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How to Test a Furnace Pressure Switch


Whether you’ve owned your home for a long time, or you’ve recently purchased one, it’s important to understand the importance of your furnace pressure switch. Do you know what your furnace pressure switch is? How can you test it? What happens if you don’t test your furnace pressure switch? Here’s what you need to know.

What is a Furnace Pressure Switch?
Simply put, a furnace pressure switch ensures that your furnace is running safely. As your furnace runs, its draft inducer motor causes negative pressure. Your furnace should not run unless a certain level of pressure is present. If your furnace runs when the wrong level of pressure is present, gases can fill the room, causing injury and/or death. Your furnace pressure switch keeps this from happening by operating correctly.

How to Test a Furnace Pressure Switch?
For some, testing a furnace pressure switch is an easy do-it-yourself job. However, many people are more comfortable calling an HVAC specialist to ensure the job is done right. There are multiple steps involved in testing a furnace pressure switch, and if any of these steps is missed or done incorrectly, it could cause a safety issue. For example, you must turn off the power before you begin the repair process. You must also remember to not blow air into the switch hose, or this will damage the pressure switch.

Why Should I Test My Furnace Pressure Switch?
There are a number of reasons why your furnace pressure switch needs to be tested. At Aire One Heating and Cooling, we’ve been offering HVAC services in Ontario since 1990, and we serve both homes and businesses. We can help diagnose problems with your furnace before they turn into major safety issues. If your furnace pressure switch isn’t turning on, that can signal other major problems with your furnace. Preventing other problems with your furnace can save money in larger repairs down the line. It can also ensure that your furnace continues to safely run, making your home more comfortable, with fewer costs for energy bills. If you need your furnace maintained, repaired, or replaced, contact us today. At Aire One Heating and Cooling, serving all over Ontario, we are here for all of your HVAC needs.

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