Reddit mentions: The best under door draft stoppers
We found 45 Reddit comments discussing the best under door draft stoppers. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 21 products and ranked them based on the amount of positive reactions they received. Here are the top 20.
1. Evelots Draft Stopper Door/Window-Double-No Repositioning-No Cold/Dust-36 Inch
- Evelots jumbo draft stopper conveniently moves with your door - no need to constantly bend down to re-position! It has a vinyl cover which is easy to cut to length and very easy to clean. Double Sided = Double Protection! Also great for blocking noise and fumes.
- Draft stopper glides over carpet, wood, tile, linoleum and more to easily move with the door.
- Fits doors up to 36 inches length . Foam tubes and vinyl can be cut down to fit narrow doors. Jumbo 2-inch diameter foam tubes are perfect for blocking extra-large gaps under your door. Can be used for your front door, back door, garage entry door, bedroom door, bathroom door, etc...
- Cut draft stopper to size for windows to help prevent drafts and seal in hot or cold air. Flexible material allows for the draft stopper to form fit to your windows. Sold successfully on Amazon for 3 years.
- Trusted vendor from Vermont. For years Evelots has provided unique products with a 30 day easy return policy, and 100% satisfaction guarantee.
Features:
Specs:
Color | Brown |
Height | 2 Inches |
Length | 36 Inches |
Weight | 0.6 Pounds |
Width | 2 Inches |
Size | 36 Inch |
Number of items | 1 |
2. Twin Draft Guard 60220-DNA Extreme for Doors Brown PATENTED & TRADEMARKED, Single
INSULATION ALL YEAR LONG: Stay warm during winter months and cool during the summer months with the Twin Draft Guard Extreme. It features a patented design that slides in front of windows or doors to block cold air from entering. It also keeps cool AC air from escaping. It even reduces noise and pre...
Specs:
Color | Brown |
Height | 2.5 Inches |
Length | 18.2 Inches |
Weight | 0.7 Pounds |
Width | 8.2 Inches |
Size | Twin |
Number of items | 1 |
3. MAXTID Under Door Draft Stopper 32 to 38 inches Grey Adjustable Insulation Sound Proof Door Air Draft Blocker for Noise Light Smell Stopper
Reduce the air circulation between the inside and the outside of the doorThis door draft blocker also help to reduces drafts, light, noise and smellsAdjustable under door draft stopper fits 32, 33, 34, 35, 36, 37, 38 inches doors windows and covers gaps up to Adjustable draft guard fits doors up to ...
Specs:
Color | Gray |
Size | 38" |
4. SWISSELITE Door Draft Block 36 Inch, Under Door Draft Stopper Sound Proof Reduce Noise Keeping Warm in and Cold Out, Heavy Duty Efficient Door Sweep
Door draft stopper is made of soft plush material, the side of Velcro stick to each other when you put the draft guard next to the door. Specially designed to retain heat and repel moisture.36 Inch design fits most size.Blocks drafts from both sides of the door for double draft protection, but even ...
Specs:
Height | 4.3 Inches |
Length | 11.4 Inches |
Width | 5.5 Inches |
5. Lily's Home Door Draft Stopper and Air Seal Gap Blocker, Fits 36 Inch Wide Flush Doors, Ideal Solution for Cold or Hot Air Drafts | 37" Long 2 Lbs. Weight - Cow
STANDARD DOOR SIZE FITTING: The length is perfect for standard 36” door. The 37" size is ideal to cover entire length of the door with ease. The stopper works best with doors that are flush to the ground.ALL SEASON PROTECTION: This door stopper is your energy saver. It acts as a door sealer and pr...
Specs:
Color | Cow |
6. Evelots Dog Draft Stopper-Door/Window-38 Inch-Keep Heat in-No Noise/Insect
- Lower your heating and cooling bills with this adorable animal themed draft stopper.
- Makes heating and cooling your home more efficient also saves you energy and money.
- Great for blocking fumes and noise! Can be used for both indoor and outdoor doors.
- The outside layer is made out of hand washable polyester fabric.8omes in a light brown color. Measures approximately 36 Inches Long x 4 Inches Wide x 3.5 Inches Height.
- FROM OUR VERMONT HOME TO YOURS: For almost a decade, Evelots has offered customers unique products with a 30-day easy return policy.
Features:
Specs:
Color | Dog |
Height | 3.5 Inches |
Length | 36 Inches |
Weight | 1.74 Pounds |
Width | 4 Inches |
Size | 36 inches x 4 inches x 3.5 inches |
Number of items | 1 |
7. Evelots Cat Draft Stopper-Door/Window-38 Inch-Keep Heat In-No Noise/Insect
- Save money and energy. Cold air stays out and heat stays in. Cool and heat your home more efficiently with this animal-themed 36 inch fabric door draft guard. Also great for blocking noise and fumes.
- Clever design. This adorable cat door draft guard is purrfect for the animal and cat lover in your life! Plush cat includes eyes, whiskers, nose, mouth, ears, tail and paws.
- Many uses. This sweet kitty can be used for both indoor and outdoor doors. The outside layer is made of hand-washable polyester fabric. Place this cute draft stopper along windowsills to help prevent drafts and seal in hot or cold air. Soft material allows the draft stopper to form fit to your windows.
- Complements decor. Black and white colors add a creative touch to any room. Draft stopper fits perfectly against your door. Measures approximately 36 Inches Length x 4 Inches Width x 3.5 Inches Height over all.
- FROM OUR VERMONT HOME TO YOURS: For almost a decade, Evelots has offered customers unique products with a 30-day easy return policy.
Features:
Specs:
Color | Cat |
Height | 4 Inches |
Length | 36 Inches |
Weight | 2.29 Pounds |
Width | 3.5 Inches |
Size | 36 inches x 4 inches x 3.5 inches |
Number of items | 1 |
8. Simply Genius Door Draft Stopper 36”: Draft Guard, Draft Blocker for Interior, Bottom of Doors, Under Window, Garage, Fireplace, Energy Saver, Soundproof Room
- Easy fix window or door insulation: Attractive hallway décor and economical home improvement, filled and weighted fabric draft guard will block air gaps, save energy and keep heat or air conditioning indoors. Use as door bottom seal at patio or screen, back or front door or as a fireplace draft stopper. Easy to use under door seal for attic, basement or garage door to reduce airflow into the home and keep the cold draft away.
- Multifunctional home improvement items: Not just an under door draft stopper but use the door guard as window décor as a window draft stopper, soundproofing for doors to help napping babies sleep or act as a noise block from loud neighbors. Use door snake to block light or as odor control to keep smoke, dust and unwanted odors out.
- Simple to use and store: Quick to install, durable and functional, lay down draft guard as a physical barrier for drafty doors or window draft blocker, then use white corded handle to hang draft guard on doorknob or closet hook when not in use. Soft weights at ends and center keep draft stopper in place. Features decorative, embroidered snowflakes on both ends, and comes in black or brown to blend in with dark floors for a seamless look.
- Keep warm or cool: Close-fitting for a snug fit against doorways and along windows, draft stopper closes the gaps to reduces airflow, noise and light-leaks. Keeps your space warm or cool and keeps out dust, bugs and smells. An affordable solution if you're sensitive to air quality, light, noise or scents. Best for interior entryway, bedroom, home or apartment use. Door draft stopper snake is ideal for university dorm rooms, apartments, bedrooms, offices and other indoor areas.
- Dimensions and Care: Large size: Approximately 36”L x 4”W x 3”H”; 4” drop from handle. Length can vary based on how stuffed each blocker is. Overfilled product will measure shorter. Draft guard has a 100% polyester cover, best for retaining warmth; Filling: 78% stones, 22% polyester. Choose Color (Black or Brown) and Pack Size (1 or 2 Draft Blockers multipack) From Dropdown Menu, door draft blocker is New With Tags.
Features:
Specs:
Color | Brown |
Height | 4.3 Inches |
Length | 12.5 Inches |
Width | 8.6 Inches |
Number of items | 1 |
9. Twin Draft Guard (Brown)
- Draft guard energy saver, offers double draft protection, keeps heat and air conditioning from escaping
Features:
Specs:
Height | 1.8 Inches |
Length | 18.2 Inches |
Weight | 1.55 Pounds |
Width | 5.9 Inches |
10. Suptikes Door Draft Stopper Under Door Seal for Exterior/Interior Doors, Door Sweep Strip Under Door Draft Blocker, Soundproof Door Bottom Weather Stripping, 2" W x 39" L, White
- 【NO MORE GAPS】 - 2" Width x 39" Length, Fits Gaps up to 1 Inch. Self-adhesive door draft blocker for extra large gaps exterior/interior doors, garage, basement, bed, sofa and cabinet.
- 【SAVE MONEY and ENERGY】- In winter and summer, draft stopper prevent the leakage of air conditioning and heating, make your room more efficient in cooling or heating, save electricity and money.
- 【MULTIPLE PROTECTION】 - Guard against drafts, odors and noise; block out under-door light. Our door weather stripping makes your home feel more comfortable and warm without spending a ton of money.
- 【FITS FOR MOST DOOR TYEPS】 - 2" W x 39" L door seal for interior and exterior doors works on all sizes and materials, including: wood, glass, metal, plastic and more. The innovative adhesive is strong and stays in place.
- 【EASY TO INSTALL】1)Measure the bottom of the door and cut the excess seal; 2).Clean and dry the surface; 3).Peel off the backing film; 4).Apply the strip to the door and stays in place.Take on a couple of these steps and you will be amazed by the results!
Features:
Specs:
Color | White |
Height | 2.6 Inches |
Length | 8.5 Inches |
Width | 5.79 Inches |
Size | 2Wx32L |
Number of items | 1 |
11. Original Twin Draft Guard Door Draft Stopper, Year Round Insulator, For Summer and Winter Use PATENTED & TRADEMARKED
- INSULATION ALL YEAR LONG: Stay warm during winter months and cool during summer months with our convenient draft guards. Our patented design slides under windows or doors to block cold air from entering and prevent cold air from the AC from escaping the house. Made with a durable fabric cover, the sleeve holds foam cylinders on opposite sides of a door or window to create an airtight seal.
- GREAT FOR DOORS & WINDOWS: These draft stoppers can be used under doors and windows. They’re double-sided, allowing for extra protection from the cold or heat depending on the season. They feature a patented hook-and-loop closure that is adjustable so you can easily make them fit your home. These draft stoppers fit under doors up to 36" W.
- SAVE ENERGY: Don’t waste energy and money trying to warm up a cold house or cool a hot house when there’s a draft! Instead, use our efficient door weather strips. They will save energy by helping reduce the amount of power needed to warm or cool your home. These draft stoppers are compatible with all types of floors, including carpet, tile, linoleum, and hardwood.
- USE ANYWHERE: Our double-sided insulated door-draft stoppers can be used for both residential and commercial use. Use them to fill gaps underneath the door of your entryway, living room, basement, or garage. They’ll protect the interior of your home or business from harsh cold and hot temperatures, so you can enjoy the indoors. They’ll also help reduce outside noise and prevent dirt, dust, and crawlies from entering your home.
- INSULATION YOU NEED: These easy-to-install door stoppers are flexible enough to use on any type of floor and will securely fit under doors up to 36" W. You’ll never have to bend down to reposition them! Utilize these window and door stoppers in your main living area, basement, garage, or anywhere else to keep costs down and temperatures comfortable.
Features:
Specs:
Color | Brown |
Height | 1.6 Inches |
Length | 19.6 Inches |
Weight | 0.35053499658 Pounds |
Width | 6 Inches |
Size | 1 Count (Pack of 1) |
12. Evelots 2 In 1 Door Draft Stopper, Magnets For Steel Door-Clips For Regular Door
SAVE MONEY & ENERGY! Cold air stays out and heat stays in. Cool and heat your home more efficiently with this 36 inch magnetic clip-on door draft guard. Also great for blocking noise and fumes.EASY & CONVENIENT! Strong magnets inside a weather-resistant cover easily attach to metal doors. (aluminum ...
Specs:
Color | Brown |
Height | 2 Inches |
Length | 36 Inches |
Weight | 1 Pounds |
Width | 4 Inches |
Size | 1 Unit |
Number of items | 1 |
13. Door Window 2-pack Adjustable Energy Saving Under Door Draft Stopper (Brown)
14. Frost King DS2 Door or Window Draft Stop Cloth Seal, 3-Feet, Beige
- 3-foot long draft stop cloth seal that fits most doors
- Good for use in both summer and winter months to stop unfriendly drafts and wind noise
- Exterior fabric made of tightly woven synthetic fleece
- Nylon fiber fill and weighted with cotton bags filled with ground stone
- Includes a woven satin handle
Features:
Specs:
Color | Beige |
Height | 3.3 Inches |
Length | 0.7 Inches |
Weight | 1.02 Pounds |
Width | 36.1 Inches |
Size | 3-feet |
Number of items | 1 |
15. Draft Stopper - Slate Gray - Buckwheat - 3" x 38" for a 36" Door/Window - Measure
Specs:
Color | Gray |
Height | 3 Inches |
Length | 38 Inches |
Weight | 2 Pounds |
Width | 3 Inches |
16. Twin Draft Guard Extreme for Doors, Black PATENTED & TRADEMARKED
INSULATION ALL YEAR LONG: Stay warm during winter months and cool during the summer months with the Twin Draft Guard Extreme. It features a patented design that slides in front of windows or doors to block cold air from entering. It also keeps cool AC air from escaping. It even reduces noise and pre...
Specs:
Color | Black |
Height | 17.87 Inches |
Length | 8.27 Inches |
Weight | 0.73 Pounds |
Width | 2.36 Inches |
Size | Twin |
Number of items | 1 |
17. Hampton Direct Cat Draft Stopper
Cute cat designDesigned with one mother cat and five kittens41-Inch longBlocks draftsGreat decoration
Specs:
Height | 14 Inches |
Length | 41 Inches |
Width | 4.5 Inches |
18. Simply Genius Door Draft Stopper 36”: Draft Guard, Draft Blocker for Interior, Bottom of Doors, Under Window, Garage, Fireplace, Energy Saver, Soundproof Room
ATTRACTIVE and ECONOMICAL, filled and weighted fabric draft guard blocks drafty, chilly air temperature; Draft stopper keeps heat or air conditioning in building; For single front or back door, patio, screen door; Ideal cold weather gear; Save energy and money by locking in heat and keeping cold air...
Specs:
Color | Black |
Height | 3.1 Inches |
Length | 16 Inches |
Weight | 1.55 Pounds |
Width | 5 Inches |
Number of items | 1 |
19. VISEMAN 36 Inch Under Door Draft Stopper-Twin Door Draft Blocker Guard, Double Sided,Machine-Washable
The 36 inch twin door draft stopper keeps the cold air staying out,the heat staying in with both sided protection .Also great for blocking noise and fumes.Our double sided door draft stopper is made of soft plush material.And the form tube can be cut to fit the 36 inch narrow doors.Door draft stoppe...
Specs:
Color | Nylon-cotton Coffee |
Size | 36 Inch |
20. Two-Sided Door Draft Stopper Protector US
- Perfect for using on interior or exterior doors and windows.It is very soft, economical and practical.
- Double sided for maximum protection, easy to use.It can save your energy.
- Reduces heating, cooling costs, even reduce dust and odors. GREAT FOR ALL YEAR ROUND!
- This gadget is double sided to provide double air-leak protection and move with the door when opening and closing.
- Will help you to instantly protect your windows and doors by trapping heat and keeping out cold.
Features:
Specs:
Color | Brown |
🎓 Reddit experts on under door draft stoppers
The comments and opinions expressed on this page are written exclusively by redditors. To provide you with the most relevant data, we sourced opinions from the most knowledgeable Reddit users based the total number of upvotes and downvotes received across comments on subreddits where under door draft stoppers are discussed. For your reference and for the sake of transparency, here are the specialists whose opinions mattered the most in our ranking.
Well right now I'm running a bit bare (actually on a smoking hiatus until I cement this job I'm hankering after) but right now I have a draft guard under my door (here's an example).
Otherwise for the longest time at my old place I also used (and plan on reinstalling before the winter) some weather stripping around the door too (like this) that is just great at keeping cold air out and skunky smoke in.
A really cheap and honestly practical solution, and it'll help keep bugs and cold air out of your home. Win-win.
I have some large gaps under the door to some of my bedrooms. And I was thinking about using a door sweep such as this
M-D Building Products 67967 35-3/4-Inch Kerf Style Replacement Door Bottom with Vinyl Fins, Brown https://www.amazon.com/dp/B000I1CCOS/ref=cm_sw_r_cp_tai_al2LDbYC8E30X
To cut down on noise infiltration, I did those in my theater room and made a big difference, but then a friend mentioned the gaps are necessary for return air...? Am I gonna a burn out my furnace or air conditioner prematurely if I use those?
What about something like this that I just use temporarily when I have guests over that like to wake up early?
MAXTID Bottom Door Draft Stopper 32 to 38 inches Grey Adjustable Insulation Sound Proof Door Draft Blocker for Noise Light Smell Stopper https://www.amazon.com/dp/B07KK866KK/ref=cm_sw_r_cp_tai_9o2LDb2X3347N
Thanks!
oh you are most welcome. Something like this is what you might be looking for https://www.amazon.com/dp/B07MRHY1DM/ref=twister_B07MFSBZ67?_encoding=UTF8&psc=1
They also make them cute like this https://www.amazon.com/Stopper-Blocker-Solution-Drafts-Weight/dp/B07HVFVYF3/ref=asc_df_B07HVFVYF3/?tag=hyprod-20&linkCode=df0&hvadid=296052056382&hvpos=1o15&hvnetw=g&hvrand=15801637089365721963&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001881&hvtargid=pla-556211745307&psc=1 :)
Again wishing you babies to always be healthy!
Grab a towel, lay it on the floor in the doorway. Close the door on it. Make sure the towel is folded over enough that there's a tight fit.
Most of the sound comes from the gap underneath for most interior doors. This is doubly true for houses with non-carpet floors, they usually have at least a 3/8" open gap under the door.
---
The towel is basically a makeshift draftstopper. You can buy a product that looks nicer if you want. Like:
this
or this
or this
A lighter works as a nice easy and reliable draft test. Just run around the frame and watch for the flame to dance. A draft guard is a nice cheap and easy thing to add after you've addressed any weather stripping that needs to be replaced.
Two more door pro-tips:
Use foam tape like this to seal the gap between the door and doorframe.
This, combined with a draft sock will keep the dank vapors on the correct side of the door.
Bonus benefit: helps keep weird odors & noises out of your space.
I'm not sure about the space heater but it might help to get some of that plastic sheeting that goes over windows to winterize them. I've heard it helps a lot but I never get off my ass to put it up. Most are clear so you can still get sun while keeping the heat in!
Also, for under the door (if the crack is large enough to leak heat), get something like this. We used one of these on our unfinished upstairs to keep both the heat and the cold out from the usable portion of the house and it works great.
Your ideas are sound.
The shrink wrap window seal kits are effective at stopping drafts:
http://www.homedepot.com/p/3M-62-in-x-84-in-Clear-Plastic-Indoor-Window-Kit-2120-EP/100353672
A door sock can stop the wind pretty effectively:
https://www.amazon.com/Evelots-Jumbo-Draft-Stoppers-Energy/dp/B0100CRCUI
New weatherstripping and life will be good.
>The shrink wrap window seal kits are effective at stopping drafts:
http://www.homedepot.com/p/3M-62-in-x-84-in-Clear-Plastic-Indoor-Window-Kit-2120-EP/100353672
I have this applied in one of the windows of the master bedroom. Solved the problem. Ugly but effective.
>A door sock can stop the wind pretty effectively:
https://www.amazon.com/Evelots-Jumbo-Draft-Stoppers-Energy/dp/B0100CRCUI
I JUST ordered the duck brand one. It should be here in a couple of days. I am going to try it on one of the doors and then buy one for another.
>New weatherstripping and life will be good.
The issue is it's TOO cold right now to do anything major so a stop gap solution is the only option I guess. One more thing is I am a noob when it comes to weatherstripping . I have always lived in a much much hotter climate and it's my first midwestern winter and I am a single guy living in this place with my girlfriend over sometimes and doing everything alone kind of sucks.
Your sister must provide appropriate heating to you as a tenant. Look up your tenant rights in your state and confront her about it. The least she can do is provide an electric space heater for you.
Other than that, you can get a draft guard for under any doors with poor weather stripping. You can also wear warmer clothes at home (sweatpants, warm socks, hoodies, etc.) and add a thick comforter to your bed.
Ensuring all doors and windows are sealed, and hanging winter/thick curtains over windows should help keep things warmer.
Omgosh, mine quit the sofa destruction when I stapled 2 layers of sheets under it. Haha. For crawling under doors... something like this. It worked like a charm:
Evelots 36" Jumbo Double Door Draft Stopper, Energy Saving Draft Seal https://www.amazon.com/dp/B0100CRCUI/ref=cm_sw_r_cp_apa_i_hFpaBb26JFNTF
Do you mean something like the Twin Draft Guard (as seen on TV!)?
EDIT: I don't have any experience with it myself, please don't take this message as a recommendation -- just thought I could help with the link!
I don't know if this would fit better than the twin draft guard https://www.amazon.com/Evelots-Magnetic-Stopper-Energy-Saving/dp/B00CE8VC44
How much time, money, and energy are you willing to put into this? you could take the door off the hinges (most hinges have a pin that can be removed so nothing has to be unscrewed), and attach by glue or epoxy, another piece of wood to the bottom to help fill that gap.
Gey one of these. Under-door draft blocker. It is the adult version of "shove a towel under the door."
Suptikes Door Draft Stopper Under Door Seal for Exterior/Interior Doors, Door Sweep Strip Under Door Draft Blocker, Soundproof Door Bottom Weather Stripping, 2" W x 39" L, White https://www.amazon.com/dp/B072QDSJKT/ref=cm_sw_r_cp_apa_i_9IcsDbP40HHHA
Use it in addition to what people have already said (windows, fan, smoke buddy / spoof, etc). But this is THE KEY. Every other method relies on covering or re-directing the smell before it leaks out of the room (under the door crack). This prevents the leaking from ever happening.
Doors - solid core doors block sound the best. If you can change the door, that should be your first step.
If you can't modify the existing door, look for an under door draft blocker:
MAXTID Bottom Door Draft Stopper 32 to 38 inches Grey Adjustable Insulation Sound Proof Door Draft Blocker for Noise Light Smell Stopper https://www.amazon.com/dp/B07KK866KK/ref=cm_sw_r_cp_api_i_iEFZDbDY2JAQP
Also, it helps to use sound-dampening curtains.
Sometimes they're also called "sound proof", "insulated" or "blackout".
Although I haven't tried it, I've heard that the heavy blankets you'd find in a truck for moving furniture (Google "fiberglass blanket") is even better. I have a home office where I've installed the sound blocking curtains to cover the door (just have to take it off the hooks above the door when not working).
I have that happen too on occassion when my roommate needs to study or games late at night. So I got one of these draft guards for the door. Stops the light from getting in like a charm. You also don't have to remove them since they slide over the floor quite well.
I recommend that they either install weatherstripping or use something like a draft guard (example here). If possible, you might consider getting something similar for the door to your individual unit.
I'd recommend something like this. Also, if smoke's getting out enough to fug up the whole place, they probably get a pretty bad draft in winter/ leak cool in the summer anyway.
And don't buy it for them, just suggest it to them. They need to be grownups too.
Cold weather door stopper might work. Something like this
You can also cut a pool noodle to do the same thing :)
If you go to any hardware store and ask for "3M Window film" I'm sure they'll know what you are taking about.
You can find much more exciting ones but http://www.amazon.com/Thermwell-DS2-3-Feet-Draft-Cloth/dp/B000RUMZHE/ref=sr_1_2?ie=UTF8&qid=1376337968&sr=8-2&keywords=door+snake for instance.
I’d like to add on that the bottom of your front door could also be a source of heat loss. In a previous apartment, my door had a full inch gap from the floor. This thing made a huge difference: https://www.amazon.com/dp/B0125A7HJY/ref=cm_sw_r_cp_api_i_LXbZDbP5PBC7K
Maybe something like this?
Twin Draft Guard Extreme in Black - Energy Saving Under Door Draft Stop https://www.amazon.com/dp/B07B2RYQZS/ref=cm_sw_r_cp_api_i_3zlyDb5CDTDWQ
Twin Draft Guard Extreme – Energy Saving Under Door Draft Stopper https://www.amazon.com/dp/B003ZSWER6/ref=cm_sw_r_cp_apa_GIEszbYD9D53P
install one of these on your front door. It's what I use to keep the smell in. I am disabled and have no choice but to smoke at home, and pot is the only effective non-opioid treatment for my pain. Please consider the possibility that your neighbor is in a similar situation, even if not visibly disabled.
Here's the item at Amazon: http://www.amazon.com/Hampton-Direct-Cat-Draft-Stopper/dp/B004QM950E
I screw those in with a backer piece that is stronger. this prevents the issues you're having.
This is my go to:
https://www.amazon.com/Chang-Lian-65346306-Stopper-Soundproof/dp/B072QDSJKT/
and then use a piece of aluminum channel to pinch the mounting surface to the door with screws. you can find this at depot/ace/etc.
Try a draft blocker, I used that in my condo building in the city, and I smoked heavily both in my condo and on the balcony. You could also try smoking in the bathroom for a while, using the exhaust fan that's there.
https://www.amazon.com/gp/aw/d/B003ZSWER6/ref=mp_s_a_1_1?ie=UTF8&qid=1478811629&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=draft+blocker&dpPl=1&dpID=41IQmN4VbDL&ref=plSrch
Door draft blocker. Some are basically a long thin bean bag. Example:
https://www.amazon.com/Simply-Genius-Door-Draft-Stopper/dp/B075RGNTB4
Until you can do something with the floor, maybe this will get you by?:
https://www.amazon.com/Evelots-Jumbo-Draft-Stopper-Energy/dp/B0100CRCUI
Boom
http://www.amazon.com/dp/B004QM950E
Buy them on Amazon
Amazon link to a cat draft stopper
Draft guard
Hang a heavy blanket over the door, put a rolled towel at the bottom of the door or one of those draft dodgers https://www.amazon.com/gp/aw/d/B003ZSWER6/ref=mp_s_a_1_4
First things first, why is there a 1 inch gap between the floor and the door?
Secondly you need to buy one of these ASAP http://www.amazon.com/Twin-Draft-Guard-Extreme-Door/dp/B003ZSWER6
Cheap fix: put a line of tape that sticks from the bottom of the door to the floor. You’ll put another piece of tape on the opposite side of the original piece so there is no stick to the tape.
Money fix: they sell pads that insulate VISEMAN 36 Inch Under Door Draft Stopper-Twin Door Draft Blocker Guard, Double Sided,Machine-Washable https://www.amazon.com/dp/B07PQGZG3T/ref=cm_sw_r_cp_api_i_VC4sDbEQ7YWN3
Maybe this as seen on tv thing could help?
https://www.amazon.com/Draft-Dodger-Stopper-Protector-Excluder/dp/B07BPB1J7B
I tried one, but my cat wouldn't stop messing with it and that was more annoying
You can always use one of these or similar... at least until they eat through it, if your ferrets are as destructive about foamy things as mine were.
>"I'm exhausting the hot air from the portable unit into the ducts that go back into the central air system because I have no other option due to my casement window."
This is your biggest problem. Get some plexiglas with a hole cut to fit your vent hose. For the door get a draft gaurd to close the gap.