# What Are Normal AC Pressures?

## What are normal pressures for r134a?

For the normal running pressure in an R134A system, the coil should run at 22 pounds per square inch at the lowest temperature, 45−20 = 25 degrees Fahrenheit.

Similarly, at the highest temperature, 60−20 = 40 degrees Fahrenheit, the coil should run at 57 psi..

## What is the normal car AC pressure?

When you hook up the gauge to your AC system to measure what the pressures are, on the low side the gauge should be giving you a reading somewhere between 25 pounds per square inch and 30 pounds per square inch.

## What are the normal operating pressures for r22?

For example, a high-efficiency condensing unit using R-22 typically operates with a suction pressure of about 68 psi and a discharge pressure of about 250 psi at an outdoor temperature of 95°F.

## What is the normal low side pressure for r22?

Your desired suction pressure is 33-48 degrees or 58-80 psi depending on the indoor temperature. What is the suction pressure of r22?…What should the low side pressure be in a r134a system?Ambient Temperature (°F)Low SideHigh Side70°35-40 psi140-165 psi65°25-35 psi135-155 psiJan 2, 2020

## What should AC gauges read on 134a?

R134a Pressure Gauge ChartAmbient Temperature (°F)Low SideHigh Side80°45-50 psi175-220 psi75°40-45 psi150-175 psi70°35-40 psi140-165 psi65°25-35 psi135-155 psi6 more rows•Jan 13, 2018

## What should my AC gauges be reading?

IMPORTANT – UNDERSTAND WHAT NORMAL GAUGE READINGS ARE.AIR TEMP (C)RED GAUGE (PSI)BLUE GAUGE (PSI)1050-10020-3020100-15020-3030150-20025-3540180-22525-351 more row

## What RPM should AC pressure be checked at?

1,800-2,000 RPM’sWhen checking the rate of charge of an AC system, the engine should be idling between 1,800-2,000 RPM’s and a large fan should be pointed at the front of the vehicle. You’re trying to simulate the vehicle is being driven down the road.

## Do you charge AC on high or low side?

After replacing a failed component the system is “flat” you are now ready to vacuum the system down and recharge it. The high side port should be on the line between the condenser and the expansion valve or orifice tube while the low side port will be on the return line between the evaporator (firewall) and compressor.