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HVAC
NCI Residential System Performance Specialist
Performance Benchmarking
Knowledge Check
Performance Benchmarking
Knowledge Check
Knowledge Check
1 / 14
According to NCI benchmarking principles, when should a coil cleaning be triggered in a performance-based maintenance program?
A
Only when TESP exceeds 1.0 inches w.c. indicating severe blockage
B
Every 6 months regardless of coil condition
C
Whenever the homeowner reports a comfort complaint about cooling
D
When coil pressure drop exceeds 1.5 times the baseline clean-coil value, or delta-T shifts 3+ degrees from baseline
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