Heating System delivers efficient, year-round comfort for bedrooms, offices, additions, studios, and other spaces up to 550 sq. ft. This 115V Energy Star-certified ductless system includes indoor and outdoor units and is designed for professional installation to help ensure proper setup, optimized performance, and reliable long-term use. With up to 23 SEER2 efficiency, advanced R454B refrigerant, and inverter-driven technology, it continuously adjusts output to maintain a more consistent indoor temperature while reducing energy consumption compared to many traditional systems. Built for dependable operation in demanding climates, this mini split performs in outdoor temperatures ranging from 5°F to 131°F. The indoor unit operates as low as 30 dB on low fan. Multiple comfort modes including Cool, Heat, Dry, Fan, Turbo, Sleep, and ECO allow for customized comfort throughout the day. Wi-Fi, app control & smart home compatibility with smart home devices provide convenient remote access to temperature adjustments, scheduling, and energy-saving controls. Keystone customer service helps coordinate professional installation to save time & effort, while premium construction and an up to 7-year warranty support trusted, reliable performance.

The Keystone Core 9,000 BTU Mini Split AC and Heating System delivers quiet, energy-efficient comfort for bedrooms, offices, and other spaces up to 400 sq. ft. This 230V Energy Star-certified ductless system includes indoor and outdoor units and is designed for professional installation to help ensure proper setup, optimized performance, and reliable long-term use. With up to 21 SEER2 efficiency, advanced inverter technology, and an optimized R32 refrigerant system, it continuously adjusts output to help reduce energy use while maintaining steady indoor comfort without bulky ductwork. Built for dependable year-round performance, this mini split operates in outdoor temperatures ranging from 5°F to 127°F for reliable comfort through changing seasons. Indoor sound levels as low as 28 dB make this Core system quieter than a whisper. Multiple modes including Cool, Heat, Dry, Fan, Turbo, Sleep, and ECO allow for customized comfort throughout the day. Wi-Fi, app control, and smart home compatibility with smart home devices provide convenient remote access. Keystone customer service helps coordinate professional installation to save time and effort, while durable construction and an up to 7-year warranty support trusted, reliable performance.

Keystone offers reliable air conditioning units that deliver consistent cooling, ensuring your comfort even on the hottest days. Designed for easy through-the-wall installation, this 12,000 BTU through-the-wall air conditioner effectively cools rooms up to 550 square feet, while its dehumidification function removes up to 2.5 pints of moisture per hour, reducing humidity levels for a more comfortable living environment. Ideal for medium-sized living spaces like apartments and living rooms, this unit comes with a unique remote control featuring a built-in thermostat. This innovative feature detects your position in the room and adjusts the temperature accordingly, promoting personalized comfort. Save energy and cut down on costs with the unit's energy saver mode, sleep mode, and programmable 24-hour timer. The Check Filter alert will notify you when it's time to clean the mesh filter, ensuring optimal performance. Rest assured that Keystone stands by the quality of their product with a 1-year warranty, offering peace of mind and reliable cooling at an affordable price. Stay cool and comfortable with Keystone's air conditioning units.

Efficiently heat or cool your space with this mini split air conditioner. This pre-charged air conditioner unit is designed with a ductless mini split inverter plus system with a heat pump and dehumidification. The device can easily be controlled and adjusted from the remote control or from the DELLA app. The package includes all of the necessities for an easy installation experience.
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