most efficient space heater

Portable Ceramic Heater

ZAFRO Space Heater for Indoor Use, 1500W 3 Heating Modes for Office Bedroom, Portable Electric Heater with Thermostat, Child Lock

Emerald Compact & Portable, 1000W Electric Single Burner 6.1" Coil Less Plate Stovetop

Handy Heater Copper Core Tower

Shark TurboBlade Cool and Heat Ultra Customizable Bladeless Tower Fan and Heater Pivots Twists Oscillates TH202

Optimus 700-Watt Electric Portable Oil-Filled Radiator Heater

BLACK+DECKER Portable Air Conditioner, 8,000 BTU (5,000 BTU SACC) for Rooms Up To 350 Sq. Ft., Full Function Remote Control

HEATDAZ 2-Pack Air Purifier with Essential Oil Diffuser - Perfect Christmas Gift, 108 Sqft Bedroom Air Purifier & Aromatherapy, Holiday Gift Set

Dehumidifier for Home - Perfect Christmas Gift, 1800 Sqft Dehumidifier for Bedroom/Basement, 3 Modes & 24H Timer, White Holiday Gift

Karl Home 6000-Watt 240V Electric Garage Heater with WIFI Function in Black

Dan’s Originals for Lasko 2033677 Space Heater Remote Control - 2033677

VEVOR Greenhouse Heater, 1500W Electric PTC Space Heater with Fan, Low & High Heat Modes, 15° Adjustable Angle, Overheat Protection, Black & Orange

Cascade Portable Heater with Handle Slate

Levoit PlasmaPro 400S-P Smart Air Purifier

LP500APHTR LivePure 2 in 1 Clean Heat Air Purifier & Heater

EconoHome Electric Foot Warmer for Under Desk, Office or Bedroom, Energy Efficient Feet Heater with Overheat Protection, 70 Watts

12,000 BTU portable AC (8,000 SACC) with fan/dehumidifier, app/remote control, quiet 47dB, 24H timer, for bedroom & living room.

Portable Oscillating Ceramic Heater with Thermostat

White-Rodgers 70 Series, Single Stage (1H/1C), 7-Day Programmable Thermostat, 1F75C-11PR

Karl Home 1500-Watt 23 in. Portable Electric Tower Space Heater with 3 Heat Settings

Whirlpool 6000 BTU 115V Window Mounted Air Conditioner and Dehumidifier: 3 Speeds, 8-Way Air Control, 200-500 sq. ft.

Dan’s Originals for Lasko 2033624 Space Heater Remote Control - 2033624