balancing out air flow in duct work

[Tom7227]

I have a family room that is the lowest point in the house and it is cold. I am interested in trying to figure out how much air flow I need to balance it out. There are hand held anemometers on the Net for $40. Anyone know if they would work or what/where the correct equipment could be obtained or rented? I suspect there's some formula for figuring this out as well. Any advice will be helpful since I'm not getting very far just holding a piece of toilet paper up to see how much if flutters.

Thanks for your help.

Tom

[Tom7227]

This is the first time I seem to have stumped the FMer's.

[Surface Tension]

See Dtro's thread,

Lowest room in the house as in basement that was finished off?

If so no consideration when the furnace was put in as to heating that as living space and probably not considered when finishing it off either.

Add cold air return and heat register.

If that is out of the question then a supplementing heat source can be added.

Electric base board or portable electric heater.

If that isn't that case then fully open registers in the room you need more heat in. You could try and partially close one register to increase an other but you could create a problem.

As far tools for the homeowner, I think most use the feel test.