5 Misunderstood AC Run Capacitor Facts

Bryan covers 5 misunderstood AC Run Capacitor facts and how a run capacitor works.

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[Howard]

Thank you for explaining Capacitor related to AC. We had the AC tech tell us that our capacity was weakening but has not failed. We put off replacing it.

[edwinjewell]

Brian you are simply a Great A/C
Instructor an Encyclopedia of
A/C conditions.
Thank You

[a.t.]

Thank you for your ongoing dedication to educating HVAC techs helping make us better at what we do. I am grateful and hope you never stop doing it.

[paulrozinski]

Glad to see that Bryan and Craig have collaborated on some videos. One may explain a topic differently and that difference may be what gets the light bulb to light . Keep up the great work guys.

[PatriotsOfNewEnglandX]

Love this channel! Keep it coming! Thanks for your contribution to our trade! Great work!

[backhoeprojects]

AC energy flows thru a capacitor just fine, but will cause a phase shift in timing due to its requirement to be charged up and discharged, this is needed to offset the starting and running winding so the motor can be driven in a direction of choice. If there were no start capacitor both running and starting winding will be energized at the same time and the motor will not have a reason to start in either direction. Don't concern yourself that the electrons don't flow across the separated plates because the energy itself passes right thru the capacitor delivering power to the start winding offset in time from the power being delivered to the running winding. Like he said energy flows thru a transformer with no connection as well. We use capacitors all the time in high frequencies as filters and such. In this case its strictly used as a timing shift component. Simply shut it off discharge it and measure its value with a meter no fancy math needed. Fail from heat really so what that is why we need AC, its not like we can control the heat in some way, unless you want to get an extension cord and keep the capacitor in by the A coil.

[steveselgestad]

You do a great job in your explanations and level of detail

[kkrobertson]

Very informative! This guy is a GURU in this field:).

[johnschwarz]

Thank you Brian for all your dedication to continuing education. Would you consider spending more time on inverter technology and specifically proper troubleshooting of these units ? I think we all can use more information on this technology.

[saintsgun]

Channels like this and ACservicetech make you feel like a damn physicist lol... there's just so much science involved in HVAC. It's awesome

[jericosha]

Checking a cap while it's running is sometimes really clutch. I was on a roof the other day and there was no disconnect. I didn't want to climb down the ladder and search for a breaker, so I looked up your website and did it right there. SICK.

[DavidHernandez-gtbo]

Great explanation clears up a misunderstood subject 👍

[Wdbx]

Thanks for reviewing this all important topic.

[raindropsrising]

This is such a simple and clear, yet rare information. Thanks for the time to put these information together.

[jenko]

Get your guys to study “ Power factor” and this will really drive home the role of a capacitor in an inductive circuit. Great video.

[jenko]

The start winding is, after it is used to start the motor, becomes a second phase, with the help of the run cap . It is in effect a two phase motor.

[pipi]

Thanks that example really helped along with the explanation. Now add a 521 to it and lets see how all of that works together.

[munawarsoomro]

Another awesome straight to the point but detailed video, thanks Brian. Quick question, is there a brand of capacitors you recommend?

[wasimedoo]

Very good information bro keep it up God bless

[condor]

Great video!!! I looked in a condenser unit and it had a dual cap with a 60 MFD herm. Looking on repair clinic the model showed it should use a 30 MFD. The 60 MFD was out of spec but must have been in this unit for years. Should I replace with the 30 MFD? I did not look on the unit itself but need to do that too to see if the MFD is noted on the compressor. Trane model TTD760B100A2. Thanks!!