Cold air returns are typically located near the ceiling in a room because cold air is denser and heavier than warm air. Placing the returns near the ceiling allows the colder air to be efficiently drawn back into the heating system for re-circulation, helping to maintain a comfortable temperature in the room.
Floors in heating season, ceilings in Air Conditioning season
In the winter, it is generally recommended to close the air returns on the floor. This is because warm air rises, and closing the floor returns can help prevent cold air from being drawn into the heating system, allowing the warm air to circulate more effectively. Keeping the ceiling returns open can help maintain proper airflow and balance in the heating system.
Only the low air returns have dampers, and they should be open in winter, so they can suck in the lower cold air (cold air sinks), and in summer the dampers should be closed, so the high air returns suck the hot air near the ceiling (hot air raises)
First,I would check the houses infiltration rate and try to improve it. Second I would look at the fuel efficiency rating of the equipment and improve things there if it is an older unit. Vent placement in your case is trivial, returns belong down low where the cold air is.
The cold water faucet in the kitchen is typically located on the right side of the sink.
heat rtises, cold sinks.
When a cold air mass moves into an area where a warm air mass is located, it is called a cold front. Cold fronts typically bring cooler temperatures, precipitation, and sometimes thunderstorms as the denser cold air displaces the warmer air.
Ceiling. Cold air fails
Condensation is always caused by a cold object or breeze coming into contact with warm moist air. I would look for infiltration of cold air near the ceiling beam and then try to seal the air leak.
he returns occassionally
You do not need cold air returns in every room. Normally your warm air registers are close to your outside walls, your cold air returns which are much larger are placed in the center of your house . There may be one or more cold air return depending on the size and layout of your home.
The cold water is located on the left side.