MINI SPLIT FILTER BOX
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- Опубліковано 2 січ 2021
- If you’re interested in building this project, check out the links below of the items I used in the build (not all items are exactly what I used, but are similar)(As an Amazon Associate I earn from qualifying purchases):
Laguna 6” Jointer amzn.to/2J2HYxd
Dewalt DW735 Planer amzn.to/3owNmZO
Drill Press amzn.to/3jB78Q0
Forstner Drill Bit Set amzn.to/3jxSqcQ
Irwin 6” Quick Grip Clamps amzn.to/3kAYW3M
Irwin 24” Bar Clamps amzn.to/31ONkTi
Irwin 6” Bar Clamps amzn.to/3jAMkIo
Irwin 12” Bar Clamps amzn.to/2JexI5d
Bessey 40” Parallel Clamps amzn.to/2HK7TJG
Machinist Square Set amzn.to/2HKUmkI
Kreg K4 Pocket Hole Jig amzn.to/34wMmwU
Kreg 1¼” Pocket Hole Screws amzn.to/3oxv8qZ
Dewalt 20v Cordless Drill amzn.to/34BrmoS
CA Glue Medium amzn.to/3mtUnsB
JB Clearweld Epoxy amzn.to/37MqLCt
Feather Board amzn.to/3jxAkYb
Window Weather Strip amzn.to/3pPuJ3j
Foam Weather Strip amzn.to/38VjlMj
Leather Contact Cement amzn.to/3510I8n
Acid (Glue) Brushes amzn.to/2HDgXzZ
Titebond II Wood Glue, 16 oz amzn.to/31Qf1et
Dewalt 20v Cordless Drill amzn.to/34BrmoS
Brass 3 inch hinge amzn.to/2Mpo7dj
Brass barrel bolt amzn.to/3b4zxgW
Tape Measure amzn.to/37RzMu6
Dust Mask amzn.to/2HKbass
Dewalt Safety Goggles amzn.to/3jImhiV
Ear Plugs amzn.to/2HKztGn
Here is a list of other tools in my shop I used (I am not affiliated with these):
Grizzly G0771Z Hybrid Table Saw www.grizzly.com
The filters I used are MERV 11 filters and I ordered the from AllFilters.com www.allfilters.com/
After installing the mini split AC unit in the shop I decided to build a filter box to go around it. The filters inside the mini split are not designed to filter out all the saw dust created in a wood shop. Since the space around the mini split is limited it limited me on the filters I could use. I designed the box so that there would be a total of four filters, two 12”x12” on each side and two 12”x20” filters in the front. This should still provide enough air for the unit to function properly.
I like this idea over others on UA-cam; the hinge opening helps a lot. I think this can refined to a version 2.0 where the mini split can fully open for maintenance without any disassembly.
What you say about the maintenance is possible. I designed it this way because of the available area to build it. Since I relocated (lost my house to a fire last year) and am building a new shop I wont have the area restraint. Hopefully I will be in and working in the new shop within the month. Thanks for watching and for your comment.
Very creative! Thanks for sharing!
Thank you! 😊
@@AndersenWoodCrafts can you give an update on the mini-split filter box now that it has been 3 years? How did it work? Any airflow issues? Etc. Thanks and great build video
I have a mini split in my shop and 8' 6" ceilings. very similar to what i see in your shop. I need to build a pre-filter for mine because I just say a video on a guy who did not pre-filter the incoming air and killed his 3 year old mini split.
Thanks for your comment. My new shop is almost complete and will be having a mini-split installed and will be doing something similar.
Nice!!! 😁👍
Thanks! 😁
You do know they make Phillips bits for drills now....
I will walk 50 yards to get a Phillips bit instead of picking up a screwdriver right beside me lol.
What if I just laid one a filter on top of the wall unit?
Sorry to hear about the house fire. Hope everyone is alright.
I like the design with the front hinged. Noticed what appears to be a bolt sticking out at each end (5:38 and right at the end). Purpose?
Any plans or dimensions?
I notice that these filter boxes often seem to be deeper than necessary, or is there something I’m missing?
Happy New Year and stay safe!
I was securing the side filter with a little block of wood, the bolt sticking out is to secure the front filter with a little block of wood. I don't know how imperative it is, but the reason the boxes seem to be deep is to allow enough air in the inside of the box so the unit isn't starved for air. My understanding is that if the filters are to close to the units intake it will starve the unit of air, making the boxes deeper (bigger) allows for enough clean air to be inside the box as to not starve the unit of air.
Thanks for asking about the house. We are settled in the new house, still working on getting the shop up and running. Hopefully I will be posting some new video soon.
any issues with it freezing up
No, as with any air filter in the shop, they need to be replaced at least monthly (the recommended every three months won't cut it in the shop). Thanks for your comment.
Great idea until you have to actually clean the coils , or condensation drain line.
It is a little of a pain, but I did make it so that it is relatively easy to remove to perform the maintenance. Thanks for the comment.
I’d easily trade the minor amount of time needed to access the unit for monthly maintenance in exchange for filtered air in my shop. Strongly considering doing this.
@@MichaelBrown-vq4fd It is a little of a pain to access the unit, but overall worth it. Thanks for the comment and for watching.
I take a leaf blower to my coils and watch the dust fly.
How is this working out for you?
No complaints yet.
I’m curious why you and others use so many sq/in of filter? I am about to make one for my shop mini split, and I wonder this because my whole house ac is larger btu and only uses a single 16x20 filter. I am not trying to criticize, I just don’t understand the logic and all of the ones I have seen are like this or much larger.
I figure double the inlet opening should be sufficient.
The installation instructions for the mini-split gives minimum distances the unit needs to be from ceiling and walls (the minimum distance is 6", but recommends it be around 24") for proper air flow. I used this measurement to build the box. Sorry for the delayed response, thanks for your comment.
It is a pressure drop due to filter resistance issue. More filter surface area means less pressure drop.
Mini-Split fans run at a significantly lower static pressure than central air conditioning fans and are not designed to pull through an additional filter bank, so by increasing the filter surface area, you reduce the impact of this additional filter bank.
The problem is that when you introduce too much resistance you reduce the air flow over the coils. This can cause them to ice up and that is bad for the compressor (in the outdoor unit).