Thermal HVAC The product seems to operate properly, what little I have used it. I have used it for one sheet metal take off and it worked very well. I checked the...

More options & facilities Dear Sirs;

Thanks to give me the chance to write my comments at your program Duct Calc.

I would like to know, if the...

Very cool I liked this program. It is quite handy.

However, it would be nice if it would be possible to ratchet the sheetmetal gage up a thickness or 2...

Not Bad I found the program very easy to use.
Provided good spread of useable information.
Would like to know if the program can be adjusted to allow...

Duct calculator. Duct calculator what I meen that, I need duct sizer which is given to us the size of ducts with relevant cfm and friction, thanks.
If you have...

Duct Calc Lite Easy to use and will do well for smaller jobs. Will keep using until I get a better feel.

Measurement units Only english imperial units are available, not much use for me as we are using metric SI units here.

Thank you