Item 1 of 8
Item 1 of 8
expiredSkillful_Pickle | Staff posted Apr 21, 2026 3:13 PM
Costway Airtural Series 18000 BTU Ductless Mini Split Air Conditioner/Heater
$609
$1,598
61% off
+ Free S&Hat Costway
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+ Free S&Hat CostwayDeal Details
Costway has Costway Airtural Series 18000 BTU 21 Seer2 Ductless Mini Split Air Conditioner/Heater on sale for $799 - Extra $190 Off w/ discount code XQFP10518 (apply in cart) = $609. Shipping is free.
Thanks to SD Staff Skillful_Pickle for finding this deal
Note, must apply the listed discount code for savings to apply in cart.
Thanks to SD Staff Skillful_Pickle for finding this deal
Note, must apply the listed discount code for savings to apply in cart.
Editor's Notes
Written by Discombobulated | Staff- About the Deal
- This ductless mini split air conditioner/heater features both cooling and heading and can cover up to 1250 sq. ft. of space w/ 7 modes/4 wind speeds + 21 Seer2 rated and certified by Energy Star, ETL and AHRI
- Product will include a comprehensive installation kit
- Offer valid through May 30, 2026 or while coupon savings/supplies last
- Additional Details
- Product is eligible for return within 30 days of purchase
- Get 1%-5% cash back on deals like this with a cash back credit card. Compare the available cash back credit cards here.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costway has Costway Airtural Series 18000 BTU 21 Seer2 Ductless Mini Split Air Conditioner/Heater on sale for $799 - Extra $190 Off w/ discount code XQFP10518 (apply in cart) = $609. Shipping is free.
Thanks to SD Staff Skillful_Pickle for finding this deal
Note, must apply the listed discount code for savings to apply in cart.
Thanks to SD Staff Skillful_Pickle for finding this deal
Note, must apply the listed discount code for savings to apply in cart.
Editor's Notes
Written by Discombobulated | Staff- About the Deal
- This ductless mini split air conditioner/heater features both cooling and heading and can cover up to 1250 sq. ft. of space w/ 7 modes/4 wind speeds + 21 Seer2 rated and certified by Energy Star, ETL and AHRI
- Product will include a comprehensive installation kit
- Offer valid through May 30, 2026 or while coupon savings/supplies last
- Additional Details
- Product is eligible for return within 30 days of purchase
- Get 1%-5% cash back on deals like this with a cash back credit card. Compare the available cash back credit cards here.
Community Voting
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Top Comments
It works fantastic. After that, I bought 2 more 9k BTU for bedrooms. So total 3 mini split cost under $1200. It must cheaper than getting new central AC, and SAVE A LOT ENERGY. Just 10 months, my house save almost $500 compare to last year use central AC. And my house never get cool and warm like this before. If you know how to install mini split, you will love it. It very quiet and efficiency compare to central and window AC.
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45 Comments
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But you do need to do electrical work. Generally a new line from the Fuse box with a new breaker, and you usually need a shut off box near the outside unit. Both pretty easy to do if you have any DIY skills.
The other thing you'll need to do is use a vacuum pump to clear out the lines before you start it, easy to do, but you need the pump. Lots of youtube videos to watch and decide if you feel comfortable doing it.
My dad does electrical so it wasn't much to run the 240 to it vs using the existing 120v lines. That's the only additional consideration going 24k btu.
If i used this (or similar) on an upper floor about 1200 sq ft but our (double wide) stairway leading to the lower floor is open, would it still cool ok?
will a mini split still cool properly or does the open stairway cause a problem for cooling?
Our lower floor is cool in the summer so we were not planning on one downstairs. In the winter, we use central heat, so no need to use a mini split just for heat. I didn't realize the AC units also had heat!
But would the open dual wide stairway cause any concern for cooling? I'm assuming cold air wants to go down....so is there too much "leakage"?
If that makes sense....
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If i used this (or similar) on an upper floor about 1200 sq ft but our (double wide) stairway leading to the lower floor is open, would it still cool ok?
will a mini split still cool properly or does the open stairway cause a problem for cooling?
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