How To Use AC Gauges

Done refrigeration of 47 years. Excellent presentation. Suggestion if you find yourself in this situation. Hold the hose firmly against the valve and totally loosen the hose fitting. Then quickly pull the hose off the fitting. You will still get the blow off but you will have better control of where it sprays. If you have low loss fittings, I like to remove the high side first, then open both valves and return the refrigerant that is held in your gauge manifold back into the a/c system, then remove the low side hose.

Great video Ben, Being 78 YO I probably will not be going out and buying a set of gauges. I will be selling my home and moving in about a year so now I am in the process of giving most of my larger tools away to family. I have decided to rent and let someone else do all the work and enjoy my final few years without having to fix everything around the house. All the same, I really enjoy your videos. One is never to old to stop learning new things.

I just found your channel through your recent collaboration with Jay on the types of compressors. Glad I found your channel, I am halfway through an HVAC program and I love the in-depth and informative video's you guys do. Keep up the great work!

I'm honestly not sure why I watched this, I'll never do this, but you just have a way of making things like this really interesting. Thanks for taking the time to make these videos.

Thanks for explaining the relationship between the pressure and temperature on the gauges and the temp. reading relating to low side and high side! Now I understand what causes “Freezing Up”. Wow the light bulb turned on for me! Thanks again.

Thanks Ben....easy to follow and understand. You’re a good teacher. I’m just trying to be more knowledgeable about Refridgerant’s and AC dynamics. I hope to install my own mini split soon.

Excellent detailed video.You make it easy to comprehend the pressure readings on the manifold gauges and how they relate to temperature readings.

Excellent communication skills on this subject, not too many people have both HVAC skills and teaching skills. Keep the video's coming.

You have a gift for explaining such a complex subject in a manner so easy to understand. Your talent belongs in a educational Institution to teach our younger aspiring technicians all there is to know about what you know! I watched the full video and got educated on HVACs, thank you for sharing! I subscribed and rang the bell for more content, great work!

About time I find someone who can explain how to use gauges so understand what they are talking about. Thanks!!!

I do understand that there is a lot more to come, but this is the first "educational" video that I have watched that covered the basic basics in a straightforward easy to understand video.

I watched this video again for a tuneup on my AC gauge knowledge. Still THE best video on AC gauges I have ever seen. Just an update on the mini split 36k in my 30x40 R-4 insulated metal building. I did add rubber seals and brush seals to my roll up doors to help reduce conditioned air from escaping. The mini split has exceeded my expectations on controlling the temperature in my shop. It cools and heats where I am comfortable in all weather temperatures here in Texas. There is maintenance of cleaning the inside filter especially when wood working and I do clean the dust from the fins one the outside. I turn off the unit when mowing. When not heating or cooling I keep it on dry setting. My table saw jointer and planner do not rust because the system pulls the moisture out of the shop. Lots of humidity in Texas. Be blessed!!!

man this video was GREAT!! I needed this. this will be my first summer doing a/c tune ups. I can say I feel a lot more comfortable with gauges now! thanks man!!

Probably the best video out there I’ve found on using gauges. Great job Ben

Thank you for explaining the bleeding/flushing of the lines for charging refrigerant! Some other videos explain how to flush the yellow line, but it never made sense to me that they ignored the air inside the low/blue and high/red lines. The fact that the refrigerant pressure is above ambient and thus the air won't enter the refrigerant loop makes sense, but I come from a cryogenics background where air and helium (refrigerant) mix quickly and readily and such a practice will likely kill the system in short order.

your ability to present clearly , concisely and accurately, is truly amazing. I am just starting AC service (I am retired 50 years this year from the general construction business, an old timer ) and have an interest in this side of the business. Thank you for making me know I can do this ... I'm starting with checking my own system today to practice.

Previous to this video I watched another one on how to read A/C gauges. It was a good video it had a lot of information but it never really went into detail about the inside readings. Your video helped me a lot to understand what all the numbers inside the gauge mean, I had no idea it was that easy to read. Thank you

I watched your video again and it is still the best YouTube I’ve ever seen! I just installed a 36k mini split DIY, in my 20’x30’ metal building. It is working fantastically, but living In Texas, THE TRUE TEST will be Summer months with high temps and high humidity.

As a person with learning disability the way you explain stuff is very clear and understandable. Your awesome Ben!

I know your video is three years old but out of all the videos I watched yours was the best and more helpful than any video here on YouTube. Thank you so much you have a new subscriber you rock.👍