Heat Pump Selection Guide Room Dimensions in a New or Well-Insulated House Room Size Calculation Heat Pump Models Room Size Ceiling Height Room Volume Room Size Factor kW Heating High Wall System Floor Console System Standard GS Series AP Classic / Plus Series Large Capacity AS90 Designer EF Series Black Diamond LN Series RapidHeat KW Series RapidHeat KW Series HyperCore 4m x 3m x 2.4m = 28.8m³ x 55 watts per m³ = 1.6 kW GS25VFD† AP20VGD EF25VGK† LN25VGHZ† KW25VG†* 4m x 4m x 2.4m = 38.4m³ x 55 watts per m³ = 2.1 kW GS25VFD† AP20VGD EF25VGK† LN25VGHZ† KW25VG† 4m x 5m x 2.4m = 48.0m³ x 55 watts per m³ = 2.6 kW GS25VFD AP20VGD EF25VGK† LN25VGHZ† KW25VG† 5m x 5m x 2.4m = 60.0m³ x 55 watts per m³ = 3.3 kW GS35VFD AP25VG(K)D EF25VGK LN25VGHZ KW25VG 6m x 5m x 2.4m = 72.0m³ x 55 watts per m³ = 4.0 kW GS35VFD AP35VG(K)D EF35VGK LN35VGHZ KW35VG KW50VGHZ† 6m x 6m x 2.4m = 86.4m³ x 55 watts per m³ = 4.7 kW GS50VFD AP42VG(K)D EF42VGK LN50VGHZ† KW42VG KW50VGHZ† 6m x 7m x 2.4m = 100.8m³ x 55 watts per m³ = 5.5 kW GS50VFD AP50VG(K)D EF50VGK LN50VGHZ KW50VG KW50VGHZ 7m x 7m x 2.4m = 117.6m³ x 55 watts per m³ = 6.5 kW GS60VFD AP60VG(K)D LN60VG KW60VG KW60VGHZ 7m x 8m x 2.4m = 134.4m³ x 55 watts per m³ = 7.4 kW GS71VFD AP71VG(K)D 8m x 8m x 2.4m = 153.6m³ x 55 watts per m³ = 8.4 kW GS80VFD AP80VG(K)D 8m x 9m x 2.4m = 172.8m³ x 55 watts per m³ = 9.5 kW AS90VGD At outdoor ambient 7°C. † Higher rated unit for application, but can be used. *KW25 piping run cannot exceed 15m into a room of 28.8m3 volume. Room Dimensions in a Cold, Damp House or with Lots of Glass Room Size Calculation Heat Pump Models Room Size Ceiling Height Room Volume Room Size Factor kW Heating High Wall System Floor Console System Standard GS Series AP Classic / Plus Series Large Capacity AS90 Designer EF Series Black Diamond LN Series RapidHeat KW Series RapidHeat KW Series HyperCore 4m x 3m x 2.4m = 28.8m³ x 65 watts per m³ = 1.9 kW GS25VFD† AP20VGD EF25VGK† LN25VGHZ† KW25VG†* 4m x 4m x 2.4m = 38.4m³ x 65 watts per m³ = 2.5 kW GS25VFD† AP20VGD EF25VGK† LN25VGHZ† KW25VG† 4m x 5m x 2.4m = 48.0m³ x 65 watts per m³ = 3.1 kW GS35VFD AP25VG(K)D EF25VGK LN25VGHZ KW25VG 5m x 5m x 2.4m = 60.0m³ x 65 watts per m³ = 3.9 kW GS35VFD AP35VG(K)D EF35VGK LN35VGHZ KW35VG KW50VGHZ† 6m x 5m x 2.4m = 72.0m³ x 65 watts per m³ = 4.7 kW GS50VFD AP42VG(K)D EF42VGK LN50VGHZ† KW42VG KW50VGHZ† 6m x 6m x 2.4m = 86.4m³ x 65 watts per m³ = 5.6 kW GS60VFD AP50VG(K)D EF50VGK LN50VGHZ KW50VG KW50VGHZ 6m x 7m x 2.4m = 100.8m³ x 65 watts per m³ = 6.5 kW GS60VFD AP60VG(K)D LN60VG KW60VG KW60VGHZ 7m x 7m x 2.4m = 117.6m³ x 65 watts per m³ = 7.6 kW GS71VFD AP71VG(K)D 7m x 8m x 2.4m = 134.4m³ x 65 watts per m³ = 8.7 kW GS80VFD AP80VG(K)D 8m x 8m x 2.4m = 153.6m³ x 65 watts per m³ = 10.0 kW AS90VGD At outdoor ambient 7°C. † Higher rated unit for application, but can be used. *KW25 piping run cannot exceed 15m into a room of 28.8m3 volume. Each Home is as Individual as its Owner Ensuring your heat pump is the right size for your home, is as important as choosing the right style. Mitsubishi Electric offers a wide variety of heat pump options to choose from. Aside from design, the key to selecting the right heat pump to create a comfortable environment is to choose the correct unit size. Choosing an oversized unit could cost you more in energy usage, while an undersized heat pump may not provide the heating or cooling the room requires. This guide can be used to give you an approximate idea of heating unit size. A heat pump should not be purchased without first obtaining an in-home consultation by a qualified Mitsubishi Electric Authorised Installer. Choose the right one! Visit our online Heat Pump Selector at www.mitsubishi-electric.co.nz/heatpump/selector 45
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