Browse Forums Heating, Cooling & Insulation Re: Maintaining good air quality in an energy-efficient hous 21Dec 19, 2013 11:17 am There are systems like Ventis and others that will use the external air or ceiling air when suitable to heat or cool the house (see my post at http://onsolution.com.au/blog/2012/ventis-fresh-air/). These systems are not able to heat/cool all day, but only when the conditions are right. Practically, even in the middle of winter, the roof cavity will normally exceed 25degrees so why not use that heat? In summer, the outside air is often below 25degrees at the end of the day, while the inside of a house is a sauna with the bricks radiating heat. I'm pushing the boundaries by trying to use the cool air under my house in winter. Yes, this all relies on having very good filters. Re: Maintaining good air quality in an energy-efficient hous 22Mar 05, 2014 3:23 pm aza0, what kind (brand) of system did you install? We are looking at something similar, but a fair bit bigger I suspect (at least its more expensive, not the best guide). The best value for money I have been able to find so far has been this mob: http://www.atlantics.com.au/atlantics-d ... ystem.html Quite a good system and about 30% cheaper than a more well publicised brand I have seen, but always interested in alternatives, at least until I pull the trigger. Re: Maintaining good air quality in an energy-efficient hous 23Mar 07, 2014 8:34 am I used this mob: http://www.airchange.com.au/ But the link you provided looks really good. Do they have a option with a carbon filter? Have you asked for a price? Please keep us all informed Re: Maintaining good air quality in an energy-efficient hous 24Mar 07, 2014 10:11 am I could never get a response out of airchange, they only seemed interested in commercial stuff at the time. I dont know about the carbon filter, whats it for? The filter that comes with the system is medical grade and remove pollens, dust, bacteria, etc. I live in a fairly tree-dense outer suburb, so my outside air is pretty good anyway. I have several bathrooms/toilets and a kitchen for intake and 5 bedrooms and a living area for outlets and the whole lot is about $8,800 fully installed. I'm really pleased, I feel for what you get and the quality/efficiency its a very good deal, but I can't help keeping an eye out for what others are doing. Re: Maintaining good air quality in an energy-efficient hous 26Mar 25, 2014 11:13 am Ahh, ok. Well there shouldn't be too much in the way of smells coming from the outside air, not sure what will make it through the standard filters. I'll let you know how it goes in six months hopefully! go upvc window frames ensure insulation under colorbond. not just sarking, lighter color roof also not sure if you have seen this viewtopic.php?t=5823 last couple of pages… 4 111073 10 years ago was a different software than we use now. it has had a lot of changes over the past years. Improvments to the software and changes to how Nathers models need… 8 1584 How do you remove one of these ceiling air con vents? And is it possible to disconnect the duct joined to the vent from inside the house, without going into the roof cavity? 0 6097 |