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Skillful_Pickle | Staff 34.1K Views
Aug 3, 2026 4:58 PM

Costway Lithzen 12000 BTU 18.2 SEER2 WiFi Mini Split Air Conditioner/Heater

$392

$719

45% off
+ Free S&Hat Walmart
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Update: This popular deal is still available (now w/ a slight price drop).

Costway via Walmart has Costway Lithzen 12000 BTU 18.2 SEER2 WiFi Mini Split Air Conditioner/Heater (White-208/230V) on sale for $395.99 -> now $391.49. Shipping is free.

Thanks to SD Skillful_Pickle for finding this deal

Note, product will be sold/shipped by Costway

Editor's Notes

Written by RevOne | Staff
  • Price Research
    • At the time of research, this product is $64 lower (13.91% savings) than the next best available price from a reputable merchant with prices ranging from $459.99
  • About the Deal
    • This mini split air conditioner offers an impressive 12000 BTU cooling/heading capacity w/ WiFi-enabled convenient smart controller and 18.1 SEER2 F32 refrigerant high efficiency
    • Offer valid while promotional price/supplies last
  • Additional Details
    • Product is eligible for return within 30 days of purchase

Original Post

Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available (now w/ a slight price drop).

Costway via Walmart has Costway Lithzen 12000 BTU 18.2 SEER2 WiFi Mini Split Air Conditioner/Heater (White-208/230V) on sale for $395.99 -> now $391.49. Shipping is free.

Thanks to SD Skillful_Pickle for finding this deal

Note, product will be sold/shipped by Costway

Editor's Notes

Written by RevOne | Staff
  • Price Research
    • At the time of research, this product is $64 lower (13.91% savings) than the next best available price from a reputable merchant with prices ranging from $459.99
  • About the Deal
    • This mini split air conditioner offers an impressive 12000 BTU cooling/heading capacity w/ WiFi-enabled convenient smart controller and 18.1 SEER2 F32 refrigerant high efficiency
    • Offer valid while promotional price/supplies last
  • Additional Details
    • Product is eligible for return within 30 days of purchase

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47 Comments

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Aug 10, 2026 8:05 PM
863 Comments
Joined Apr 2018
Tedusmc2009Aug 10, 2026 8:05 PM
863 Comments
Quote from NIC_029 View quoted comment :
Have you got any quotes on installation? I'm worried about the cost would be much more than the ac itself
SoCal $400. I got 240v from home depot couple years ago.
Aug 10, 2026 8:18 PM
1K Comments
Joined Nov 2015
rramprasAug 10, 2026 8:18 PM
1K Comments
Quote from Tedusmc2009 View quoted comment :
SoCal $400. I got 240v from home depot couple years ago.
Do you mind messaging me your guy? Thank you
Aug 10, 2026 8:54 PM
1.5K Comments
Joined Oct 2013
muscletoneAug 10, 2026 8:54 PM
1.5K Comments
Quote from muscletone View quoted comment :
I'm with you on the 115v piggy back. It would make it a whole lot simpler and less expensive to running dedicated lines to four bedrooms in my case. Are you fairly certain a dedicated line is not required for this or a 10000 BTU unit. I can live with no or very light uses of the other outlets. Thanks!
Everywhere I read, mini splits require a dedicated circuit to meet manufacturer requirements and town codes.
Aug 11, 2026 11:27 AM
7.6K Comments
Joined Aug 2007
lotsalotsadealsAug 11, 2026 11:27 AM
7.6K Comments
Quote from FaithfulGazelle385 View quoted comment :
115v may be easier but it depends what circuit/breaker line you piggyback from. If there's not much plugged into it then the 115 will be much simpler to deal with. Otherwise you're looking about running a new line from the main panel. Unless you've done this before, you're either: ripping drywall, laying out the line, and hiring an electrician for the first review and hookup (inspection following by the city) OR hiring an electrician to do the whole thing. So in a very select few cases, 115v is a great solution. I'd bet that number decreases for ppl shopping for discounted units. FWIW: 4.6A for the 115v and 8.5A for the 220V.
Quote from muscletone View quoted comment :
I'm with you on the 115v piggy back. It would make it a whole lot simpler and less expensive to running dedicated lines to four bedrooms in my case. Are you fairly certain a dedicated line is not required for this or a 10000 BTU unit. I can live with no or very light uses of the other outlets. Thanks!
Quote from muscletone View quoted comment :
Everywhere I read, mini splits require a dedicated circuit to meet manufacturer requirements and town codes.
Bottom line:
REQUIREs a dedicated circuit with disconnect.

These are the real DIY going forward.
They are down to about $1k.
https://mrcooldirect.com/products...-mdm10115d
Last edited by lotsalotsadeals August 11, 2026 at 04:29 AM.
1
Aug 11, 2026 12:09 PM
328 Comments
Joined Feb 2014
JasonJ6420Aug 11, 2026 12:09 PM
328 Comments
Quote from kozg View quoted comment :
What's your favorite youtube videos to learn installation? Thanks!
Mini Split Install and Review: https://www.youtube.com/playlist?...66CAehXs7P
Aug 11, 2026 1:42 PM
29 Comments
Joined Mar 2024
FaithfulGazelle385Aug 11, 2026 1:42 PM
29 Comments
Quote from lotsalotsadeals View quoted comment :
Bottom line:REQUIREs a dedicated circuit with disconnect.These are the real DIY going forward.They are down to about $1k.https://mrcooldirect.com/products...-mdm10115d
I meaaaaan town codes are for HVAC pros and inspectors right?? Just dont install it visible from the street haha. Thanks for checking on that! I plan on branching out a subpanel for the garage so Ill add minisplit to the breaker count.
Aug 11, 2026 6:46 PM
418 Comments
Joined Sep 2017
limocadAug 11, 2026 6:46 PM
418 Comments
There are uneducated kids who work for used AC dealers installing this in India without issues. It's not rocket science as one guy with a lengthy post here, makes it out to be. Watch YouTube videos and some basic tools will do the job. You can get new Daikin units installed in India for $400-450. As usual they rape the American public in this country.
2

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Aug 12, 2026 3:52 AM
134 Comments
Joined Jul 2019
PurpleMitten6516Aug 12, 2026 3:52 AM
134 Comments
Quote from mphuie View quoted comment :
These are exaggerated claims from HVAC companies/techs trying to keep their exorbitant labor prices.I've installed 5 units, the oldest is going on 4 years and they're all still fine. Just a cheapo vacuum, manifold set and torque wrench from Amazon.
I've had this exact thought seeing all the comments every time these pop up. It's gotta be scared HVAC tech/salesmen.
Yes it would be a huge project for a complete newb DIY, but any homeowner who has a few projects under their belt and just a little common sense can spend 8-12 hours watching YouTube and figure out how to do this. I used to be scared of HVAC stuff just because I always was afraid of a leak but since I've installed 5 units that are going on 2 years old, not a single issue. They're cooling perfectly in our current 100+ temps.
Aug 12, 2026 6:01 AM
6.8K Comments
Joined May 2009
jkloisdafoiwdafAug 12, 2026 6:01 AM
6.8K Comments
Quote from limocad View quoted comment :
There are uneducated kids who work for used AC dealers installing this in India without issues. It's not rocket science as one guy with a lengthy post here, makes it out to be. Watch YouTube videos and some basic tools will do the job. You can get new Daikin units installed in India for $400-450. As usual they rape the American public in this country.
If you haven't installed one before, the first one can be a bit challenging even after watching many videos (where a lot of DIY youtubers don't quite do it correctly, and the struggling parts edited out)

bending the line behind the indoor unit and through the wall is kinda hard with just one person (bend indoor unit's lines 90 degrees and only have to deal with lineset from outside reduces so hassle)
doing electrical work correctly takes experience (how much wire to strip, crimping spade terminal correctly), and fighting the cover to connect cables to outdoor unit
dealing with refrigerant, is the vacuum pump working correctly, gauge reading in different scenarios
a lot of doing things in the optimal order is not obvious from the installation manual
Last edited by jkloisdafoiwdaf August 11, 2026 at 11:12 PM.
Pro
Aug 12, 2026 6:08 AM
481 Comments
Joined Jun 2023
JD713
Pro
Aug 12, 2026 6:08 AM
481 Comments
Quote from PurpleMitten6516 View quoted comment :
I've had this exact thought seeing all the comments every time these pop up. It's gotta be scared HVAC tech/salesmen.
Yes it would be a huge project for a complete newb DIY, but any homeowner who has a few projects under their belt and just a little common sense can spend 8-12 hours watching YouTube and figure out how to do this. I used to be scared of HVAC stuff just because I always was afraid of a leak but since I've installed 5 units that are going on 2 years old, not a single issue. They're cooling perfectly in our current 100+ temps.
Yup, don't listen to those HVAC tech, they tried to scare you and hiring them that all. If you got leak or not cooling anymore, recharge refrigerant is VERY EASY TOO. Just buy correct refrigerant for your mini split, then follow this video show you how to recharge refrigerant mini split: https://www.youtube.com/watch?v=oodaumlie9w
Aug 12, 2026 2:02 PM
11 Comments
Joined Nov 2014
BillOdomAug 12, 2026 2:02 PM
11 Comments
Quote from LeasedJet View quoted comment :
No one in their right mind would install this correctly for $300. Will it run? Probably, but not for as long as it should or without problems. Also, I think/hope you mean "lineset vacuumed" instead of "charged", the charging happens as soon as you open the valve on the condenser.The vac pump your local auto parts stores lend out are single stage and are well used and pretty much worn out. These inverter systems need a DEEP 500 micron or less vacuum for proper functionality and longevity and you cannot get that even with a brand new single stage pump with fresh quality vac oil. You can't measure for a deep vacuum and ensure no leaks without a digital micron gauge. Auto store doesn't lend them out. The ol' "XX minutes at on an analog gauge showing -30in/hg" doesn't tell you anything - especially if you haven't triple evac'd the lines with nitrogen.No, these are not pre-charged lines, they are patented so you're only going to find them with MRCOOL.You absolutely do need HVAC tools.
They all have precharged lines Tool can be rented for free from auto parts stores ! Easy to do it right Mr cool is ok but much more expensive I have both
Aug 12, 2026 2:22 PM
81 Comments
Joined Nov 2021
ReddygamerAug 12, 2026 2:22 PM
81 Comments
How the brand? Is it good brand?
Aug 12, 2026 3:36 PM
2.9K Comments
Joined Jun 2012
lennonstAug 12, 2026 3:36 PM
2.9K Comments
Quote from JD713 View quoted comment :
Yup, don't listen to those HVAC tech, they tried to scare you and hiring them that all. If you got leak or not cooling anymore, recharge refrigerant is VERY EASY TOO. Just buy correct refrigerant for your mini split, then follow this video show you how to recharge refrigerant mini split: https://www.youtube.com/watch?v=oodaumlie9w
Assuming you have the EPA 608 cert to buy the stuff (use skillcat app on play store to get it). You'll end up buying a lot more refrigerant than you need if you want a good price per pound. If you try to buy a small 2 pound charge you'll pay the same amount that you'd jus pay an hvac company to come out and charge it.

And if you don't actually fix the leak, you'll be doing this constantly.
Pro
Aug 12, 2026 10:36 PM
481 Comments
Joined Jun 2023
JD713
Pro
Aug 12, 2026 10:36 PM
481 Comments
Quote from lennonst View quoted comment :

Assuming you have the EPA 608 cert to buy the stuff (use skillcat app on play store to get it). You'll end up buying a lot more refrigerant than you need if you want a good price per pound. If you try to buy a small 2 pound charge you'll pay the same amount that you'd jus pay an hvac company to come out and charge it.

And if you don't actually fix the leak, you'll be doing this constantly.
NO, it is not. When my 18K BTU mini split got leak, I called the HVAC tech . He wants to charge me 3 lbs ($240) + labor $260 = $500 total. I tell him that I bought this mini split less than the price you recharge my AC. So I'm not doing. I go ahead purchase 20lbs R32 refrigerant and do it myself. Right now, I just saw 20lb R32 refrigerant only $219. And all you need is the AC vacuum pump and gauge set. Many of you DIY install mini split probably have that already.

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Aug 13, 2026 12:43 AM
101 Comments
Joined Aug 2017
wiseguy0323Aug 13, 2026 12:43 AM
101 Comments
Got mine installed for $1,200 in central FL last week and I just provided the unit

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