For unexplainable reasons there is a lot of inconsistency in rating equipment. While, as is was discussed here the electrical motors are rated for output power the gas heaters and burners are rated in BTU input. Then, again the AC units are rated in "tons of refrigeration" which is also an output factor.
I have no idea why would one need to have the input rating on a heater. The nameplates also do not contain any efficiency on them. I guess the only explanation is the fact that the customer feels better to see a higher number when he buys the heater. Typical! A total lack of inchoerent national standards. -- _______________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup Have you downloaded the latest calling software from Net2Phone? Click here to get it now! http://www.net2phone.com/cgi-bin/link.cgi?157
