guys.. is good or bad for the aircond if there is an air ventilator on the ceiling as in the example pic below



what i mean, before having airconds, my house has a roof turbine ventilator installed.. Now, I'm also installing an aircond inside the room. AT night time, the temperature inside the room is much cooler with the aircond, around 26 celcius, but the temperature above the ceiling (inside the roof) is much hotter, around 33 or higher.



I wonder whether the hot roof temperature will 'travel' down into the room, causing the aircond to work much harder.. Should I seal those air ventilator's opening on the ceiling?

This post has been edited by zeese: Oct 18 2013, 04:46 PM

Guys..

i understand that 10 feet copper piping is usually provided for free, but that is only when the installer comes from the same shop that we bought the come..

if I buy aircond from different shop, and ask different installer to install the aircond, does the installation price (~rm200) still includes free 10' copper piping or not?

usually, how much does it cost to pull a new wire from DB box for aircond wiring?

if you really want to convince yourself, go measures the exact dimensions of the room, and then, fill up the btu calculator...