Section 8 — Evaluation of Refrigerant Charge

Now we assess whether the system contains the correct amount of refrigerant. By checking the refrigerant charge (either non-invasively or via weigh-in), we can verify that the HVAC system is operating optimally. To make RESNET compliance easier, we've curated this list of Temp Clamp Probes and Psychrometer Probes. Learn more about the RESNET standard, shop all compliant tools, or sign up to become a Home Energy Rater and lead the path to net zero energy homes.