if its a slap bang mass builder thers a very good chance you have structural issues.. insulation missing. among other things
the temperarture issse is do to lack of insulation or improper insulation no vapour barrier.. also for the forced air is there a feed duct and a cold air return.. its common idiot builders only have a cold air return which causes this
call the builder make them do a complete walk through, if they dont respond within a couple weeks call your local home warrenty office or home builder association. their the ones that will deal with the issue
the temperarture issse is do to lack of insulation or improper insulation no vapour barrier.. also for the forced air is there a feed duct and a cold air return.. its common idiot builders only have a cold air return which causes this
call the builder make them do a complete walk through, if they dont respond within a couple weeks call your local home warrenty office or home builder association. their the ones that will deal with the issue