The best replacement for damper is dampener.

The best alternatives to damper are rated as following:
★★★★★  dampener
★★★  flue
★★  shock absorber
★★  more damp
★★  coilover
★  stabilizer
★  dashpot
★  strut
★  louver
★  fire damper
★  harmonic balancer
★  scones
★  parallel blade damper
  gpr damper
  radiation damper
  spring rate
  dampner
  absorber
  rtc
  mute
  balancer
  fire\/smoke damper
  steering stabilizer
  isolator
  scotts
  fire smoke damper
  tein super racing damper

Your alternative for damper is not listed? Suggest!
Speaking about damper, one probably shouldn't forget about exhaust fan.

Other search terms related to damper and their ratings are:
★★★★★ exhaust fan
★★★ gas logs
★ co2 sensor
You have in mind a companion for damper and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of damper in all years. Click on graph for more.
damper
dampener
flue