Browse Forums Building A New House Re: Are these Air-Con units adequate or too much? 13Nov 05, 2021 9:37 am Leona33 Yourr r 16kw is more than enough. Its heating rating is 18kw. Zone your house. For daytime and nightime areas Really? The reply from the guy in Brisbane says it's big enough too. There are probably only 2 people in the house most of the time anyway. The house is built on stumps and bearers. Ducts will run under floor for downstairs, and run in ceiling for upstairs. My builder was saying either the ducts would be too long or too difficult to reach everywhere from just one unit. Re: Are these Air-Con units adequate or too much? 14Nov 05, 2021 9:37 am Leona33 Yourr r 16kw is more than enough. Its heating rating is 18kw. Zone your house. For daytime and nightime areas your assumption is that their cooling needs are neatly split between day time living and night time bedrooms and doesn't require whole home cooling (or a variation of) As does the calc you send me in PM. Where this falls over is if for example is if you have kids who utilise the upstairs bedrooms/rumpus while adults are downstairs during the day. A very common scenario. You cant cool both zones effectively or efficiently on 16KW. Hence the system needs to be sized to your needs. If your needs are neatly split in day/night time, great. That doesn't mean everyone else's is. Dark matter scientist, can breathe underwater, mind reader and can freeze matter just by willing it. Trust me, its in my sig. Re: Are these Air-Con units adequate or too much? 15Nov 05, 2021 9:42 am Noname Leona33 Yourr r 16kw is more than enough. Its heating rating is 18kw. Zone your house. For daytime and nightime areas your assumption is that their cooling needs are neatly split between day time living and night time bedrooms and doesn't require whole home cooling (or a variation of) As does the calc you send me in PM. Where this falls over is if for example is if you have kids who utilise the upstairs bedrooms/rumpus while adults are downstairs during the day. A very common scenario. You cant cool both zones effectively or efficiently on 16KW. Hence the system needs to be sized to your needs. If your needs are neatly split in day/night time, great. That doesn't mean everyone else's is. I see. There are probably only 2 people in this house for most of the time. No kids, and there is no activity/rumpus upstairs. So unlikely to spend any time upstairs other than sleeping. In saying that, I probably do want to switch on the AC before I go to bed in summer, while I'm still downstairs. Re: Are these Air-Con units adequate or too much? 16Nov 05, 2021 9:44 am Jason526 The house is built on stumps and bearers. Ducts will run under floor for downstairs, and run in ceiling for upstairs. My builder was saying either the ducts would be too long or too difficult to reach everywhere from just one unit. you do lose efficiency the longer the ducts are. Worth noting. That's why i keep saying speak to the installer (or even an installer youre not using to keep it unbiased) You wouldn't ask your dentist to give you advice for a skin disorder. Dark matter scientist, can breathe underwater, mind reader and can freeze matter just by willing it. Trust me, its in my sig. Re: Are these Air-Con units adequate or too much? 18Nov 05, 2021 9:47 am Jason526 Noname Leona33 Yourr r 16kw is more than enough. Its heating rating is 18kw. Zone your house. For daytime and nightime areas your assumption is that their cooling needs are neatly split between day time living and night time bedrooms and doesn't require whole home cooling (or a variation of) As does the calc you send me in PM. Where this falls over is if for example is if you have kids who utilise the upstairs bedrooms/rumpus while adults are downstairs during the day. A very common scenario. You cant cool both zones effectively or efficiently on 16KW. Hence the system needs to be sized to your needs. If your needs are neatly split in day/night time, great. That doesn't mean everyone else's is. I see. There are probably only 2 people in this house for most of the time. No kids, and there is no activity/rumpus upstairs. So unlikely to spend any time upstairs other than sleeping. In saying that, I probably do want to switch on the AC before I go to bed in summer, while I'm still downstairs. if there are only two people, you may considder ducted downstairs, and splits up top. Because 14kw seperate system for upstairs with only two people will be expensive to run.. You wont be able to just run it for one bedroom and will likley be a waste of energy. but yeah have a think about your usage patterns and where you will be in the house. You always with your partner? Dark matter scientist, can breathe underwater, mind reader and can freeze matter just by willing it. Trust me, its in my sig. Re: Are these Air-Con units adequate or too much? 19Nov 05, 2021 10:09 am Noname Jason526 The house is built on stumps and bearers. Ducts will run under floor for downstairs, and run in ceiling for upstairs. My builder was saying either the ducts would be too long or too difficult to reach everywhere from just one unit. you do lose efficiency the longer the ducts are. Worth noting. That's why i keep saying speak to the installer (or even an installer youre not using to keep it unbiased) You wouldn't ask your dentist to give you advice for a skin disorder. I'll try to get another opinion from a different installer. I do have a second quote of one Bravis 15kw unit, but the cost is almost the same as two Daikon units. There is one guest bed downstairs and 3 beds upstairs only. The guest bed might get turned into exercise room or something. I'd assume we will have either downstairs turned on or upstairs all 3 rooms turned on if family/friends are staying. Re: Are these Air-Con units adequate or too much? 20Nov 05, 2021 11:57 am Noname Leona33 Yourr r 16kw is more than enough. Its heating rating is 18kw. Zone your house. For daytime and nightime areas Where this falls over is if for example is if you have kids who utilise the upstairs bedrooms/rumpus while adults are downstairs during the day. A very common scenario. You cant cool both zones effectively or efficiently on 16KW. I can cool the whole house (all zones on) in a 35+ degree Brisbane summers day no issue with a 16kw, with the house including some huge single glazed western windows and large void. Just standard roof and wall insulation too - nothing special. Of course you should do your own research but I reckon you'd be fine with 16kw. As stated above i'd consider ducted down and some splits for upstairs for optimal efficiency. Ducted isnt most efficient but certainly looks best, easy to control, quiet etc. 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 5947 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 |