This guy is a great example of what a teacher truly is! Amazing technician as well! Such an inspiration to all connected to this trade! God Bless!

I freaking love your channel, bro. If it wasn’t for you, I would’ve been fired already

Thank you for all you do for the HVAC industry!

What a great video...I'm experienced, have instructed before and this is a great teaching video...A darn good refresher too, for guys that don't get the hands on as much as they once did...Thanks for doing this.

Another great video! The way I explain O.L to other people is, if a Ohmmeter is connected across a closed switch, we have a complete circuit; the Ohmmeter displays the amount of resistance in Ohms. If the Ohmmeter is connected across an open switch we have an open circuit, or an Open Loop; the Ohmmeter displays O.L.

I love heating season. Great video

By far the best informational video on pressure switches. Thank you for speaking in Layman’s terms.

I wish this video would have been here 3 years ago. I had a pressure switch go out on my furnace and after not finding any useful videos on how to diagnose or even explaining how it works I just kinda winged it. After about 3 days of calling around I finally found a place willing to sell me a PS without a service call. I changed it an furnace worked fine. Then the blower motor went out. I had done so much research on the furnace I decided to go to school and be a tech. I still like it not exactly what I expected but it's still interesting to me so im happy

thank you. still the best hvac channel on you tube.

I really appreciate your videos. Thank you

You Tha man Craig! Good refresher for the upcoming heating season.

one of the best videos explaining about pressure switch!

Ooooh Craig has one of those fancy chrome tees for his manometer. : P What a pimp.

That FP Mano/PSwitch tester is a must have. We are only going to see more, and more condensing furnaces with multiple p swtches. It will help make the right call when your unsure.

Best pressure switch tutorial out there! Great job!

Very good video, excellent. Teaching.thanks, for your spent time on making these videos.

Thanks👏 Craig for another great video I can't thank you enough keeping my mind Sharp for this cold season 🙏

Really excellent teaching and explanation.

Very good video, you make learning this stuff fun.

AWESOME Thanks for making this So very helpful

Always amazing

Great video. Clear and concise.

Would be great to understand pressure reduction effect in each area and why occurs? Awesome video

so much knowledge in this video, thank you

Wonderful information. They do not appear to be built to last a long time?

Thanks

Great tech knowledge

Probably the easiest and most complicated diagnoses in HVAC.....Cause once you figure out HOW the PS works now you have to figure out WHY its not working properly. And that can be a very deep rabbit hole!....Especially as the industry moves towards tighter tolerances of safeties

I was troubleshooting a furnace . The flame would die out when all the doors were closed to the closet. With the doors open and the panel front cover panel off the flame would still have trouble staying on. The gas pressure look normal. 3.5 WC . The flame would cut in and out rapidly.

I real like your videos

Thanks for the video. 🥃🥃🍺🍺🍺🍿🎯 Stay safe. Retired (werk'n)keyboard super tech. Wear your safety glasses!

Has anyone ever wondered WHY most HVACR components are cheaply manufactured even though the costs are quite high? Please don’t comment that it’s the case with everything in recent history. Just imagine if Honda or Toyota manufactured furnaces and A/C units/components - would certainly be a dark day for HVACR contractors - virtually NO service calls!

Great videos bossman keep them coming 👍🤙

I had a nightmare call last week, we'd been out there 5 times trying to figure this out. 90% American Standard furnace with a dual port pressure switch. Basically what would happen is the pressure switch would never close, but if you unplugged the + pipe it would close. Thing is once the flames lit and got going if you plugged the + pipe in the switch would stay closed where as before it'd open again. The flame would pop and sputter at light but then run fine. Turns out the exhaust was full of sticks and twigs but I still don't understand how it only stopped the pressure switch from closing during per-ignition but not AFTER ignition. Any thoughts Craig? I'd like to learn from this experience if I can.

can you do a video on the new "pressure transducers" that are being used on the new ultra low nox goodmans?

A bro tanks great explanation 👍

About that single-port switch at 10:00 that monitors condensate overflow -- is the hose connected to the output/exhaust part of the inducer housing where pressure is HIGHER than the cabinet? Does that mean water rising from blocked trap will cover the hose and prevent that normally higher pressure from getting to the switch? About the other dual-port switch, if the positive side going to the burn chamber is blocked or completely disconnected, the furnace won't detect that and will still happily run because the difference is even greater, correct? Thanks for the great video -- it's the best I've seen on this topic...

excellent

I had to listen to the difference between pressure switch designs a few times to know what they have to do without referring to the control board errors.

Great video! Question: What happens if I connect the 2 pressure switch hoses backwards? Thanks. (pressure switch looks like 2 of those you first show joined together)

why is it that sometimes there is a hose connected to condensor box and one connected to inducer

Instead of measuring resistance across the sensor would it not be better to do a loaded circuit voltage drop every time

my powervent water heater would often go into error mode because not enough vacuum could be delivered to the pressure switch, so had to recalibrate the set screw biasing the diaphragm/spring. also make sure the vacuum hose does not have a leak and the end connects are firmly sealed. fyi, a powervent water heater uses an exhaust blower to suck combustion products out of the water heater. i would have liked a naturally vented water heater to avoid the 50 watt usage of the blower and the extra complexity and cost. however the exhaust duct in my house is too long.

So being non American. Why use Gas burner with AC technology, when we have reverse cycle? Or are you Canadian, thus lower ambients?

Does the positive hose that's connected to the seal chamber monitor if theres a clog or crack in the heat exchanger?

👍

Inducer motor pulls combustion air in? Going on 5 years of this and I did not know that.

You need to make it clear where we have negative, positive and differential pressure. Need to show exactly where that reference point, negative compare to what? positive compare to what? difference between what? why we have negative pressure there, why we have positive pressure there. redo the video

If you like the information that you got from this, let the ads play. Get this guy paid for all the money he’s saving you. The ad is playing right now as I’m typing this.

I found that very confusing

The 24/7 hand movements urgh