HVAC DIY Tips & Tricks
Don't let a faulty furnace pressure switch ruin your winter! Learn how to troubleshoot and fix the issue with our step-by-step guide. Keep your home warm and comfortable with our expert advice.
A furnace pressure switch is used in a furnace to confirm that the draft inducer motor is effectively removing all of the products of combustion from the heat exchanger.
The purpose of a furnace pressure switch is to sense a specific pressure difference when the inducer motor is running.
The pressure difference can be affected by draft inducer motor failure, venting issues, heat exchanger issues, and condensate drain issues.
You’ll need to attach the manometer to the tubing on the furnace pressure switch to get a reading when the draft inducer motor is running.
There are a few different types, from single-stage conventional to two-stage condensing furnace pressure switches. Check your furnace type.
You going to want to read and understand the sequence of operations for the furnace heating cycle before troubleshooting.