You can't fix what you don't measure. That's why Rob Falke, president of National Comfort Institute (Sheffield Lake, Ohio), recently introduced SERâ„¢, a new field rating system for installed air conditioning and heating system efficiency.
SER, CSERâ„¢, and HSERâ„¢ are acronyms for system efficiency ratio, cooling system efficiency ratio, and heating system efficiency ratio. The tests depict the ratio of factory-rated equipment Btu to actual field-measured Btu, Falke said.