: Retailers like Dey Appliance Parts specialize in replacement components for home systems and are generally open to the public.
Most standard hardware stores (like Home Depot or Lowe's) do not stock internal furnace components. Instead, look for: where to buy a furnace pressure switch
: Stores like Ferguson often sell parts to the public, though some national chains like Johnstone Supply may require a contractor's license depending on the location. : Retailers like Dey Appliance Parts specialize in