Charging R-410A Refrigerant into an Air Conditioner! Pressures, Temps, Tips!

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In this HVAC Training Video, I show the Step By Step Procedure for Charging R-410A Refrigerant into an Air Conditioner that is Low on Refrigerant. I show the Pressures, Temperatures, Delta T, Charging Methods, and What to Watch Out For when Adding Refrigerant into an Air Conditioner equipped with a Piston Metering Device. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.

Quick Reference Cards are available:

Paperback- Refrigerant Charging and Service Procedures Book:

E-Book- Refrigerant Charging and Service Procedures search “ac service tech” or “refrigerant charging book”

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Checking the Charge Tools:
Yellow Jacket Refrigerant Gauge Set
Refrigerant hoses with valves
Yellow Jacket Gauge set & hoses
Yellow Jacket 4 Port Manifold w Hoses
Digital Refrigerant Scale
Ratcheting Service Wrench
Compact Ball Valve for Refrigerant Hose
QuickDisconnect 90 for refrigerant hose
RectorSeal Bubble Gas Leak Detector
Fieldpiece ST4 Dual Temp Meter
Fieldpiece Bead K Type Temp Sensor
Fieldpiece Wet Bulb Temp Sensor
Fieldpiece TC24 Temp Clamp

Electrical Diagnosis Tools:
UEI DL389 Multimeter
UEI DL479 Multimeter with temp sensor
Magnet Jumpers-
Alligator Jumpers-
Irwin Wire Stripper/Cutter/Crimper

Vacuum Tools:
JB 6 CFM Vacuum Pump –
CPS 4 CFM Vacuum Pump –
Appion Valve Core Removal Tool –
Appion Blue 3/8″ to 1/4″ Vacuum Hose –
Appion Red 3/8″ to 1/4″ Vacuum Hose –
Yellow Jacket 1/4″ by 1/4″ 3’ hose –
Appion 1/4″ by 1/4″ and 3/8” hose –
Uniweld 1/4″ by 1/4″ 2’ hose –
CPS Vacuum Micron Gauge –
JB Vacuum Pump Oil –

Flaring Tools:
Yellow Jacket Flaring Tool –
Spin Flaring Bits 1/4″, 3/8″, 1/2″, 5/8″, 3/4″-
Yellow Jacket Flaring Tool with Set Depth –
Yellow Jacket Torque Wrench –
Uniweld Swage and Flare Kit-
Nylog –
Ridgid Tubing Cutter –
Wolverine Tube Reamer –

Swaging Tools:
Manual Copper Tube Swage/Expander-
Spin Swaging Bits 1/4″ to 7/8″ for the Drill-
Uniweld Hydraulic Swaging Tool-
Uniweld Swage and Flare Kit-
Uniweld Hammer Swage kit-
Uniweld 3/4″ Hammer Swage-
Uniweld 7/8″ Hammer Swage-
Uniweld Multi-Size Hammer Swage-

Refrigerant Leak Detection Tool:
Accutrak VPE Ultrasonic Leak Detector

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R A says:

Why in Britain we don't have it as floor. we have at wall hanger.

daqing qi says:


Dustin Montgomery says:

Definetly need to be wearing saftey glasses when checking the Delta T. Wouldnt want to get oxygen into your eyes.

Kevin Jones says:

great info!

Darth Vaider says:

do you have a video where we can apply same pressure/temperature method but for a refrigerator? I mean there's no air duct, so where do we put our probes? I'm using wireless Testo probes btw.

Bob D says:

Tampa Florida check in thanks for the content

elmer ramirez says:

Imagine being on 140 degree roof waiting for that right superheat lol I know a lot of techs use psi for reference also

Darrell Lucero says:

Hello thanks for sharing this very informative video sir. By the way is there a PDF file for the AC Service tech manual which we can download for our reference?

TheTommyboy63 says:

Why utilize a Manifold at all? The temperatures of the Suction/Liquid lines, ambient air, indoor air temps, against a manufacturers Charging Chart will give you an accurate charge indication of charge without losing any refrigerant.

Manuel Ramirez says:


Thanks for the video,

What would happen if you add refrigerant as vapor? and what is the proper repair for such if needed it?

Roy Ogden says:

If a unit says 17.6 lbs refrigerant and you put 17.6 lbs in it, isn't that it?

Randy Cates says:

This video make me very stupid!

J Daniels says:

Sir where is your course for universal certification? Thank you

Dave Gordon says:

Awesome video!! Very detailed. Thanks!

Jim Bonito says:

You are a great A/C tech . If there was young apprentice wanting to learn the A/C biz you would be the guy I would want as an instructor … Kudos to you and your expertise

Jose Morales says:

Thank you so much for your help.. I hope you do that in Spanish also….

Gary Torres says:

How can I get your book

Jesus Prado says:

Excellent information. Again, what is your wife's name? Thanks. 🙏

Andrew Thacker says:

Agree with Joe Flores, this is not real world service.

clementino francisco says:

Way too fast you talk like if you are taking a test and no teaching

Brian L says:

For sure one of the best videos I have watched pertaining to filling with the why's and how's. This video has certainly left enough of an impression on me in regards to filling systems. I will admit that I have filled a little too fast in the past based on how low and slow you let the gas in.
Thank you for your professionalism and explanation. I look forward to viewing more of your videos in the future.

Willie Lee says:

That whip and lineset is tight

Fast Eddy 270 says:

Awesome video !!! Thanks

william server says:

Great video

Stan Cousins says:

why do some refrigerant tanks have a blue and red valve

Khoa Le says:

I have the blue gauge and the quick coupler already but need the t-connector. On your video at minutes 7:54, what is the part# for the t-connector and where to buy it? Thanks

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