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expiredNickFab posted Oct 24, 2021 03:04 PM
expiredNickFab posted Oct 24, 2021 03:04 PM

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

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$1,300

$1,629

20% off
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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 NickFab for finding this deal.

Note, you must be a Costco Member and signed into your account to view sale pricing and purchase at sale price.

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 CChoiVA
  • About this deal:
  • About this product:
    • Rated 4.6 stars out of 5 overall based on 200+ reviews on Costco Wholesale
    • Includes 7-year compressor warranty and 5-year parts warranty.
    • Will be Delivered in Two Boxes.
  • About this store:
    • Costco Wholesale return policy may be found here

Original Post

Written by NickFab
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 NickFab for finding this deal.

Note, you must be a Costco Member and signed into your account to view sale pricing and purchase at sale price.

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 CChoiVA
  • About this deal:
  • About this product:
    • Rated 4.6 stars out of 5 overall based on 200+ reviews on Costco Wholesale
    • Includes 7-year compressor warranty and 5-year parts warranty.
    • Will be Delivered in Two Boxes.
  • About this store:
    • Costco Wholesale return policy may be found here

Original Post

Written by NickFab

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Top Comments

Rhizzlebop
1960 Posts
180 Reputation
Being an HVAC engineer expert and run my own business offering design services, this thread was fun and hilarious to read.

Guys, heatpumps take heat from outside to inside, or from inside to outside. They MOVE heat, aka they pump the heat. Hence Heatpump.

Nextt, Fog would not prevent this from working. Would probably transfer heat better due to higher humidity, but ultimately might decay the coil if a coastal region.

These units are fine, and I recently got one for my buddy to install for himself. However, eventually these linesets, not being brazed in will leak. Probably a few years down the road if done right, but they leak very slowly. A brazed connection is essentially metal melting the connection point closed off so no leaks if done right.

Next, if you oversize these, they wont dehumidify because when they slo down their capacity, the coil gets less cold. it takes a cold coil to dehumidify inside, so right sizing is important.

These are not meant to be data room units, and if its used in some mining operation, there should have been calculations to say that there is X amount of heat dissipation in watts from these GPus, and figure up what that load looks like and size accordingly. Of course with none of that running and 18K in a 10x12 room is WAY too big.

I actually wanna add one to my own garage but getting a power circuit run is gonna be a pain as my panel is full up, and my basement subpanel is almost full as well.
maveriq
502 Posts
890 Reputation
I have this, works well in my garage. I paid $1100 in May 2019. Yikes at current pricing.
Sinjin28
293 Posts
69 Reputation
I installed the 24k unit last time this went on sale. The whole unit was very well put together, with clear and concise directions. Because I ran it from inside a room, through a garage, and to the outside I had to buy some small things like another wall sleeve, straps to hold the lines, a finishing gutter cover and a wall mount for outside.

I think my install was quite a bit more involved than a lot of installs would normally be since I had to core through brick and run new conduit from my panel. For the most part the kit will have most, if not all of what you need. Check both boxes you get for damages, I got a unit from HD first that was half crushed, the unit I got from Costco had the fan cover bashed in a bit but I hammered it back out with a mallet and block. Too much trouble to return and wait for another unit to ship, and I can't see the damage now. Don't get halfway through your install and open the next box and see an issue!

Performance is great, it's very quiet and heats and cools AWESOME. I quickly got the house down to 65 degrees during the heat wave, and now use it nightly to keep the house comfortable. The air it puts out feels nice, I'm not sure how to describe it but it's different than air out of my vents from the furnace.

I'd definitely recommend these units though, definitely my favorite upgrade to my house.

137 Comments

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Oct 27, 2021 01:48 PM
8 Posts
Joined Jul 2005
Oct 27, 2021 01:48 PM
ds61761Oct 27, 2021 01:48 PM
8 Posts
We bought one of these (18k unit) and installed it back in March. We have central AC but wanted to cool an upstairs bedroom without cooling the whole house. We love it! The installation was surprisingly easy. I spent the most time putting together the lineset cover (bought from Amazon) to make it look nice. I had called a few HVAC contractors and they wanted $5-6k to install a mini-split system for us. One just flat-out refused to do it! So we probably saved around $3-4k by doing it ourselves. After doing this I can understand why these units are so popular overseas. You see them all over the place in other countries, but they seem to be rare here stateside.
Oct 27, 2021 02:31 PM
227 Posts
Joined Mar 2016
Oct 27, 2021 02:31 PM
MatermineOct 27, 2021 02:31 PM
227 Posts
I got an 18K MRCOOL Advantage (not DIY) open box for about $500. Easily one of the best purchases I've made for my house. With our master bedroom being on the second floor, it gets hot easily and does not cool down quickly with central AC. Mini-split will have the room <70 in less than 15 minutes. Absolutely fantastic.

We ran it all night in the summer (Northern Utah, it was >95 most of this summer) and it cost less than a dollar per day to keep our room at 69 (nice). I installed everything myself besides evacuating the lines (mostly because to get the $600 rebate, had to be "installed" by licensed tech). Honestly, the electrical is the easiest part. People are taught to be deathly afraid of electricity, but honestly, if you have a basic understanding, it's not scary or hard. Minimize any work near "hot" lines. Literally every part of this can be wired without ANY risk until you connect it to your breaker box....and that's just sliding a breaker onto the bus, which is completely safe if it's a secondary box and it's turned off at the main. Even if it is your main (like it was mine), you have the breaker between you and the hot bus the whole time.

Idk, electrical is probably the easiest part of the install. Most dangerous, I guess, but it's just connecting wires.

If you're on the fence about getting a mini-split, just do it. You won't regret it. Honestly I'm considering adding two more and just forgetting the central AC. Kinda wish I had done that the first go around and have one outdoor unit, but hindsight is 50/50

Honestly a tl;dr of the install if you're wondering is:

Cut hole in exterior wall
Mount wall plate
Connect tubing and wiring to indoor unit
Feed wiring and tubing through hole (couple screw terminals and wrench turns)
Mount indoor unit on wall
Place outdoor unit on flat surface
Connect wiring and tubing to outdoor unit (couple screw terminals and wrench turns)
Connect wiring from outdoor unit to breaker box (or sub-box and then to breaker box if required by local law, also recommended)
Last edited by Matermine October 27, 2021 at 07:44 AM.
Oct 27, 2021 02:37 PM
61 Posts
Joined Jan 2017
Oct 27, 2021 02:37 PM
kevinpfeifferOct 27, 2021 02:37 PM
61 Posts
Quote from maveriq :
I have this, works well in my garage. I paid $1100 in May 2019. Yikes at current pricing.
35% of all US dolllars in history were printed in 2020, this is only gonna get worse.
1
Oct 27, 2021 02:39 PM
58 Posts
Joined Jan 2014
Oct 27, 2021 02:39 PM
TightpapaOct 27, 2021 02:39 PM
58 Posts
What is their price on the 9,000 btu 115v mini? I am not a member and can't seem to get on their site.
Oct 27, 2021 02:40 PM
1,045 Posts
Joined Jul 2003
Oct 27, 2021 02:40 PM
grnealOct 27, 2021 02:40 PM
1,045 Posts
Quote from omegaroach :
Purchased and installed this 18K in my 800+ sqft 4 car garage in Houston and it works well, great unit, 24K would have worked a bit better.

Did the install myself sans the electric, which I had an electrician to install. Mounted inside unit and ran line set 12 feet over, 6 feet down, and through a sheet rock and brick wall. Ordered a pvc lineset cover set from Amazon to conceal the line set and drain line. Ordered a Mr cool wall mount for the outside unit and that made that part fairly easy.

The unit came with a remote control, a wall thermostat, and a wifi dongle/mobile app. I don't understand what the wall thermostat is for though. With the dongle it works with Smartthings which is GREAT. Also works with Alexa. I can say Alexa turn on garage AC and it's on.
Is your garage insulated? all the walls and are your garage doors insulated? Thanks!
Oct 27, 2021 02:41 PM
227 Posts
Joined Mar 2016
Oct 27, 2021 02:41 PM
MatermineOct 27, 2021 02:41 PM
227 Posts
Quote from tightpapa :
what is their price on the 9,000 btu 115v mini? I am not a member and can't seem to get on their site.
$1,099.99
Oct 27, 2021 04:24 PM
698 Posts
Joined Nov 2011
Oct 27, 2021 04:24 PM
jawshoeawOct 27, 2021 04:24 PM
698 Posts
Quote from racebum :
This looks like it would be one of the greatest things in the world for a shop or an adu
ADU depending on layout would benefit from two zone version. I'm building one now and on the fence. About 600 sq ft ... if it was all one big room I'd say sure, single unit, but it's a separate bedroom. Wish these had the option to go dual zone

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Oct 27, 2021 04:36 PM
1,895 Posts
Joined Nov 2010
Oct 27, 2021 04:36 PM
speed_demonOct 27, 2021 04:36 PM
1,895 Posts
tempting for the separate garage
Oct 27, 2021 04:37 PM
1,960 Posts
Joined Nov 2007
Oct 27, 2021 04:37 PM
RhizzlebopOct 27, 2021 04:37 PM
1,960 Posts
Quote from RyanL :
IDK, I kind of agree somewhat with the other guy in that some sort of compression or flare-ended fitting can be almost just as good. Take a vehicle for example, I've had factory charges last 10 years for me before and there's a whole lot of extreme temp changes, things flexing, and loads of vibration too. Now I'm no fool and would prefer to have a sweated connection any day, but I'm sure that what they use probably holds freon for plenty long enough. And BTW, not sure why you're throwing out crazy numbers like 400psi. Nothing comes remotely close to that in a home HVAC system. Probably like 10 times less than that.
All good sir, but R410 definately gets close to 400 PSI on the high side on a hot day. Older R22 stuff would stay around 180 PSI on the high side.

See this chart.
https://www.bpa.gov/EE/Sectors/Re..._Chart.pdf
Oct 27, 2021 04:47 PM
5,358 Posts
Joined Sep 2016
Oct 27, 2021 04:47 PM
anonymous2929239Oct 27, 2021 04:47 PM
5,358 Posts
Quote from grneal :
Is your garage insulated? all the walls and are your garage doors insulated? Thanks!
I do insulation, and I insulated my garage and I cellulose packed all exterior walls and attic. I dont have climate control in there, but in winter since has 2 shared walls with house, it stays about 60* at lowest, when outside is 0* keeps liquids from freezing, and in summer, if its 100 out, it stays like 70* til I open garage door. Its worth it.

In winter if I want to do a project, I turn on my little ceramic oil space heater overnight, next day its comfortable enough.

im installing a little mining laptop in there, lol im curious how warm it will make the garage running 24/7. a profitable space heater!
Oct 27, 2021 04:50 PM
450 Posts
Joined Nov 2005
Oct 27, 2021 04:50 PM
GaelOct 27, 2021 04:50 PM
450 Posts
I wish Costco would sell a dual zone. I want to do a dual zone for my office and for our garage. Our office with 2 gaming desktops and a lot of monitors is at least 5-10 degrees hotter than the rest of the house, and I'd love to get AC in the garage during the summer.. they'd both get pretty minimal use as a whole.
Oct 27, 2021 05:14 PM
570 Posts
Joined Nov 2009
Oct 27, 2021 05:14 PM
jroth3Oct 27, 2021 05:14 PM
570 Posts
Quote from Sisyphean :
Not a DIY kit with precharged lines.
Thank you ! I'm researching one for my guest room
Oct 27, 2021 05:17 PM
181 Posts
Joined May 2018
Oct 27, 2021 05:17 PM
OrangeMustang158Oct 27, 2021 05:17 PM
181 Posts
Q1. Would this work in desert hot springs mobile home about 700 sq ft with temp over 100-100+?
Q2. If the unit had ducts in them, is it easier to attach or do you have to use ductless output system?
Q3. Do you set up everything and then ask the electrician to connect the power or would they install everything?

Sorry for so many questions and thanks in advance if you answer Smilie
Oct 27, 2021 06:18 PM
29 Posts
Joined Jun 2015
Oct 27, 2021 06:18 PM
madkapitolistOct 27, 2021 06:18 PM
29 Posts
Can I replace my existing hvac unit with this? My current unit is connected to the house's central air ducts

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Oct 27, 2021 06:33 PM
30 Posts
Joined Jun 2019
Oct 27, 2021 06:33 PM
SplendidApple208Oct 27, 2021 06:33 PM
30 Posts
Quote from madkapitolist :
Can I replace my existing hvac unit with this? My current unit is connected to the house's central air ducts
No, this is a ductless unit - meaning it has a fan on the inside console that blows cold and/or warm air.
1

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