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OYLUS

Mini Split Air Conditioner - 18000 BTU Ductless Mini Split Ac/Heating System, 1250Sq.Ft, 208/230V 21SEER2 Wifi Enabled Inverter, Split AC Unit with Precharged Heat Pump, R454B, Installation Kit

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Availability: 18 left in stock
Fulfilled by Aidaoxi
Arrives Tuesday, May 26
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Style: 18000BTU,208-230V,21 SEER2,WiFi


Features

  • Year-Round PerformanceThis 18000 BTU mini split ac/heating system operates efficiently from -4F to 122F. Equipped with a crankcase heater and highefficiency compressor, it delivers reliable heating even at -13F, preventing frost and ice buildup for consistent winter performance, making this mini split heat pump a versatile solution for any climate.
  • Wide-Coverage 4D AirflowThis mini split air conditioner features 4D auto-swing louvers that move vertically and horizontally, circulating air evenly throughout your space. With 8 adjustable fan speeds , this ductless mini split ac/heating system effectively adapts to various room layouts for consistent comfort.
  • High-temp Self-CleaningThis mini split ac/heating system features an easily removable and washable filter for simple maintenance. The indoor unit could activate a 131F (55C) high-temperature self-cleaning cycle to help maintain fresh, well-conditioned airflow while keeping upkeep effortless.
  • Smart Control SystemManage all functions through the included remote or via your smartphone with WiFi connectivity. The system features iFeel mode for localized temperature sensing, while the LED display can be turned off for undisturbed sleep. With a 24-hour timer and safety lock, this minisplit AC/heating system offers intelligent, flexible control both at home and remotely.
  • Energy-Efficient InverterUsing eco-friendly R454B refrigerant, inverter technology and and AHRI-certified performance, this ductless mini split ac/heating system reduces energy consumption by up to 30% annually when used in ECO mode. Lower your electricity bills while staying comfortable with this efficient mini split heat pump.
  • Ultra-Quiet Operation With noise levels as low as 30dB in sleep mode, this mini split air conditioner runs quietly enough for bedrooms. Even at higher settings, it maintains a modest 40dB, ensuring peaceful rest without disruptive operational sounds.

Brand: OYLUS


Capacity: 4800 Cubic Feet


Cooling Power: 18000 British Thermal Units


Special Feature: 4 Way Swing, Auto Clean, Fast Cooling, Heating & Cooling Function, Silent Mode


Product Dimensions: 39.6"D x 9.4"W x 12.4"H


Seasonal Energy Efficiency Ratio (SEER): 21


Color: White


Voltage: 230 Volts


Noise Level: 30 Decibels


Refrigerant: R454B


Cooling Power: 18000 British Thermal Units


Additional Features: 4 Way Swing, Auto Clean, Fast Cooling, Heating & Cooling Function, Silent Mode


Color: White


Noise: 30 Decibels


Refrigerant: R454B


Filter Type: Mesh Filter


Inverter Type: Has Inverter


Installation Type: Split System


Compressor Type: rotary_scroll


Is Outdoor Unit Required: Yes


Air Conditioner Application: Residential


Item Dimensions D x W x H: 39.6"D x 9.4"W x 12.4"H


Item Weight: 26.3 Pounds


Window Opening Minimum Height: 25.98 Inches


Window Opening Minimum Width: 15.6 Inches


Window Opening Maximum Height: 13 Inches


Control Method: App, Remote


Controller Type: App Control, Remote Control


BEE Star Rating: 5 Star


Warranty Type: Limited


Brand Name: OYLUS


Model Name: mini split ac


Model Number: OAS-01_18K-230V_SEER20


Manufacturer: OYLUS


Included Components: Installation Kit, User Manual


Warranty Description: 1 Year Manufacturer


Voltage: 230 Volts


Power Source: Corded Electric


Wattage: 1700 watts


Seasonal Energy Efficiency Ratio (SEER): 21


Efficiency: High


Capacity: 4800 Cubic Feet


Floor Area: 1250 Square Feet


Room Type: Bedroom, Living Room


Form Factor: Mini-Split


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great all-season mini split for the price
Style: 11500BTU,115V,17 SEER2
I’ve been impressed with this mini split. It offers both cooling and heating, and the 11500 BTU size is marked for areas up to 750 sq. ft., so it works well for a large bedroom. What stood out to me most is that it’s packed with useful features. The product details list 7 models including Auto, cool, heat, dry, fan, sleep and ECO, plus extras like a 24-hour timer, 4D auto swing. I also like that it uses inverter techs and R32 refrigerant, which are promoted as more energy-efficient options. The main thing to keep in mind is installation. This is not really a plug-and-play appliance, and the product information says need professional installation so just keep in mind. Overall, this is an excellent ductless AC and heating system for anymore looking to heat and cool up to about 750 square feet. Great performance, quiet operation, and solid value for the price. ... show more
Reviewed in the United States on March 25, 2026 by Bobbie Joyce
    • Huge Energy Savings with This 19 SEER2 115V Ductless Mini Split AC/Heater
Style: 12000BTU,115V,19 SEER2
I recently installed this 12,000 BTU mini split AC/ heat pump system, and it has been a great addition to my home. It covers up to 750 sq. ft. with ease, keeping the room cool during hot days and warm during chilly nights. The 19 SEER2 rating really shows-it's energy efficient, and l've noticed a drop in my electricity bill compared to my old window unit. Installation was straightforward thanks to the included kit, though I'd still recommend having a helper or a professional if you're not handy with electrical work. It runs quietly, and the heat pump works well even in milder winter conditions. The 115V plug is convenient, so no need for major electrical upgrades. Overall, great value for the price! ... show more
Reviewed in the United States on February 25, 2026 by roys
    • Efficient and reliable mini split system
Style: 12000BTU,115V,19 SEER2
happy with this mini split system and how well it performs. It cools the room quickly and evenly, and the heating function works just as efficiently when needed. The unit runs quietly, which is a big plus. Setup was straightforward with the included installation kit, and everything arrived well-packaged. Overall, it’s an excellent value for the quality, performance, and energy efficiency it delivers. ... show more
Reviewed in the United States on February 22, 2026 by Habib Hossain Mohd Younus
    • Great Value! Quiet and Powerful!!!
Style: 12000BTU,115V,19 SEER2
Great mini split for the price! The 12,000 BTU cools my room really fast and keeps it comfortable. Installation was straightforward and the remote is easy to use. It runs pretty quiet and the inverter saves energy. Perfect for a medium-sized room. Very happy with this purchase so far!
Reviewed in the United States on March 10, 2026 by Chang
    • Nice little unit
Pretty straight forward to install but will need to vacuum the air at the end before unit will effectively cool,very quite hardly could even hear the outside unit standing next to it,I was a little worried with the 18000 BTU because we live in a older mobile home with a 50 amp service but amp draw running was less than 6 amps I was absolutely shocked hoe efficient this is,my only problem is I can figure out the wifi instructions as there is nothing in the manual and I can't find anything pertaining to this brand on the Internet ... show more
Reviewed in the United States on March 14, 2026 by Joshua W Bailey
    • Stable Performance and Practical Setup
Style: 12000BTU,115V,19 SEER2
This 12,000 BTU mini split system delivers consistent cooling and heating for a medium-sized space, maintaining steady temperature control without noticeable fluctuations. The 19 SEER2 efficiency rating supports reasonable energy use during extended operation, and the 115V configuration simplifies installation compared to higher-voltage units. The included installation kit covers standard components needed for setup, and overall construction appears solid. Indoor operation is relatively quiet, and the outdoor unit runs smoothly when properly installed. Suitable for spaces up to approximately 700–750 sq ft when correctly sized, it provides reliable day-to-day performance with straightforward controls and responsive adjustment. ... show more
Reviewed in the United States on February 25, 2026 by Daisy
    • Works great in my small workshop
Style: 12000BTU,115V,19 SEER2
I had this mini split system installed in my small workshop.. it does a great job with keeping the area cool and warm.. the price was exceptional and it works very well and the worker said that it was very easy to install.. however that was his words and not mine... I can tell you it was well worth the money and I've had it for 3 months since it's worked very well ... show more
Reviewed in the United States on April 4, 2026 by Maddy
    • Great for heating in winter!
Style: 12000BTU,115V,19 SEER2
We installed this mini split for home use and it has been working very well, especially during the winter. The heating function warms up the room quickly and keeps it comfortable. It runs quietly and is easy to control with the remote. The unit feels well made and looks clean on the wall. For the price, it's a great value for both heating and cooling. Very happy with this purchase and would recommend it to other families. ... show more
Reviewed in the United States on February 10, 2026 by Bernice

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