The best replacement for gas fire is electric fire.

The best alternatives to gas fire are rated as following:
★★★★★  electric fire
★★★★★  central heating
★★★  wood burner
★★★  electric heater
★★★  log burner
★  radiator
★  wood fire
★  wood burning stove
★  halogen heater
  open fire
  coal fire
  real fire
  stove

Your alternative for gas fire is not listed? Suggest!
Speaking about gas fire, one probably shouldn't forget about back boiler.

Other search terms related to gas fire and their ratings are:
★★★★★ back boiler
back boilers
You have in mind a companion for gas fire and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of gas fire in all years. Click on graph for more.
gas fire
electric fire
central heating