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Fourgonbound 119K Views
Jul 12, 2021 11:00 PM

Costco Members: MRCOOL DIY 18K BTU Mini-Split Air Conditioner & Heat Pump

$1,300

$1,300

+ Free Shippingat Costco Wholesale
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Deal Details
Costco Wholesale has for their Members: MRCOOL DIY 18K BTU Mini-Split Air Conditioner and Heat Pump with Wi-Fi Smart Controller (DIY-18-HP-230AE) on sale for $1299.99. Shipping is free.

Thanks community member Fourgonbound for sharing this deal

Note, you must be a Costco Member and signed into your account to view sale pricing and purchase at sale price. Refer to the forum thread for additional deal ideas and discussion.

Key Features:
  • The MRCOOL DIY series comes with pre-charged line sets alleviating one major obstacle to amateur installation in a single stroke.
  • Functionality for Apple and Android smart devices; works with Amazon Alexa; works with Google Assistant.
  • Refrigerant leakage detection ensures your system remains operating efficiently without degradation due to undetected corrosion.
  • Control your MRCOOL DIY anywhere, on your Android or Apple smart device, with the new MRCOOL Remote app.
  • MRCOOL DIY temperature compensation technology help keeps you comfortable in any weather conditions.
  • Low ambient cooling: cooling down to 5°F - this feature makes the MRCOOL DIY the ideal system for computer server rooms, greenhouses, and any other application that requires cooling all year.
  • Gold fin condenser: corrosion resistant, condenser is built to resist long term corrosion.

Editor's Notes

Written by persian_mafia | Staff
  • About this deal:
    • This matches the previous Frontpage Deal from several days ago.
    • Our research indicates that MRCOOL DIY 18K BTU Mini-Split Air Conditioner and Heat Pump with Wi-Fi Smart Controller is $268.01 less (~17% Savings) than the next best price from a reputable merchant with prices starting from $1568 at the time of this posting.
  • About this product:
    • Includes 7-year compressor warranty and 5-year parts warranty.
    • Will be Delivered in Two Boxes.
  • About this store:
    • To view the Costco return policy click here. -Corwin

Original Post

Written by Fourgonbound
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for their Members: MRCOOL DIY 18K BTU Mini-Split Air Conditioner and Heat Pump with Wi-Fi Smart Controller (DIY-18-HP-230AE) on sale for $1299.99. Shipping is free.

Thanks community member Fourgonbound for sharing this deal

Note, you must be a Costco Member and signed into your account to view sale pricing and purchase at sale price. Refer to the forum thread for additional deal ideas and discussion.

Key Features:
  • The MRCOOL DIY series comes with pre-charged line sets alleviating one major obstacle to amateur installation in a single stroke.
  • Functionality for Apple and Android smart devices; works with Amazon Alexa; works with Google Assistant.
  • Refrigerant leakage detection ensures your system remains operating efficiently without degradation due to undetected corrosion.
  • Control your MRCOOL DIY anywhere, on your Android or Apple smart device, with the new MRCOOL Remote app.
  • MRCOOL DIY temperature compensation technology help keeps you comfortable in any weather conditions.
  • Low ambient cooling: cooling down to 5°F - this feature makes the MRCOOL DIY the ideal system for computer server rooms, greenhouses, and any other application that requires cooling all year.
  • Gold fin condenser: corrosion resistant, condenser is built to resist long term corrosion.

Editor's Notes

Written by persian_mafia | Staff
  • About this deal:
    • This matches the previous Frontpage Deal from several days ago.
    • Our research indicates that MRCOOL DIY 18K BTU Mini-Split Air Conditioner and Heat Pump with Wi-Fi Smart Controller is $268.01 less (~17% Savings) than the next best price from a reputable merchant with prices starting from $1568 at the time of this posting.
  • About this product:
    • Includes 7-year compressor warranty and 5-year parts warranty.
    • Will be Delivered in Two Boxes.
  • About this store:
    • To view the Costco return policy click here. -Corwin

Original Post

Written by Fourgonbound

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233 Comments

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Jul 14, 2021 2:07 AM
2.2K Comments
Joined Mar 2006
nebody00Jul 14, 2021 2:07 AM
2.2K Comments
Quote from mikeworkman01 View quoted comment :
Do you have any issues with humidity not being removed by the more powerful unit?
Nope. I have a raised ceiling in the room with the mini split along with humidity/temperature sensors. Don't have issues with humidity.
Jul 14, 2021 2:15 AM
301 Comments
Joined May 2008
TatersaladJul 14, 2021 2:15 AM
301 Comments
Quote from nebody00 View quoted comment :
Nope. I have a raised ceiling in the room with the mini split along with humidity/temperature sensors. Don't have issues with humidity.
This is not the same as a normal ac for your house, it's variable speed and has the ability to wet the coil(reduce humidity) by variable fan speeds and compressor speeds. So it's not a big deal like it would be if you had an oldschool system with out variable speeds and smart software.
Jul 14, 2021 2:27 AM
64 Comments
Joined Nov 2015
C2FJul 14, 2021 2:27 AM
64 Comments

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Quote from jtree1 View quoted comment :
You don't want to oversize an AC system. Part of what cools a room is the heat being pumped from the inside to the outside, but the other part is the humidity being removed. If you get an oversized system it won't cycle on long enough to remove the humidity so you will end up putting the temperature lower than you really need just to get the system to turn on longer so it will remove the humidity. For a 1-story structure you can get 700 SqFt per 1 ton. I do not see the tonnage of these units so you may need to contact them to find out. The heating is measured in BTUs.
1) Mini split systems can be oversized. It will not affect humidity removal like it does with standard on/off single stage compressor systems.

A 18,000 btu mini split I installed can perform a minimum of 5,400 BTU's.
I'm not saying install a 18k system where a 6K is needed, but installing a 18k system where you need 12K will not cause you to have high humidity.

2) 700sq feet per ton should not be used for everyone. Region and building design determine cooling and heading load. Parts of Michigan with great insulation may only need 1 ton per 1,000 sq ft. An area of Texas with bad insulation may need 1 ton per 300- 350 sq feet.

3) You must also factor in heating performance in your region and unit specifications. A 12,000 BTU cooling unit may get 16,000 BTU of heat at 47F, however it may drop to 8,000 BTU at 5F.
4
1
Jul 14, 2021 5:31 AM
25 Comments
Joined Mar 2021
MaroonStar4153Jul 14, 2021 5:31 AM
25 Comments
Mrcool 24k vs Ductlessaire 24k from home depot? They are basically the same price. The home depot one has 1k reviews at nearly 5 stars, whereas the costco one is at 4.4 stars with only 196 reviews.

They are both precharged, which is good since I will do most of the install myself.
1
Jul 14, 2021 7:13 AM
495 Comments
Joined Mar 2005
calxtremeJul 14, 2021 7:13 AM
495 Comments
Quote from MaroonStar4153 View quoted comment :
Mrcool 24k vs Ductlessaire 24k from home depot? They are basically the same price. The home depot one has 1k reviews at nearly 5 stars, whereas the costco one is at 4.4 stars with only 196 reviews.

They are both precharged, which is good since I will do most of the install myself.
They are both precharged at the condenser but only the MrCool DIY has the precharged lineset that does not require you to pull a vacuum.
Jul 14, 2021 7:00 PM
3 Comments
Joined Jul 2019
ShailainPJul 14, 2021 7:00 PM
3 Comments
Quote from mikeworkman01 View quoted comment :
I'm looking to put one in a 660 square ft garage with 9.5ft ceiling. Would the 24k be overkill? I like the idea of the stronger unit to help bring the temp back to normal after a garage door is opened to bring a car in/out. What do you all think?
Depends on windows and sun exposure too. I got a 650 sq ft Cali room with 10 ft ceilings but a lot of sun exposure from large glass sliders so 24k made sense for me
Jul 14, 2021 7:02 PM
3.7K Comments
Joined Dec 2011

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Jul 14, 2021 7:06 PM
676 Comments
Joined May 2015
TL88Jul 14, 2021 7:06 PM
676 Comments
Quote from mikeworkman01 View quoted comment :
I'm looking to put one in a 660 square ft garage with 9.5ft ceiling. Would the 24k be overkill? I like the idea of the stronger unit to help bring the temp back to normal after a garage door is opened to bring a car in/out. What do you all think?
Yes, it's probably more than you need.

Things to consider: Is it humid where you are? If yes, oversized will leave more humidity as it runs for shorter times to cool.

How often will you use it? If it's very often, you'll beat it up faster if it's oversized (it will turn on/off a lot more than an appropriately sized unit). If it's just rare/occasional usage, it won't matter nearly as much. Still will have more wear and tear overall, just less of a concern than running 100+ hours per week.

So - if it's a dry climate and only occasional use. Go for the 24k if you want. If it's humid or you plan on leaving it on a lot, then I'd size appropriately.
5
Jul 14, 2021 7:07 PM
676 Comments
Joined May 2015
TL88Jul 14, 2021 7:07 PM
676 Comments
Quote from cantstoplooking View quoted comment :
FYI, mini splits are between $500-800 if you buy it during cooler months. You're just paying double for the summer premium at this point.
Not the DIY versions. This is a very good price anytime. Not even the smallest (12k) DIY unit has ever been $800.
Jul 14, 2021 7:12 PM
82 Comments
Joined Jul 2010
tiedJul 14, 2021 7:12 PM
82 Comments
Quote from Fourgonbound View quoted comment :
24k is overkill IMO, 18k is perfect and my garage is 550sqft with 8' ceilings and would love to get the 12k one...
Be careful with sizing. I have the MrCool (non DIY) unit which is the same compressor and setup in a 700 sq ft garage and I have terrible trouble with the unit freezing up. The HVAC techs have been out many times and it is not refrigerant level related.

After a few months of summer, what I've found is that it's really an airflow problem. I have to leave the unit fan speed on High all the time or eventually I'll experience a freeze up. I don't know if this is because I used a 24K unit and it's slightly oversized for the space or not, but just wanted to put my experience out there.

It seems like the compressor can't go low enough when airspeed falls to keep itself from freezing the coil.
Jul 14, 2021 7:15 PM
676 Comments
Joined May 2015
TL88Jul 14, 2021 7:15 PM
676 Comments
Quote from C2F View quoted comment :
1) Mini split systems can be oversized. It will not affect humidity removal like it does with standard on/off single stage compressor systems.

A 18,000 btu mini split I installed can perform a minimum of 5,400 BTU's.
I'm not saying install a 18k system where a 6K is needed, but installing a 18k system where you need 12K will not cause you to have high humidity.
This is very location and usage specific. Location being both in terms of region and room in house. A garage, sunroom, or FROG are going to generally have a lot more airgaps and more humidity. These rooms also might not see the mini-split turned on for days at a time, and hit humidity levels nearing outside.

I downsized from an 18k to a 12k when the 18k broke. I live in an area where the annual average daily humidity is 92% - much of the south and southeast is similar. My 550sqft FROG constantly had humidity levels 65-70% with the 18k, now with the 12k it's a much more comfortable 50-55%.

The 18k just wouldn't run enough in that space for how humid it got when it wasn't running.
Jul 14, 2021 7:37 PM
2 Comments
Joined Aug 2014
langnrJul 14, 2021 7:37 PM
2 Comments
I have the 24K for the upstairs bedrooms and it works GREAT. This is an awesome price... I got mine at Home Depot a year ago and paid nearly double.
Jul 14, 2021 7:52 PM
5 Comments
Joined Sep 2011
DastereoJul 14, 2021 7:52 PM
5 Comments

Our community has rated this post as helpful. If you agree, why not thank

It's a decent deal, but if you want an even better deal you can buy the 18k with a scratched/dented condenser for $1050 on iwae.com Just search "mrcool diy s&d" for a full list.
1
Jul 14, 2021 7:59 PM
884 Comments
Joined Jul 2007
nycabJul 14, 2021 7:59 PM
884 Comments
Quote from Fourgonbound View quoted comment :
The overstock one isn't a DIY one so you'll have to hire (most likely) an HVAC technician to put some refrigerant in the line.
Or put it in yourself
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Jul 14, 2021 8:14 PM
45 Comments
Joined Dec 2003

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