Useful A/C Guides

What is PAG and Ester oil? Do I need them to recharge my A/C?
Discover what A/C compressor oils are, how they work and whether or not you need them to recharge your A/C system.

Why is my car‘s air conditioning not working after winter?
Air conditioning is one of the essential things in life, but what do you do when it’s not working in your car? Read our blog to learn about how winter may have affected your A/C.

Getting Your A/C Charge “Just Right”
Is your car’s A/C blowing warm air? Discover how to re-charge your Air Conditioning System with A/C Pro® – Following these quick and easy steps.

How a Car A/C Works or Doesn’t
Tired of your A/C blowing warm air? Discover how to check your car A/C works (or doesn’t) – and how you could save money with simple repairs.

How Hot Does Your Car Get?
Cars left in the summer heat can often feel like stepping inside an oven. But how hot does your car get in the sun? Stay cool and find out why with A/C Pro®.

How to Find My Car’s Low Pressure A/C Port
Recharging your car’s A/C but not sure where it goes? We’ve got you covered. Read our simple guide on how to find the low-pressure A/C port with A/C Pro®.

The Evolution of Auto Air Conditioning
Three-wheeled automobiles to short-term trends, the history of auto A/C is long and heated. Discover the evolution of air conditioning and more with A/C Pro®.

How to Cool Down Your Car as Quickly as Possible
Is your car overheating in summer? Discover our guide on how to cool down your car quickly. Explore even more tips and tricks with A/C Pro®.

When You Shouldn’t Use A/C Pro®
When dealing with auto A/C troubleshooting, some issues can’t be fixed with DIY alone. Read our guide on when you shouldn’t use A/C Pro® to fix your A/C.

A/C Blowing Warm Air
Your car’s windows can accumulate dirt and dust particles, road grime, tree sap, water spots, bugs and bird droppings. Knowing how to clean auto glass and how to keep your windshield clean is essential for safe driving.

How to Diagnose Your Car’s Air Conditioner Using A/C Pro®
Understand how to know what’s wrong with your car’s A/C and fix the problem, all for less than the diagnosis alone would cost at most auto repair shops.

How to Keep Your Car’s A/C from Going Bad Over the Winter
Car air conditioners sometimes break down in winter due to lack of use. A/C Pro® explains the simple way to make sure it’s still running strong when summer returns.

What product does my car need? (R-134a or R-1234yf?)
Not sure if you need R-134a or R-1234YF refrigerant? A/C Pro® is here to help you understand what type of refrigerant your car needs.

Refrigerant Pressure Charts
Check our A/C Pro® R-134a system pressure chart for guidance using A/C Pro® recharge products. Find quick and easy help to interpret your pressure reading.

Coolant vs. Refrigerant
A/C Pro® can help you understand more about your car’s A/C system – learn what coolant is, how it works, and how it’s different from refrigerant.

The ABCs of Automotive A/C Recharge
A cheatsheet of everything to do with your car’s A/C, so you can feel confident using our A/C Pro® recharge products. There’s no need to call a mechanic!

How to Fix Common A/C Problems
There’s nothing worse than the A/C blowing warm air in your face on a summer day. Check out our A/C Pro® troubleshooting guide for faulty A/C systems.

Guide To A/C Compressors
Need some advice from A/C Pro® about compressors? Look no further – learn what a compressor is and what it does.

How Your Car’s Heater Works (Or Doesn’t)
An explanation of how your car’s heater works, and how to diagnose the problem if it’s not keeping you warm.
A/C Port Finder
Discover how to recharge your car’s A/C with our low side port finder. Our database has vehicle-specific advice on how to find the right port, making recharging a breeze.
Locate port Other ways to find your vehicle’s car port A/C spec database or view our port diagram.