Browse Forums Heating, Cooling & Insulation 1 Jul 01, 2010 4:45 pm In summer, our AC makes our house freezing even with the thermostat set as high as 27 degrees & now in winter, even when set at 19 degrees, our home is too hot! We can never get a comfortable temperature in our place Before I ring our AC installer & ask whether we're running it incorrectly , I'd just like to run this question by the forum. Is it possible to have an AC system that is too poweruful for a house? Were we sold a unit that's just too large for our house? Built the Eden Brae Cambridge 34 Family with Boston Corner Facade Re: Reverse Cycle AC too good! 2Jul 01, 2010 4:50 pm Southies - did you also add lots of insulation? We have found our home is quite toasty at present until around 5.30pm when the sun disappears. We turn the ducted on but can only have it on for an hr or so as it gets too warm. Even moreso if we turn certain vents off - ie more air pumping to less space. We did add extra insulation into our walls - both internal and external - so along with a really powerful motor I think that is what is making ours work really (too) well. Some things are worth waiting for. Re: Reverse Cycle AC too good! 3Jul 01, 2010 4:58 pm Hi Southies, What is the total power of your machine vs. the size of your house? How many outlets do you have and how many zones? Can you run all the zones at once? (BTW, this sounds good to me, you only need to run it for a short period to get into the comfort zone - unless, once you reach your desired temperature, it then quickly changes back to be in tune with the external temp???) My signature is distracting people from my wise posts ... Re: Reverse Cycle AC too good! 4Jul 01, 2010 5:06 pm The first thing I would think of is where is the thermostat located ? For example, if it's in a drafty spot, then in winter the temperature probably isn't getting to the correct level at the thermostat, and as such, the rest of the house is heating up before the thermostat is telling the system to turn off (same with cooling for the summer). You'll probably also find that some rooms in the house are warmer than others (as each room isn't independently temperature controlled in a multi room ducted system). I couldn't see why a unit too large for the house would create a problem. I am no expert, but to me this would mean that the unit just warms or cools the house faster than a smaller unit (and as such turns on and off more often in order to regulate the temperature). Blog is now up - http://www.jbdave.blogspot.com/ Re: Reverse Cycle AC too good! 6Jul 01, 2010 6:51 pm Kyton, we have insulation in all the outer walls downstairs & in all internal walls upstairs (as well as external walls again). It's quite uncomfortable in summer & now in the cold. Our place gets quite cold during the day - all living is at the southern end of the house - but we perseverse until about 5 in the arvo, when we turn on the AC. Like you, we have to turn it off after an hour or so because we get too hot Built the Eden Brae Cambridge 34 Family with Boston Corner Facade Re: Reverse Cycle AC too good! 8Jul 01, 2010 6:54 pm jbdave The first thing I would think of is where is the thermostat located ? Built the Eden Brae Cambridge 34 Family with Boston Corner Facade Re: Reverse Cycle AC too good! 9Jul 02, 2010 5:32 am Southies jbdave The first thing I would think of is where is the thermostat located ? Some systems will have multiple thermostats and you can change between them... With a Daikin you can set the system to use the one at the return air or the one where the controller(s) is(are)... Re: Reverse Cycle AC too good! 13Jul 02, 2010 6:34 am Southies Thanks IceMan It's an Actron system -SRV190. 8 zones 35 sq house That looks like an ESP Plus system to me... They are very sophisticated and cannot be set up correctly if you're getting extremes like this... I'd get the installers out to have a look... Failing that call the ActronAir service centre up in the Hills district on 1800 119 229. The ActronAir service and support is first class and I'm sure they'd sort you out with a visit... Re: Reverse Cycle AC too good! 15Jul 02, 2010 9:18 am Open some windows. Yeah I know it defeats the purpose but you need to bleed off some heat. Re: Reverse Cycle AC too good! 16Jul 02, 2010 10:14 am We had a bit of a fight with Council when we submitted our house plans as our living areas are all facing south - they wanted them north facing. Our bedrooms are all facing the north. Not sure whether it is because we are single storey or the amount of insulation we added but our home is really lovely - warm until the temp drops quite substantially. The good part for me is that all the bedrooms are toasty warm during the day - which when the munchkins are still having daytime naps is wonderful. Even during the summer it was only on the really disgustingly hot days that we needed the a/c on permanently - and never ever over night. Hope they can look into the settings for you Southies and get it right. Some things are worth waiting for. Re: Reverse Cycle AC too good! 17Jul 02, 2010 1:44 pm But are the living areas cold on winter days? When the munchkins grow up (and they quickly do) they will spend less time in the bedroom during the day. Re: Reverse Cycle AC too good! 18Jul 02, 2010 1:50 pm Hiya Dymonite - no the living areas are all pretty toasty warm as well. Not sure why but they receive morning sun and the timber floors seem to help. Even now it is 13 degrees outside with no sun whatsoever - very grey and gloomy. Temperature inside home is 23 degrees and quite comfy. Some things are worth waiting for. Re: Reverse Cycle AC too good! 19Jul 02, 2010 4:40 pm Nathan SteelFab Open some windows. Yeah I know it defeats the purpose but you need to bleed off some heat. Built the Eden Brae Cambridge 34 Family with Boston Corner Facade It will be neat but you won't have much freeboard. At least they are not weep holes. Are you in a high intensity rainfall region? The regulatory slope is only required… 3 8287 Firstly, if your house is still under builder's warranty (10 years in Victoria) you should have no need to crawl into roof space but let the builder handle it, unless you… 3 5646 Not sure if that works? I was told the issue is the headspace clearance requirement on step 4. My builder is proposing shifting the beam 310mm towards the kitchen...I'm… 2 2666 |