What size radiator ( in BTU's) is the best for my room size

duebdue52101

I am installing several old cast iron hot water radiators in my home. Some are rather large. How do I calculate what BTU's are required to best heat that room?

Wayne_8

How

Read the chart Deb

jerry scharf

donig a heat loss calculation

Debbie,

The only way you know is to get all the information about the room into a program that can compute the amount of heat needed. It's definitely doable, but it will take you a bit of time to get the answers. There is link on the pipe on the left to get free heat loss software from slant fin.

Once you have that, then it's a matter of how much radiator at what temperature is needed to provide the needed heat. Unless you're planning to do the work yourself, it's probably better to work with someone who will do the install for this part. Make sure the person you hire has a real clue about doing this work. You can look at the work in some of the other threads to see how good it gets.

good luck,
jerry

Weezbo

accurate information...prereq.

whew. Building envelope,insulation? vapor barrier?no clue?windows?triple pane? how many Square feet of floor space?outside temp during coldest days of the year ? cha an example is well insulated ,10000 sq ft vs. no garage door 10000sq ft easier to get a handel on.:)