Mini Split Filters - 330
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- Опубліковано 12 жов 2019
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Love the picture of you and your daughter in the shop.
My man JAY has a WHOLE fridge in his shop. This is just the video I needed. I'm going to insulate the ceiling and garage door, then throw one of these minis in. I was concerned about dust but I see what I must do now! Absolutely genius!
For months I’ve been struggling with a design to add this concept to my mini. Thanks for a cleaner design than I had been thinking of.
I bought two washable metal filters off Amazon from a custom filter shop…..each 10x20. Taped them together and laid them on top of my mini split air filter intake. Simple. Cheap. and works. Plenty of airflow and protection.
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I love the huge pic of you and your daughter! The matching aprons are so cute! Loving the new shop too. Thanks for sharing.
Jay, I like how you use a scientific approach to your dust collection both in your old and new shops. Awesome way to clean the air, without breaking the bank!
Brandon was telling me about this , I’m glad you did a video because I don’t have any dust collection and I didn’t want to invest in the mini split and kill it with dust in a month. Glad to have some insight before i install my mini split unit.
The shop is coming along nicely!... Good work Jay!
Those Greene & Greene inspired tool boxes look great.
I laughed when you said "I live in Mississippi and it's been 2 months without rain" . .. that was so true less than a week ago. I live in Greenwood btw, I hope you're enjoying the cool weather.
Jay, thank you for the heavy level of detail in these videos about you mini-split filtration system. I am in the process of building my third shop with the luxury of a ground up build. I have discussed doing something very similar to this with both GC and HVAC guys. None of them were comfortable with it for a bunch of reasons, none of which sounded like more than FUD to me. You experience is more than enough to convince me that I had the right idea. THANK YOU! I can't tell you how much I appreciate the extra confidence.
IMO, this is an ideal air cleaning solution and will extend the life and efficiency of the mini-splits. Your air cleaner box is also a wonderfully simple solution, very similar to the filtered downdraft table I built into one of my work surfaces.
Great idea! I'd recommend using foam weather stripping as a gasket instead of tape for sealing; that will make it a little easier to take apart if needed.
That's a great idea Jay! It will work great.
I'm so glad I found this video. Many thanks.
Awesome picture of you and your daughter!
I still love your insulated roof and open ceiling and it look good too! Great idea using the mini splits to filter your air and the air going through the mini slips'.
Jay
Good morning
I would say it is actually a good thing that you put what we would call "Pre-filters" on the mini splits in the environment that they are running in. The filters will help keep the evaporator coils clean and keep them from getting plugged with dust. The trick will be to keep the filters changed regularly. As the filters get filled with dust they will cause low airflow on the evaporator. Low airflow on an evaporator is bad for a refrigeration circuit and can cause issues.
Love your channel! Keep up the good work kind sir!
That shop is nuts...what a dream it must be to have such a great setup.
With hard work there's not much you can't accomplish. It is nice in this shop and I hope it continues to improve :) Thanks for stopping by.
Dude you’re a genius, I couldn’t use these because of my asthma but this makes them usable! Thank you so much!
I love this. My work space here in Thailand gets super hot. I've been thinking about installing an Aircon but was worried about the dust damaging the unit. You are a genius.
Love your new shop!!
Thanks Jay. I had a similar thought but have not had opportunity to try it.
Thanks for the video. I also live in a hot humid climate. There are a couple of months in the year when it is just too uncomfortable to do any work - given it is just a hobby for me. One day when I can afford air con for the shed I'll do something similar to what you have done to protect the mini split units.
Thanks for sharing. I’ve been needing to do this.
Great idea Jay. I had a mini split system in my last shop. Every few weeks I would have to clean out the filter, and it would be CAKED with dust. I read somewhere that all that dust can actually damage the system over time - not sure if that's true, but I mean... I did read it on the internet.
Thank you, appreciate your time and advice.
Awesome video! I also did the same thing with the house but the other direction with the kids starting to move on in life. So, smaller house, more land and a shop that is bigger than the house. Now I have a blank slate to work with and your shop is very close to what I have, so thanks for the great ideas, even on the HVAC which I was wondering how it would work. I look forward to an update later in the middle of summer to see how the mini-splits are working.
From an HVAC an indoor air quality guy I give you a 10 out of 10 👍 without much filter face area you will have no restriction with those little mini split head.
And if you thought you had some restriction you could pull that washable filter screen off from inside the mini split head that causes more restriction than the filters that you have installed.
The mini split can also pull in dirty air from the seam mounting against the wall from the backside crack. So if you really wanted to seal up your mini split from dirty air tape around the entire mini split sealed to the wall.
By the way I use Merv 16 , 5 inch deep carbon impregnated filters
I've been considering a mini-split for the shop for a while, so this is great info. Thanks for sharing, Jay!
Cam, something similar is what I was thinking about. Now I know it should work.
Billy
Looks like it works! I think it’s a great idea Jay.
“Because the stairway will always be there...” Sorry I love your work but having just watched the elevator video, that line cracked me up. Keep on truckin’ !!
I like when your twin brother comes to help. Really speeds up the work.
Awesome idea man. That will work great.
Thanks for the amazing idea!
You’re the second person I’ve seen on UA-cam that’s added external filters to their mini split. If all goes as planned I’ll have my system installed sometime early next year (saving money for it). After it is installed I’ll look into adding some external filters too. Your video will be of great help at that time. Since I’m not sure where my AC guy plans to mount the unit I’ll have to wait before I can make plans for the filters.
Very nice shop. Congratulations!!!!!!
Good idea on the filter boxes. Yoink!
Great thanks for your videos
A greeting from Spain
Excellent video and helpful information. Go Navy!
Very cool! Nothing wrong with that experiment. That's enough air flow capacity, by a long shot... And that'll just extend the filter life! :-)
Great video, Jay!
This is a great video and smart thinking... could always add 4" filters to increase the surface area even more, esp with the upstairs unit.
Typically, air handlers, which is effectively what a mini-split head unit is, will be rated for a certain static pressure drop. You can measure that with a dual port manometer. I recently finished my HVAC system (a ducted Mitsubishi unit) and used a cheap $30 digital manometer off of ebay to verify the static pressure increase.
Regarding the power draw vs airflow... I had it backwards and I have no clue why it was stuck in my head that way. I saw Matthias' video on airflow and power draw a couple years ago and I completely had it backwards since. Dumb brain moment. Reduce the air flow and the power draw will reduce. I stand corrected. See this video for an example: ua-cam.com/video/oXd6YlCnyzQ/v-deo.html
I was going to mention this glad you got it straitened out. I see no reason why the filters would stop the units from working. You have far more filter area and less flow than what the filters are designed for.
HVAC tech here, you are totally fine doing this you have tons of filter space and the good thing about this is that it allows them to still flow more air than just one filter as they start to get dirty. I would make sure you swap them out regularly don't let them get to bad before you change them out. Your air filtration cabinet's filters are way to dirty for your mini split as an example. Oh an LS1(AW/SW) here.
FYI The air flow measuring device is called an anemometer.
New shop is looking great. Makes me miss my old 3,000sqft shop :( - Although I will say my new 700sqft shop is much easier to heat and cool - Keep the updates coming!
Loved your meticulously articulated video. You’re very careful not to make baseless claims and your logic, for me is 10/10. I subscribed because of your video and look forward to a follow up if you ave anything more to add after using it for a few years.
It DOES work! I put a filter box above my mini-split three years ago and my coils remain very clean. I simply change the filter EVERY month, using the pleated paper 3M filters. Since I change the filter monthly, I only have a single 20x25 inch filter. Air flow seems to be very good.
Have you done any CFM readings to test output before/after? I think Jay may have overkilled on four per unit but also think one *seems* low.
J D hi JD, I don’t have anything to make scientific measurements. But I figured one 20x25 filter area being 500 square inches would be fine since the mini-split inlet area is 28x8 (224 sq in). So the filter is slightly more than twice the area.
I love the photo on the wall.
Base on your design I undertook a similar project. Your first gen design was great, though I did raise the filter box up a few more inches and created a longer flange connecting it to the minisplit so all I had to remove was that when I wanted to remove the plastic cover for maintenance.
I think you will be fine with what you did. Ronald Walters did something like this back in 2017 for his minisplit. he ended up modifying it to add additional filters to increase the air flow. He did this because although he had enough air flow for the cooling/heat, he wasn't getting enough to remove the humidity. Once he added additional filters it fixed the humidity problem. So I would say watch your humidity in the shop If its good then you should be fine.
Nice creative idea 😂👍👍🙏
cool good job and screw the haters. I think it sounds logical to me increase the amount of filters and increases the amount of flow . good job
Nicely done Jay! 😃👍🏻👊🏻 ..... Perhaps try a slightly dampened towel over top of one of the internal filters (simulating a dirty filter by restricting airflow) to see if it pulls more amps? If it does, then possibly by monitoring the amperage, you'll be able to monitor the overall condition of the filters.
It makes sense.People sometimes just talk through their a$$and dont know what they are talking about.Thanks for posting this video.I have a terrible situation with dust and heat and cold in winter.Will start with the filter cart and mini split later.Too much debt right now.
Hi Jay: Great idea and execution to ensure your shop and office air is as clean as possible. When you first did the shop air filter cart it inspired me to ask my HVAC tech for some old furnace fans. He brought me three different sized fans, and the resultant cart was built so I could test which size fan worked best. Sort of "Goldie Locks and the Three Bears", and the smallest size worked best for my size shop. Thank you again for air filtration cart. I don't know if this would work or if it's feasible, but when you need to service the two shop level split units, could you add a second french cleat up higher on the wall for "temporary storage" of the filter box while you work on the unit? Following service, lower the filter box down to the permanent french cleat position. Just a thought and thank again for bringing us your inspirations and please keep up the good work.
Best - Michael
The second cleat is a good idea. Just can't do it because the wall isn't high enough and there are some wires in the way on the right side. Good idea though.
Great idea. As creative as Jay is, discussions with like minded people lead to great enhancements.
Great idea for a second french cleat I'll definitely use that idea when I'm ready to build mine.
Looks great just make sure you obviously keep the filters from getting too dirty since that will affect the airflow to the indoor coil which in return will affect the condensor causing it to run harder because refrigerant pressures will change.
Moving more air takes more amps, restricting air flow decreases amps, running a fan in a vacuum uses very little energy since there is no resistance. That's why when you put your hand over the end of the hose on a vacuum cleaner the motor speeds up and makes a higher pitched whine. I'd say you haven't restricted the flow at all. Nice work 👍
Rodney Philmon Exatly what I was going to say I was an electrician for over 30 years and have won many bets off this
Yeah I had it backwards in the video. Just acknowledged it in another comment.
Really good idea. I'm about to do a mini split in what will be a dusty shop... And I was worried about ruining the indoor unit.
I use SimplySafe. I'm pretty happy with it.
Thanks for doing this about the filters. I'm really having trouble in my shed though. Not enough space to get the runs to work right. Its driving me crazy. And you can't find a HF DC in stores anymore, and they are rare to find on CraigsList now too. Its really tough to get past this, and on to wood working I actually want to do. Very frustrating.
The device you are talking about is a velometer. We use it in HVAC applications to measure duct velocity and face velocity in lab hoods. You could also use a manometer to measure the pressure drop across the filters (if there is a measurable amount).
Using the manometer is an excellent idea for monitoring filter condition.
Also known as an anemometer
I just cleaned my minisplt. Took me 4 hours. I could not believe how dirty everything internal got over 1.5 years. I clean the screens monthly but, they really don't do any real filtering. I am just going to put a simple filter over the top at the intake of the system to try and curb it. I don't even care if it looses some efficiency. I don't want to have to clean that much dirt anytime soon!
Jay- very clever! I don't think after 2 months that was very much dust built up on the mini-split filter. I have to clean my air conditioner filter every few days due to two cats in the house. Just a thought- the frame in between the unit and filters, if you made that from a hardwood you could use threaded inserts so repeated removal doesn't cause the plywood to come apart. And all those people who said it wouldn't work probably don't have a shop or mini-splits. Damn back, seat drivers!
Great idea .Regards.
I don’t recall a video about the saw till. Very interested. Plans and video maybe? The colors are great. I love it when you have the camera pointed in different directions. When people face the camera the same way every shot it’s repetitive.
I think it's great 👍 working with mine.
A manometer is the best and way to check restriction to airflow. Stumpy Nubs has good video on the subject.
The large combined surface area of those filters, coupled with the static pressure that those units are designed for, may not move enough air, to make efficient use of the media. A good measure would be of the vacuum inside the boxes, especially before and after cleaning the filters. To properly filter - the air needs to move.
Do you plan on changing all four filters at the same time, or changing one at a time so that you always have relatively the same amount of air flow?
your office reminds me of the rebel base on Hoth.
Oh, I forgot to say, Good Job!
*très astucieux merci pour ce partage*
It means that the filters are not clogged up yet. Ha ha ha ha. You obviously won't let that happen. Good job.
Hello from a fellow Mississippi UA-camr. Before the filter boxes did you have any issues with cleaning the built in filters? Do you think you could run them without the internal filters at all?
You could simply turn the units on and cover a few filters with cardboard which will reduce the airflow thus showing you the change in amperage..
I don't know how it wouldn't work. The surface area of those filters is huge compared to the intake on that air handler. Cleaner air is always better. Seems like a great idea to me.
bela oficina parabéns show
As far as air flow vs motor amps. I don't know if this would relate to your mini-split, but in my Harbor Freight dust collector, the motor draws maximum amps when the air flow is at maximum, that is, the current is at it's most when the inlet is unrestricted. Blocking the inlet results in minimum current being drawn by the motor. I have 12 blast gates and have charted each inlet vs air flow vs current drawn for each. With all blast gates open the current is at maximum.
Yeah I had it backwards in the video. Just acknowledged it in another comment.
Hope that worked out. I would love to take the boxes off your hand. Looks great.
I built a similar air cleaner cart a few years back. When looking for a blower motor, I contacted a couple local HVAC companies about purchasing a used blower motor. I explained to them what I was going to do with it. One flat out said they wouldn't sale or give me one. The other said they would be happy to sale me a brand new one for about $200. They refused to sale me a used one. My patients payoff eventually though. I ended up finding a brand new one at a rummage sale for I think $30 bucks. The guy was an HVAC contractor who was retiring.
It's Genius!
I wonder how the air flow might change as the filters get dirty, I’m thinking not much. But remember with this kind of pump, pumping more fluid draws more power, less can reduce it, and stalling it usually makes much less amp draw. Example, block your vacuum hose, rpm’s will rise not fall. Nice addition, and well thought out as always. Your shops looks like it’s been a working shop for a year already. How hot does the ceiling insulation get?
Love it, well done.... Now can we do the reverse to make those mini-splits ducted?
Great video. I am commercial HVAC journeyman. I think you are dead on with adding extra filters. It offset’s there restriction. You would probably have problems if you did one filter. I would also add the thickest filters you can. Thicker filters =more surface are. That means less frequent changes. If air flow on the indoor unit is restricted to much in cooling mode it will ice up. So keep an eye on that. The only thing that is wrong in the video is if airflow is restricted the AMPS will drop. Because the fan is doing less work. But it would be hard to tell because it is a fractional house power fan. Keep up the good work. Always good videos.
Yeah I had it backwards in the video. Just acknowledged it in another comment.
Love this. Can you make a smaller version to sell for residential applications?
Everybody said it can't be done. Suddenly someone came along, who did not know this and just did it.
You could get real fancy and add a differential pressure gauge across the filter so you will know when to change them
9:03 Did you use the glue to seal for air-tightness, or to add some strength to the joints? I just did something similar, but I used caulk to seal it up. Never occurred to me to just use a pile of glue (actually, I think my glue probably would have been too low viscosity to hold up in vertical and inverted orientation fillets).
PS: That is a great picture!
Cool. The only thing about mini splits that has always bothered me was the lack of filtration or the ability to have any decent filtration. You should make these out of aluminum or plastic and sell them. Put a grill on the front. And maybe use just one large 4’’ media air filter. Rubber grommet. Or rubber skirt to attach to unit.
Anemometer is the name of the meter for testing air flow. Sounds like there is no need to test the decibel level as the mini-splits are barely noticeable. One thing to add similar to what you see on many new vehicles would be a restriction indicator device, like you’ll see on the air filter box of vehicles. Not sure if you could use one from a vehicle or not. If you can, it’s likely you could get one very cheap from a pick your part wrecking yard.
Thank you.
Jay Bates - Woodworking Videos and yes another great build tutorial.
I’m sure the mini-split manufactures state not to restrict airflow. Your experiment more or less debunked that claim. Unit failure related to airflow super unlikely. With all the dust collection devices you already have plus this, yes cleaner air in shop than living room. What a great shop you have. Never miss your videos.
You put out good, useful videos, Jay, and I thank you. I built a couple of 4 filter units similar to your roll-around unit intended to hand from 12' ceilings but errored in the choice of whole-house attic fans back when they were $35 apiece. The problem is the noise. Does anyone have a compact solution for drastically reducing the roar?
Jay, thanks for the video and the recent followup video showing your success. How did you decide on 4 filters? Obviously the potential for more airflow and surface area. 1 filter would certainly be more area than the standard filter. The MERV filters are going to reduce airflow because of their density, so maybe that's the answer.
The device that measures air flow is called an anemometer. I just bought a single 2 ton Daikin mini-split heat pump for my 24' x 38' shop and will be using three 4" x 16" x 25" Merv 8 Skuttle pleated filters. These have a double foam gasket on the top and bottom and I plan to add weather stripping between them as well as a track to slide them into. Thinking I should be able to eliminate the transition piece and mount the unit directly to the bottom of the filter box then simply remove the filters to service the unit. I have a Powermatic PM1200 air cleaner that I am going to mount near it as well.
Jay, maybe I missed your reason the filter boxes are not centered on the unit? Seems the filter the furthest from the unit would not be drawing air in as much as the other three. wm
Jay, thanks for this. I’m thinking about exchanging my old gas forced air furnace for a mini split. Your videos have given me great hope for doing it. One question though, barring the initial cost of the unit how much of an increase/ difference have you seen in your electric bill vs. your gas bill? Thanks, I sure enjoy your videos!
I used to work for a residential energy efficiency audit company, we would create and analyze software models based on how tight your house is, how efficient your current furnace is, how leaky your duct work is, cost per kilowatt, cost per CCF of gas, etc, and could then test variables, such as mini splits, to see if they would save or cost more money in operation.
I never dealt with billing but I think if you found an energy auditor near you and asked "around here are mini splits better than a gas furnace" they might be able to give a guesstimate to the answer for free, or for a couple hundred bucks come out and fully test your house and tell you exactly where you can make the biggest difference in savings, not just with the HVAC but also leaks through the top plat, gaps around duct vents, holes/gaps in the ducts, gaps around doors, windows that leak, etc.
This house and the house and our last house are both 100% electric. No gas needed. We live in a warm climate so gas heat is mainly used for a backup around here. And it's hard to notice a difference in electric bill as these were installed shortly after moving in. We didn't have enough "pre-mini-split" data to compare.
Jay, thank you and all the others who answered. This would just be for my 24x30 shop which has your average insulation. Also, I live in Indiana where it’s gets a bit cooler☃️☃️☃️. But I only keep the shop at around 48 degrees when I’m not using it and 62 when I am. I’ll do some more homework but my old furnace may be on its way out so I’m looking for alternatives.
Have you checked with Your Mitsubishi dealer about warranty issues. Also the sensor for your mini-split is in the top of your units
How about a pressure test on both sides of the filter. I'd say anything over a psi and you are getting a performance hit on your air circulation.
Hi Jay, great idea but I believe that your wrong about the amp draw. If you restrict or even completely block the inlet the amps will go down. This is because the motor is doing less work, aka moving less air. You can test this by completely blocking the inlet with Saran Wrap and checking the amp draw before and after. There may not be a noticeable change in the amps because the fan motor in mini splits are rather small and the main draw would be the compressor. If your mini split has a fan only setting that would be the way to go.
Yeah I had it backwards in the video. Just acknowledged it in another comment.
I like the Woodpecker wall display that you have with an assortment of their tools. Is that something you bought or you made? I'm having trouble locating something like that on their website
I used my CNC to make a single holder, just like their individual holders, for all of mine.
Wonder what the manufacturer would say and how it affects any warranties? I think I’d use the cheap blue fabric filters instead of the pleated filters. I know these are better but I’d worry about longevity of the mini split since those things aren’t cheap.