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@cyrusp100 3 сағат бұрын
I would not recommend buying double glazed windows if you are doing a retrofit. It is very expensive and not really worth it. You can get much better performance with much cheaper solutions: 1. Thick thermal curtains that are closed in the winter night and closed on really hot summer days 2. Decidous trees and vines to block the hot summer sun and allow the winter light in.
@peterryan7340 16 сағат бұрын
Using my ducted AC, i set the temperature to 24 degrees C. Once up to set point, i switch to fan only mode. It then acts like a heat recovery system
@_nz_diy_ Күн бұрын
Really useful to learn.
@jamesbell6996 Күн бұрын
Brilliant video and retrofit. Very interesting to do the retrofit with spray In insulation and spray foam rather than removing the plaster like in some of your other videos. Are you able to provide a rough breakdown of costs for doing a retrofit this way?
@_nz_diy_ Күн бұрын
Useful thanks.
@jamesbell6996 4 күн бұрын
Great video, thanks for making this. I am surprised the butterfly draft stopper has so much leakage when the fan is off on a windy day. The absence of a rim arpund the base seems like poor design. One advantage though is it seems they can be installed from inside the house in two halves, whereas the other product would require roof access - correct?
@ecoevo 4 күн бұрын
That is indeed correct.
@GrahamHunt-b3r 5 күн бұрын
Well, this is a refreshing factual presentation on sealed units. Best one I’ve seen it’s about time
@NAY2GAS 6 күн бұрын
Very Nice!, Unfortunately my curbs are 100 years old and all broken up and only 1" tall, at some spot the curb is almost even with the road and so I charge out my Kitchen window the past 7 years perfectly fine, I uploaded a video yesterday that shows how I run the cable 8 feet off the ground and no one has ever tripped on it yet since none of my cables touch the ground.
@jasonalo798 6 күн бұрын
Great vid guys! Looking forward to more. I put an externally vented duct on our axial fan and did a heap of draught sealing and came across the same issue - it didn't work! Upgraded to an in-line mixed flow fan and its working as intended. Fan noise was another challenge. Took me a long time to realise the sharp bend in the duct under the insulation was contributing to the noise. Sick of going into the roof. Glad its done now 😊
@Cd1988B 7 күн бұрын
I doubt the door seal dropped the temp by 4degrees bro 😂
@frankp9573 9 күн бұрын
Joseph... Can you compare vacuum insulated glass to gas filled. Apparently its a new technology more efficient.
@lachlanhendy1251 9 күн бұрын
I just removed the grill in my mum's 3 year old "high end" build to see exactly this. I was shocked! Do the A/C manufacturers not make prefab'd enclosures with the return air incorporated? This practice is crazy!
@ecoevo 9 күн бұрын
The don’t care. The building envelope is our problem. Like Evap cooler manufacturers, they just want to sell the unit, the cooling benefits in summer on dry days and the look it gives you.
@lachlanhendy1251 9 күн бұрын
🤦♂️
@god084 10 күн бұрын
Just applied at the principals to a tee for our bathroom with a 150mm in line fine with a back straight damper, semi rigid ducting and an exhaust to the roof. Still the fan is quite loud and the bathroom still does build up steam and moisture on the walls. I am wondering how much the ceiling grille performance can effect this as we currently have a 600x100 linear grill across the shower door opening
@tullgutten 10 күн бұрын
Also wind can easily pass over 20Pa pressure and make the shitty fan not move any air at all or go the wrong way. Anyway those fant who blow straight in the attic should be ILLEGAL!!! Those would never be approved for use here in Norway at least!
@ecoevo 10 күн бұрын
@@tullgutten agreed, but roofs normally go into negative pressure. The chances of an inline fan being over ran by wind pressure is pretty low.
@WilliePeck 10 күн бұрын
Love the crushed flex duct at 3:31 bet that run is getting the proper CFM
@ecoevo 10 күн бұрын
@@WilliePeck that crushed duct gets that house to 30pa. Installations in roofs are never perfect.
@sallybrown5071 11 күн бұрын
I was also wondering about the advice to have a fan vented to exterior constantly running, which contradicts advice to seal tight.
@ecoevo 11 күн бұрын
@@sallybrown5071 continuous exhaust is low flow, as opposed to intermittent high flow.
@user-dn4fu8uy2q 11 күн бұрын
It makes a terrible noise. They need to be designed so that they are silent
@ecoevo 10 күн бұрын
Which product makes a terrible noise?
@user-dn4fu8uy2q 10 күн бұрын
@@ecoevo my ceiling fan's draught stopper
@Elizajean83 12 күн бұрын
Great video and info! Can you please test the very popular Ventair Sahara exhaust fan ? What brand is the middle exhaust fan pls?
@ecoevo 12 күн бұрын
We may be able to accomodate that actually
@MrClearz 12 күн бұрын
Nice Johnny
@samday6621 13 күн бұрын
Great points. I’m concerned that condensation sucked through the vent into the cold ducting will condense in the ducting, pooling somewhere along the ducting.
@benmichels1977 13 күн бұрын
In a perfect world ducting should be insulated to the point of exit, and travel to its highest point as quickly as possible before taking a consistent path down to the exit point. In a ceiling space with a pitched roof that's usually easy and even uninsulated ducts won't have pooling and any condensate will quickly evaporate back into the air passing through. Unfortunately some (a lot) of tradies can be interesting in their approach
@dalestanbrough2290 11 күн бұрын
The Panasonic fan recommends a 100mm pvc pipe on a slope, so any condensation will travel outwards.
@c4az57b 13 күн бұрын
So what is the Australian building standard for intalation of ventilation fans in SA? We have a new house that is lest then 12 months old and they have installed the basic ceiling fan in the wc that vents straight into the roof space. Is this standard procedure or should they have used a different product?
@evinvestfuture7440 13 күн бұрын
Good video JK
@alberttjiptabudy 13 күн бұрын
Would be good if you’ll could cover rangehood as well
@rajTrondhjem10 13 күн бұрын
Great video..
@mr_mysterious_6174 13 күн бұрын
If you have your fan running on low all the time it would suck the heat out of the bathroom and it would always be cold?
@ecoevo 13 күн бұрын
@@mr_mysterious_6174 you would hope for the replacement air to be coming from the house, so it should be able to leverage more from living area heating systems. Unless you leave your bathroom window open.
@mr_mysterious_6174 13 күн бұрын
@@ecoevo People living in not-so-well-insulated homes may want to keep their bathroom always warm without heating the whole house. This can be achieved with infared heaters that can be programed to keep the bathroom at a set temperature. If the fan is always running the heat would be lost.
@michaelcook9414 13 күн бұрын
In Australia it's pretty much a given that the makup air will be coming from outside. With this in mind, would it be better to have a dedicated ERV/HRV and dehumidifier system to provide makup air..... OR just crank the heating/ cooling to condition the infiltrated air (keeping in mind I've already paid to condition the now exhausted air from the bathroom). Either way it sounds like it's going to put a nice sized hole in my pocket. But with the ERV route it at least feels as if I'd have some control of the makup air like filtration and such.
@fokcuk 13 күн бұрын
Would also be nice to see some retrofit product recommendations for these cheap fans. Changing from big round hole in a ceiling to a small one (or smaller square) is not a small task, with plastering and repainting
@uDidWatt 13 күн бұрын
Great video! I'd be interested to see ERV/HRV systems and their use cases here in Australia. Perhaps also dedicated make-up air for these fans and range hoods
@davidunwin7868 11 күн бұрын
Yeh I want to replace my bathroom fan with an externally ducted one but also a HRV system. Also need one for the toilet/laundry area...
@PhilipRoper 13 күн бұрын
I just installed a centrigufal fan (not a Panasonic) and - even after adding a speed control to slow it down to suit the room size - its motor is noisy. The airflow is fine and not intrusive, but the hum from the motor is quite alarmingly loud. I think for this reason, I would next time use a mixed flow inline fan inside the roof space instead of one of these mounted right on the ceiling.
@sheershsrivastava 12 күн бұрын
Try Panasonic centrifugal and you will be amazed
@galen__ 13 күн бұрын
This is great. Looking forward to seeing more.
@iteerrex8166 13 күн бұрын
When you build an air tight house, ventilation is very important, but also is an energy recovery system. It would be a big waste to shoot out the nicely heated or air-conditioned air to outside.
@Coz131 12 күн бұрын
Australia isn't up to that standard. Air tight houses require air exchangers that detect moisture, CO2 and other pollutants such as when cooking with gas. I wish that is standard though.
@gaussmanv2 15 күн бұрын
You care about CO2 in a house, but insist on a gas stove which is WILDLY INEFFICIENT that puts out not just CO2, but CO as well, something that is DIRECTLY NEGATIVE TO YOUR HEALTH. Not to mention, CO2 at those levels just isn't a problem. And don't get me started on the EMF crap. This guy's a F***ing moron. Came here for useful info and just didn't get any of that.
@KB-yb7vy 17 күн бұрын
Would it work if you had a fan blowing in as well is one sucking out
@PlanetNegative 17 күн бұрын
That's not a real test. They are in the exterior. Material heat with the sir temperature, they should build a storage, paint all around it, and measure the temperature inside . Has to be in the morning and wait until middle of the day to see which one stay cooler, my garage door was green, getting hit by the sun light, garage temperature was about 125 f. Painted white,temperature dropped to 98, 109 at most.
@ecoevo 17 күн бұрын
@@PlanetNegative White makes massive difference. Indeed it does, and this videos shows it.
@4toni729 18 күн бұрын
This is exactly what our return is like in Melbourne. When we had our system serviced last the person chucked our return filters and didn’t replace them 😮. Off to buy these products.
@ecoevo 18 күн бұрын
@@4toni729 have fun doing this! You will notice a huge difference!☺️
@4toni729 19 күн бұрын
I have just found your channel. I am in Melbourne and have just checked our ducted heating return and ours is partly open to the roof and massive gap around the floor point too. I will be showing my apprentice son this and your other videos on your channel because our house is an icebox. But also so he understands how to renovate & build better houses going forward. Thanks so much for doing these videos.
@bradleygallant615 20 күн бұрын
Seal it up?! So when the fan motor needs to be serviced or when it needs a full clean, youll have to paint because the calk will pull it off.
@ecoevo 19 күн бұрын
@@bradleygallant615 A full clean, needs you to disturb refridge pipes? That’s abit silly.
@johnhcorwin 21 күн бұрын
What about a fully reflective metal roof surface?
@ecoevo 14 күн бұрын
We covered zinc alum? White kills it.
@johnhcorwin 21 күн бұрын
Do solar panels also reduce roof heat since they intercept the sunlight?
@ecoevo 14 күн бұрын
They can indeed. The more coverage you have, the cooler your roof for sure.
@Beeblebrox6868 24 күн бұрын
I thought this video would explain how you can have "breathability" to stop the buildup of CO2 in an airtight home. It seems to be more about moisture (important, but not the same thing). How can you justify creating airtight homes that just build up CO2? Is the only way around to install expensive air filtration systems?
@ecoevo 24 күн бұрын
There are 3 options, operate your windows, install a push pull ventilation system, or retrofit something to your existing ducted system. Relying on leaks from mouldy wall cavities is not a good source of fresh air.
@Beeblebrox6868 25 күн бұрын
Thanks for these excellent videos! After seeing so many north American and UK videos lately covering energy efficient homes, it's great to see many of the same ideas discussed in an Australian context. I do have one question: because I have no experience or knowledge of building - and I'm really not a home handyman type - how can I be sure when I'm talking to a building or renovation provider that what they are offering meets the current best practice standards, and that their knowledge is up to date? I've had a bad experience with a "cowboy" builder in the past, and I would genuinely like to know if there's some kind of certification or verifiable qualification I can use to check whether my builder can meet this best practice. Sorry if this is an obvious question! I'm genuinely quite confused by the amount of information I need to hold in my head when discussing these topics with a builder.
@ecoevo 14 күн бұрын
Passive house builders understand many of these concepts very well.
@Beeblebrox6868 25 күн бұрын
Seeing examples like this of poor quality rental homes (and this far from the worst example!) makes me quite furious at the state of Australia's rental market. Yes, been there, queue of people looking at the property with maybe 10-15 minutes max to "inspect" it. No option to have things tested. No guarantee that the heating and cooling systems that appear to be in place will even work. And the law just let landlords get away with it. Just imagine if there were enforceable standards on landlords before a property could be leased? And if property managers had a duty to verify the quality of the housing stock?
@zenastronomy 26 күн бұрын
what kind of worker should i hire to install a vented hood? i need the hood to be vented through a double glazed window in kitchen. so i think I'll need some kind of glass worker. but i don't know what qualification worker i should look for?
@HanDIYman007 27 күн бұрын
It's all about using white since white has the highest Albedo effect across the color spectrum. Have applied this principle on our own roof 😊
@DATApush3r 28 күн бұрын
This video is epic!
@ecoevo 28 күн бұрын
Surely this one is more EPIC with the NASA space shuttle launch? kzbin.info/www/bejne/jGnHmGSbhcl9bJosi=CsQfaYUwxwBlqEv_
@DATApush3r 28 күн бұрын
@@ecoevo Haha I just watched that one too! I'm so sad I found these only after I just got a new colourbond roof put on in monument... considering painting white now.
@ecoevo 28 күн бұрын
@@DATApush3r Monumental! Having a warmer roof allows for better drying of condensation that can form in your roof too. So it’s not all bad. Make sure to focus on good coverage of the insulation being abutted to your ceiling. m.kzbin.info/www/bejne/q33WYph-l7SgpJI
@bluedunn374 29 күн бұрын
Why did you go with open foam sub floor spray insulation over closed foam?
@ecoevo 29 күн бұрын
The idea at the time, was if there is a water leak in the house. But your point is valid. Closed cell may have been a better choice.
@bluedunn374 28 күн бұрын
@@ecoevo Subscribed! we are in a similar situation with the same vintage of home in VIC with the Tas Oak floors. We are having issues with condensation on the windows (double-glazed) leading to mould issues. The subfloor earth/ground is unfortunately damp in winter due to being at the base of a hill, so whenever it rains it's a problem. I've been told by the Spray foam contractors that they can spray the subfloor perimeter joist to seal any drafts going up through the gaps into the base of the wall cavity, and that combined with an entire subfloor spray foam should stop the moisture from getting into the house... I'm doing quite a bit of research and due diligence before deciding on it, Im not convinced that its that simple. Did your spray foam smell at all after the required setting time? Any fishy smell in the house? Any regrets or would you have done it differently today? might be a good video to revisit? I'm also looking the the heat transfer system you have, its a great cost-effective idea. Thanks, great content!
@ecoevo 28 күн бұрын
@@bluedunn374 no fishy smells. Make sure you contract an experienced operator. If it’s very humid under your subfloor, close cell would be a good idea. Also installing your hot water pump under the subfloor if there is room could help dry out the subfloor. It would be a good idea to add subfloor ventilation too. We did a video with spray foaming the roof of a garage with closed cell foam too.
@bluedunn374 Ай бұрын
Is this bloke ok?
@ecoevo Ай бұрын
@@bluedunn374 probably not.
@jimtoomey9522 Ай бұрын
What about using the shiny metal roof with no paint ?
@ecoevo 29 күн бұрын
We cover that, in this video. kzbin.info/www/bejne/e6qvZWuFgtOmb9Esi=vD4-duDQUTwQGNsY
@thomasr1051 Ай бұрын
You ripper tape 😂i love it
@ecoevo Ай бұрын
You can buy this tape here. tighthouse.com.au/products/proctorpassive-yourippa-silver-tape?_pos=2&_sid=382887062&_ss=r