How To Bypass The Pressure Switch On My Furnace?

How To Bypass The Pressure Switch On My Furnace?

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How To Bypass The Pressure Switch On My Furnace?

The world of heating and cooling is filled with urban myths. One we hear about at Climate Control Company deals with bypassing the pressure switch on your furnace in Glenwood Springs, Aspen, or Vail, CO. It’s sometimes portrayed as some sort of a quick fix on a malfunctioning furnace, and nothing could be further from the truth. Let’s start with a short pressure switch lesson.

WHAT IT IS & WHAT IT DOES

The pressure switch is on a furnace to protect you and your home. Normally located near the furnace motor its vital safety functions include sensing negative air pressure which causes dangerous back drafting, a leading cause of carbon monoxide poisoning. This switch is also designed to detect gas leaks. In either situation the switch will proactively shut the furnace down. 

BYPASSING THE PRESSURE SWITCH IS NOT A REPAIR

Like any device a pressure switch can fail meaning the furnace won’t work. The problem is that homeowners often want to try and diagnose this on their own or bypass the switch in an attempt to restart the furnace. Climate Control cannot emphasize enough that bypassing the pressure switch is not meant as furnace maintenance or repair. It is simply an attempt to troubleshoot the furnace by isolating what might be causing the problem. Any attempt to bypass the system should only be done by an HVAC technician with the proper training and test equipment.

TESTING A PRESSURE SWITCH

Testing a pressure switch is not something most homeowners are qualified to do. It takes an electric multi-tester and the knowledge to use it correctly to measure resistance (ohms) and voltage. The good news is that replacing a this system is not a huge job for an HVAC technician. I’m not going to tell you it’s cheap, but it costs much less than many furnace repairs.

SCHEDULE FURNACE MAINTENANCE

This is another great opportunity to remind you about the importance of furnace maintenance. A Climate Control Company technician will test the pressure switch during a visit to your home. It’s just one more way to protect your Glenwood Springs, Aspen, or Vail, CO home against a furnace breakdown. Call now to make an appointment for your seasonal furnace maintenance. To learn more about the many services we offer be sure to like us on Facebook and follow us on Twitter.