Here's something you may not have thought about before: how do you test the efficacy of an air conditioner? Air conditioners are surprisingly complex pieces of technology, as they need to carefully ...
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How to recharge your car's a/c

In this video, learn how to refill your car or truck’s A/C system with refrigerant, specifically R134a, the most common refrigerant. This guide covers the procedure for topping off your system, ...