The best replacement for downdraft is hood.

The best alternatives to downdraft are rated as following:
★★★★★  hood
★★★★  updraft furnace
★★★  updraft
★★  side draft
★★  updraft gasifier
★  water table
★  range hood
★  hood vent
  vent hood
  updraft range hood
  rangehood
  razor rotors
  sidedraft
  venturi

Your alternative for downdraft is not listed? Suggest!
Speaking about downdraft, one probably shouldn't forget about slide in range.

Other search terms related to downdraft and their ratings are:
★★★★★ slide in range
★★★★ range
★★ cooktop
★ induction
★ induction cooktop
★ grill
★ stove
★ gas range
oven
glass top electric
You have in mind a companion for downdraft and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of downdraft in all years. Click on graph for more.
downdraft
hood
updraft furnace