AC Pro

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A/C Basics

What color are the caps on the low and high pressure automotive air conditioning service ports?

Can I add refrigerant to my vehicle when it is cold outside.

How do I find the low pressure port on my Ford Focus?

Can I use your products in my hybrid vehicle?

Can I recharge my A/C system myself?

How do I use an R134a charging hose to add/recharge R-134a refrigerant to my system?

What should my vent temperature be?

Can I just vent the refrigerant if it is overcharged?

Why is there a smiley face on the bottom of some of your cans?

Why does the blue bezel on some of your gauges turn?

Why does my gauge go into the red/high pressure?

My pressures are correct but I am still getting warm air from the vents, why?

Does refrigerant go bad?

Is an overcharged system dangerous?

How to recharge with a trigger style recharge hose?

How to recharge with a T-handle or Gauge-Handle style recharge hose?

What is Ambient Temperature and what should my pressure readings be?

I get two pressure readings while checking my low-side pressure, which one should I use?

Do I need to vacuum out my system before charging?

How much refrigerant should I put in?

If I put in refrigerant (top off), do I need to add oil too? If so, what type and how much?

My A/C is blowing cold but not as cold as I would like it. Will adding additional refrigerant make the air colder?

Can I add R134a directly to my R12 system?

What about so called "drop in" refrigerant that I see advertised on the market?

How do I locate my low pressure port?

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