How to Jump Pressure Switch on Furnace

How to jump or bypass pressure switch on a furnace. If a pressure switch is not jumpered correctly, the furnace will not turn on at all. This would ONLY be done for testing purposes. Do not leave safety switches bypassed. In this video I explain the wrong and right way of bypassing a pressure switch on a furnace.
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➡️ Video References:
10 Pressure Switch Problems:
3 Ways To Test a Pressure Switch:
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⚠️ Disclaimer:
This video is for educational purposes. All appliance and HVAC repair work should be done by a trained professional. Word of Advice TV is not responsible for any possible damages or injuries caused by the use or misuse of the provided information.
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⭐ Other videos you may find helpful:

Top 5 Furnace Problems:
How to Test Pressure Switch:
10 Pressure Switch Problems & Fixes:

[joelmorgan]

I've been in hvac for almost 22 years but the last 19yrs have done industrial refrigeration installs and repairs only. The company I worked for specialized in industrial chillers, ice rinks, cooling towers, large refrigerated air dryers and large commercial applications. Recently I started working for myself and the bulk of my work is residential furnace and central air. I was pretty rusty with the furnaces, forgot quite a few things, and learned how much the building codes changed in my area since I last did residential hvac work. Your videos helped me refresh and brush up, and even learned a few tricks I've never seen or encountered before. Keep up the great work.

[PartyKing]

This video has saved me! Just did this to my furnace as a temporary fix until stores are open again and it works amazingly!!! 10/10 would recommend this video to anyone!

[ZoneDoctor]

Thanks Jay, I used your technique to make sure the pressure switch was actually the problem last winter (2021). To be technically correct, however, the little micro- or limit-switch is actually normally closed but is held open by the diaphragm until suction is applied by the inducer motor. At least for the Trane furnaces in my home. Most of my furnace issues have been due to a pressure switch problem - the switch actually failing due to the tiny amount of current causing the contacts within the switch to become dirty over time. I love the metal pressure switch housing because the pressure switch can be fixed by replacing the micro- or limit-switch instead of by replacing the whole unit. This happened this year (2022) with the other furnace in our house. Each pressure switch is over $60, replaced the switch for less than $3 - and the house is nice and warm now.

[jimkeefover]

All of these videos are very informative, very easy to understand, plain and simple. When ever I have a problem such as this I always go here. Most other videos they talk about everything except what the video is about, I am trying to fix my problem I am not interested in what kind of life they have and you really don't learn anything. Keep up what you are doing. You are great

[GenkiBlast]

This may be an old video however I wish to thank you for making these for all to watch. I was having trouble figuring out why my furnace albeit old was having so much trouble kicking over. I followed several videos and did everything with intent with the tools I have. I managed to find I needed to replace my old pressure sensor of 16+ years. I have heat once again because of you.

[classic]

Your furnace is really cool 😎
Gas is better than oil. I had an oil
burner in my house in Massachusetts. It made a loud bang
when it started. It was a steam boiler, so it took a while to get heat
out of the radiators. In the winter it
cost me at least a $100 per week to
heat the house to 66 degrees...
And of course there was a 275 gallon take in the cellar as well.
In fact I had 2 tanks, because I had
a rental apartment with it’s own furnace. Before I sold the house,
to move to Florida, I had to have it
inspected, and low and behold they
found both tanks were wet on the
bottoms, meaning they had slow leaks. To sell the house I had to get new tanks installed. It cost me don’t miss

[matthewpham]

I thought I knew how the sequence of operations for furnace works, but I learned something new today. I learned a lot from all your videos, much better than in class instructions I took before.

[DmitarVuckovic]

Thank you! Exactly what I needed to get the heat back on while I wait for the replacement switch to arrive.

[zachbaxter]

Thank You, Thank You, Thank My furnace went out on thanksgiving and I had Airbnb guest. To add to it, we where going to get down to 25 deg F tonight! I use this trick to get it working. Then I cleared out the line and cleaned the fan. Works great now! You are the best! keep making amazing videos like this!

[tarbashtheegyptianmagician]

Just wanted to say Thank You. At -27 C with -37 C with windchill and furnace giving out, waking up with 16 C in the house in the morning is not fun. Of course this happens on Saturday morning, when most shops are closed. With your help I was able to determine that pressure switch was the culprit and was able to restore heating to the house throughout the weekend while the switch was ordered. Thank You Sir.

[ricmartinez]

Excellent! My blinking LED is indicating the pressure switch. But I wanted to test it to make sure it was bad before ordering a new one. I saw your other video "3 Ways to Check a Pressure Switch" and I have a multimeter. I was going to do that today until I saw this video. This diagnostic it much simpler! Thank you! Thank you! Thank you!

[MarkAlbert]

I have been recently asked to investigate why a furnace is not turning on. After doing some research, I thought the cause might be a defective or stuck pressure switch. You explained everything so well and clearly that I can now go back and easily determine whether the pressure switch is the issue or not.

[jonathansnyder]

This. This is the one. Trying to get some heat into the house while a part comes. Couldn’t jump until I did it the right way. Thank you!

[sparkeylad]

this guy is a very very good teacher. i know most boiler engineer wont like this guy, but i do,

[pkiser]

We've had a problem with our furnance for a couple of years. It intermittently will short cycle and I've cleaned the flame sensor and replaced it, and futzed with it until it eventually starts working ...without really solving the problem. I've had two different technicians from different heating companies come out and look at it with no resolution. I think they were looking for the BIG sale, not a repair. It has been extremely frustrating. Your videos have allowed me to check those things that the technicians should have checked in an effort to dianose the problems. It appears that the issue is down to the pressure switch (thanks to my 17 y.o. son checking the voltage across the two leads of the switch.) and now I can focus on that. I will be replacing the flame sensor (again) and the igniter as an update to the 25 year old furnance, and checking to make sure the flue is not obstructed. THANK YOU for explaining the basics so that I can finally solve my furnace problem.

[juans]

EXCELLENT, EXCELLENT LANDSCAPE VIDEO professionally explained with no distracting HORRIBLE LOUD BACKGROUND MUSIC!

[dominicm]

Been going through your videos and noticed this one has quite a few views.... as a handyman who is always working on heating systems, any type of video showing a “ bypass” solution, I think will always do well as they are incredibly helpful to isolate and rule out things as well as get you up and running in a pinch 👍

[jeffharrison]

You're good, man! You're explanation are structured, clear and concise. You would be a GOOD teacher! You
don't drift to the left or right but stay right on target!

[clee]

Thanks you! Just diagnosed the problem and I'm on my way to order a new pressure switch! Save money on those repair bills