Is it okay to sleep with a portable gas heater on in my bedroom overnight if I leave my windows open? - Quora
BTGGG Portable Gas Heater 73cm Free Standing Gas Heater Indoor 4.2kw Warm Infrared Heating Heater with 2 Heating Ports,Electric Ignition Mode with wheels comes with Free Hose and Regulator, White : Amazon.co.uk:
Greengear Black 4.2kW Mobile gas heater | DIY at B&Q
AXOIN Propane Heater, Ultra Quiet Propane Heater, Propane Radiant Heater, Indoor-Safe Portable Propane Radiant Heater for Garages, Workshops and Construction Sites : Amazon.co.uk: Garden