Prior to programmable thermostats and smart HVAC systems, you had to know your old
furnace to keep the house warm in winter. Sometimes that meant adjusting a little funky piece of metal, such as the Sears baffle adjuster.
If you were raised in a house with coal or wood heat, there’s a good chance you’ve seen one of these on a basement wall or beside the furnace vent. It was simple, robust, and surprisingly effective. And it is likely for many a lost memory of the home-heating business. This device signaled a substantial part of life once controlled by Sears baffle adjusters.
The Sears baffle adjuster is a mechanical device, designed to manually change the airflow in a furnace or