Author Topic: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers  (Read 3966 times)

Syonyk

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Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« on: October 31, 2021, 09:16:55 PM »
Edit: Project is done, no longer shipping anything, no longer participating in the internet at a meaningful level.  End result: I've shipped a bunch of stuff around that hasn't been installed, worsening carbon emissions through shipment.  Yay.  Fuck me.

Trying this here...

I tend to go on about energy efficiency and such, and using less energy, and I've decided to put at least a bit of my money where my mouth is here.

In a lot of homes, the outside wall power boxes - outlet boxes, switch boxes, etc, tend to leak a non-trivial amount of air.  They're a box, shoved into what ought to otherwise be a well insulated wall, and they're also an opening in a wall that would otherwise be decently sealed up.  As such, depending on the house, they're worth a couple percent of your annual energy use to close up with some insulating foam.

However, most of the packs of that are either bigger than you need, or you need to buy a few different packs.  I've purchased a couple large packs of the stuff, in a generic form that supports switches, round outlets, square outlets, the big paddle switches, and should work for pretty much anything without having to go nuts with scissors.  I would like to distribute these around.

So: Here's my proposal:

You post in the thread, tell me how many of these you need for your house.  The count is in "single boxes" - so a standard two outlet box is one, a double switch is two, etc.  You may have to trim some for doubles, but they're easily trimmed with anything.  Go around, count your outlet boxes and switches on the outside wall of your house (inside walls don't matter), let me know how many you need in the thread, and then PM me your shipping address.

I'll put your handle in the "Pending" category, ship them out on my dime.  When you receive them, install them, and then post here that you're done, and I'll move your handle to the "Completed" category.  If you've found them useful, you can send me a bit of coin (PayPal is fine, check or cash in the mail is fine, I'm flexible but don't do smartphone based apps, sorry, no longer running one of those toxic devices).  I've got some chunk of money set up to burn through for this project (and am running it a few places), and anything I receive will go to buying more foam in bulk to send out to other people.  When I run out of the pot of money, project is over, and I'll let people know.

The point of the "Pending" and "Completed" categories is just to encourage people to actually install them, not leave them on the counter for six months.  It looks like a lot of the world may have a nasty, cold winter, and energy supplies are a bit scary low, so, hey, let's do what we can!

Unfortunately, I can only ship dirt cheap in the US, so this offer exists for the US only - unless someone wants to take on some European or other country shipping as well.  I just don't have cheap overseas shipping available, and this is the sort of bulky stuff that ought to be dealt with locally.

Anyone interested?

Pending (shipped)
uniwelder
nereo
Weisass
ysette9
turketron
pressure9pa

Completed
Syonyk
HSBW
Glenstache
« Last Edit: January 03, 2022, 07:08:10 PM by Syonyk »

nereo

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #1 on: November 01, 2021, 04:22:32 AM »
I’m interested.
i counted 10 in my exterior walls (six 2-outlet and two 4-outlet)
Neat! Thanks
~n~

uniwelder

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #2 on: November 01, 2021, 07:36:35 AM »
Thank you very much for this!  Inspiration to improve!  20 single, 3 double, 1 triple.  I suppose that makes 29 single covers needed.  I'm also working on a new rental house and it would be nice to cover those as well, but I'll update with another posting. 

How does this work out economically?  It looks like they might retail for $0.25-0.50 each if you buy small packs from the store.  The lowest I found them online in bulk quantity was $0.10 each and then your shipping cost.


Sibley

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #3 on: November 01, 2021, 08:28:28 AM »
Already did mine. They do help. For me, I don't have insulation in my exterior walls so basically they help reduce drafts. It's most noticeable in small, enclosed spaces. In bigger areas with more air flow then the effect is more diluted. But every little bit helps in the old houses.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #4 on: November 01, 2021, 08:40:41 AM »
How does this work out economically?  It looks like they might retail for $0.25-0.50 each if you buy small packs from the store.  The lowest I found them online in bulk quantity was $0.10 each and then your shipping cost.

I don't think it does, compared to people buying them locally, but first class shipping is reasonably cheap, they're light, and obviously it's motivating at least a few people to make the improvements!

I'll get a batch shipped out later today and update the thread.

solon

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #5 on: November 01, 2021, 09:44:09 AM »
Can you post a link so I can see what you're talking about?

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #6 on: November 01, 2021, 10:35:34 AM »
This kind of thing: https://www.homedepot.com/p/Frost-King-Foam-Electrical-Outlet-and-Wall-Plate-Insulating-Kit-OS12H/100184290

I just have a set that has all the punch outs in one, so there's no need to count switches/outlets/etc separately.

uniwelder

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #7 on: November 01, 2021, 11:13:20 AM »
Rental house has 43 single and 2 doubles.

uniwelder

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #8 on: November 01, 2021, 11:17:25 AM »
I’m interested.
i counted 10 in my exterior walls (six 2-outlet and two 4-outlet)
Neat! Thanks
~n~

I’d like to know more about your house. Thinking back on our 1950 2 bedroom 750 sq ft house, it would have had probably 2 more than yours before we gutted and renovated.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #9 on: November 01, 2021, 12:02:30 PM »
Package heading out to uniwelder!

PhrugalPhan

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #10 on: November 01, 2021, 03:23:09 PM »
I have them throughout my house.  Some outlets needed them much more than others.  But I just picked them up at yard sales for free or close to that.  I would say if you're going to do that also check for proper closing windows and any other indoor/outdoor spots like vents or other access points as they can really kill you energy-wise.

AMandM

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #11 on: November 02, 2021, 08:51:39 AM »
Do basement walls count?

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #12 on: November 02, 2021, 09:44:29 AM »
It probably depends on the basement and how well insulated it is.  I would guess they matter less, but if you wanted to do the basement, just let me know how many!

@nereo - still need a shipping address from you.

NorCal

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #13 on: November 02, 2021, 05:13:01 PM »
I'm potentially interested.  I'd like to do it if it makes sense, but wouldn't waste the resources if it's a negligible benefit.

My house has 4x6 exterior studs, and pretty good insulation.  I don't know exactly what it's rated, but I'd guess R-19 or R-21 based on the gods of Google.  There is no noticeable air movement or temperature differential around the outlets.  The builders used some spray foam in places where the plumbing penetrated the exterior walls.  They may have done this around the outlets as well, but I can't see inside the walls to check.

I'm skeptical that there's much valuable in doing this in my house, but I'm open to be convinced by those with more knowledge.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #14 on: November 02, 2021, 05:36:17 PM »
Shipped to nereo!

I'm potentially interested.  I'd like to do it if it makes sense, but wouldn't waste the resources if it's a negligible benefit.

It sounds like your place is fairly tight, so less benefit than some others, but... they're still a hole in the insulation that reduces the thickness to outside.  And right now, it's fairly warm at least around us.

There are some for you if you want them!

nereo

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #15 on: November 02, 2021, 05:57:24 PM »
Thanks!
This random act of generosity by “someone I vaguely know over the internet” has literally brightened my week.


NorCal

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #16 on: November 02, 2021, 07:04:52 PM »
Shipped to nereo!

I'm potentially interested.  I'd like to do it if it makes sense, but wouldn't waste the resources if it's a negligible benefit.

It sounds like your place is fairly tight, so less benefit than some others, but... they're still a hole in the insulation that reduces the thickness to outside.  And right now, it's fairly warm at least around us.

There are some for you if you want them!

Thanks much!  I’ll get around to counting later this week.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #17 on: November 08, 2021, 02:32:12 PM »
Huh.

Didn't think free outlet insulators would be so unpopular.  I've still got 200+ of 'em...

uniwelder

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #18 on: November 08, 2021, 06:02:33 PM »
Huh.

Didn't think free outlet insulators would be so unpopular.  I've still got 200+ of 'em...

Maybe people don’t want to reveal their identity? Not sure.

I just got back home, so I’ll open the box and play with the covers tomorrow. Thanks again!

EvenSteven

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #19 on: November 08, 2021, 06:08:45 PM »
Huh.

Didn't think free outlet insulators would be so unpopular.  I've still got 200+ of 'em...

I would, but I already did this last winter when I got ice forming on one of my outlets.

Weisass

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #20 on: November 08, 2021, 07:08:51 PM »
Count me in. I just walked my house, and we have (only) 12 single outlets on exterior walls. Guess that 100 year old houses kept most of thst stuff off the exterior!

lutorm

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #21 on: November 09, 2021, 12:03:55 AM »
Since our house is single wall construction with no insulation, I don't think it will help. In fact, we try to keep airflow UP... ;-)

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #22 on: November 09, 2021, 09:18:14 AM »
Weisass, yours are going out in the mail today or tomorrow (it's pouring rain here, so I'm not sure anyone is going to walk up to the mailbox today).

HSBW

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #23 on: November 09, 2021, 01:16:23 PM »
I’m interested. This is a useful reminder and will give the motivation to do something I thought about last winter but never got around to. 26 exterior outlets here. Thanks!

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #24 on: November 09, 2021, 01:18:25 PM »
I’m interested. This is a useful reminder and will give the motivation to do something I thought about last winter but never got around to. 26 exterior outlets here. Thanks!

PM me your address and they'll get boxed up tonight!

HSBW

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #25 on: November 09, 2021, 01:37:18 PM »
I’m interested. This is a useful reminder and will give the motivation to do something I thought about last winter but never got around to. 26 exterior outlets here. Thanks!

PM me your address and they'll get boxed up tonight!

Sent! Thanks again!

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #26 on: November 09, 2021, 05:38:24 PM »
And labeled and ready to go out!

NorCal

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #27 on: November 10, 2021, 07:00:07 AM »
I looked through some of my outlets, and they all seem to be well sealed with expanding foam from the backside.  I don't think they'll add value to my house.

It's still pretty great that you're putting this together!

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #28 on: November 10, 2021, 07:54:18 AM »
Ah, great to hear!  That's pretty rare - even our home, built in 2016, didn't have outlet sealing.

HSBW

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #29 on: November 14, 2021, 07:31:54 PM »
And labeled and ready to go out!
Foam in place! (All except for the outlet behind the oven. Hopefully I’ll get to replace it with an induction model before too long and I can put the foam in place for that outlet then.)

Thanks again!

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #30 on: November 14, 2021, 08:20:29 PM »
Yay!

I'm considering an induction top for my stove, which is standard resistive coils.  I don't know much about them - are they significantly more efficient?

ysette9

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #31 on: November 14, 2021, 09:27:01 PM »
What an awesome offer! Posting to remember now and tomorrow I’ll go around and count outlets.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #32 on: November 14, 2021, 10:46:52 PM »
What an awesome offer! Posting to remember now and tomorrow I’ll go around and count outlets.

That, or just ban me from the site for being a fossil fuel shill, talking about how personal responsibility has anything to do with anything, shaming people into "conservation" instead of demanding that the only action worth anything is voting Democrat, who have shining lights of environmental something-ness, like Biden, opening up the strategic petroleum reserve, trying to claim he has "tools" to force OPEC to open the taps, etc.  Either way, everywhere else seems to think I'm in the pay of the fossil fuel industry, doing my own solar, insulating my house, trying to figure out how to use less energy for the same results instead of Voting Democrat(TM), sitting on my ass, and waiting for Politicians to Change the Systemic Issues Facing Us, while I use as much energy as I want, any hour, any day, any year, while demanding it be Green.

HSBW

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #33 on: November 15, 2021, 12:03:21 PM »
Yay!

I'm considering an induction top for my stove, which is standard resistive coils.  I don't know much about them - are they significantly more efficient?

The question of efficiency for induction vs standard resistive coils is a slightly complicated one. The range of numbers I've seen are 90-75% for induction and 85-65% for standard coil. It seems, in actual application, it is highly dependent on how well matched the size of your cooking vessel is compared to your coils. If the coils extend past your vessel the efficiency drops off considerably (by up to half, from ~80% to ~40%). Induction is not effected by this size matching issue as the magnetic field created only effects the metal present and doesn't dump heat into the ambient air the way a coil would in the same situation.

I currently have a gas stove and my desire is to remove the gas appliance (hopefully that will extend to all of them in my house over time). From this starting point, induction seems like the best option to maintain some of the temperature control aspects we enjoy with gas while reaching the goal of removing the gas appliance.
« Last Edit: November 15, 2021, 12:08:49 PM by HSBW »

HSBW

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #34 on: November 15, 2021, 12:08:20 PM »
What an awesome offer! Posting to remember now and tomorrow I’ll go around and count outlets.

That, or just ban me from the site for being a fossil fuel shill, talking about how personal responsibility has anything to do with anything, shaming people into "conservation" instead of demanding that the only action worth anything is voting Democrat, who have shining lights of environmental something-ness, like Biden, opening up the strategic petroleum reserve, trying to claim he has "tools" to force OPEC to open the taps, etc.  Either way, everywhere else seems to think I'm in the pay of the fossil fuel industry, doing my own solar, insulating my house, trying to figure out how to use less energy for the same results instead of Voting Democrat(TM), sitting on my ass, and waiting for Politicians to Change the Systemic Issues Facing Us, while I use as much energy as I want, any hour, any day, any year, while demanding it be Green.

Did I miss something? Has some one actually suggested banning you here or is this related to push back from another place? Personally, I'm more of a "yes, and..." kind of guy. Yes, vote for the candidates more likely* to do the right thing. Also, do what you can in your own life to make an impact. Increased personal efficiency has a critical role to play there.

*(Though "more likely" is woefully inadequate in this situation. It's like you're in a burning building and one group wants to slowly walk out and the other group wants to actively jump into the flames, and I'm on the side of "we need to be running out of here!")

ysette9

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #35 on: November 15, 2021, 12:10:59 PM »
Back on topic, I count 2 triple switches, ten double, and 3 single all on exterior walls. I presume there is no point to insulating interior outlets?

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #36 on: November 15, 2021, 03:00:44 PM »
Back on topic, I count 2 triple switches, ten double, and 3 single all on exterior walls. I presume there is no point to insulating interior outlets?

There's no real point to insulating interior outlets, no.  If there's enough cold air leaking through the walls that they would matter, something is far more wrong than outlet covers will fix.

Your package is in the mail waiting to go out!

Did I miss something? Has some one actually suggested banning you here or is this related to push back from another place? Personally, I'm more of a "yes, and..." kind of guy. Yes, vote for the candidates more likely* to do the right thing. Also, do what you can in your own life to make an impact. Increased personal efficiency has a critical role to play there.

*(Though "more likely" is woefully inadequate in this situation. It's like you're in a burning building and one group wants to slowly walk out and the other group wants to actively jump into the flames, and I'm on the side of "we need to be running out of here!")

Scattered other places, I'm probably going to take a long internet break again here soon, I find myself butting heads with people over stuff like the role of personal energy conservation, why you should do your own work instead of paying someone $5/W to screw you on solar installs, etc.  A lot of what used to be the more interesting corners of the internet have been overrun with solar installers and such, and the standard left-leaning trope that all that matters is who you vote for, there's no problem at all with, say, flying an 85 car motorcade halfway around the planet in cargo jets to chase around talking about how big a problem climate change is.

ysette9

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #37 on: November 15, 2021, 08:46:24 PM »
Thanks!

KarefulKactus15

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #38 on: November 18, 2021, 12:47:51 PM »
Do we have a way to estimate air leakage?  Is someone doing smoke test?

In curious how bad the leaks are with a properly assembled top and bottom plate for the walls.

Just curious. 

ysette9

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #39 on: November 18, 2021, 12:54:40 PM »
Do we have a way to estimate air leakage?  Is someone doing smoke test?

In curious how bad the leaks are with a properly assembled top and bottom plate for the walls.

Just curious.
In my childhood home when my parents first bought it you could feel cold drafts with your hand up against the outlets.

turketron

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #40 on: November 22, 2021, 02:39:44 PM »
This is great! Posting now as a reminder to count outlets later.

Is this mostly for exterior outlets above ground, or is it beneficial for any/all exterior outlets? We have a split-level so a few of our useable rooms are half-underground, but the outlets are all ~3 feet ground level.

KarefulKactus15

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #41 on: November 22, 2021, 05:25:13 PM »
Do we have a way to estimate air leakage?  Is someone doing smoke test?

In curious how bad the leaks are with a properly assembled top and bottom plate for the walls.

Just curious.

Replying to myself. - Classy.   

So I actually built my own blower door test machine once from an old air handler fan.  Using fan laws, a manometer and the manufacturers spec spec sheet for the blower - You can actually calculate your air infiltration and leakage.  Mine was technically a window blower door test.  I think I had about $100 tied up in the set up as the blower was acquired for used from classified ad.   

My results showed about a 1 foot by 1 foot area of leakage.  This is what a professional measured also at a later date with their machine that is like $3,000.
« Last Edit: November 22, 2021, 05:34:39 PM by Kroaler »

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #42 on: November 26, 2021, 08:20:38 PM »
Anyone else got 'em installed to report? :D

Is this mostly for exterior outlets above ground, or is it beneficial for any/all exterior outlets? We have a split-level so a few of our useable rooms are half-underground, but the outlets are all ~3 feet ground level.

I would expect it to be beneficial for all the outlets in a split level - the first foot or two of ground can freeze in a lot of areas, and that part is also likely in the same "wall cavity" as what's above the grade.

turketron

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #43 on: November 27, 2021, 11:36:15 AM »
Anyone else got 'em installed to report? :D

Is this mostly for exterior outlets above ground, or is it beneficial for any/all exterior outlets? We have a split-level so a few of our useable rooms are half-underground, but the outlets are all ~3 feet ground level.

I would expect it to be beneficial for all the outlets in a split level - the first foot or two of ground can freeze in a lot of areas, and that part is also likely in the same "wall cavity" as what's above the grade.

Hmm that makes sense! Including the lower levels brings my total to 1 triple switch, 4 doubles, and 22 singles.

ysette9

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #44 on: November 27, 2021, 03:55:20 PM »
Haven’t installed yet on my end. We received the package and then left on a thanksgiving a trip so I’ll do that next week and report back.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #45 on: November 27, 2021, 04:27:42 PM »
Hmm that makes sense! Including the lower levels brings my total to 1 triple switch, 4 doubles, and 22 singles.

Soon as you PM me your address, I'll get a bunch sent out!

Glenstache

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #46 on: November 28, 2021, 12:36:58 PM »
Just stumbled on this. I'm in, for sure if there are still covers available. I have 12 singles and one double on the outer walls (that shared wall in a townhome is great insulation). I've been methodically going about improving the energy efficiency adding insulation in the attic, swapping to a heat pump water heater, etc. Outlet cover seals were not on my radar. This is great.

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #47 on: November 28, 2021, 03:17:43 PM »
Just stumbled on this. I'm in, for sure if there are still covers available.

There are.  I've got the full set requested packed up and ready to ship out, should go out Monday.

I've still got 98 of the first batch available to ship, though @turketron has a claim on some of those (still need a shipping address!).

Syonyk

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #48 on: November 29, 2021, 04:52:05 PM »
turketron's package is ready to ship!

NorCal

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Re: Free* Outlet/Switch Plate Outdoor Wall Insulating Covers
« Reply #49 on: November 30, 2021, 07:21:11 AM »
@Syonyk

While this isn't exactly related to this thread, you seem knowledgeable about the subject, and it seems to generally fit in here.

I've been looking at home efficiency for a while, and I think going to zoned HVAC could give me a benefit.  Here's the general HVAC performance of our house:

1. A basement that always stays slightly cool no matter what the HVAC is set at.  This is generally fine, as it's not uncomfortably cold.  I think I could largely turn off the HVAC to the basement and be fine.
2. A main floor that heats/cools evenly
3. An upstairs that heats fine in the winter, but is impossible to cool in the summer.  I believe (but haven't been able to confirm) that the ~20" of attic insulation is becoming super-heated during the summer, and just isn't cooling off in the evenings.  The upstairs is mostly only used in the evenings (bedrooms), although my wife works from up there 1-2 days a week now.

I got a quote from a contractor for zoned HVAC, and they came back with a $6K quote.  That ain't going to happen.  But I recently ran across Flair vents (https://flair.co/).  Part of me thinks they could replicate the zoned system, but I'm a bit skeptical of their over-pressure claims, and whether there'd be any material energy savings.  I'm leaning towards putting them in just the basement, which would allow me to limit the AC that flows there.  I'd just only do it if I thought it could save me at least 5-10% on HVAC usage.  Putting them in the basement only would be ~$300, but putting them in the whole house would be ~$2K.

I'm also looking at a whole-house fan to help the upstairs in the summer, but I haven't made any decisions yet.  I suspect this will help the attic situation significantly just by replacing the super-heated attic air with cool morning/evening air. 

Any thoughts on whether this would be a worthwhile investment?