The following is a quick overview of procedures needed to properly charge your air conditioning system:
Refrigerant charging might be the least understood practice in the air conditioning industry next to the number one problem–airflow!
Tools needed to do the proper job:
- Magnahelic Differential Pressure Gauge (to verify the correct airflow)
- Refrigerant gauges (that have been calibrated)
- Accurate thermostat probes (that have been calibrated)
- Superheat charging charts
- Temperature split charts
The following procedures are a MUST:
- All coils, filters and blower wheel must be clean
- Airflow must be known within manufacturer’s specifications
- Outdoor temperature must be above 60 degrees and indoor above 70 degrees
- Indoor wet bulb temperature must be known
- Once the charge has been adjusted, waiting 15 minutes to verify accuracy of adjustments
AC Truth 