Fast solutions for complex problems

What refrigerant is used in RV AC?

If your Travel Trailer is older it was probably designed to take R22 Freon, if it is newer it may take one of the newer types of Freon.

What side do you charge 134a?

If you have a set of gauges, you can safely charge liquid into the low side. Just keep the low side gauge below 40 PSI while you charge. This will make the freon boil inside the charging line, it will be a gas by the time it enters the compressor.

What happens if you charge AC on high side?

High loads will make sure that the TXV metering device is fully open and delivering the maximum amount of refrigerant to the evaporator. At these higher evaporator heat loads, the receiver will be at its lowest level.

How long does it take for AC recharge to kick in?

Refrigerant can leak slowly from your car’s air conditioning system over time, but recharging the system so it once again blows cold air is an easy DIY task and takes just about 15 minutes.

Why is my camper AC not blowing cold air?

One reason for an RV air conditioner not blowing cold is clogged condenser fins and external leaks. Dirt, leaves, and spiderwebs can collect in the condenser coils, so first make sure the fins are clean. Also, you can use the foil tape to seal the blower box from the outside.

Can RV AC be recharged?

When your camper’s air conditioner runs out of refrigerant, it will need to be recharged and can be done by refilling the refrigerant. Some air conditioning units may also need to be recharged more often than others. If you have never recharged a camper air conditioner before this task may prove to be quite difficult.

Does the car need to be running when adding Freon?

First a few Rules you need to always follow. 1. Since your car engine is running to charge the AC system there are moving belts and pulleys,fan(s) and very hot parts. You can easily loose your fingers if you put them where they don’t belong!

What should gauges read on 134A?

R134a Pressure Gauge Chart

Ambient Temperature (°F) Low Side High Side
90° 50-55 psi 250-275 psi
85° 50-55 psi 220-250 psi
80° 45-50 psi 175-220 psi
75° 40-45 psi 150-175 psi

How do you tell a high side from low side AC?

The low side of the system where the freon goes is always the fastest of the two hoses comming off of the compressor. The high side of the system is the smaller of the two. And on a 134a system the low side port is the bigger of the two. Hope this helps.

Do you fill AC on high or low side?

You only add refrigerant to the low side of the AC system. This helps draw in the refrigerant and prevents damage to the compressor. Normally the fittings are also different on the high/low sides to help facilitate this.