Best Heater Size For Garage

CUQOO Portable Calor Gas Heater - 4.2KW Indoor Room Heater 3 Heating Settings | Heating Butane Foldable Heater with Hose, Clips & Regulator | Perfect Space Warmer for Home Office Garage Workshop

Dreo 16 Inch Space Heater, 1800W Silent Ceramic Electric Heater Low Energy, 3-Mode 3-Speed, Overheating & Tip-Over Protection, 12H Timer, 70° Oscillation, for Home, Solaris Slim H3

LightHouse ECOH-080 ECOHEAT 80W Greenhouse Heater | Temperature Control | Eco-Friendly | Quiet Heater for Garden Workshop, Garage, Warehouse. 608mm, Green

LightHouse 2kW Greenhouse Space Heater with Temperature Control Quiet Fan and Heater for Garden Workshop, Garage, Warehouse, Green

Russell Hobbs 700W Compact Portable White Ceramic Plug in Fan Heater in White with 2 Heat Settings & Overheat Protection, 10m2 Room Size, RHPH7001W 2 Year Guarantee

Russell Hobbs 1800W/1.8KW Electric Heater, Retro Horizontal/Vertical Fan Heater in Grey with Adjustable Thermostat, 2 Heat Settings, 20m² Room Size, Dial Control, RHRETHFH1001G with 2 Year Guarantee

Mylek Tubular Heater 135W - 1050mm - Low Energy Tube - Built in Thermostat And Mounting Brackets Greenhouse, Garage, Caravan (105cm, 135W)

SIAL Portable Electric Heater 2000W Ceramic Fan Space Heaters 3 Settings & Adjustable Thermostat（Yellow）

Pro Breeze® 2000W Ceramic Fan Heater - Electric Heater with Automatic Oscillation, Thermostat, 2 Heat Settings & Tip-Over Protection - Portable Heater for Home, Office, Study, Garage, Bathroom

Russell Hobbs 2000W/2KW Electric Heater in Black PTC Ceramic Space Heater, Portable Oscillating 2 Heat Settings Overheat Protection, Adjustable Thermostat 20m2 Room Size RHFH1008B, 2 Year Guarantee