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frontpageSkillful_Pickle | Staff posted Apr 21, 2026 03:13 PM
frontpageSkillful_Pickle | Staff posted Apr 21, 2026 03:13 PM

Costway Airtural Series 18000 BTU Ductless Mini Split Air Conditioner/Heater

+ Free S&H

$609

$1,598

61% off
Costway
43 Comments 18,569 Views
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Deal 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.

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

Original Post

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.

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

Original Post

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Top Comments

JD713
322 Posts
171 Reputation
Last year, my old central AC is not blowing cold air anymore. I don't think their still have refrigerant for old AC. So I purchased the Yitahome mini split AC 18k BTU total $469: https://ibb.co/HT2XnG6r

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.

43 Comments

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Apr 22, 2026 01:22 PM
771 Posts
Joined Feb 2019
joebellsApr 22, 2026 01:22 PM
771 Posts
Quote from Igorkocev :
Is is that difficult to dyi this split unit? Or any for that matter .... What is the cheapest option?
They aren't hard to install, I think DIY.

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.
1
Apr 22, 2026 02:52 PM
4,199 Posts
Joined Jan 2011
Loudog504Apr 22, 2026 02:52 PM
4,199 Posts
Quote from TheRedEyeBandit :
Any deals on 24000 btu units?
lol i bought a 12k btu from home depot and they sent me a 24k btu... Best thing ever. It turns my guest house into an ice box. Love 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.
Last edited by Loudog504 April 22, 2026 at 07:55 AM.
Apr 22, 2026 03:00 PM
132 Posts
Joined Dec 2023
iamjeffApr 22, 2026 03:00 PM
132 Posts
Silly question from one who does not have AC (living in the PNW).

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?
Apr 22, 2026 03:17 PM
59 Posts
Joined Jan 2020
GreenShape796Apr 22, 2026 03:17 PM
59 Posts
Quote from iamjeff :
Silly question from one who does not have AC (living in the PNW).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?
I would do 2 smaller units one per floor. Some friends have a 2 level with an 18k on the lower level. It heats both levels fine but the upper level gets warm in the summer. (Southern Washington coast)
Apr 22, 2026 03:33 PM
1 Posts
Joined Nov 2025
IndigoStep3332Apr 22, 2026 03:33 PM
1 Posts
Quote from Jason1x3 :
no wifi kills it
I use a wifi remote module as all these mini splits have a remote to use.... just set your remote to the wifi module - works perfectly and I can set schedules, etc
Apr 22, 2026 03:33 PM
132 Posts
Joined Dec 2023
iamjeffApr 22, 2026 03:33 PM
132 Posts
Quote from GreenShape796 :
I would do 2 smaller units one per floor. Some friends have a 2 level with an 18k on the lower level. It heats both levels fine but the upper level gets warm in the summer. (Southern Washington coast)
Thanks, we were thinking of one in the main upstairs area (fam room, kitchen, dining all open, high ceilings) and one in our master bedroom (also upstairs, of course it has a door so can be closed off from rest of the main area).

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....
Apr 22, 2026 04:10 PM
795 Posts
Joined Nov 2005
391412Apr 22, 2026 04:10 PM
795 Posts
I got the Pioneer 12k mini-split (generic name - same system) for under $500 Summer of 2022. Great volume of both Heating & Cooling; IMHO Its Great! I installed it with my brother over a couple of afternoons, its a bit of work, but doable as a DYI project. I wanted to point out we did not use a Traditional evacuation system; we used their discharge/fill can (per instructions) discharging air in connection tubing - listening for air bubble discharged as gapping to the constant stream - Easy to do and It worked. I take nothing from HVAC folks from insisting on a vacuum; I expected to have to do that, and was surprised this 'can' system was a company sponsored way to complete the connections and did not void the warranty
1

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Apr 22, 2026 04:48 PM
594 Posts
Joined May 2019
E_M__Apr 22, 2026 04:48 PM
594 Posts
Quote from joebells :
I have the vacuum tool from a previous install of one. But yeah I need an electrical shut off box, and a breaker(and I guess it would be fair to include the cost of the wire I already have).
If you get a 115v you can literally just plug it into an outdoor in-use box. The plug will get by as a disconnect, and w/ my inverter ones I only pull 1kw if I'm running the heater; the AC inverter varies between 400-600watts from what I've seen, so the breaker is already there and we don't need a dedicated electrical run.
1
Apr 22, 2026 04:58 PM
380 Posts
Joined Feb 2009
GGYY22Apr 22, 2026 04:58 PM
380 Posts
Would it be difficult to install on the second floor? During the summer our second floor gets very hot and the central AC is not helping at all Frown
Apr 22, 2026 05:15 PM
510 Posts
Joined Nov 2016
deviantspeedApr 22, 2026 05:15 PM
510 Posts
Quote from Brundizzle :
No hdmi, either
no surround sound?
Apr 22, 2026 05:39 PM
18 Posts
Joined Aug 2015
ehobaxApr 22, 2026 05:39 PM
18 Posts
I know a lot of people are hesitant to do the DIY route for mini-splits. If you only need AC only occasionally like PNW dude, a window unit might be a better option. Mini splits are more efficient, but the time and hassle for occasional AC might be better spent on a window unit.
Apr 22, 2026 06:03 PM
109 Posts
Joined Jan 2018
nathan.swigertApr 22, 2026 06:03 PM
109 Posts
Im gonna add this to my building a garage purchases. Thanks
Apr 22, 2026 06:36 PM
73 Posts
Joined Dec 2019
fernando65Apr 22, 2026 06:36 PM
73 Posts
i got the 12k btu one last year, it works great for heat, havent tried it for AC yet
Apr 22, 2026 06:37 PM
261 Posts
Joined May 2007
BigGreenMatApr 22, 2026 06:37 PM
261 Posts
Quote from iamjeff :
Silly question from one who does not have AC (living in the PNW).

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?
The vast majority of houses where I live in Oak Park, IL. Most were built before forced air heat and have no ducting and use radiators and boilers. Many of them are being retrofitted with Spacepaks or these ductless minisplits to achieve AC and shoulder season heating.

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Apr 22, 2026 06:38 PM
261 Posts
Joined May 2007
BigGreenMatApr 22, 2026 06:38 PM
261 Posts
Quote from ehobax :
I know a lot of people are hesitant to do the DIY route for mini-splits. If you only need AC only occasionally like PNW dude, a window unit might be a better option. Mini splits are more efficient, but the time and hassle for occasional AC might be better spent on a window unit.
Yeah, having to penetrate your envelope in more places can also have some big drawbacks vs. temporary window units.

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