How to Safely Read Freon Gauges


With the current cost of energy you might have been spending a huge fraction of your budget on your air conditioning system. However this has been greatly reduced by the introduction of Freon to the system. The chemical is very dangerous and as such requires proper handling in order to avoid leakages as well as mechanical breakdown to your system. To avoid this in the course of your utilization of this HVAC technology, here are guidelines on how to read your Freon gauges properly so that you know when your Freon is leaking or when you need to an air conditioner tuneup.

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A prerequisite to using Freon gauges is the manufacturers manual to compare the expected operational range to the gauge readings of your AC. To do so follow the steps below, remember that Freon is very dangerous so be very careful not to cause any leakage.

1) First put your air conditioner off then using your user manual, locate the high and low side fitting lines of your AC.

2) Once this is done fit the red or high side hose of the high side gauge to the high side fitting of your AC line. Normally quick release valves are integrated within the fittings to prevent leakage.

3) Now fit the blue or low side hose to the low side of your AC line. If this is done properly and no signs of leakage are seen then open the knobs on both the high and low gauges and then you will notice that the needles move, check this readings against those that are written on the user manual this are conventionally called static gauge pressure, if they are within range then move to step three and if not then technically your AC has a problem. This might suggest a leakage or just an indication that the Freon level is low.

4) Now turn on the AC and take the new readings on the gauges. Compare this with the manufacturer’s range but normally they are supposed to be between 60 and 70 psi for the high side and 220 and 250 psi for the low side line. If your AC pressure gauges are not within range then it means that something is wrong with your system and you need to seek an expert.