Optima Series 42,000 BTU 4 Zone Mini Split AC efficiently heats or cools areas up to 2700 sq. ft. with 9,000 BTU and 23,000 BTU indoor units, making it ideal for multi-room applications. Equipped with Inverter Plus technology and a heat pump, this system ensures energy efficiency and reliable performance, even in temperatures as low as -13℉. Each zone is controlled individually via remote or the DELLA app for personalized comfort.
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.
This configuration is designed for spaces where not all indoor units are expected to operate at full power at the same time. If the total indoor capacity is higher than the outdoor unit’s output, the system can still function properly, but cooling or heating performance may be slower when all zones are operating beyond capacity. For consistently high demand across all zones, a larger or multi-system setup is recommended.
HOW LONG WILL IT TAKE FOR MY ORDER TO SHIP?
It normally takes us 1 business day to arrange the shipment. During peak seasons, it will take 2-4 business days to arrange the shipment. We provide free ground shipping, so there are no additional charges for shipping and handling.
HOW DO I TRACK MY ORDER?
Log into YOUR ACCOUNT, and you may see each individual order that you’ve placed with us. Select one that you want and you’ll be provided with all the details you need about the order.
Once your order is on the way you will receive a notification email.
If you don’t have the account, you will also receive a notification email once your order is on the way.
WHAT SHALL I DO IF I HAVEN’T RECEIVED MY ORDER?
Please CONTACT US immediately.
DO YOU SHIP INTERNATIONALLY?
Sorry, we don’t. We provide free ground shipping within 48 continental US states, Alaska, Hawaii, and Puerto Rico are excluded.
DO YOU SHIP TO P.O. BOX?
Sorry, we don’t. Kindly provide us with a street address, thank you.
For the full shipping policy, click here to view our shipping policy.
We offer return guarantees to ensure your satisfaction with every DELLA purchase.
Mini Split Units
DELLA provides comprehensive assistance for all orders within 100 days of purchase. If you're not satisfied with your mini split within 100 days of purchase from dellahome.com, you can return the product for a full refund.Products must be returned in their original operating condition, including all accessories and packaging.
If a product defect is confirmed, DELLA will, at its discretion, provide the necessary replacement parts free of charge. DELLA will also cover all shipping expenses for the delivery of replacement parts.
Window ACs, Portable ACs & Tower Fans
DELLA offers a 30-day money-back guarantee for window air conditioners, portable air conditioners, and tower fans.
If you are not satisfied with your purchase within 30 days, you may request a full refund and return your product.
Products must be returned in their original operating condition, including all accessories and packaging. The customer is responsible for return shipping costs.
Need to Start a Return?
To initiate a return, call us at (800) 863-4143 or contact our live chat team.
For full return terms, click here to view our return policy.
Tech Specs
| Voltage | 230 Volts |
| Refrigerant | R454B |
| SEER2 | 22 |
PERFORMANCE BEYOND PEAKS
#1 Selling Mini Split Brand on Amazon
24/7 Support
Lifetime Coverage
0% APR For 6 Months
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 room temperature to the scientific sleep curve.Clocking in at just 30dB, 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 goodbyeto 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
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.
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.
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. You can use our Rental Kit Service, which includes all the necessary tools for vacuuming and installing your mini split.
It normally takes us 1 business day to arrange the shipment. During peak seasons, it will take 2-4 business days to arrange the shipment. We provide free ground shipping, so there are no additional charges for shipping and handling.
Your satisfaction is guaranteed. If you're not satisfied with a DELLA appliance purchased within the last 100 days from dellahome.com, please call +1 (800) 863-4143. Our customer care team will assist you with the return process and issue a refund to your original payment method once we receive the product.
Yes! Orders paid via Shop Pay may earn 1% Shop Cash — part of Shopify’s reward program. Shop Cash can be used toward future purchases when checking out with Shop Pay. Just sign in with your Shop account and start earning automatically.
Use our Contact Page or Live Chat and we'll be happy to assist you!
