The Hidden Challenge of Open Floor Plans (and the Cooling Fix You Haven’t Considered)

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Supported by Gree’s global HVAC engineering and manufacturing expertise, Tosot systems are designed to bring quieter, more balanced comfort to modern living spaces.

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Open floor plans are highly sought after for creating a sense of spaciousness and flow by removing interior walls that otherwise would segment a house. Plans often combine the kitchen, dining room, and family room into one cohesive space. This beloved layout fosters a more social environment, allowing someone in the kitchen to remain part of the conversation in the family room. Additionally, the setup maximizes natural light, helping even smaller homes feel bright and connected to the outdoors. 

But an often overlooked issue with open floor plan homes is how to cool such large spaces consistently and efficiently. The vast living space is more difficult for your HVAC system to maintain consistent temperatures in, which can lead to hot or cold spots. As a result, the systems need to run longer or work harder, especially during extreme weather conditions, which requires more energy. Unfortunately, this can ultimately result in higher utility bills. 

Open floor plans also can feature expansive windows to maximize natural light, but without proper shading, tinting, or glazing, the glass can let in excessive heat during the summer months, increasing cooling demands. Kitchen activities like cooking release heat, which can raise indoor temperatures throughout the first floor. Finally, high ceilings, which are common in open floor plans, make cooling the room more challenging.

Fortunately, there are effective solutions to cool an open living space to ensure you stay comfortable. Tosot’s modern heat pump systems are designed specifically for large spaces like open floor plan homes. Here are the key attributes of Tosot’s heat pump cooling units that make them suitable for these expansive areas. 

High Efficiency

Investing in high-efficiency HVAC equipment can offset the increased energy demands required for an open floor plan. Tosot’s Multi-Zone Mini-Split System and Unitary Ducted Central Heat Pump System are both Energy Star certified, highlighting their ability to perform as efficiently as possible. With a rating of 18.5 SEER (Seasonal Energy Efficiency Ratio) and 10.5 HSPF2 (Heating Seasonal Performance Factor), the Unitary Ducted Central Heat Pump System well surpasses the industry average. 

The heat pump contains a brushless DC inverter compressor with a motor boasting 30 percent higher efficiency than traditional asynchronous motors, resulting in smoother start-up and operation. By choosing one of these units, you can ensure that your home feels more refreshing for longer while also saving on energy bills. 

Optimal Comfort

Even temperatures result from air that can travel easily throughout a space, not from a compressor that cycles on and off quickly. In an open floor plan, airflow is critical to achieving maximum comfort. Tosot offers multiple solutions tailored to different home layouts and cooling challenges.

• Concealed Ducted Unit: For large homes with soaring ceilings, lengthy duct runs, or complex floor plans with multiple room transitions, the Concealed Ducted Unit is engineered to maintain steady airflow throughout the entire living area. It features quiet operation, hidden installation, and central-air appearance. With adjustable external static pressure up to 1.106 inches water column (in. WC), or about 275 Pascals (Pa), it is powerful enough to push conditioned air through extensive ductwork with multiple branches and bends. This makes it especially effective in open-concept homes where consistent airflow between connected kitchen, dining, and living spaces can otherwise be difficult to achieve.
• 8-Way Ceiling Cassette: In expansive gathering areas where airflow coverage is essential, such as a combined great room and kitchen with large windows and high ceilings, the 8-Way Ceiling Cassette delivers balanced comfort from every direction, all while keeping out of sight behind a small panel after installation. Its 8-way air outlets, wide-angle deflectors, and corner vents create 360-degree airflow distribution reaching up to 1,071 cubic feet per minute (CFM), while the 7-speed fan control allows homeowners to fine-tune comfort levels based on occupancy, cooking activity, or sun exposure throughout the day.
• Multi-Zone Mini-Split System: For homeowners looking to independently control temperatures across multiple areas of an open-concept home, the Multi-Zone Mini-Split System provides flexible zoning with individualized comfort settings for different rooms or sections of the house—all powered by a single outdoor unit. This setup helps eliminate hot and cold spots while reducing unnecessary energy use in unoccupied spaces. Engineered for performance in extreme climates, the system delivers cooling in outdoor temperatures up to 118 degrees Fahrenheit and reliable heating down to -22 degrees Fahrenheit. With extended piping capabilities for large homes, it is particularly well suited for sprawling layouts where maintaining consistent comfort across long distances can be challenging.
• Unitary Ducted Central Heat Pump System: For homeowners seeking whole-home comfort with the familiarity of a traditional ducted system, the Unitary Ducted Central Heat Pump System adapts output automatically based on changing conditions inside the home. Its two-stage compressor, vapor injection technology, and adjustable-speed operation allow it to precisely match heating and cooling demand instead of constantly cycling on and off. This makes it ideal for open floor plans where temperatures can fluctuate throughout the day due to sunlight, cooking heat, or changing occupancy levels, helping maintain a more even and energy-efficient indoor environment year-round.
• Floor Standing AC: In open-concept homes where ceiling space is limited or installing ductwork is impractical, the Floor Standing AC offers a flexible solution that delivers powerful cooling without requiring a ceiling cavity. Designed for floor-mounted or low-wall installation, this unit is ideal for expansive great rooms with large windows where long-distance airflow coverage is needed to evenly distribute conditioned air. Its fast cooling response is especially effective in areas that experience heat gain from sunlight.

Smart Technology

Smart-home tech, such as smart thermostats, smart vents for zoning, and energy monitoring, is a game changer when it comes to managing air flow and temperature in open-concept homes. When you learn your schedule and then program preferences using a convenient app, you’ll be able to optimize temperature settings to ensure your home stays as comfortable as possible without unnecessary energy use. 

Homeowners can easily manage Tosot’s Concealed Ducted Unit via the included wired controller or through a smartphone using the Tosot+ app. You’ll be able to access customizable modes including sleep, timer, and schedule settings for precise comfort control. You also can control the Multi-Zone Mini-Split System independently to schedule and adjust settings to the preferred temperature through the Tosot+ app, ensuring personalized comfort in every room. Finally, the Unitary Ducted Central Heat Pump System integrates with most third-party 24V thermostats, such as Google Nest, Honeywell, and Ecobee, to easily monitor and control the temperature. 

Flexible Installation

The design and construction of Tosot’s heat pump units also contribute to their ability to efficiently and effectively cool larger spaces. The Multi-Zone Mini-Split System, for example, supports extra-long piping at a maximum length of up to 100 meters (328 feet) and vertical elevation of 25 meters (82 feet), enabling flexible installation across large homes. Next, the design of the Concealed Ducted Unit’s side return can be easily converted to a bottom return. Both return and supply vents can be positioned on the side or bottom, enabling seamless integration and partial or full ceiling structures and diverse architectural layouts. The slim profile design of the Unitary Ducted Central Heat Pump System’s outdoor unit can fit in various installation areas such as balconies and roofs, while the side-charge design occupies half the area of conventional top-discharge designs, helping to save space.