(By:-EmpireComfort Systems) The Perfect Heaters for Any Environment No matter what type of space you need to heat Empire s American made zone heaters will suit your needs perfectly Empire Vent-Free Heaters are virtually 100% fuel efficient Because they don t require outside venting no heat is lost And best of all Empire Vent-Free units do not require electricity to operate Our Empire Vent-Free Heaters offer convenient easy to operate controls on the top of the unit The push button igniter lights