Della Optima Series 35000 BTU Dual Zone Mini Split AC with R-454B (9K+24K) – Up to 1900 Sq.Ft.

Della Optima Series 35000 BTU Dual Zone Mini Split AC with R-454B (9K+24K) – Up to 1900 Sq.Ft. The Optima Series 35,000 BTU Dual Zone Mini Split AC offers a powerful solution for heating and cooling unevenly sized spaces up to 1,900 sq. ft. With one 9,000 BTU and one 24,000 BTU indoor unit, it’s perfect for pairing a smaller room with a significantly larger area. This pre-charged, ductless inverter system includes a high-efficiency heat pump and dehumidification mode for year-round comfort. Each zone operates independently, allowing for precise temperature control in every room. Please Note: This multi-zone mini split system uses R454B refrigerant and is pre-charged for a length of 25 feet of each lineset.If your installation exceeds this total length, additional refrigerant is required. Please consult a licensed HVAC technician to properly add refrigerant during installation. Tech Specs Brand Della Voltage 230 Volts Refrigerant R454B Seasonal Energy Efficiency Ratio (SEER) 24 Resources User Manual Remote Control (New Black) Manual   Lifetime coverage Unmatched support that's best in class to give you peace of mind at no additional cost.     Quiet comfort all night long. Sleep like a log with an auto mode, adjusting the room temperature to the scientific sleep curve, Clocking in at just 34dB, it's quieter than a whisper in a library.   Durable & efficient. Our mini splits feature gold plated fins that prevent rust corrosion, creating durable and efficient performance in both blistering heat and freezing cold.   Say goodbye to frost buildup! Our bottom electric heating helps prevent frostfrom forming at the base of your modelspeeding up defrosting and boosting efficiency.   How To Videos Step-by-Step Guides for Easy Setup and Use 5 Urgent Steps Need to Know Before Installing Della Mini Split AC | Mini Split Installation Guide .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }   Exploring Top Features Of Della App: Custom Geo Location Setup For Smart Home .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }   How to Properly Connect Wires for Della's TL, Optima & Econo Mini Splits .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }   FAQs What kind of refrigerant does this use? This unit uses R454B refrigerant. This unit comes pre-charged with R454B refrigerant for up to 24.5 feet of lineset. If your installation does not exceed this length, no additional refrigerant is needed. Can I get longer extensions for this installation kit? Yes, for multi-zone units, you can go back to the product options to select different lineset lengths for each indoor unit.Please note, if the extended lineset is longer than 25 feet, additional refrigerant will be required. Make sure to consult a professional HVAC technician for proper installation. When the unit is in auto mode, what will the room's temperature be maintained at? In auto mode, the unit automatically switches between cooling and heating to maintain the set temperature. You can adjust the target temperature manually—typically between 60°F and 86°F —depending on your comfort. Do the condenser lines come pre-vacuumed or do they have to be vacuumed? The mini split condenser and lines are not pre-vacuumed. You will need to vacuum the system during installation to remove air and moisture before releasing the refrigerant—this is essential for proper operation and longevity.