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Old 11-03-2011, 08:24 PM   #1
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New Cabinet Over Air Register on Floor


I'm in the process of remodeling my kitchen and the layout of the cabinets is going to be changed. My issue is that the planned location for one of the new cabinets currently has an air register on the floor, and I'm not sure what the right solution is.

(BTW, just for full context, the kitchen is about 190 sq. feet, has 7'6" ceilings, and there are currently only 2 air registers including the one being discussed)

In my mind there are a few options:
1. Put some kind of cover/cap on the duct to block the air flow, then just put the cabinet on top. My question with this is ... since that will block off half of the air flow to the kitchen, will we still be able to properly heat/cool the kitchen?
2. Put no cover/cap, but still just put the cabinet on top. So same question as with option #1, plus I'm wondering if the air flow will potentially damage the cabinet (mold, mildew, etc.).
3. Buy some piece of duct work that bends 90 degrees and will connect to the current duct work, then cut a hole in the toe kick of the cabinet and route the air flow out that way. Presumably this will work and still maintain the same level of heating/cooling, but is this common practice? I don't know if I've ever seen a kitchen with this.
4. Removing all the duct work underneath the floor and installing a new air register somewhere else in the kitchen. If we chose this option, how difficult is this to do? The ceiling in the basement is open and there's a pretty decent spot between the same two joists as the current register. Could I do this myself or would I definitely need a HVAC professional? How expensive would it be to hire someone?

Any other options I'm not thinking of? Thanks.

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Old 11-03-2011, 08:34 PM   #2
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New Cabinet Over Air Register on Floor


Wow you are really making more of this than necessary.

Don't do anything. Place the cabinet over the vent opening and cut a vent into the toe-kick at the front of the same cabinet. That's the way it is done. And "NO", it won't hurt your cabinet.

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Old 11-03-2011, 09:37 PM   #3
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New Cabinet Over Air Register on Floor


Look up toe kick duct. When you cut the toe kick, the duct will allow the airflow to be more consistent, then just blowing under the cabinet and leaking out the back, etc.
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Old 11-04-2011, 04:29 PM   #4
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New Cabinet Over Air Register on Floor


Well lets put it this way;In cheaper homers number 2) with a toe kick grille on the toe kick is done.
In better homes number three is done.
Its up to you.By the way the duct that you would used is called" stack" It comes in 2 1/4 and 3 1/4 inch thicknesses.I would use the 3 1/4 Inch stack with a shortway 90 to make the turn to the toe kick.
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Old 11-04-2011, 05:12 PM   #5
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New Cabinet Over Air Register on Floor


Current code requires that it be ducted from the existing boot in the floor out to the face of the toe kick. On new construction this is how you do it, you are no longer allowed to blow it into the void under the cabinets and cut a grill in the toe kick.
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Old 11-04-2011, 05:29 PM   #6
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Quote:
Current code requires that it be ducted from the existing boot in the floor out to the face of the toe kick. On new construction this is how you do it, you are no longer allowed to blow it into the void under the cabinets and cut a grill in the toe kick.
Well there you go! Makes sense to me.
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Old 11-05-2011, 12:48 PM   #7
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New Cabinet Over Air Register on Floor


Definitely option #3 connect a 90deg ell to the floor then out the toe kick install a register in the toe kick. The only way to go. You don't want hot/cold air blowing around under your cabinets.
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Old 11-05-2011, 01:26 PM   #8
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New Cabinet Over Air Register on Floor


So it seems like the consensus is to route the air flow under the toe-kick with some piece of 90 degree duct work. Any additional tips on what supplies I'll need or how to connect the ducts work?
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Old 11-06-2011, 06:49 AM   #9
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New Cabinet Over Air Register on Floor


look up post by nolamar on 01-26-2011 titled

building hvac vent into bath vanity -- and read from beginning to end, It includes a couple pictures to get the idea.

Last edited by COLDIRON; 11-06-2011 at 06:52 AM. Reason: changed spelling of word
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Old 11-28-2011, 09:00 AM   #10
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New Cabinet Over Air Register on Floor


We have an older townhouse with this issue: the kitchen and downstairs bathrooms have cabinets over the air vent. Seems like the air gets "lost" under the cabinet and doesn't blow out as warm or as cold as it should. We've been wondering what to do about this (the air blows from a small opening above the toe-kick) so it looks like we'll need to cut room for and install a register. Not sure why they did it this way!
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Old 11-28-2011, 10:22 AM   #11
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New Cabinet Over Air Register on Floor


homemomma, you would have to lift the cabinet. The better thing to do, is to locate the register on the other wall from it. We have ours across from the toilet, which actually works out great. Our bath is only 6x10, but relocating the vent from where it was under the sink to the other wall, it actually is warmer. Plus since it is a older house, and has the larger register vents, more air enters the space to help keep it warm.

Place the vent on the wall, not on the floor, due to if any water hits the floor, it will enter the vent, and end up pouring into the furnace. This is the same with the Kitchen area. Personally, no registers should be flat on the floor, they should be up on the wall, so nothing enters them.
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Old 11-28-2011, 10:26 AM   #12
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New Cabinet Over Air Register on Floor


@ gregzoll, There are millions of homes in the US that are designed with floor registers. Slab homes, basement homes, crawlspace homes.
There's nothing wrong with floor registers.
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Old 11-28-2011, 10:30 AM   #13
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New Cabinet Over Air Register on Floor


Quote:
Originally Posted by COLDIRON View Post
@ gregzoll, There are millions of homes in the US that are designed with floor registers. Slab homes, basement homes, crawlspace homes.
There's nothing wrong with floor registers.
As I stated before Coldiron, stuff falls in them, and they are the worst thing in baths and kitchens, especially in baths. Ever had a tub overflow? Where does the water go, down the register vent.
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Old 11-28-2011, 11:15 AM   #14
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New Cabinet Over Air Register on Floor


My guess is that nine out of ten homes that I work on have floor registers.
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Old 11-28-2011, 01:15 PM   #15
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I never seen a house where the registers were not on the floor. Touring/selling homes is how I make my living

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