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| Thread ID: 91656 | 2008-07-14 09:15:00 | Insulation | beetle (243) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 688836 | 2008-07-17 21:02:00 | I agree with annie 100% Unless those filters are frequently cleaned they get stuffed and more and more stuff gets through. Taking filthy air from the roofspace is not the way to go.:eek: Also the heat is not there when you really need it(cold foggy and rainy days, cold mornings) Insulation, double glazing and a ventilation system that draws the air from outside with an intregrated heat exchanger is the way to go rather than this stone age low tech stuff from DVS, HRV or whatever they call it.......:eek: It doesn't matter if the air is coming from the roof or outside, it still requires filtering. |
Greven (91) | ||
| 688837 | 2008-07-17 21:51:00 | The kind of microdust plus toxins like formaldehyde (from insulation) in the roofspace is not possible to completely be filtered out unless a high-tech filter sytem is used which is far more expensive than the whole DVS, HRV... Yes outside air must be filtered too but since it is much less contaminated it is no such a problem. Why would someone want this air from up there in the first place ? :lol: :lol: I have worked myself in roof spaces... the thought of having it in the livingroom.....yk!! HRV or DVS is just another gimmick, like thermal drapes, dehumidifiers, condensation channels on windows................. All designed to try to compensate for serious shortcomings in the design and methods of NZ house building :crying |
Thinkagain (13493) | ||
| 688838 | 2008-07-18 07:30:00 | mmm I was in an 'interesting' roofspace today... | pine-o-cleen (2955) | ||
| 688839 | 2008-07-18 10:21:00 | My house (to my surprise) has polystyrene panels fixed to the ceiling in the living room, held there by battens. Painted white, it was only when I tapped it and found it soft that this became obvious. Very good retrofitted insulation. Not so great in a fire. :D |
Winston001 (3612) | ||
| 688840 | 2008-07-18 10:59:00 | As Wainuitech said - HRV systems have excellent filters (which need to be replaced every couple of years). Ours was done about 12 months ago - the tech showed me the one she pulled out: filthy!!! Since we've had our HRV, my son, who has suffered with asthma, hardly has to use his inhaler... |
johcar (6283) | ||
| 688841 | 2008-07-18 11:12:00 | My house (to my surprise) has polystyrene panels fixed to the ceiling in the living room, held there by battens . Painted white, it was only when I tapped it and found it soft that this became obvious . Very good retrofitted insulation . Not so great in a fire . :D LOL! |
pine-o-cleen (2955) | ||
| 688842 | 2008-07-18 11:51:00 | Backing up what was said in post 45 by johcar - My wife has not had to use her inhaler since we got the HRV in. The coldest part of the house, we had a wall thermometer (till it got knocked off yesterday :crying and broke) , before we got the HRV in, if we got up in the middle of the night, it was regularly down to 4-5 degrees, since the HRV went in the coldest it has dropped to is 9. (Going by the HRV panel, which matched the wall thermometer exactly before I busted it) The whole house is warmer - how it keeps the rooms warmer when the roof is colder I don't know completely, but it does - but at the moment the roof is at 10, and the room is at 18. When I got up at 3.45 this morning - to many drinks :rolleyes: the room was at 14 with roof at 6. |
wainuitech (129) | ||
| 688843 | 2008-07-18 12:48:00 | [QUOTE=johcar;695365]As Wainuitech said - HRV systems have excellent filters (which need to be replaced every couple of years) . Ours was done about 12 months ago - the tech showed me the one she pulled out: filthy!!! Excelent filters:D Replacement every couple of years:D the tech :D :banana :banana |
Thinkagain (13493) | ||
| 688844 | 2008-07-18 18:20:00 | My house (to my surprise) has polystyrene panels fixed to the ceiling in the living room, held there by battens . Painted white, it was only when I tapped it and found it soft that this became obvious . Very good retrofitted insulation . Not so great in a fire . :D I have often wondered why polystyrene isn't used all the time in walls etc,is it because of the fire problem? I have 50 mm of polystyrene in my concrete floor . |
Cicero (40) | ||
| 688845 | 2008-07-19 01:14:00 | May i ask what sort of cost these HRV things are? and how much is the ongoing cost....eg power and filters.... not that its a option right at the moment, but down the track maybe.:illogical My son is asthmatic, and has severe excema at times, and my asthma has been playing up, and i think its partly due to the house. thank you. beetle:) |
beetle (243) | ||
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