If they still are warmer then the downstairs rooms close the downstairs vents more.
Improve 2nd floor air conditioning.
Of course this means that your second floor has not yet sufficiently cooled.
Not only that but heat gain.
The usual culprit is that heat is being trapped on the second floor and that the second floor return capacity is insufficient to remove that heat.
Make the second floor return vent duct bigger.
Uses of ceiling fans electric fans and leaving doors open to increase circulation also have some effect.
Better yet if you have one you may find relief 10 to 15 degrees cooler in the basement.
Set your air conditioner to run the fan continuously.
Positioning a window air conditioner in those places will allow the unit to better regulate the heat on your second floor.
If a heater or air conditioning unit sits in a basement and is separated from an upstairs bedroom by a garage attic and or crawl space air can get lost in those areas along the way reducing the amount of cool air that makes it to the upstairs room.
Hot air rises so the second floor is naturally going to be warmer.
Depending on the size you get you can spend as little as 150 or a good unit and less than 20 each month to run it every day.
I ve noticed that the basement and main floor receive a lot of heat and air conditioning but the upstairs does not get much air force out of the vents.
Check the temperature of the second floor rooms.
Upper floor rooms can be difficult to heat and cool.
To handle this problem there are four common ways to improve cooling on your second floor.
Keeping upstairs rooms adequately cooled in summer puts the homeowner up against a basic fact of physics.
If i keep the bedroom door closed during the day i will notice at least a 10 degree difference in temperature.
How to improve central air on upper floors.
Sometimes the difficulty is caused by leaky joints ducts or even the layout of a home.
Ensure that the air conditioning unit is on and wait one hour.
Some common reasons that your second floor is too hot include.
Window ac units are quite affordable too.
However when the thermostat senses that the temperature on the main floor is the temperature your hvac system has been set for it will turn off the ac.
This draws the warm air from the upstairs through the air return and circulates it through the rest of the house leveling the temperature.
Despite your air conditioner repair man saying the ac is tuned up and running properly the bedrooms on the second floor are so hot many in the family choose to sleep downstairs.
The vents are closed in the basement since it s not used as living space.
Set the fan to be on all the time.