re: Ways to keep house cool while waiting to repair AC situation.

Just a thought....

As CrawDude said, something is just not right. So thinking out side the box.

Could some of the inlet air duck insulation have come loose and get sucked up against the cooling coils? This would block air flow coming out of the unit and not cool the upstairs. ie. the air vent temperature would only be 5 or 10 degrees cooler that the inlet temperature.

In my house, the A/C filter is in the hall and I can stand on a ladder and see the A/C coils. Also, while looking at the coils, look at how the cooling coils fit up next to the duck. Years ago, I had a new coil installed. When I changed the air filter a month later, I notice a "big" gap where I could stick a finger in the gap. This allows air to bypass the cooling coils.

Had to get the company to come out to correct this problem.

Several people talked about possible air duct leakage. Also need to look at possible air leakage from the plenum coming off the unit.