View visual findings from this job here - https://visionshare.xoi.io/?id=XA-DE27-6BA454B4E8E8403298D9F10162B71BAC Return to replace hot surface igniters for both first and second floor carrier furnaces: Access equipment in attic through pull down stair case * shut power to equipment * removed furnace cabinet doors * disconnected electrical from both hot surface igniters and flame sensors * removed both hard surface igniters and brain sensors from gas fired furnaces * Cleaned both flame sensors with copper bristle brush, and polished clean with steel wool * Reinstalled and secured both flame sensors in place * Removed existing hot surface igniter from mounting brackets * Installed and secured brand new hot surface igniter in both mounting brackets * Installed new igniter back into furnaces and secured electrical wiring to both flame sensors and hot surface igniters * Check the air filters- replacement recommended * return power to systems * test nest thermostats and call for heating: