Keystone - Summit 230V 400 Sq. Ft. 9,000 BTU Smart Mini Split Air Conditioner 10,000 BTU Heater 23 SEER2 - White
About this product
The Keystone Summit 9,000 BTU Mini Split AC and Heating System delivers efficient, year-round comfort for bedrooms, offices, additions, studios, and other spaces up to 400 sq. ft. This 230V Energy Star-certified ductless system includes indoor and outdoor units and requires professional installation to 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, making it ideal for bedrooms, nurseries, and home offices where quieter operation matters. Multiple comfort modes including Cool, Heat, Dry, Fan, Turbo, Sleep, and ECO allow for customized comfort throughout the day.
Recommended Room Size
400 square'Features
23 SEER2 Efficiency
The inverter-driven system delivers 9,000 BTU cooling and 10,000 BTU heating, adjusting output as conditions change to support steady, efficient comfort in spaces up to 400 sq ft.
Targeted Comfort for Small Spaces
Ideal for homeowners, property managers, and office managers seeking focused heating and cooling for small bedrooms, home offices, private offices, studies, and similar rooms.
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.
Cleaner Cooling
This advanced Summit series combines high efficiency with a more eco-conscious R454B refrigerant that reduces environmental impact and supports energy-efficient operation compared to many older refrigerant systems.
Specifications
- Recommended Room Size400 square feetBTU Cooling Rating9000 british thermal unitsNumber of Cool Settings5Number of Fan Speeds5Airflow Rate326 cubic feet per minuteRemote ControlYes
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The Keystone Summit 9,000 BTU Mini Split AC and Heating System delivers efficient, year-round comfort for bedrooms, offices, additions, studios, and other spaces up to 400 sq. ft. This 230V Energy Star-certified ductless system includes indoor and outdoor units and requires professional installation to 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, making it ideal for bedrooms, nurseries, and home offices where quieter operation matters. Multiple comfort modes including Cool, Heat, Dry, Fan, Turbo, Sleep, and ECO allow for customized comfort throughout the day.
Stay comfortable year-round with the DELLA 9000-24000 BTU mini split AC, featuring 22 SEER2 efficiency, inverter technology, and ultra-quiet performance. Soft, indirect airflow prevents harsh direct blowing for a more natural cooling experience. Control your system via WiFi app or Alexa/Google Home. Includes versatile modes, installation kit, and pre-charged refrigerant. Professional installation recommended.
Pre-charged with R32 refrigerant. Includes 16.4ft installation kit. Energy Star certified.Experience powerful, energy-efficient comfort with the DELLA Serena 9000 BTU Mini Split AC & Heat Pump. With 22 SEER2 performance, 1 ton capacity, and inverter technology, it cools and heats rooms up to 400 sq.ft. Smart features include WiFi & voice control via Alexa/Google and the DELLA app. PureClean tech keeps air fresh, while the bottom heater ensures reliable winter use.
The DELLA Mini Split is a high-efficiency SEER2 Energy Star heat pump. It features Hyper Heat technology down to -22°F, smart Alexa control, and whisper-quiet operation. With its award-winning 2025 Red Dot Design and a included 16.4ft install kit, this ductless system offers efficient, all-season comfort with indirect, soft airflow.
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