"TURTLE" wrote in message
...

"RJ" wrote in message
...

I live in an air-conditioned mobile home.

There are no return ducts.
Air is returned to the furnace in the utility room.

Some rooms are quite cooler than others,
so I've closed the outlets in those rooms.

Friends tell me that if you close the outlet ducts,
theres a chance of freezing up the cooler coils.

Possible ??

Any rule-of-thumb for measuring/avoiding this ?


rj

This is Turtle.

Years ago there was 2 rules of thumb about closing vents.

1] don't do it.

2] Never close more than 1/3 the volume of air off or 1/3 of the number of
vents in your home.

TURTLE


I could never understand this, when you close off unused rooms aren't you
lessening the load on the system over all? In heating and air-conditioning?
Or is it worse for one verses the other??

Thanks, Rich