COSTWAY 18,000 BTU Mini Split Air Conditioner | Energy Star, with Heat Pump, 21 SEER2 Inverter Split AC with 24H Timer for Rooms up to 1250 Sq.Ft (Airtural Series)
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Availability:
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Arrives
Jul 23 – Jul 25
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Style: 18000BTU, 208-230V, 21 SEER2
Features
- ENERGY STAR&AHRI Certified: Most efficient 2024 Energy Star verified. COSTWAY mini spilt ac unit has much lower operating costs and is kinder to the environment. Enjoy Eco-friendly lifestyle, enjoy reduced power bills than non-Energy Star devices. GWP of air conditioning refrigerants is 675.
- [Powerful Output & Premium Compressor:]With a cooling capacity at 17,000 BTU, a heating capacity at 17,700 BTU and a 1.5 ton heat pump, this mini split air conditioner enables a wide coverage up to 1250 sq.ft. The durable outdoor unit can withstand a max operating temperature from 14F-122F, offering stable performance under extreme weather conditions.
- [Innovative Inverter Technology:]This technology adjusts the compressor speed to maintain the set temperature without frequently turning the compressor on and off, which has less energy cost and offers stable cooling. With a 21 SEER2 rating and a 9 HSPF2 rating, this unit is built to be energy efficient. It is also ETL approved and AHRI certified.
- [4-in-1 Design for Year-Round Comfort:]This mini split AC unit features cool, dry, heat and fan mode and other practical functions including F/C temp display, turbo mode, sleep mode and 24H timer. With a 60F-90F adjustable temp range and 618 CFM 4D powerful air flow, this AC unit delivers efficient cooling and heating performances, ideal for home or commercial use.
- [Built-in Self-Cleaning Function: ]The self-cleaning at 135F largely helps to simplify regular cleaning and protect your familys respiratory health, and the process is as follows: condensation, frosting, melting, sterilization, washing and ventilation. Besides, the filters are also removable and washable under water.
- COSTWAY's superior quality and design are backed by an industry-leading manufacturer's warranty. This warranty covers 5 years of parts replacement and 8 years of compressor coverage, ensuring customers can rely on our products for years to come. In addition to this, the installation of this equipment should be done only by a Licensed HVAC Installer.
- [Whats Included:]The package includes indoor and outdoor units, remote control and installation kit with 13 ft copper piping set and communication wire. The remote control with 26 ft effective control distance provides full control to the AC unit, and it is equipped with child lock for extra security.
- Tips:Pre-charged with the advanced R32 refrigerant, our mini split stands as the premier eco-conscious option. In contrast, competitors rely on outdated refrigerants, which pose greater harm to the environment. Should the need arise to supplement refrigerant levels, kindly inquire about the accessibility of R32 at your nearby vendor.
Brand: COSTWAY
Capacity: 67 pints
Cooling Power: 18000 British Thermal Units
Special Feature: Energy Star, Auto Clean, Dehumidifier, Dust Filter, Fast Cooling, Heating And Cooling Function, Inverter Compressor, 4 Way Swing, ECO mode, iFEEL, and Turbo function See more
Product Dimensions: 8.5"D x 38"W x 12.5"H
Start year: 2024
Seasonal Energy Efficiency Ratio (SEER): 21.00
Color: 18000BTU, 208-230V, 21 SEER2
Voltage: 208 Volts (AC)
Noise Level: 23 Decibels
Cooling Power: 18000 British Thermal Units
Additional Features: Energy Star, Auto Clean, Dehumidifier, Dust Filter, Fast Cooling, Heating And Cooling Function, Inverter Compressor, 4 Way Swing, ECO mode, iFEEL, and Turbo function
Color: 18000BTU, 208-230V, 21 SEER2
Noise: 23 Decibels
Refrigerant: R-32
Filter Type: washable
Inverter Type: Has Inverter
Installation Type: Split System
Compressor Type: scroll compressor
Outdoor Unit Compatibility: Requires New Outdoor Unit
Is Outdoor Unit Required: Yes
Air Conditioner Application: Home and Office
Voltage: 208 Volts (AC)
Power Source: Corded Electric
Wattage: 1400 watts
Is Product Cordless: No
Seasonal Energy Efficiency Ratio (SEER): 21.00
Efficiency: High (SEER2 21, HSPF2 8.5)
Annual Energy Consumption: 1650 Watts
Air Flow Efficiency: 0.34 Cubic Feet Per Minute Per Watt
Capacity: 67 pints
Floor Area: 1250 Square Feet
Form Factor: Mini-Split
Number of Heating Elements: 1
Brand Name: COSTWAY
Start Year: 2024
Model Name: Split Air Conditioner
Model Number: FP10518US-12WH
Included Components: 1 x Outdoor Unit, 1 x Indoor Unit , 1 x13 ft Copper Connection Pipe - Air Pipe, 1 x 13 ft Copper Connection Pipe - Liquid Pipe , 1 x 6.5 ft Drain Hose, 1 x 13 ft Communication Wires, 1 x Remote Control, 2 x Battery, 1 x Tape, 1 x Luting (Putty), 1 x User Guide
Manufacturer: COSTWAY
Item Type Name: Split Air Conditioner
Unit Count: 1.0 Count
Warranty Description: 8 years of parts replacement and 8 years of compressor coverage
Item Dimensions D x W x H: 8.5"D x 38"W x 12.5"H
Item Weight: 25.5 Pounds
Window Opening Maximum Width: 8.5 Inches
Window Opening Minimum Height: 12 Inches
Window Opening Minimum Width: 21.59 Centimeters
Window Opening Maximum Height: 12.5 Inches
Control Method: Remote
Controller Type: Remote Control
Warranty Type: Limited
EU Spare Part Availability Duration: 5 Years
BEE Star Rating: Energy Star Most Efficient 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jul 23 – Jul 25
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 18000BTU, 208-230V, 21 SEER2
Bought this in August of 2024. Have used it steadily for 1.5 years now. Cools and heats a 900sqft open shop. It does a good job. I have not had any issues with it what-so ever. Installation was not too hard. The Install direction are just okay - but I managed. My unit is 208-240V. For the cost - it was really a bargain. I would recommend to anyone that is a DIY type person. Having a HVAC tech install it would have really upped the affordability. So far - it has been a good unit. My thanks to the supplier/vendor for the reasonable price and quick shipping.
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Reviewed in the United States on March 7, 2026 by Dudester
Style: 12000BTU, 208-230V, 21 SEER2
Bought the 12,000 btu in January for a renovated 460 sq ft garage apartment. It’s May and still going. Be sure and clean the filter frequently. Super quiet. Works like a champ! My a/c guy originally said to get Mr. Cool, but has changed his tune. Now prefers these a lot. Charged us $400 to put it in. We already had the electrical in place because my son’s an electrician. Very affordable home improvement. Simple to operate. We bought two more, one for the 385 sq ft master bedroom, same BTU’s cause it’s the west side of an older home, and a 9,000 BTU for our 160 sq foot music shed. That one arrived without a filter cover. Called Costway customer service. Kathy was friendly even while sick. They sent cover. Took about 10 days. Finally got to turn on the shed’s mini split. Then after a week it wasn’t cooling. A/C guy came and charged the line. May have a leak in the line set. Not sure yet. Should know before too long. They didn’t find one. He said Costway would send another unit if it stops cooling again. It might be in the blower area the a/c man said. Even with the inconvenience, it’s been relatively painless overall considering the cost of the mini splits. Highly recommend.
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Reviewed in the United States on May 21, 2026 Reviewed in the United States on May 21, 2026 by Brandy Sanderson
Style: 18000BTU, 208-230V, 21 SEER2
Works flawlessly, rapidly cools 20'X40' w/12' ceiling bedroom and maintains temp with no problem. I seldom run it below 73F but tested down to 69F. Texas hasn't gotten over a 100F yet this year, but not expecting it to struggle to maintain temp. Well packaged, well reinforced internally to prevent damage -- zero shipping damage -- this is extremely important. Purchased another brand (starts and ends with T) that was very poorly packaged/fell apart and missing parts, worried if it was going to work. Can't hear outside unit when in use, indoor unit could be a little quieter but still very quiet (I'm looking for absolute silence when sleeping). Came with everything you need to install. This is an unsolicited review -- I absolutely hate Vine reviews.
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Reviewed in the United States on May 19, 2026 by Steve
Style: 12000BTU, 115V, 22 SEER2
It has performed great for a couple of months. I was concern that the noise from the outside unit would be high because we set it right outside on our bedroom . To my surprise, the outside unit is almost silent. We've had multiple 100+ degree weather almost all month and the unit has preformed great! we keep it at 74. Anything lower makes the room too cold, yep is that good. The only downside, is the remote. The instructions are not very clear specially when trying to set the timer. That is is the only down side. But other than that, we are very happy with the purchase so far. Installation was standard, meaning nothing different from every other unit, brand or size. For the installation you will multiple additional tools. but again, this goes for every other unit regardless of the brand etc. The air flow form the inside unit is great. The noise is similar to an standard fan. Overall, very happy with the quality of the unit.
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Reviewed in the United States on July 12, 2025 by Sandra Orozco
Style: 18000BTU, 208-230V, 21 SEER2
When I first got this mini split hooked up, I rushed here to write a glowing review. I was overly impressed with it, and how well it worked in my application. But that's where the good things stop. about a week later, the vanes that move side to side, stopped working. I looked into it, and the arm that moves them, came disconnected. I snapped them back together, but within the first couple movements, they disconnected again. Clearly an issue. Especially for something I didn't have very long. I contacted Cost Way through their Facebook page, and got a response from them. I explained the issue, and I was told to record a video, documenting the issue. So, I did. It was clear as day, that the cheap plastic arm, failed. Whomever I was speaking to, said they would make a ticket for the issue and someone would contact me on how to move forward. low and behold... Here I am a month later, and no one has contacted me. now, I'll be the first to admit that the unit still works. However. If there is ZERO support for something so minor... What do you think you will get when something major happens? After initial purchase, parts, labor to have it installed, it cost me just over $1800 bucks. After all that money spent, I have a unit that won't move air side to side, after one week. That's absurd. It just goes to show, that saving a few bucks isn't always the best route to take. I don't expect that I'll hear anything from them, and that right there tells me that once they have your money, they don't care. So, my advice is.... Stay away from them. For me, at least my unit still cools. But for the next person that has a much bigger issue... They will be in trouble. It's just not worth it to do business with a company that flat out doesn't care. They could have made minimal effort, corrected the issue.. And my glowing review would still be here. But now we know what happens when you have an issue.
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Reviewed in the United States on September 10, 2025 by Mark
Style: 18000BTU, 208-230V, 21 SEER2
I bought the 18k 21 seer unit. It works great, nice and quiet, easy to install. I would give it five stars. However the remote t-stat is not accurate, I have to set it at 84 degrees do it to maintain 76 in the space I'm cooling. no instructions on how to use the remote. Also the circulating fan on the inside unit doesn’t cycle off. I’m using this unit to cool my garage while I’m out there, so no big deal. However!!!
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Reviewed in the United States on March 12, 2026 Reviewed in the United States on March 12, 2026 by John Werner
Style: 12000BTU, 208-230V, 21 SEER2
We’ve had these in for about two months. We chose mini splits because the house we bought had outdated baseboard heating and no central AC. Our house is 1200 sq feet and we purchased two of these. (One for the end of the hallway and one for the main living area. They are AWESOME. SO affordable for us as first time homebuyers. The installation wasn’t hard once you get the hang of it. My husband did these with some help. You do have to know your way around wiring and using a hvac vacuum. We are in the North and it’s gotten into the 20’s so far and they’ve done great. The remote doesn’t do much beyond change the temperature it seems. However I should mess with it some more. I’ve barely seen a difference in my electric bill!!!! Which is amazing. Since we have one at the end of the hallway to keep all the rooms warm/cold, I do tend to run a box fan just to keep the air flowing better down the hall. You can’t hear the indoor unit running. We are really happy to have found these. These DO come with “whips” to connect to the disconnect box outside and they do seem decent quality. We already had our own so used those. The drain hose seems flimsy so you may want to use your own pvc pipe. Thanks for reading!
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Reviewed in the United States on December 1, 2025 Reviewed in the United States on December 1, 2025 by D.&A. S.
Style: 18000BTU, 208-230V, 21 SEER2
I was skeptical, being my first mini split I figured I'd try the economic friendly choice and I'm not disappointed! 18k btu runs quietly and nicely. The air smells clean too. It took 30 minutes to cool down my 750 sqft, the liquid line has a little bit of sweat going into the outside unit so I let it cool into the next room. It's seriously pumping the heat out of there too! The unit is quite modern inside and the outdoor has a neat blue fan "like mr cool" If you run into the problem of not holding a vacuum after you pull for about 30 minutes don't worry... Go back over your brass to copper fittings and treat them like you're finishing machine threads with lock washers then proceed with 1/8 to 1/4 turn and you can feel the copper mash "flatter" seating around the brass, then when it begins to resist you are finished. After doing this technique I had a -30 for 30 minutes in isolation "gauges closed" from unit. With everything connected and gauges closed I then unleashed the liquid line "thin" and backed off to the metal rings, no further. It made some whooshing momentarily, after that stopped I unleashed the suction "thick" line, it sounded like a hollow space evacuating. Now it was time to back off my blue line from the gauges connected to the service port. Give it half a turn off and make sure the next turn is a full one, as to not leak too much r32 out. After that you're good to go! Thanks a buch CostWay, highly anticipating the installation of your 18kbtu 19seer
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Reviewed in the United States on September 2, 2025 by Diamon Hanz