This video provides practical advice on troubleshooting and fixing common car air conditioning issues yourself, potentially saving significant money compared to mechanic costs. The key takeaway is that you can accurately refill your AC refrigerant based on weight using a simple scale, rather than relying on complex pressure readings that are affected by external factors like temperature and humidity. The speaker also emphasizes checking other easily fixable problems like radiator cooling fans, cabin air filters, and even the car's battery, which can all impact AC performance. Finally, the video discusses using sealant for small leaks, but stresses the importance of properly evacuating the system and using the product correctly for it to have a chance of working.

• 00:00 The video discusses why capacitors fail in air conditioning units.
• 00:30 The presenter demonstrates how to test a capacitor while the system is running, measuring voltage and current for both the compressor and fan motor.
• 01:26 The test results show that both the compressor and fan capacitors are good and within their specified microfarads rating.
• 02:41 The presenter shows that the capacitor has failed, causing both the fan and compressor to stop working.
• 04:11 Capacitors can fail due to overheating, causing the dielectric fluid to expand and press on the capacitor shell, leading to bulging or leaking.
• 05:35 The lifespan of a capacitor is limited, and higher operating temperatures can reduce its lifespan.
• 07:01 Exceeding the voltage rating of the capacitor, lightning strikes, or voltage spikes can damage the capacitor plates.
• 08:38 Corroded or loose connection points can lead to capacitor failure.
• 09:06 Capacitors do not fail due to high current; they control current going to the start winding of the compressor and the outdoor fan motor.

Soft starter saves compressor.

He has low opinion of Lennox.