Browse Forums Heating, Cooling & Insulation Re: Ducted A/C Vents 11Mar 05, 2010 4:45 am Dear J.K. Rowling, Your books are entirely unrealistic. I mean, a ginger kid with two friends? Sincerely, Anonymous Re: Ducted A/C Vents 14Aug 10, 2010 10:16 pm Plans Done Feb 2010 Permit Done 23 April. Set out Done. Scrape and Excavations Done. Footings Done May 10th. Now, to find a brickie.Got one! Sub-floor bricks & Garage Done - 13th June Sub-floor installed 28 June (?) Re: Ducted A/C Vents 16Aug 12, 2010 3:10 pm We have done this a number of times. A round outlet (Paltech or Meton) to 250mm duct requires a 360mm hole in the ceiling If the duct size is 300mm you will need a 405mm hole in the ceiling. The trouble with replacing a 300mm square outlet that has a 250mm duct, is that the round equivalent will not cover the corners. You will need to go to the larger round outlet (405mm) but then the outlet will need a reducer to accommodate the 250mm duct. A bit of trouble but can be done. Abet with quite large outlets. Funny how different areas prefer different styles. Here in SE Qld 90% of outlets fitted are round. Hope this helps! Re: Ducted A/C Vents 17Aug 13, 2010 8:12 pm TDS rosewood Adam.R To swap the outlets over: Polyaire outlets are cheap, so thats one option. Also the more you spin the round outlets out, the more the airflow will be directed downwards. Some round outlets also creak when the airconditioning turns on, which has never been a problem for square outlets, but its rare. Square outlets with adjustable louvres on their face mean you can direct and split the airflow towards anywhere in the room (a great feature to have). Cheers Adam I think that's my problem I have been having with the noise coming from my round vents, it's a creaking sound. When I touch the round base on the vents I am getting the same creaking sound. The installer told me it was my steel frame contracting which I didn't beleive as the noise starts as soon as the unit goes on. I need to change the vents to the square type. Is there any way to stop them making the noise. Not that I'm aware of - I have the same issue. Basic physics of contraction and expansion of the material due to the heat increasing and falling. I have 7 registers in my home, and all of them do it, and continue to do so when the unit cycles via the thermostat. Very annoying. people with the metal vents don't seem to hear any noise so maybe that's the answer Re: Ducted A/C Vents 18Oct 29, 2010 3:38 pm well I finally got the installers to look into my creeking sound when my air con is running & they have agreed that the diffusers are making the noise from heat contracting. they are changing them over to the metal, another $250.00 down the drain retail its around double the price of a similar sized actron/dakin system from memory, They are excellent systems though. But with how builder gouge on AC/heating, you… 4 15804 Hi all, sorting out the ducted air con for a 350sqm double story house. Does this placement sound reasonable to you? Also, I plan to have 6 zones I think. Living room… 0 0 Hi all, sorting out the ducted air con for a 350sqm double story house. I think i plan to have 6 zones I think. Living room (mainly for entertainment so not used often),… 0 0 |