Question: What is a BTU?

BTU stands for British Thermal Unit and is a unit of measure of cooling or heating capacity. 1 BTU is the amount of heat required to raise (or lower) the temperature of 1 pound of water 1 degree Fahrenheit. There are 12,000 BTU?s in 1 Ton of Cooling. It is also the...

Question: How are home heating furnaces rated?

Furnaces are rated by the Annual Fuel Utilization Efficiency (AFUE) ratio, which is the percent of heat produced for every dollar of fuel consumed,or how efficiently a furnace converts gas into heating energy. Its AFUE rating is measured as a percentage. Like the...