Browse Forums Heating, Cooling & Insulation 1 Feb 20, 2023 12:02 pm Hi all Recently replaced all carpet in the house with floorboard. This has left some larger gaps beneath doors to bedrooms and therefor has created a draft and air loss when air-con is turned on We have a long hallway and the air-con return is in there. I know the intention of that vent is to remove hot air from the house by sucking it into the air con unit. So our concern is that if we cover those door gaps with mounted seals and effectively make the hallway "airtight", will it have a negative effect on the performance of the air con as it's only pulling air from the hallway Re: Making a hallway airtight 2Feb 20, 2023 12:19 pm We had to put a large vent in the door between our hallway (which has the air con return) and the front half of the house (which is probably 65% of the house air "volume"). With the air con running the air return was so hard across the door it sounded like a hurricane with the door shut. Reducing the door gaps would give the same result I assume - lots of noise and also doors that slam quite easily (not ideal if you have kids). Re: Making a hallway airtight 3Feb 20, 2023 12:22 pm That's exactly what happens in our house! We have three air con zones, front lounge / middle lounge and kitchen / bedrooms When we turn on the front zones and not in the bedrooms, you can hear the air being sucked out through the door gaps and can cause door slams Re: Making a hallway airtight 4Feb 20, 2023 1:46 pm There's also the issue of creating too much positive pressure in the room. If you seal the door on say a bedroom so they air can't escape to the hallway you create a positive pressure environtment. If there's too much pressure you can end up popping the ducting in the ceiling off the vent or otherwise causing a leak. Then you're cooling your roof cavity. Re: Making a hallway airtight 5Feb 20, 2023 2:16 pm IncredibleBulk Hi all Recently replaced all carpet in the house with floorboard. This has left some larger gaps beneath doors to bedrooms and therefor has created a draft and air loss when air-con is turned on We have a long hallway and the air-con return is in there. I know the intention of that vent is to remove hot air from the house by sucking it into the air con unit. So our concern is that if we cover those door gaps with mounted seals and effectively make the hallway "airtight", will it have a negative effect on the performance of the air con as it's only pulling air from the hallway the air has to go somewhere. You don't want to create hurdles for it. Re: Making a hallway airtight 6Feb 20, 2023 2:41 pm Spazzen There's also the issue of creating too much positive pressure in the room. If you seal the door on say a bedroom so they air can't escape to the hallway you create a positive pressure environtment. If there's too much pressure you can end up popping the ducting in the ceiling off the vent or otherwise causing a leak. Then you're cooling your roof cavity. Our fixing carpenter (when installing the vent) said he's seen the pressure cause cracking between the cornice and the ceiling in larger rooms. In hallways, he said the narrow width usually meant it wasn't a concern unless there was issues with workmanship. Re: Making a hallway airtight 7Sep 14, 2023 3:34 pm That's one of the problems with ducted. I don't think you have much of an option. at most it will have a short lintel which could be moved up just below the ceiling or even above. Above means you need to patch the cornice and might need to deal with… 2 63485 What? It's a lighting question, the control joint is only needed at 12m centres, a bulkhead or change of direction will suffice as a 'break' in the ceiling, just make… 8 11660 Hi there, looking to have a gym in a new build. Planning to install some sort of rubber mat flooring (on concrete) i.e. Asking the builder to not do floorboards in the gym… 0 4403 |