Off Grid Air Conditioning! MrCool Full Install And Solar Load Test!
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- Опубликовано: 24 сен 2022
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Хобби
I had 4 split units installed several years back and they do a great job cooling and heating - Mitsubishi units. Unfortunately, they mold terribly. I've taken the units apart, removed the squirrel cage and cleaned it and the fins 2-3 times per year. In between cleanings, I've learned to keep the drains from clogging via a weekly dose of vinegar that I pour directly into the drain pan inside the unit, otherwise the drain line will form a slimy clog and the units will overflow their drain pans and make a heck of a mess. I also rubber band a small piece of insect screen over the end of the outside drain hose, or else spiders and other insects will make their home inside. The vinegar seems to keep the mesh from clogging, but I still take it off and inspect/clean it from time to time. Recently I noticed the condenser fins were becoming clogged with mildew, so after watching several videos I bought a low-pressure portable pressure washer that allows me to draw a warm vinegar solution from a bucket and wash the mildew out. You have to have a plastic "shroud" that goes around the unit that drains into another bucket for obvious reasons. Just letting all you folks know what you have to look forward too. While I'm glad that I don't have dusty plenums/trunks and their nastiness blowing into the house, I despise the mildewing nature and maintenance requirements of these splits. For my future retirement home energy costs and maintenance requirements are a huge consideration. I'm exploring earth-bermed, passive solar heating designs and no ac system. Winter heat will be provided by multifuel stoves (wood/gas).
Thank you for your thoughts and suggestions.
I learned from an apartment maintenance guy before. A simple solution to mold problems is a spray of diluted hydrogen peroxide to trays and water lines. It works wonders in the bathtub corners as well. But if the drain from the evaporator is directed to drip into the plants outside, there's a chance the plants may die from the peroxide.
Thank you. Question, do you know if this is isolated to Mitsubishi units or all mini splits have a similar problem. Also, if there's mildew in the coils and drain line are you breathing in mold of you didn't do this?
Ive been shopping for these- great timing. Your videos on growatt installation were super helpful. I have a very similar system that I just got up and running
Very cool. Good luck with your install. We love it so far.
I've done two installations of these Mr. Cool DIY units and you can't beat the performance and price. Both were in my shop, and the difference in comfort level makes working there much more enjoyable.
Awesome. I have noticed a huge difference so far in our home after just a few days.
I installed the same unit this summer. Really a lot easier then I thought it would be. The sticky pads that came with it are meant to be applied at the coupling between the line sets.
Cool
All I can say is,wow!!! I am sure there are other “infinite number of variables”, that anyone…anywhere could run into, but…I think that your particularly presented scenario would most likely cover a good majority of those….and then…from there…most people could figure out a go forwards from that point…and extrapolate whatever their own particulars are from there…to completion. 😮 Yeah…IDK for sure of course, even for our particular circumstance, HOWEVER….This video, (ThankYou Very Much), has already given us the understanding we need to know whether we have the skills to attempt this as a DIY or to look into other options! Honestly, Just knowing that puts us ahead of a learning curve that no one wants in this particular environment!!!! We are extremely grateful to you Sir!
I spent $ about 4 year’s ago on a new HVAC system as my ducks were way too small and I improved my bedroom over the garage. But now I see the value in this for doing the bedroom for a better balance on the temp. Thanks for your posting today.
You're welcome
Once again, he nailed it. I’m doing this next spring 👍🏽😊
Thanks so much
You make it look so easy, I wish it was really a 16 minute job. :) Nice work
Thank you Paul. It can be done in one day for sure. About 7 hours (or less) if you have everything in place at the start.
Video editing is great ;-)
thank you very much, I've been thinking about solar powered cooling system and you did it! in 120v, awesome and keep rolling!
Glad we could help!
I installed a 24K Mr cool DIY 3 years ago and its works great. We started getting blower noise a few months ago so it may need a new motor soon but from all the videos I have seen replacing the motor is a small job. We recently installed 2 EG46500es split phase and it powers the Mr cool very well. It draws 2KW but when it reaches 1 degree of target temperature it drops to 1KW. Thanks for your videos I love you channel.
Awesome! Thanks for sharing your experience with them.
We need a new HVAC system but have been putting it off due to the cost. Would love to replace my central system with a couple of these MrCool units. You and Pete B. about have me convinced this is going to be a really good alternative. These units look to be pretty DIY friendly... which would save me a ton of money. Thanks for sharing - I enjoyed it! 🤠
Awesome! So glad we could help. I know you can do it. These are very DIY friendly for sure.
Excellent video, thank you.
You're welcome!
Great tutorial ty
Thanks. Glad it was helpful.
Eric, after watching about a jillion of these installation videos, I got to hand it to you!
You were the FIRST to use the common sense approach of a jobber length bit to set your angle completely through the wall and also the first to use the reverse attack on the drywall paper to push the debris in. It gives you a cleaner hole.
In my case, my quad-zone mini split was NOT a DIY so I had to get the tools to evacuate the system. But, on the plus side, I can custom the length of my line set so I don't have a big spool hiding behind the condenser.
Thank you. Hopefully those tips will help some first-timers out there.
How much did all of the tools for your non-diy system cost?
@@CountryLivingExperience The system itself with the four air handlers and 25' of line sets each was about $3600 and then the tooling cost about $360 so the entire system ran $3960. The killer is my time in routing the lines as they will be going down in the walls and through the narrow crawlspace.
That is not too bad of a price.
Good luck in that crawlspace.
@@CountryLivingExperience Hi Eric, wanted to give you a heads up; the system is in and working well.
The biggest problem was cutting the factory flares that were scarred off and creating new smooth flares; Nyloc Blue was a lifesaver!
I cut 2" rings from 3" PVC DWV, used a router to put a taper in the inside edges, drilled a hole in one side, and screwed them to the floor joists to support the lineset runs.
Bending was easier by hand but kept moving the pivot hand to spread the stress of the bends over a wider area to avoid kinks.
Can barely hear the units run!
Thanks again for inspiring me!
@@Digidoc316 That's awesome. Nice work!
You live in the land of stable earth, but in the western US a simple 8"x12" post hole mechanically connected to the AC as a minimum. Most locations do not allow paving cement blocks. You can always use a reinforced designed pad and some elevation is helpful to keep it out of snow, hail, or heavy rain. It's been found earthquakes or high wind can crack an unreforced paving block set in loose rock due to tipping pressure. This was first noticed in areas in the mid west experiencing small quakes from gas recovery when units were set on cement paving blocks in loose soil.
Great. I do live in a stable area.
great video
Thank you
Thanks!
Thank you!
Thanks 👍
No problem
Thanks for the vid and my wife and I love the channel! So if you have to install additional units for other rooms, I assume you have to put down additional pads around your house where necessary (unless the lines are long enough from the first pad site)?
Thank you so much. Yes, if the lines are long enough, you’ll only need one pad. You need to keep the correct spacing so the pad may get fairly big if you have a lot of units.
9.29.22
Very good instructional video Eric. Thanks for taking the time to make it. I am thinking about the 120v 12,000btu unit myself. Question: what about mold build up? Will this unit have mold? Does Mr Cool say anything about mold build up? Did you use 12-gauge wire and a 20amp breaker?
Thanks.
I have heard that mold may become an issue only if it is improperly drained. That said, I have also heard that an inspection every 6 months and cleaning with vinegar water is appropriate.
Yes, I used 12awg on a 20A breaker.
Hey buddy I just wanna say thanks to u my mini split is running right now 9:48pm on my solar system and man this thing is hot! It's so hot in here the outside unit turned off I'm only pulling 63 watts from the inside unit I'm guessing mines is the Senville 12000 btu 120v the most power draw I've seen today was 1100 watts..
That is awesome! Congrats
Every time I ask a question I see the answer in your video 😂 I'm sorry and I do appreciate your response ..
No problem
Thank you for the video.
How many units do you have in your house? Do you have separate units in each room or quad or more zone system?
Our house is old and not an open concept, just many small rooms and areas, so choosing ac system is tough.
You're welcome.
I have 3 units (one is a double head unit). I have one in the main space, one in the master suite, and the other unit serves the two remaining bedrooms.
I found a great deal on Mr Cool from an authorized seller they sell brand new scratch and dent Mr Cool heat pumps complete in the box with everything and they sell the air handlers can get both with delivery for less than about $600
Wow, that sounds like a great deal. Hopefully it is true and you get a quality product.
how is the power draw to heat?
A superb presentation, very diy friendly style that is easy to follow. Liked & subscribed!
It would be great to hear about heating mode in the dead of winter when your solar electric system will drop to its lowest daily power output levels.
What is the Mr. Cool power draw curve to keep a room at least 68F all day with a 62F night time sleep mode. (This would give anyone thinking about a tiny house the data they need to decide if a Mr. Cool will work for them off grid, as well as help those with a larger house size their solar array for winter heating several rooms.)
Thank you.
In an amazing coincidence, I am going live with a video tomorrow morning at 7am on the heating of these units. I used this frigid storm that rolled through as the test.
Mr cool is awesome. Have extra 410A, you will need it. They leak. The running joke in my HVAC classes.
ok
Thanks for the video. For my future off grid project I am considering minisplits. One thing I am concerned about is how well the air from the unit will travel through doorways and hallways. For instance consider the configuration where you have a master bedroom; then a doorway to the master bath; then from the master bath to a walk-in closet. Given a unit large enough for the square footage of those 3 sections, would the air travel to all 3 areas?
You're welcome.
It is all going hinge on house design and room location. It gets around corners and through doorways quite well but it is never going to be the same exact temp in each room. There may be a 2 to 3 degree difference. Unless you put a head unit in each room it will differ but not by much.
I'm pretty sure the outside condenser has the freon in it. The line sets are just vacuumed with a vacuum pump.
mr cool has the freon in the line set. i have only used pioneer and they have the freon in the outside unit. you can pull the freon back to the unit and reuse it too with those, if you have to move it. no clue how you would do it with mr cool. mr cool does not need a vacuum pump for install either
I have solar at my house. I have a little extra for cloudy days. If set to max on a very hot day, how much current or how many watts does this consume? I want to know if I need to add more panels or if my existing system will handle it. I understand it runs off 120VAC@60 Hz.
That depends on a lot of factors.....your home's insulation, air tightness, square footage, how low of a temp you set it at, etc. I could not calculate that for you. I would buy an energy monitor for your main panel. We use an Emporia Vue which we did a video on here: ruclips.net/video/Wwlk4i98k34/видео.html There are some models that are 120 and some that are 240.
Can you make a video of how you wired the unit to the inventory? And if your inventory bank was empty would it switch to grid automatically? Or would the solar bank not run out with how little watts it draws
I am not sure what you mean by inventory. Batteries?
I have an off-grid system so there is no switching to grid.
I want one on my boat.
Great video Question. Do you have a DIY Video on how to do the electrical ?
I did the electrical connections on the unit. If you mean connecting to the main panel on a breaker, no I don't. It is just a standard breaker addition in your main panel and a disconnect switch outdoors near the unit.
What do you mean by precharged lines the refrigerant is charged up in the lines under pressure or something I'm confused about that.
The lines are pre-vacuumed and the refrigerant is contained within the outdoor unit. No need to call a HVAC tech to vacuum (charge) the lineset.
Can you tell me what the solar demand has been on the system fro the Mr Cool
?
Our inverters handle them perfectly. Not sure what numbers you are looking for. I can say that in the last 24 hours they have pulled 15kW in total. It is 100 degrees F here right now.
You say use two and three quarter inch anchors by 3/8 but what size drill bit did you use for that I'll be installing mines soon
3/8"
@@CountryLivingExperience Ok thank when I finally do get mines up and running I'll post a video.
Is the Mr. Cool more efficient than a regular window unit?
Yes, way more efficient.
I just want to know how many batteries and panels are required to continuously run your Mr Cool.
There are so many factors that will affect the answer. How big is the space? How well is it insulated? Where do you live? What time of year and how much sun do you have? Are you using the heating or cooling function on the Mr.Cool? etc.
Hi
You can work all your inductive load with inverter normally no problem?
Yes. No problems at all.
When ur mini splits reach the set temperature like today for instance the power driver goes down once they reach the set temperature mines will be here tomorrow those numbers u mentioned on the power draw sounds great as low as 250 watts ?
Not sure what your exact question is brother. Can you restate it please?
@@CountryLivingExperience Oh ok sorry I was asking once ur mini split reach ur desired temperature what average power draw do u see coming from them
@@CountryLivingExperience I think you already answered the question for me like you were saying around 250 watts I'm just getting old and forgetful sorry
No worries. When they are in standby mode (not heating or cooling) they draw only a few watts. They when they are heating, they draw between 250 to 1kw depending on the size of the unit.
@@CountryLivingExperience Ok thank you for helping me understand how they run
I have a question can the MrCool DIY version take the regular line set instead of the high priced precharged line set someone is offering me a MrCool DIY 24000 btu but the lines were cut can I use regular l
I think you can use regular lines and vacuum them.
@CountryLivingExperience because he giving a sweet deal but I have to run up to Michigan to pick it up its gonna be a project just something to do but 24,000 btu that's gonna be pushing it on my solar system
@@diysolaradventures7894 Cool
Was this a different split than what you were going to install in the other video?
Yes. I had a problem with the other one initially and never posted the video. I got the problem worked out but now there is no need to post the footage from the old one.
Hey buddy what's up I got my mini split today it came with a 16ft line set if I add a 25ft line set do I have to add more 4-10 refrigerant or will it be fine with out the need to add more ?
Hey dude. Glad you got the equipment.
Each owners manual will tell you how long your lineset can be in total for the unit you purchased. You will have to look and see. A 16ft and a 25ft together should be perfectly fine but double check in the literature they sent you.
The refrigerant is stored in the outdoor unit, not in the lines. MrCool lines are pre-vacuumed. They don't have refrigerant inside of them.
@@CountryLivingExperience Oh ok one more important question I noticed most mini split heat pumps have two separate amp ratings one for the heating side one for the cooling side my heat pump only has one amp rating when I look at the sticker of 14.5 amps does that mean that the cooling is around 7 amps and that the heating is around 7 amps giving me that 14 amps ? Because that's all I see..
@@diysolaradventures7894 No. That should be the most amperage it draws. Check online if it is not in the paperwork.
@@CountryLivingExperience online it say 10.5 but but it's one letter off from my complete model number I can't find my exact model number mines is the Senville Model SENL/12CD/OY The only one I'm finding is the SENL/12CD/Y witch has two seperate rating of around 10.amps 1100 watts 1100 watts mines don't just 14.5 amps
How much square feet would that unit cover?
Roughly 600
A year later, how is that system on noise? Still reliable?
Still perfectly quiet and very reliable. No issues at all.
Where did you buy yours here in E-TX?
I ordered it from Lowes. Free shipping
Now can you run that unit all night long? Also how big of a space or how many floors would that 12k unit be able to cool to let’s say 68F?
I can. I run 4 units all night. The 12k is only good for 800sf but I find that it handles 1000sf with no problem. These are meant for single space.
I found a brand new single zone Senville 12000 btu mini split for $400 bucks on eBay can a 2nd indoor air handler be used on a single zone unit ?
No. The outdoor unit must be configured for multi-zone.
@@CountryLivingExperience oh okay I thought it was a single song with two head units I may have missed understood what I was looking at..
What about heat? I'd be interested to see how much power this draws when running the heat, rather than AC.
These heat down to -20°f. They are a heat pump design.
Waitu have two separate Mr Cool heat pumps or one with two air handlers ?
I have 4 total on my house. 1 - 9k btu Innovair, 1 - 12k btu MrCool, and 1 - 18k btu MrCool with 2 - 9k btu air handlers.
@@CountryLivingExperience ohh ok the one with the two air handlers is that a single zone heat pump with a split line or something with two separate power lines too
Single outdoor unit. 2 power cables to the indoor units. 2 sets of refrigerant lines. 1 - 10 gauge power cable coming to the outdoor unit.
@@CountryLivingExperience oh ok sweet I'm going to get me a Mr Cool Advantage 12,000 BTU 120 volt but it won't be DIY I'll have to create a vacuum myself but they look easy to install
@@CountryLivingExperience Man Your videos are excellent. But one question. I am also installing 13K solar with 2 EG4 inverters. My question, after installing 4 units in total aren't you close to drawing the same amps as you were with your 3 ton system? Just curious. Thanks
Just wondering on ur 12000 btu what's the most amount of DC amps have u noticed or seen ??
My emporia only shows me amp hours. I divided it by 24 hours and the most it may be is 6.45A
@@CountryLivingExperience when u look on ur EG4 inverters reading the watts or power draw it doesn't show u the amps it's using while ur mini splits are running ?
No. There is no way to tell by looking at the inverters because it it the total load of the house. There is no way to individually see a particular circuit or appliance.
@@CountryLivingExperience ohh ok
Go Green.
Go White!
Are they EMP proof?
No but you can put emp protection on your house.
Hi Eric, love your videos! I sent you an email about a week ago, I hope you’ll have a chance to see it. Thanks.
Hello and thank you. I have not seen your email or it went to my spam folder. Please resend.
@@CountryLivingExperience Just resent :). Thank you!