Browse Forums Heating, Cooling & Insulation 1 Oct 01, 2007 6:33 pm hi just wondering wether anyone can advise me on the following. im considering fitting ducted air con into my soon to be built house. i went and got a price on installing ducted cooling. The sales person recommended the high ducted cooling units(units that sit high on the roof) .HE said a Low Profile unit wouldnt work as well. now im confused as another company told me that isnt so. has anyone heard of this before. ? building through PD. Re: low profile ducted cooling units 2Oct 01, 2007 7:29 pm On the roof they are most likely talking about an evaporative unit, (it will only cool hot dry air effectively) where as the ground level type is generally a reverse cycle hot or cold type of unit and uses a compressor. these are more expesvie to run as a cooling unit over an evap. I would have thought an evap in Melbs would be fine for your hot dry summers like SA has.
Steve. Re: low profile ducted cooling units 3Oct 01, 2007 9:48 pm sounds like your talking about a few systems at the same time...
Yak_Chat is correct - evaporative cooling units sit on the roof. The sales person is possibly talking about high profile and low profile evaporative cooling units?? High profile being the big square box shape - low profile being the units brivis make that are contoured to the roof pitch... a common misconception is that there is less cooling area on the low profile units, this isn't true - they make the pads a lot thicker to compensate for the loss of area... hopefully this is of some help - feel free to ask more questions - just let us know if we are on the right track!! Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public ducted air con 4Oct 02, 2007 11:25 pm thanks mark and yak chat, im clueless on air con but i will learn. thanks for clearing up the misconception about low profile units. yes the sales person was talking about low and high profile units on the roof. ive also heard from different people that evaporative ducted cooling leaves ur house and contents damp? and dosent work as well in very sticky weather? refrigerated ducted cooling is better but more expensive to install than the ducted evaporative cooling.? mark just had a look at ur web site do you only work around the inner suburbs of melbourne. ? Re: low profile ducted cooling units 5Oct 03, 2007 7:29 am hi clath,
everything you just mentioned about evap cooling is true. Thanks for looking at our website, yes we only install within inner east melbourne... we used to quote all over the city but found that almost all of our clients were based in that area, so we reduced our coverage just to there.... we highly recommend gas ducted heating with add-on a/c for the huge cost savings when running the gas heating. Either way the cooling is going to be electric. A ducted reverse cycle unit (like Daiken, Fujitsu, etc etc) are electric heating and cooling - the heating costs can be very expensive - so if someone recommends that type of system which most do nowadays, be sure to get the avg running costs before making a decision... if you send me an e-mail through our website with your location i'll let you know if there are any good installers in your area that we'd recommend. cheers! Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public Re: low profile ducted cooling units 6Oct 06, 2007 1:06 pm Hey guys, we too were looking at the Brivis Contour series for our new house, (had it in our past 2 houses- great unit) but we've just been told about the Brivis Ice series (refridgerated). There were no real issues, except it struggled on really really hot days and on humid days, i remember once laying all our towels on the timber floor and still going flying for a six on the floor!
The Ice series runs through the same ducts as your brivis heating unit and uses the fan in the heater to distribute the air. They can be retrofitted to brivis heating units as long as the ductwork is the larger size to accomodate the cooling aspect. There is still an external unit, similar to the standard split systems, but it runs through your ducts. We will be building soon in Berwick, single storey, 10 points (for ducted system), 250m2 in house, Htg unit is HE30i (being installed by builder "H', any ideas on contacts in the area Mark DHC who have experience in these units? What are your thoughts on them? We were told that the running costs were cheaper with the Ice than the LG or Daikin systems, but your website states they are the same... Would love to know if anyone is getting one or already has an Ice series cooler? Re: low profile ducted cooling units 7Oct 11, 2007 3:43 pm The brivis ICE series do run a little cheaper than the rest as they are one of the most efficient ducted a/c units around. The big savings come in winter when your heating the house - gas heating is SO much cheaper to run than electric heating.
I know some people in your area but I don't believe any of them are real experts in add-on a/c - i don't want to recommend someone to you that i don't know does great work. feel free to ask more Q's if you have them Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public Re: low profile ducted cooling units 8Oct 11, 2007 4:03 pm I though reverse cycle air-conditioining was cheaper than gas for heating.
See the article at www.synergyenergy.com.au/Business_Segme ... ating.html, which states, "Reverse cycle air conditioning is a very efficient form of heating and has significant advantages over other heating sources: Heating costs are lower than natural gas or electric element based heating" The graph below shows the cost of various space heating. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Demolition August 2009, Construction Started September 2009, Completed December 2010 Re: low profile ducted cooling units 9Oct 12, 2007 3:50 pm For space heating perhaps.... which is what the graph below shows. Are there any graphs showing ducted system comparisons?
There is one below - pages 7 and 8 show the differences. http://www.energy-toolbox.vic.gov.au/dmdocuments/schools_information/secondary/secondary_supprt_matls/choose_heat_sys.pdf Dynamic Heating & Cooling - http://www.DIYheating.com.au DIY Ducted Heating & Cooling Systems DIRECT to the public 4 6201 If you can calculate the reasonable charged head from let's say 100mm below the gutter to the top of where the vertical riser's horizontal discharge pipe will be, that… 11 17530 Those span tables can be pushed a little for a low deck if you dont mind a little flex. Last deck I did, I pushed it a little and it was still rock solid - no noticeable… 6 13757 |