Because afurnacecan fail, leading to hazardous results, they come with safety features to prevent and detect these failures. One of these built-in safety features is apressure switch. Here we answer basic questions about what, where, and how a furnace is and does. Understanding yourheating and coolingsetup is vital to getting the most out of it. Let’s start with the basics.
什么是公关essure Switch?
The pressure switch is asafety featureon a gas furnace that saves lives.
What Does a Furnace Pressure Switch Do?
It prevents your furnace from disseminating harmful exhaust fumes via backdraft and cycling if it is experiencing mechanical failure. It operates by sensing negative pressure coming from thedraft inducerand reacts by shutting down the furnace. This mechanism also safeguards against gas leaks.
Where Is the Pressure Switch On a Furnace?
It should be located near theblower motor.
What Happens When a Pressure Switch Goes Bad?
If you have a bad pressure switch, then your furnace will not startup. There are a few different sources to consider creating the problem. Check for aclogged hose portor acracked hose between the draft inducer motor and pressure switch. Another culprit to look out for is acompromised diaphragm. It simply may be jamming because of too muchdirt and dust buildup. Lastly, your pressure switch may be simplytoo old.
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Now that you know the basics be sure to browse through our selection ofpressure switches. In fact, we carry all kinds ofHVAC switches, as well as a huge inventory ofHVAC parts. Did you know that you can find member pricing here on certain items (typically name brand, MAP priced items) if you log in? For industry professionals buying in bulk, please consider contacting us directly for extra special pricing and extra savings.
Related resources:
How to Replace Pressure Switch
Furnace Pressure Switch Stuck Closed/Open
Bypassing a Pressure Switch
What Is a Limit Switch?
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